CMakeLists.txt

@@ -72,6 +72,7 @@ else ()
     # Devices/simulator/Source/Simulator.cpp always defines its own hardwareConfiguration; without
     # this, Firmware/Source/Main.cpp's #else branch also defines an empty one (its ESP32-only
     # fallback for devices migrated off the deprecated HAL), causing a duplicate-definition link error.
+    add_compile_definitions(CONFIG_TT_USE_DEPRECATED_HAL)
     add_compile_definitions(CONFIG_TT_DEVICE_ID="simulator")
     add_compile_definitions(CONFIG_TT_DEVICE_NAME="Simulator")
     add_compile_definitions(CONFIG_TT_DEVICE_VENDOR="")

Devices/btt-panda-touch/CMakeLists.txt

@@ -3,5 +3,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 idf_component_register(
     SRCS ${SOURCE_FILES}
     INCLUDE_DIRS "source"
-    REQUIRES TactilityKernel
+    REQUIRES Tactility
 )

Devices/btt-panda-touch/device.properties

@@ -12,6 +12,8 @@ hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 hardware.usbHostEnabled=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=Internal
 
 display.size=5"

Devices/cyd-2432s024c/device.properties

@@ -7,6 +7,8 @@ hardware.target=ESP32
 hardware.flashSize=4MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.4"

Devices/cyd-2432s024r/device.properties

@@ -7,6 +7,8 @@ hardware.target=ESP32
 hardware.flashSize=4MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.4"

Devices/cyd-2432s028r/device.properties

@@ -7,6 +7,8 @@ hardware.target=ESP32
 hardware.flashSize=4MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.8"

Devices/cyd-2432s028rv3/device.properties

@@ -7,6 +7,8 @@ hardware.target=ESP32
 hardware.flashSize=4MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.8"

Devices/cyd-2432s032c/device.properties

@@ -7,6 +7,8 @@ hardware.target=ESP32
 hardware.flashSize=4MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=3.2"

Devices/cyd-3248s035c/device.properties

@@ -7,6 +7,8 @@ hardware.target=ESP32
 hardware.flashSize=4MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=3.5"

Devices/cyd-4848s040c/CMakeLists.txt

@@ -2,5 +2,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 
 idf_component_register(
     SRCS ${SOURCE_FILES}
-    REQUIRES TactilityKernel
+    REQUIRES TactilityKernel driver
 )

Devices/cyd-4848s040c/device.properties

@@ -10,6 +10,8 @@ hardware.spiRamMode=OCT
 hardware.spiRamSpeed=80M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=4"

Devices/cyd-8048s043c/CMakeLists.txt

@@ -2,5 +2,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 
 idf_component_register(
     SRCS ${SOURCE_FILES}
-    REQUIRES TactilityKernel
+    REQUIRES TactilityKernel driver
 )

Devices/cyd-8048s043c/device.properties

@@ -12,6 +12,8 @@ hardware.spiRamSpeed=80M
 hardware.esptoolFlashFreq=80M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=4.3"

Devices/cyd-e32r28t/device.properties

@@ -7,6 +7,8 @@ hardware.target=ESP32
 hardware.flashSize=4MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.8"

Devices/cyd-e32r32p/device.properties

@@ -7,6 +7,8 @@ hardware.target=ESP32
 hardware.flashSize=4MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.8"

Devices/elecrow-crowpanel-advance-28/device.properties

@@ -12,6 +12,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.8"

Devices/elecrow-crowpanel-advance-35/device.properties

@@ -12,6 +12,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=3.5"

Devices/elecrow-crowpanel-advance-50/CMakeLists.txt

@@ -3,5 +3,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 idf_component_register(
     SRCS ${SOURCE_FILES}
     INCLUDE_DIRS "source"
-    REQUIRES TactilityKernel
+    REQUIRES Tactility
 )

Devices/elecrow-crowpanel-advance-50/device.properties

@@ -12,6 +12,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=5"

Devices/elecrow-crowpanel-basic-28/device.properties

@@ -7,6 +7,8 @@ hardware.target=ESP32
 hardware.flashSize=4MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.8"

Devices/elecrow-crowpanel-basic-35/device.properties

@@ -7,6 +7,8 @@ hardware.target=ESP32
 hardware.flashSize=4MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=3.5"

Devices/elecrow-crowpanel-basic-50/CMakeLists.txt

@@ -3,5 +3,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 idf_component_register(
     SRCS ${SOURCE_FILES}
     INCLUDE_DIRS "source"
-    REQUIRES TactilityKernel
+    REQUIRES Tactility
 )

Devices/elecrow-crowpanel-basic-50/device.properties

@@ -12,6 +12,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=5.0"

Devices/es3c28p/device.properties

@@ -19,3 +19,5 @@ display.dpi=143
 lvgl.colorDepth=16
 
 storage.userDataLocation=SD
+
+dependencies.useDeprecatedHal=false

Devices/generic-esp32/device.properties

@@ -7,4 +7,6 @@ hardware.target=ESP32
 hardware.flashSize=8MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=Internal

Devices/generic-esp32c6/device.properties

@@ -7,4 +7,6 @@ hardware.target=ESP32C6
 hardware.flashSize=8MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=Internal

Devices/generic-esp32p4/device.properties

@@ -7,4 +7,6 @@ hardware.target=ESP32P4
 hardware.flashSize=8MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=Internal

Devices/generic-esp32s3/device.properties

@@ -7,4 +7,6 @@ hardware.target=ESP32S3
 hardware.flashSize=8MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=Internal

Devices/guition-jc1060p470ciwy/device.properties

@@ -11,6 +11,8 @@ hardware.spiRamSpeed=200M
 hardware.esptoolFlashFreq=80M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=7"

Devices/guition-jc2432w328c/CMakeLists.txt

@@ -2,5 +2,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 
 idf_component_register(
     SRCS ${SOURCE_FILES}
-    REQUIRES TactilityKernel
+    REQUIRES TactilityKernel driver
 )

Devices/guition-jc2432w328c/device.properties

@@ -7,6 +7,8 @@ hardware.target=ESP32
 hardware.flashSize=4MB
 hardware.spiRam=false
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.8"

Devices/guition-jc8048w550c/CMakeLists.txt

@@ -2,5 +2,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 
 idf_component_register(
     SRCS ${SOURCE_FILES}
-    REQUIRES TactilityKernel
+    REQUIRES TactilityKernel driver
 )

Devices/guition-jc8048w550c/device.properties

@@ -11,6 +11,8 @@ hardware.spiRamSpeed=80M
 hardware.esptoolFlashFreq=80M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=5"

Devices/heltec-wifi-lora-32-v3/device.properties

@@ -12,6 +12,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=Internal
 
 display.size=0.96"

Devices/lilygo-tdeck-max/LICENSE-Apache-2.0.md

@@ -1,195 +0,0 @@
-Apache License
-==============
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Devices/lilygo-tdeck-max/LICENSE-GPL-3.0.md

@@ -0,0 +1,675 @@
+# GNU GENERAL PUBLIC LICENSE
+
+Version 3, 29 June 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc.
+<https://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
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+
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+similar laws prohibiting or restricting circumvention of such
+measures.
+
+When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such
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+respect to the covered work, and you disclaim any intention to limit
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+the work's users, your or third parties' legal rights to forbid
+circumvention of technological measures.
+
+### 4. Conveying Verbatim Copies.
+
+You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+### 5. Conveying Modified Source Versions.
+
+You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these
+conditions:
+
+-   a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+-   b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under
+    section 7. This requirement modifies the requirement in section 4
+    to "keep intact all notices".
+-   c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy. This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged. This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+-   d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
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+    work need not make them do so.
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+A compilation of a covered work with other separate and independent
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+in or on a volume of a storage or distribution medium, is called an
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+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit. Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+### 6. Conveying Non-Source Forms.
+
+You may convey a covered work in object code form under the terms of
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+-   a) Convey the object code in, or embodied in, a physical product
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+    long as you offer spare parts or customer support for that product
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+    copy of the Corresponding Source for all the software in the
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+-   c) Convey individual copies of the object code with a copy of the
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+-   d) Convey the object code by offering access from a designated
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+-   e) Convey the object code using peer-to-peer transmission,
+    provided you inform other peers where the object code and
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+
+A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal,
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+"Installation Information" for a User Product means any methods,
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+
+If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
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+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
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+The requirement to provide Installation Information does not include a
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+updates for a work that has been modified or installed by the
+recipient, or for the User Product in which it has been modified or
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+or violates the rules and protocols for communication across the
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+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+### 7. Additional Terms.
+
+"Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law. If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it. (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.) You may place
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+for which you have or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders
+of that material) supplement the terms of this License with terms:
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+-   a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
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+    author attributions in that material or in the Appropriate Legal
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+    trade names, trademarks, or service marks; or
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+    material by anyone who conveys the material (or modified versions
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+    for any liability that these contractual assumptions directly
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+
+All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10. If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term. If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions; the
+above requirements apply either way.
+
+### 8. Termination.
+
+You may not propagate or modify a covered work except as expressly
+provided under this License. Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+However, if you cease all violation of this License, then your license
+from a particular copyright holder is reinstated (a) provisionally,
+unless and until the copyright holder explicitly and finally
+terminates your license, and (b) permanently, if the copyright holder
+fails to notify you of the violation by some reasonable means prior to
+60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License. If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+### 9. Acceptance Not Required for Having Copies.
+
+You are not required to accept this License in order to receive or run
+a copy of the Program. Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance. However,
+nothing other than this License grants you permission to propagate or
+modify any covered work. These actions infringe copyright if you do
+not accept this License. Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+### 10. Automatic Licensing of Downstream Recipients.
+
+Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License. You are not responsible
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+
+An "entity transaction" is a transaction transferring control of an
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+You may not impose any further restrictions on the exercise of the
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+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+### 11. Patents.
+
+A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based. The
+work thus licensed is called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims owned
+or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
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+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version. For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
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+
+Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement). To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
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+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients. "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+A patent license is "discriminatory" if it does not include within the
+scope of its coverage, prohibits the exercise of, or is conditioned on
+the non-exercise of one or more of the rights that are specifically
+granted under this License. You may not convey a covered work if you
+are a party to an arrangement with a third party that is in the
+business of distributing software, under which you make payment to the
+third party based on the extent of your activity of conveying the
+work, and under which the third party grants, to any of the parties
+who would receive the covered work from you, a discriminatory patent
+license (a) in connection with copies of the covered work conveyed by
+you (or copies made from those copies), or (b) primarily for and in
+connection with specific products or compilations that contain the
+covered work, unless you entered into that arrangement, or that patent
+license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+### 12. No Surrender of Others' Freedom.
+
+If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under
+this License and any other pertinent obligations, then as a
+consequence you may not convey it at all. For example, if you agree to
+terms that obligate you to collect a royalty for further conveying
+from those to whom you convey the Program, the only way you could
+satisfy both those terms and this License would be to refrain entirely
+from conveying the Program.
+
+### 13. Use with the GNU Affero General Public License.
+
+Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work. The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+### 14. Revised Versions of this License.
+
+The Free Software Foundation may publish revised and/or new versions
+of the GNU General Public License from time to time. Such new versions
+will be similar in spirit to the present version, but may differ in
+detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies that a certain numbered version of the GNU General Public
+License "or any later version" applies to it, you have the option of
+following the terms and conditions either of that numbered version or
+of any later version published by the Free Software Foundation. If the
+Program does not specify a version number of the GNU General Public
+License, you may choose any version ever published by the Free
+Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions
+of the GNU General Public License can be used, that proxy's public
+statement of acceptance of a version permanently authorizes you to
+choose that version for the Program.
+
+Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+### 15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
+WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
+PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
+DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+### 16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
+CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
+NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
+LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
+TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
+PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+### 17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+## How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these
+terms.
+
+To do so, attach the following notices to the program. It is safest to
+attach them to the start of each source file to most effectively state
+the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+        <one line to give the program's name and a brief idea of what it does.>
+        Copyright (C) <year>  <name of author>
+
+        This program is free software: you can redistribute it and/or modify
+        it under the terms of the GNU General Public License as published by
+        the Free Software Foundation, either version 3 of the License, or
+        (at your option) any later version.
+
+        This program is distributed in the hope that it will be useful,
+        but WITHOUT ANY WARRANTY; without even the implied warranty of
+        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+        GNU General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper
+mail.
+
+If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+        <program>  Copyright (C) <year>  <name of author>
+        This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+        This is free software, and you are welcome to redistribute it
+        under certain conditions; type `show c' for details.
+
+The hypothetical commands \`show w' and \`show c' should show the
+appropriate parts of the General Public License. Of course, your
+program's commands might be different; for a GUI interface, you would
+use an "about box".
+
+You should also get your employer (if you work as a programmer) or
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. For more information on this, and how to apply and follow
+the GNU GPL, see <https://www.gnu.org/licenses/>.
+
+The GNU General Public License does not permit incorporating your
+program into proprietary programs. If your program is a subroutine
+library, you may consider it more useful to permit linking proprietary
+applications with the library. If this is what you want to do, use the
+GNU Lesser General Public License instead of this License. But first,
+please read <https://www.gnu.org/licenses/why-not-lgpl.html>.

Devices/lilygo-tdeck-max/device.properties

@@ -18,6 +18,8 @@ hardware.bluetooth=true
 # Internal until the SD card is verified working on this board; switch to SD then.
 storage.userDataLocation=Internal
 
+dependencies.useDeprecatedHal=false
+
 display.size=3.1"
 display.shape=rectangle
 display.dpi=128

Devices/lilygo-tdeck-plus/device.properties

@@ -12,6 +12,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.8"

Devices/lilygo-tdeck-plus/source/module.cpp

@@ -1,14 +1,13 @@
 #include <tactility/delay.h>
 #include <tactility/error.h>
 #include <tactility/log.h>
+#include <lvgl/lvgl.h>
 #include <tactility/module.h>
-#include <tactility/system_event.h>
 
+#include <Tactility/SystemEvents.h>
 #include <Tactility/LogMessages.h>
 #include <Tactility/settings/TrackballSettings.h>
 
-#include <lvgl/lvgl.h>
-
 #include <lilygo/drivers/trackball.h>
 #include <lilygo/drivers/tdeck_power_on.h>
 
@@ -16,6 +15,8 @@ constexpr auto* TAG = "tdeck-plus";
 
 extern "C" {
 
+static tt::kernel::SystemEventSubscription tdeck_boot_splash_subscription = tt::kernel::NoSystemEventSubscription;
+
 void init_trackball() {
     auto tbSettings = tt::settings::trackball::loadOrGetDefault();
     lvgl_lock();
@@ -30,10 +31,6 @@ void init_trackball() {
     lvgl_unlock();
 }
 
-static void on_boot_completed(struct SystemEvent* /*event*/, void* /*context*/) {
-    init_trackball();
-}
-
 static error_t start() {
     LOG_I(TAG, LOG_MESSAGE_POWER_ON_START);
 
@@ -45,13 +42,16 @@ static error_t start() {
     // Avoids crash when no SD card is inserted. It's unknown why, but likely is related to power draw.
     delay_millis(100);
 
-    system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, on_boot_completed, nullptr);
+    tdeck_boot_splash_subscription = tt::kernel::subscribeSystemEvent(tt::kernel::SystemEvent::BootSplash, [](tt::kernel::SystemEvent event) {
+        init_trackball();
+    });
 
     return ERROR_NONE;
 }
 
 static error_t stop() {
-    system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, on_boot_completed);
+    tt::kernel::unsubscribeSystemEvent(tdeck_boot_splash_subscription);
+    tdeck_boot_splash_subscription = tt::kernel::NoSystemEventSubscription;
     return ERROR_NONE;
 }
 

Devices/lilygo-tdeck-pro/LICENSE-Apache-2.0.md

@@ -1,195 +0,0 @@
-Apache License
-==============
-
-_Version 2.0, January 2004_  
-_&lt;<http://www.apache.org/licenses/>&gt;_
-
-### Terms and Conditions for use, reproduction, and distribution
-
-#### 1. Definitions
-
-“License” shall mean the terms and conditions for use, reproduction, and
-distribution as defined by Sections 1 through 9 of this document.
-
-“Licensor” shall mean the copyright owner or entity authorized by the copyright
-owner that is granting the License.
-
-“Legal Entity” shall mean the union of the acting entity and all other entities
-that control, are controlled by, or are under common control with that entity.
-For the purposes of this definition, “control” means **(i)** the power, direct or
-indirect, to cause the direction or management of such entity, whether by
-contract or otherwise, or **(ii)** ownership of fifty percent (50%) or more of the
-outstanding shares, or **(iii)** beneficial ownership of such entity.
-
-“You” (or “Your”) shall mean an individual or Legal Entity exercising
-permissions granted by this License.
-
-“Source” form shall mean the preferred form for making modifications, including
-but not limited to software source code, documentation source, and configuration
-files.
-
-“Object” form shall mean any form resulting from mechanical transformation or
-translation of a Source form, including but not limited to compiled object code,
-generated documentation, and conversions to other media types.
-
-“Work” shall mean the work of authorship, whether in Source or Object form, made
-available under the License, as indicated by a copyright notice that is included
-in or attached to the work (an example is provided in the Appendix below).
-
-“Derivative Works” shall mean any work, whether in Source or Object form, that
-is based on (or derived from) the Work and for which the editorial revisions,
-annotations, elaborations, or other modifications represent, as a whole, an
-original work of authorship. For the purposes of this License, Derivative Works
-shall not include works that remain separable from, or merely link (or bind by
-name) to the interfaces of, the Work and Derivative Works thereof.
-
-“Contribution” shall mean any work of authorship, including the original version
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Devices/lilygo-tdeck-pro/LICENSE-GPL-3.0.md

@@ -0,0 +1,675 @@
+# GNU GENERAL PUBLIC LICENSE
+
+Version 3, 29 June 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc.
+<https://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+## Preamble
+
+The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+The licenses for most software and other practical works are designed
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+it to your programs, too.
+
+When we speak of free software, we are referring to freedom, not
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+The precise terms and conditions for copying, distribution and
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+
+## TERMS AND CONDITIONS
+
+### 0. Definitions.
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+### 7. Additional Terms.
+
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+You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License. For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+### 11. Patents.
+
+A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based. The
+work thus licensed is called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims owned
+or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version. For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement). To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients. "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+A patent license is "discriminatory" if it does not include within the
+scope of its coverage, prohibits the exercise of, or is conditioned on
+the non-exercise of one or more of the rights that are specifically
+granted under this License. You may not convey a covered work if you
+are a party to an arrangement with a third party that is in the
+business of distributing software, under which you make payment to the
+third party based on the extent of your activity of conveying the
+work, and under which the third party grants, to any of the parties
+who would receive the covered work from you, a discriminatory patent
+license (a) in connection with copies of the covered work conveyed by
+you (or copies made from those copies), or (b) primarily for and in
+connection with specific products or compilations that contain the
+covered work, unless you entered into that arrangement, or that patent
+license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+### 12. No Surrender of Others' Freedom.
+
+If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under
+this License and any other pertinent obligations, then as a
+consequence you may not convey it at all. For example, if you agree to
+terms that obligate you to collect a royalty for further conveying
+from those to whom you convey the Program, the only way you could
+satisfy both those terms and this License would be to refrain entirely
+from conveying the Program.
+
+### 13. Use with the GNU Affero General Public License.
+
+Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work. The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+### 14. Revised Versions of this License.
+
+The Free Software Foundation may publish revised and/or new versions
+of the GNU General Public License from time to time. Such new versions
+will be similar in spirit to the present version, but may differ in
+detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies that a certain numbered version of the GNU General Public
+License "or any later version" applies to it, you have the option of
+following the terms and conditions either of that numbered version or
+of any later version published by the Free Software Foundation. If the
+Program does not specify a version number of the GNU General Public
+License, you may choose any version ever published by the Free
+Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions
+of the GNU General Public License can be used, that proxy's public
+statement of acceptance of a version permanently authorizes you to
+choose that version for the Program.
+
+Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+### 15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
+WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
+PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
+DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+### 16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
+CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
+NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
+LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
+TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
+PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+### 17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+## How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these
+terms.
+
+To do so, attach the following notices to the program. It is safest to
+attach them to the start of each source file to most effectively state
+the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+        <one line to give the program's name and a brief idea of what it does.>
+        Copyright (C) <year>  <name of author>
+
+        This program is free software: you can redistribute it and/or modify
+        it under the terms of the GNU General Public License as published by
+        the Free Software Foundation, either version 3 of the License, or
+        (at your option) any later version.
+
+        This program is distributed in the hope that it will be useful,
+        but WITHOUT ANY WARRANTY; without even the implied warranty of
+        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+        GNU General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper
+mail.
+
+If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+        <program>  Copyright (C) <year>  <name of author>
+        This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+        This is free software, and you are welcome to redistribute it
+        under certain conditions; type `show c' for details.
+
+The hypothetical commands \`show w' and \`show c' should show the
+appropriate parts of the General Public License. Of course, your
+program's commands might be different; for a GUI interface, you would
+use an "about box".
+
+You should also get your employer (if you work as a programmer) or
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. For more information on this, and how to apply and follow
+the GNU GPL, see <https://www.gnu.org/licenses/>.
+
+The GNU General Public License does not permit incorporating your
+program into proprietary programs. If your program is a subroutine
+library, you may consider it more useful to permit linking proprietary
+applications with the library. If this is what you want to do, use the
+GNU Lesser General Public License instead of this License. But first,
+please read <https://www.gnu.org/licenses/why-not-lgpl.html>.

Devices/lilygo-tdeck-pro/device.properties

@@ -17,6 +17,8 @@ hardware.bluetooth=true
 
 storage.userDataLocation=SD
 
+dependencies.useDeprecatedHal=false
+
 display.size=3.1"
 display.shape=rectangle
 display.dpi=128

Devices/lilygo-tdeck/device.properties

@@ -12,6 +12,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.8"

Devices/lilygo-tdeck/source/module.cpp

@@ -5,8 +5,7 @@
 
 #include <lvgl/lvgl.h>
 
-#include <tactility/system_event.h>
+#include <Tactility/SystemEvents.h>
-
 #include <Tactility/LogMessages.h>
 #include <Tactility/kernel/Kernel.h>
 #include <Tactility/settings/TrackballSettings.h>
@@ -18,24 +17,22 @@ constexpr auto* TAG = "tdeck";
 
 extern "C" {
 
-static void on_boot_completed(struct SystemEvent* /*event*/, void* /*context*/) {
-    auto tbSettings = tt::settings::trackball::loadOrGetDefault();
-    lvgl_lock();
-    if (trackball::init() != nullptr) {
-        trackball::setMode(tbSettings.trackballMode == tt::settings::trackball::TrackballMode::Pointer
-            ? trackball::Mode::Pointer
-            : trackball::Mode::Encoder);
-        trackball::setEncoderSensitivity(tbSettings.encoderSensitivity);
-        trackball::setPointerSensitivity(tbSettings.pointerSensitivity);
-        trackball::setEnabled(tbSettings.trackballEnabled);
-    }
-    lvgl_unlock();
-}
-
 void subscribe_events() {
     // The kernel trackball device is already started by kernel_init(); this just registers it as an
     // LVGL input device and applies persisted settings, both of which require LVGL to be up first.
-    system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, on_boot_completed, nullptr);
+    tt::kernel::subscribeSystemEvent(tt::kernel::SystemEvent::BootSplash, [](tt::kernel::SystemEvent event) {
+        auto tbSettings = tt::settings::trackball::loadOrGetDefault();
+        lvgl_lock();
+        if (trackball::init() != nullptr) {
+            trackball::setMode(tbSettings.trackballMode == tt::settings::trackball::TrackballMode::Pointer
+                ? trackball::Mode::Pointer
+                : trackball::Mode::Encoder);
+            trackball::setEncoderSensitivity(tbSettings.encoderSensitivity);
+            trackball::setPointerSensitivity(tbSettings.pointerSensitivity);
+            trackball::setEnabled(tbSettings.trackballEnabled);
+        }
+        lvgl_unlock();
+    });
 }
 
 static error_t start() {

Devices/lilygo-tdisplay-s3/device.properties

@@ -13,6 +13,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=Internal
 
 display.size=1.9"

Devices/lilygo-tdisplay/CMakeLists.txt

@@ -2,5 +2,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 
 idf_component_register(
     SRCS ${SOURCE_FILES}
-    REQUIRES TactilityKernel
+    REQUIRES TactilityKernel driver
 )

Devices/lilygo-tdisplay/device.properties

@@ -10,6 +10,8 @@ hardware.flashSize=16MB
 hardware.spiRam=false
 hardware.esptoolFlashFreq=80M
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=Internal
 
 display.size=1.14"

Devices/lilygo-tdongle-s3/CMakeLists.txt

@@ -2,5 +2,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 
 idf_component_register(
     SRCS ${SOURCE_FILES}
-    REQUIRES TactilityKernel
+    REQUIRES TactilityKernel driver
 )

Devices/lilygo-tdongle-s3/device.properties

@@ -12,6 +12,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=0.96"

Devices/lilygo-thmi/CMakeLists.txt

@@ -2,5 +2,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 
 idf_component_register(
     SRCS ${SOURCE_FILES}
-    REQUIRES TactilityKernel
+    REQUIRES TactilityKernel driver
 )

Devices/lilygo-thmi/device.properties

@@ -12,6 +12,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.8"

Devices/lilygo-tlora-pager/CMakeLists.txt

@@ -3,5 +3,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 idf_component_register(
     SRCS ${SOURCE_FILES}
     INCLUDE_DIRS "source"
-    REQUIRES TactilityKernel
+    REQUIRES Tactility driver esp_adc platform-esp32 lilygo-module
 )

Devices/lilygo-tlora-pager/device.properties

@@ -13,6 +13,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=40M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2.33"

Devices/lilygo-tlora-pager/source/module.cpp

@@ -1,8 +1,7 @@
 #include <lvgl/lvgl.h>
 #include <tactility/module.h>
 
-#include <tactility/system_event.h>
+#include <Tactility/SystemEvents.h>
-
 #include <Tactility/kernel/Kernel.h>
 
 #include <lilygo/drivers/tpager_encoder_input.h>
@@ -11,21 +10,22 @@ constexpr auto* TAG = "T-Lora Pager";
 
 extern "C" {
 
-static void on_boot_completed(struct SystemEvent* /*event*/, void* /*context*/) {
+tt::kernel::SystemEventSubscription event_subscription = tt::kernel::NoSystemEventSubscription;
-    // The kernel tpager_encoder device is already started by kernel_init(); this just
-    // registers it as an LVGL input device, which requires LVGL to be up first.
-    lvgl_lock();
-    tpager_encoder::init();
-    lvgl_unlock();
-}
 
 static error_t start() {
-    system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, on_boot_completed, nullptr);
+    event_subscription = tt::kernel::subscribeSystemEvent(tt::kernel::SystemEvent::BootSplash, [](tt::kernel::SystemEvent) {
+        // The kernel tpager_encoder device is already started by kernel_init(); this just
+        // registers it as an LVGL input device, which requires LVGL to be up first.
+        lvgl_lock();
+        tpager_encoder::init();
+        lvgl_unlock();
+    });
     return ERROR_NONE;
 }
 
 static error_t stop() {
-    system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, on_boot_completed);
+    tt::kernel::unsubscribeSystemEvent(event_subscription);
+    event_subscription = tt::kernel::NoSystemEventSubscription;
     return ERROR_NONE;
 }
 

Devices/m5stack-cardputer-adv/device.properties

@@ -10,6 +10,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=1.14"

Devices/m5stack-cardputer/device.properties

@@ -10,6 +10,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=1.14"

Devices/m5stack-core2/device.properties

@@ -12,6 +12,8 @@ hardware.esptoolFlashFreq=80M
 
 storage.userDataLocation=SD
 
+dependencies.useDeprecatedHal=false
+
 display.size=2"
 display.shape=rectangle
 display.dpi=200

Devices/m5stack-cores3/device.properties

@@ -14,6 +14,8 @@ hardware.bluetooth=true
 
 storage.userDataLocation=Internal
 
+dependencies.useDeprecatedHal=false
+
 display.size=2"
 display.shape=rectangle
 display.dpi=200

Devices/m5stack-papers3/device.properties

@@ -15,6 +15,8 @@ hardware.bluetooth=true
 
 storage.userDataLocation=SD
 
+dependencies.useDeprecatedHal=false
+
 display.size=4.7"
 display.shape=rectangle
 display.dpi=235

Devices/m5stack-stackchan/device.properties

@@ -12,6 +12,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=2"

Devices/m5stack-stickc-plus2/device.properties

@@ -10,6 +10,8 @@ hardware.spiRamMode=QUAD
 hardware.spiRamSpeed=80M
 hardware.esptoolFlashFreq=80M
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=Internal
 
 display.size=1.14"

Devices/m5stack-sticks3/device.properties

@@ -12,6 +12,8 @@ hardware.esptoolFlashFreq=80M
 hardware.tinyUsb=true
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=Internal
 
 display.size=1.14"

Devices/m5stack-tab5/CMakeLists.txt

@@ -3,5 +3,5 @@ file(GLOB_RECURSE SOURCE_FILES Source/*.c*)
 idf_component_register(
     SRCS ${SOURCE_FILES}
     INCLUDE_DIRS "Source"
-    REQUIRES TactilityKernel lvgl-module ina226-module ili9881c-module st7123-module gt911-module
+    REQUIRES Tactility esp_lvgl_port esp_lcd esp_lcd_ili9881c esp_lcd_st7123 esp_lcd_touch_st7123 esp_lcd_touch_gt911 driver esp_driver_i2c vfs fatfs ina226-module ili9881c-module st7123-module gt911-module
 )

Devices/unphone/CMakeLists.txt

@@ -3,5 +3,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 idf_component_register(
     SRCS ${SOURCE_FILES}
     INCLUDE_DIRS "source"
-    REQUIRES TactilityKernel TactilityFreeRtos bq24295-module driver
+    REQUIRES Tactility bq24295-module
 )

Devices/unphone/device.properties

@@ -10,6 +10,8 @@ hardware.spiRamMode=OCT
 hardware.spiRamSpeed=80M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=3.5"

Devices/unphone/source/drivers/unphone_nav_buttons.cpp

@@ -10,6 +10,8 @@
 #include <tactility/log.h>
 
 #include <Tactility/Thread.h>
+#include <Tactility/app/App.h>
+#include <Tactility/kernel/Kernel.h>
 
 #include <freertos/FreeRTOS.h>
 #include <freertos/queue.h>
@@ -70,7 +72,7 @@ static int32_t nav_buttons_thread_main(UnphoneNavButtonsInternal* internal) {
             // The buttons might generate more than 1 click because of how they are built
             LOG_I(TAG, "Pressed button %d", button_index);
             if (button_index == BUTTON1_INDEX) {
-                // TODO: Stop app implementation
+                tt::app::stop();
             }
 
             // Debounce all events for a short period of time

Devices/unphone/source/drivers/unphone_power_switch.cpp

@@ -3,7 +3,8 @@
 
 #include <tactility/driver.h>
 #include <tactility/drivers/gpio_controller.h>
-#include <tactility/error.h>
+#include <tactility/drivers/gpio_descriptor.h>
+#include <tactility/error_esp32.h>
 #include <tactility/log.h>
 
 #include <driver/rtc_io.h>
@@ -66,7 +67,7 @@ error_t unphone_power_switch_is_on(Device* device, bool* on) {
 error_t unphone_power_switch_enable_wake(Device* device) {
     auto* internal = static_cast<UnphonePowerSwitchInternal*>(device_get_driver_data(device));
     auto esp_error = esp_sleep_enable_ext0_wakeup(internal->native_pin, 1);
-    return esp_error == ESP_OK ? ERROR_NONE : ERROR_RESOURCE;
+    return esp_err_to_error(esp_error);
 }
 
 Driver unphone_power_switch_driver = {

Devices/unphone/source/init_boot.cpp

@@ -8,6 +8,7 @@
 #include <esp_sleep.h>
 #include <memory>
 
+#include <Tactility/LogMessages.h>
 #include <Tactility/Thread.h>
 
 constexpr auto* TAG = "unPhone";
@@ -96,10 +97,10 @@ static bool power_on() {
 }
 
 bool init_boot() {
-    LOG_I(TAG, "Power on start");
+    LOG_I(TAG, LOG_MESSAGE_POWER_ON_START);
 
     if (!power_on()) {
-        LOG_E(TAG, "Power on failed");
+        LOG_E(TAG, LOG_MESSAGE_POWER_ON_FAILED);
         return false;
     }
 

Devices/waveshare-esp32-s3-geek/CMakeLists.txt

@@ -3,5 +3,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 idf_component_register(
     SRCS ${SOURCE_FILES}
     INCLUDE_DIRS "source"
-    REQUIRES TactilityKernel
+    REQUIRES TactilityKernel driver
 )

Devices/waveshare-esp32-s3-geek/device.properties

@@ -14,6 +14,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=1.14"

Devices/waveshare-s3-lcd-13/CMakeLists.txt

@@ -2,5 +2,5 @@ file(GLOB_RECURSE SOURCE_FILES source/*.c*)
 
 idf_component_register(
     SRCS ${SOURCE_FILES}
-    REQUIRES TactilityKernel
+    REQUIRES TactilityKernel driver
 )

Devices/waveshare-s3-lcd-13/device.properties

@@ -14,6 +14,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=1.3"

Devices/waveshare-s3-touch-lcd-128/device.properties

@@ -14,6 +14,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=Internal
 
 display.size=1.28"

Devices/waveshare-s3-touch-lcd-147/device.properties

@@ -13,6 +13,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=1.47"

Devices/waveshare-s3-touch-lcd-43/device.properties

@@ -13,6 +13,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=120M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=4.3"

Devices/wireless-tag-wt32-sc01-plus/device.properties

@@ -12,6 +12,8 @@ hardware.tinyUsb=true
 hardware.esptoolFlashFreq=80M
 hardware.bluetooth=true
 
+dependencies.useDeprecatedHal=false
+
 storage.userDataLocation=SD
 
 display.size=3.5"

Firmware/Kconfig

@@ -77,6 +77,12 @@ menu "Tactility App"
     config TT_TDECK_WORKAROUND
         bool "Temporary work-around until we fix the T-Deck keyboard and trackball settings"
         default n
+    config TT_USE_DEPRECATED_HAL
+        bool "When set to false, it ensures an empty tt::hal::hardwareConfig is made automatically"
+        default y
+        help
+            This allows for migrating projects that don't use the old HAL.
+            When set to 'n', the project has an option to not depend on Tactility and can depend on TactilityKernel instead.
     choice TT_USER_DATA_LOCATION
         prompt "User Data Location"
         default TT_USER_DATA_LOCATION_INTERNAL

Platforms/platform-esp32/source/drivers/esp32_wifi.cpp

@@ -21,9 +21,6 @@
 #include <tactility/drivers/esp32_esp_hosted_ota.h>
 #endif
 
-#include "tactility/system_event.h"
-
-
 #include <algorithm>
 #include <cstring>
 #include <new>
@@ -117,10 +114,6 @@ void on_wifi_or_ip_event(void* arg, esp_event_base_t event_base, int32_t event_i
             result_event.type = WIFI_EVENT_TYPE_STATION_CONNECTION_RESULT;
             result_event.connection_error = WIFI_STATION_CONNECTION_ERROR_TARGET_NOT_FOUND;
             fire_event(ctx, result_event);
-            NetworkDisconnectedEvent disconnected_event = {
-                .device = ctx->device
-            };
-            system_event_emit(KERNEL_EVENT_NETWORK_DISCONNECTED, &disconnected_event, sizeof(disconnected_event));
         }
     } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
         auto* got_ip = static_cast<ip_event_got_ip_t*>(event_data);
@@ -139,13 +132,6 @@ void on_wifi_or_ip_event(void* arg, esp_event_base_t event_base, int32_t event_i
         result_event.type = WIFI_EVENT_TYPE_STATION_CONNECTION_RESULT;
         result_event.connection_error = WIFI_STATION_CONNECTION_ERROR_NONE;
         fire_event(ctx, result_event);
-
-        NetworkConnectedEvent connected_event = {
-            .device = ctx->device,
-            .ipv4_addr = ctx->ipInfo.ip.addr,
-            .gateway = ctx->ipInfo.gw.addr,
-        };
-        system_event_emit(KERNEL_EVENT_NETWORK_CONNECTED, &connected_event, sizeof(connected_event));
     } else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_SCAN_DONE) {
         mutex_lock(&ctx->mutex);
         ctx->scanning = false;

Tactility/Include/Tactility/SystemEvents.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <cstdint>
+#include <functional>
+
+namespace tt::kernel {
+
+enum class SystemEvent {
+    BootSplash,
+    /** Gained IP address */
+    NetworkConnected,
+    NetworkDisconnected,
+    Time,
+};
+
+/** Value 0 mean "no subscription" */
+typedef uint32_t SystemEventSubscription;
+constexpr SystemEventSubscription NoSystemEventSubscription = 0U;
+
+typedef std::function<void(SystemEvent)> OnSystemEvent;
+
+void publishSystemEvent(SystemEvent event);
+
+SystemEventSubscription subscribeSystemEvent(SystemEvent event, OnSystemEvent handler);
+
+void unsubscribeSystemEvent(SystemEventSubscription subscription);
+
+}

Tactility/Include/Tactility/service/rtctime/RtcTimeService.h

@@ -1,22 +1,21 @@
 #pragma once
 
+#include <Tactility/SystemEvents.h>
 #include <Tactility/service/Service.h>
 
 #include <memory>
 
 struct Device;
-struct SystemEvent;
 
 namespace tt::service::rtctime {
 
 class RtcTimeService final : public Service {
 
-    bool timeEventSubscribed = false;
+    kernel::SystemEventSubscription timeEventSubscription = 0;
     Device* rtcDevice = nullptr;
 
     Device* findRtcDevice();
-    void onTimeChanged();
+    void onTimeChanged(kernel::SystemEvent event);
-    static void onTimeChangedTrampoline(struct SystemEvent* event, void* context);
 
 public:
 

Tactility/Source/SystemEvents.cpp

@@ -0,0 +1,81 @@
+#include <Tactility/CoreDefines.h>
+#include <Tactility/Mutex.h>
+#include <Tactility/SystemEvents.h>
+
+#include <tactility/check.h>
+#include <tactility/log.h>
+#include <tactility/time.h>
+
+#include <list>
+
+namespace tt::kernel {
+
+constexpr auto* TAG = "SystemEvents";
+
+struct SubscriptionData {
+    SystemEventSubscription id;
+    SystemEvent event;
+    OnSystemEvent handler;
+};
+
+static Mutex mutex;
+static SystemEventSubscription subscriptionCounter = 0;
+static std::list<SubscriptionData> subscriptions;
+
+static const char* getEventName(SystemEvent event) {
+    switch (event) {
+        using enum SystemEvent;
+        case BootSplash:
+            return TT_STRINGIFY(BootSplash);
+        case NetworkConnected:
+            return TT_STRINGIFY(NetworkConnected);
+        case NetworkDisconnected:
+            return TT_STRINGIFY(NetworkDisconnected);
+        case Time:
+            return TT_STRINGIFY(Time);
+    }
+
+    check(false); // Missing case above
+}
+
+void publishSystemEvent(SystemEvent event) {
+    LOG_I(TAG, "%s", getEventName(event));
+
+    if (mutex.lock(MAX_TICKS)) {
+        for (auto& subscription : subscriptions) {
+            if (subscription.event == event) {
+                subscription.handler(event);
+            }
+        }
+
+        mutex.unlock();
+    }
+}
+
+SystemEventSubscription subscribeSystemEvent(SystemEvent event, OnSystemEvent handler) {
+    if (mutex.lock(MAX_TICKS)) {
+        auto id = ++subscriptionCounter;
+
+        subscriptions.push_back({
+            .id = id,
+            .event = event,
+            .handler = handler
+        });
+
+        mutex.unlock();
+        return id;
+    } else {
+        check(false);
+    }
+}
+
+void unsubscribeSystemEvent(SystemEventSubscription subscription) {
+    if (mutex.lock(MAX_TICKS)) {
+        std::erase_if(subscriptions, [subscription](auto& item) {
+            return (item.id == subscription);
+        });
+        mutex.unlock();
+    }
+}
+
+}

Tactility/Source/app/boot/Boot.cpp

@@ -1,6 +1,3 @@
-#include "tactility/system_event.h"
-
-
 #include <tactility/delay.h>
 #include <tactility/drivers/backlight.h>
 #include <tactility/drivers/display.h>
@@ -9,6 +6,7 @@
 
 #include <Tactility/CpuAffinity.h>
 #include <Tactility/Paths.h>
+#include <Tactility/SystemEvents.h>
 #include <Tactility/TactilityPrivate.h>
 #include <Tactility/app/AppContext.h>
 #include <Tactility/app/AppPaths.h>
@@ -156,7 +154,7 @@ class BootApp : public App {
         // This event will likely block as other systems are initialized
         // e.g. Wi-Fi reads AP configs from SD card
         LOG_I(TAG, "Publish event");
-        system_event_emit(KERNEL_EVENT_BOOT_COMPLETED, nullptr, 0);
+        kernel::publishSystemEvent(kernel::SystemEvent::BootSplash);
 
         return 0;
     }

Tactility/Source/lvgl/Statusbar.cpp

@@ -1,5 +1,6 @@
 #define LV_USE_PRIVATE_API 1 // For actual lv_obj_t declaration
 
+#include <Tactility/SystemEvents.h>
 #include <Tactility/PubSub.h>
 #include <Tactility/RecursiveMutex.h>
 #include <Tactility/Tactility.h>
@@ -10,7 +11,6 @@
 
 #include <tactility/check.h>
 #include <tactility/log.h>
-#include <tactility/system_event.h>
 #include <tactility/time.h>
 
 #include <lvgl/fonts.h>
@@ -38,6 +38,7 @@ struct StatusbarData {
     uint8_t time_hours = 0;
     uint8_t time_minutes = 0;
     bool time_set = false;
+    kernel::SystemEventSubscription systemEventSubscription = 0;
 };
 
 static StatusbarData statusbar_data;
@@ -114,7 +115,7 @@ static void statusbar_pubsub_event(Statusbar* statusbar) {
     }
 }
 
-static void onTimeChanged(struct SystemEvent* /*event*/, void* /*context*/) {
+static void onTimeChanged(kernel::SystemEvent event) {
     if (statusbar_data.mutex.lock()) {
         statusbar_data.time_update_timer->reset(5);
         statusbar_data.mutex.unlock();
@@ -133,7 +134,10 @@ static void statusbar_constructor(const lv_obj_class_t* class_p, lv_obj_t* obj)
 
     if (!statusbar_data.time_update_timer->isRunning()) {
         statusbar_data.time_update_timer->start();
-        system_event_subscribe(KERNEL_EVENT_TIME_CHANGED, onTimeChanged, nullptr);
+        statusbar_data.systemEventSubscription = kernel::subscribeSystemEvent(
+            kernel::SystemEvent::Time,
+            onTimeChanged
+        );
     }
 }
 

Tactility/Source/network/Ntp.cpp

@@ -6,8 +6,8 @@
 #include <memory>
 
 #ifdef ESP_PLATFORM
+#include <Tactility/SystemEvents.h>
 #include <Tactility/TactilityCore.h>
-#include <tactility/system_event.h>
 #include <esp_netif_sntp.h>
 #include <esp_sntp.h>
 #endif
@@ -45,7 +45,7 @@ static void onTimeSynced(timeval* tv) {
     processedSyncEvent = true;
     esp_netif_sntp_deinit();
     storeTimeInNvs();
-    system_event_emit(KERNEL_EVENT_TIME_CHANGED, nullptr, 0);
+    kernel::publishSystemEvent(kernel::SystemEvent::Time);
 }
 
 void init() {

Tactility/Source/service/rtctime/RtcTimeService.cpp

@@ -8,7 +8,6 @@
 #include <tactility/device.h>
 #include <tactility/drivers/rtc.h>
 #include <tactility/log.h>
-#include <tactility/system_event.h>
 
 #include <cassert>
 #include <ctime>
@@ -97,17 +96,15 @@ static void writeRtcFromSystemTime(Device* rtc) {
     }
 }
 
-void RtcTimeService::onTimeChanged() {
+void RtcTimeService::onTimeChanged(kernel::SystemEvent event) {
-    Device* rtc = findRtcDevice();
+    if (event == kernel::SystemEvent::Time) {
-    if (rtc) {
+        Device* rtc = findRtcDevice();
-        writeRtcFromSystemTime(rtc);
+        if (rtc) {
+            writeRtcFromSystemTime(rtc);
+        }
     }
 }
 
-void RtcTimeService::onTimeChangedTrampoline(struct SystemEvent* /*event*/, void* context) {
-    static_cast<RtcTimeService*>(context)->onTimeChanged();
-}
-
 bool RtcTimeService::onStart(ServiceContext& serviceContext) {
     Device* rtc = findRtcDevice();
     if (!rtc) {
@@ -116,21 +113,22 @@ bool RtcTimeService::onStart(ServiceContext& serviceContext) {
     }
 
     if (setSystemTimeFromRtc(rtc)) {
-        // Emit time event so other components know time is now valid
+        // Publish time event so other components know time is now valid
-        system_event_emit(KERNEL_EVENT_TIME_CHANGED, nullptr, 0);
+        kernel::publishSystemEvent(kernel::SystemEvent::Time);
     }
 
-    if (system_event_subscribe(KERNEL_EVENT_TIME_CHANGED, &RtcTimeService::onTimeChangedTrampoline, this) == ERROR_NONE) {
+    timeEventSubscription = kernel::subscribeSystemEvent(
-        timeEventSubscribed = true;
+        kernel::SystemEvent::Time,
-    }
+        [this](kernel::SystemEvent event) { onTimeChanged(event); }
+    );
 
     return true;
 }
 
 void RtcTimeService::onStop(ServiceContext& serviceContext) {
-    if (timeEventSubscribed) {
+    if (timeEventSubscription != 0) {
-        system_event_unsubscribe(KERNEL_EVENT_TIME_CHANGED, &RtcTimeService::onTimeChangedTrampoline);
+        kernel::unsubscribeSystemEvent(timeEventSubscription);
-        timeEventSubscribed = false;
+        timeEventSubscription = 0;
     }
 
     if (rtcDevice) {

Tactility/Source/service/wifi/Wifi.cpp

@@ -3,6 +3,7 @@
 #include <Tactility/CoreDefines.h>
 #include <Tactility/LogMessages.h>
 #include <Tactility/RecursiveMutex.h>
+#include <Tactility/SystemEvents.h>
 #include <Tactility/Tactility.h>
 #include <Tactility/Timer.h>
 #include <Tactility/service/Service.h>
@@ -15,7 +16,6 @@
 #include <tactility/device.h>
 #include <tactility/drivers/wifi.h>
 #include <tactility/log.h>
-#include <tactility/system_event.h>
 #include <tactility/time.h>
 #include <tactility/wifi_auto_scan.h>
 
@@ -78,7 +78,7 @@ struct WifiServiceState {
     uint16_t scanRecordLimit = TT_WIFI_SCAN_RECORD_LIMIT;
     TickType_t lastScanTime = MAX_TICKS;
     std::unique_ptr<Timer> autoConnectTimer;
-    bool bootEventSubscribed = false;
+    kernel::SystemEventSubscription bootEventSubscription = kernel::NoSystemEventSubscription;
 };
 
 WifiServiceState state;
@@ -278,7 +278,7 @@ void onAutoConnectTimer() {
 
 // ---- Kernel driver event bridge ----
 
-void onWifiDeviceEvent(Device* device, void* /*context*/, ::WifiEvent event) {
+void onWifiDeviceEvent(Device* /*device*/, void* /*context*/, ::WifiEvent event) {
     switch (event.type) {
         case WIFI_EVENT_TYPE_SCAN_FINISHED:
             getMainDispatcher().dispatch([] { dispatchAutoConnect(); });
@@ -291,8 +291,7 @@ void onWifiDeviceEvent(Device* device, void* /*context*/, ::WifiEvent event) {
                 // Resetting it on every disconnect (including deliberate ones) would
                 // let auto-connect immediately reconnect the user. Attempts that fail
                 // while pending are unpaused via WIFI_EVENT_TYPE_STATION_CONNECTION_RESULT below.
-                NetworkDisconnectedEvent disconnected_event = { .device = device };
+                kernel::publishSystemEvent(kernel::SystemEvent::NetworkDisconnected);
-                system_event_emit(KERNEL_EVENT_NETWORK_DISCONNECTED, &disconnected_event, sizeof(disconnected_event));
             }
             break;
 
@@ -320,6 +319,7 @@ void onWifiDeviceEvent(Device* device, void* /*context*/, ::WifiEvent event) {
                 if (remember && !settings::save(target)) {
                     LOG_E(TAG, "Failed to store credentials");
                 }
+                kernel::publishSystemEvent(kernel::SystemEvent::NetworkConnected);
             } else {
                 // The pending connection attempt (which paused auto-connect via connect())
                 // failed; unpause so auto-connect can try other saved APs.
@@ -492,10 +492,6 @@ std::string getIp() {
 
 namespace {
 
-void onBootCompleted(struct SystemEvent* /*event*/, void* /*context*/) {
-    bootSplashInit();
-}
-
 class WifiService final : public Service {
 
 public:
@@ -510,9 +506,9 @@ public:
             LOG_W(TAG, "No WiFi device found");
         }
 
-        if (system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, onBootCompleted, nullptr) == ERROR_NONE) {
+        state.bootEventSubscription = kernel::subscribeSystemEvent(kernel::SystemEvent::BootSplash, [](auto) {
-            state.bootEventSubscribed = true;
+            bootSplashInit();
-        }
+        });
 
         auto timer_interval = std::min(2000, AUTO_SCAN_INTERVAL);
         state.autoConnectTimer = std::make_unique<Timer>(Timer::Type::Periodic, timer_interval, [] { onAutoConnectTimer(); });
@@ -530,10 +526,8 @@ public:
         state.autoConnectTimer->stop();
         state.autoConnectTimer = nullptr; // Must release as it holds a reference via its callback.
 
-        if (state.bootEventSubscribed) {
+        kernel::unsubscribeSystemEvent(state.bootEventSubscription);
-            system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, onBootCompleted);
+        state.bootEventSubscription = kernel::NoSystemEventSubscription;
-            state.bootEventSubscribed = false;
-        }
 
         if (state.device != nullptr && device_is_ready(state.device)) {
             wifi_remove_event_callback(state.device, onWifiDeviceEvent);

Tactility/Source/settings/time.cpp

@@ -1,10 +1,9 @@
 #include <Tactility/settings/Time.h>
 
+#include <Tactility/SystemEvents.h>
 #include <Tactility/Preferences.h>
 #include <Tactility/settings/SystemSettings.h>
 
-#include <tactility/system_event.h>
-
 #ifdef ESP_PLATFORM
 #include <ctime>
 #endif
@@ -37,7 +36,7 @@ void setTimeZone(const std::string& name, const std::string& code) {
     tzset();
 #endif
 
-    system_event_emit(KERNEL_EVENT_TIME_CHANGED, nullptr, 0);
+    kernel::publishSystemEvent(kernel::SystemEvent::Time);
 }
 
 std::string getTimeZoneName() {

TactilityC/Source/tt_init.cpp

@@ -72,7 +72,6 @@ const esp_elfsym main_symbols[] {
     ESP_ELFSYM_EXPORT(rand),
     ESP_ELFSYM_EXPORT(srand),
     ESP_ELFSYM_EXPORT(rand_r),
-    ESP_ELFSYM_EXPORT(atof),
     ESP_ELFSYM_EXPORT(atoi),
     ESP_ELFSYM_EXPORT(atol),
     ESP_ELFSYM_EXPORT(system),

TactilityKernel/include/tactility/system_event.h

@@ -1,130 +0,0 @@
-// SPDX-License-Identifier: Apache-2.0
-#pragma once
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <tactility/error.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct Device;
-struct FileSystem;
-
-/** Identifies a system-wide event */
-enum SystemEventType {
-    KERNEL_EVENT_BOOT_COMPLETED, // No data
-    KERNEL_EVENT_NETWORK_CONNECTED, // struct NetworkConnectedEvent
-    KERNEL_EVENT_NETWORK_DISCONNECTED, // struct NetworkDisconnectedEvent
-    KERNEL_EVENT_FILE_SYSTEM_MOUNTED, // struct FileSystemMountedEvent
-    KERNEL_EVENT_FILE_SYSTEM_UNMOUNTED, // struct FileSystemUnmountedEvent
-    KERNEL_EVENT_SERVICE_STARTED, // ServiceStartedEvent
-    KERNEL_EVENT_SERVICE_STOPPED, // ServiceStoppedEvent
-    KERNEL_EVENT_TIME_CHANGED, // No data - fired whenever system time is set (NTP sync, RTC restore, manual change)
-};
-
-/**
- * A system-wide event as delivered to a system_event_callback_t.
- * `data` points at the type-specific struct documented next to `type`'s enum value
- * in SystemEventType (or is NULL when none is documented).
- * It is only valid for the duration of the callback.
- */
-struct SystemEvent {
-    enum SystemEventType type;
-    /** Microseconds since boot, from get_micros_since_boot(). */
-    uint64_t timestamp;
-    const void *data;
-    size_t data_len;
-};
-
-/** Data for KERNEL_EVENT_NETWORK_CONNECTED. */
-struct NetworkConnectedEvent {
-    struct Device* device;
-    uint32_t ipv4_addr;
-    uint32_t gateway;
-};
-
-/** Data for KERNEL_EVENT_NETWORK_DISCONNECTED. */
-struct NetworkDisconnectedEvent {
-    struct Device* device;
-};
-
-/** Data for KERNEL_EVENT_FILE_SYSTEM_MOUNTED. */
-struct FileSystemMountedEvent {
-    struct FileSystem* file_system;
-};
-
-/** Data for KERNEL_EVENT_FILE_SYSTEM_UNMOUNTED. */
-struct FileSystemUnmountedEvent {
-    struct FileSystem* file_system;
-};
-
-/** Data for KERNEL_EVENT_SERVICE_STARTED. */
-struct ServiceStartedEvent {
-    const char* id;
-};
-
-/** Data for KERNEL_EVENT_SERVICE_STOPPED. */
-struct ServiceStoppedEvent {
-    const char* id;
-};
-
-/**
- * @param[in] event the event being delivered; only valid for the duration of the call
- * @param[in] context the context pointer passed to system_event_subscribe()
- */
-typedef void (*system_event_callback_t)(struct SystemEvent* event, void* context);
-
-/**
- * Subscribe to system events of a given type.
- * @warning Does not work in ISR context.
- * @warning @a callback is invoked synchronously, on the caller's task, from within
- * system_event_emit(). The internal subscription lock is not held during the call, so
- * @a callback may itself call system_event_subscribe(), system_event_unsubscribe() or
- * system_event_emit() without deadlocking - but a subscribe/unsubscribe made from within
- * a callback only takes effect for events emitted after the current system_event_emit()
- * call returns, since that call already snapshotted the subscriptions it will invoke.
- * @param[in] type the event type to subscribe to
- * @param[in] callback the callback to invoke when a matching event is emitted
- * @param[in] context an opaque pointer passed back to @a callback unmodified
- * @return ERROR_NONE on success
- */
-error_t system_event_subscribe(
-    enum SystemEventType type,
-    system_event_callback_t callback,
-    void *context
-);
-
-/**
- * Remove a previously added subscription.
- * @warning Does not work in ISR context.
- * @param[in] type the event type passed to the matching system_event_subscribe() call
- * @param[in] callback the callback passed to the matching system_event_subscribe() call
- * @return ERROR_NONE on success, ERROR_NOT_FOUND if no matching subscription exists
- */
-error_t system_event_unsubscribe(
-    enum SystemEventType type,
-    system_event_callback_t callback
-);
-
-/**
- * Emit a system event, synchronously invoking every subscription registered for @a type
- * (in subscription order) on the calling task before returning.
- * @warning Does not work in ISR context.
- * @param[in] type the event type
- * @param[in] data optional pointer to the type-specific event struct (see SystemEventType);
- * only valid for the duration of this call, subscribers must not retain it
- * @param[in] data_len size of @a data in bytes (0 if @a data is NULL)
- * @return ERROR_NONE on success
- */
-error_t system_event_emit(
-    enum SystemEventType type,
-    const void* data,
-    size_t data_len
-);
-
-#ifdef __cplusplus
-}
-#endif

TactilityKernel/include/tactility/time.h

@@ -64,17 +64,17 @@ static inline TickType_t get_timeout_remaining_ticks(TickType_t timeout, TickTyp
 uint32_t kernel_get_tick_frequency();
 
 /** @return the microseconds that have passed since boot */
-static inline uint64_t get_micros_since_boot() {
+static inline int64_t get_micros_since_boot() {
 #ifdef ESP_PLATFORM
     return esp_timer_get_time();
 #else
     struct timespec ts;
     if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0) {
-        return ((uint64_t)ts.tv_sec * 1000000LL) + (ts.tv_nsec / 1000);
+        return ((int64_t)ts.tv_sec * 1000000LL) + (ts.tv_nsec / 1000);
     }
     struct timeval tv;
     gettimeofday(&tv, NULL);
-    return ((uint64_t)tv.tv_sec * 1000000LL) + tv.tv_usec;
+    return ((int64_t)tv.tv_sec * 1000000LL) + tv.tv_usec;
 #endif
 }
 

TactilityKernel/source/filesystem/file_system.cpp

@@ -1,10 +1,10 @@
 // SPDX-License-Identifier: Apache-2.0
 
 #include <algorithm>
-#include <tactility/concurrent/recursive_mutex.h>
 #include <tactility/device.h>
+#include <tactility/concurrent/mutex.h>
+#include <tactility/concurrent/recursive_mutex.h>
 #include <tactility/filesystem/file_system.h>
-#include <tactility/system_event.h>
 #include <vector>
 
 // Define the internal FileSystem structure
@@ -78,21 +78,11 @@ void file_system_for_each(void* callback_context, bool (*callback)(FileSystem* f
 error_t file_system_mount(FileSystem* fs) {
     // Assuming 'device' is accessible or passed via a different mechanism
     // as it's required by the FileSystemApi signatures.
-    auto result = fs->api->mount(fs->data);
+    return fs->api->mount(fs->data);
-    if (result == ERROR_NONE) {
-        FileSystemMountedEvent mounted_event = { .file_system = fs };
-        system_event_emit(KERNEL_EVENT_FILE_SYSTEM_MOUNTED, &mounted_event, sizeof(mounted_event));
-    }
-    return result;
 }
 
 error_t file_system_unmount(FileSystem* fs) {
-    auto result = fs->api->unmount(fs->data);
+    return fs->api->unmount(fs->data);
-    if (result == ERROR_NONE) {
-        FileSystemUnmountedEvent unmounted_event = { .file_system = fs };
-        system_event_emit(KERNEL_EVENT_FILE_SYSTEM_UNMOUNTED, &unmounted_event, sizeof(unmounted_event));
-    }
-    return result;
 }
 
 bool file_system_is_mounted(FileSystem* fs) {

TactilityKernel/source/service/service_manager.cpp

@@ -1,9 +1,6 @@
 // SPDX-License-Identifier: Apache-2.0
 
 #include <tactility/service/service_manager.h>
-
-#include "tactility/system_event.h"
-
 #include <tactility/concurrent/mutex.h>
 #include <tactility/log.h>
 
@@ -125,8 +122,6 @@ error_t service_manager_start(const char* id) {
 
     if (error == ERROR_NONE) {
         service_instance_set_state(instance, SERVICE_STATE_STARTED);
-        ServiceStartedEvent start_event = { .id = id };
-        system_event_emit(KERNEL_EVENT_SERVICE_STARTED, &start_event, sizeof(start_event));
         return ERROR_NONE;
     }
 
@@ -170,9 +165,6 @@ error_t service_manager_stop(const char* id) {
     service_instance_destruct(instance);
     delete instance;
 
-    ServiceStoppedEvent stop_event = { .id = id };
-    system_event_emit(KERNEL_EVENT_SERVICE_STOPPED, &stop_event, sizeof(stop_event));
-
     return ERROR_NONE;
 }
 

TactilityKernel/source/system_event.cpp

@@ -1,120 +0,0 @@
-#include <tactility/system_event.h>
-
-#include <tactility/concurrent/mutex.h>
-#include <tactility/error.h>
-#include <tactility/time.h>
-
-#include <algorithm>
-#include <new>
-#include <vector>
-
-struct KernelEventSubscription {
-    SystemEventType type;
-    system_event_callback_t callback;
-    void* callback_context;
-};
-
-static std::vector<KernelEventSubscription> subscriptions;
-
-// Mutex is constructed/destructed via a static-lifetime wrapper because struct Mutex
-// itself has no constructor: mutex_lock() on an unconstructed handle is undefined
-// behaviour (the raw QueueHandle_t would be null).
-struct KernelEventMutex {
-    Mutex handle {};
-    KernelEventMutex() { mutex_construct(&handle); }
-    ~KernelEventMutex() { mutex_destruct(&handle); }
-};
-
-static KernelEventMutex subscriptions_mutex;
-
-extern "C" {
-
-error_t system_event_subscribe(
-    SystemEventType type,
-    system_event_callback_t callback,
-    void* context
-) {
-    mutex_lock(&subscriptions_mutex.handle);
-    subscriptions.push_back(KernelEventSubscription { type, callback, context });
-    mutex_unlock(&subscriptions_mutex.handle);
-
-    return ERROR_NONE;
-}
-
-error_t system_event_unsubscribe(
-    SystemEventType type,
-    system_event_callback_t callback
-) {
-    mutex_lock(&subscriptions_mutex.handle);
-    const auto iterator = std::ranges::find_if(subscriptions, [type, callback](const KernelEventSubscription& subscription) {
-        return subscription.type == type && subscription.callback == callback;
-    });
-    error_t result = ERROR_NOT_FOUND;
-    if (iterator != subscriptions.end()) {
-        subscriptions.erase(iterator);
-        result = ERROR_NONE;
-    }
-    mutex_unlock(&subscriptions_mutex.handle);
-
-    return result;
-}
-
-error_t system_event_emit(
-    enum SystemEventType type,
-    const void* data,
-    size_t data_len
-) {
-    SystemEvent event = {
-        .type = type,
-        .timestamp = get_micros_since_boot(),
-        .data = data,
-        .data_len = data_len,
-    };
-
-    // Snapshot matching subscriptions under the lock, then invoke after unlocking: a
-    // callback calling system_event_subscribe(), system_event_unsubscribe() or
-    // system_event_emit() would otherwise deadlock against this same (non-recursive)
-    // mutex, and a slow callback would block every other thread's subscribe/unsubscribe
-    // for the duration of this emit.
-    //
-    // Nothing between mutex_lock() and mutex_unlock() below may throw.
-    // Count first, then use new(std::nothrow) to allocate the exact size and report
-    // failure through the return value instead; the fill loop below is then a plain
-    // assignment of a trivially-copyable struct, which cannot throw or reallocate.
-
-    mutex_lock(&subscriptions_mutex.handle);
-
-    size_t match_count = 0;
-    for (const auto& subscription : subscriptions) {
-        if (subscription.type == type) {
-            match_count++;
-        }
-    }
-
-    KernelEventSubscription* matching = (match_count > 0)
-        ? new (std::nothrow) KernelEventSubscription[match_count]
-        : nullptr;
-    if (match_count > 0 && matching == nullptr) {
-        mutex_unlock(&subscriptions_mutex.handle);
-        return ERROR_OUT_OF_MEMORY;
-    }
-
-    size_t matched_count = 0;
-    for (const auto& subscription : subscriptions) {
-        if (subscription.type == type) {
-            matching[matched_count++] = subscription;
-        }
-    }
-
-    mutex_unlock(&subscriptions_mutex.handle);
-
-    for (size_t i = 0; i < matched_count; i++) {
-        matching[i].callback(&event, matching[i].callback_context);
-    }
-
-    delete[] matching;
-
-    return ERROR_NONE;
-}
-
-} // extern "C"

Tests/TactilityKernel/Source/SystemEventTest.cpp

@@ -1,215 +0,0 @@
-#include "doctest.h"
-
-#include <tactility/system_event.h>
-#include <tactility/time.h>
-
-#include <vector>
-
-// system_event_emit() snapshots matching subscriptions under the lock, then invokes them
-// after unlocking (see the @warning on system_event_subscribe() in system_event.h), so a
-// callback calling system_event_subscribe()/_unsubscribe()/_emit() must not deadlock -
-// covered below, mirroring DeviceListenerTest.cpp's reentrancy test.
-
-struct RecordedCall {
-    void* context;
-    SystemEventType type;
-    const void* data;
-    size_t data_len;
-    uint64_t timestamp;
-};
-
-static std::vector<RecordedCall> calls_a;
-static std::vector<RecordedCall> calls_b;
-
-static void listener_a(SystemEvent* event, void* context) {
-    calls_a.push_back({ context, event->type, event->data, event->data_len, event->timestamp });
-}
-
-static void listener_b(SystemEvent* event, void* context) {
-    calls_b.push_back({ context, event->type, event->data, event->data_len, event->timestamp });
-}
-
-static void reset_calls() {
-    calls_a.clear();
-    calls_b.clear();
-}
-
-TEST_CASE("system_event_emit invokes every subscriber registered for that type") {
-    reset_calls();
-    int context_a = 1;
-    int context_b = 2;
-
-    CHECK_EQ(system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a, &context_a), ERROR_NONE);
-    CHECK_EQ(system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_b, &context_b), ERROR_NONE);
-
-    CHECK_EQ(system_event_emit(KERNEL_EVENT_BOOT_COMPLETED, nullptr, 0), ERROR_NONE);
-
-    REQUIRE_EQ(calls_a.size(), 1);
-    CHECK_EQ(calls_a[0].context, &context_a);
-    CHECK_EQ(calls_a[0].type, KERNEL_EVENT_BOOT_COMPLETED);
-
-    REQUIRE_EQ(calls_b.size(), 1);
-    CHECK_EQ(calls_b[0].context, &context_b);
-
-    system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a);
-    system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_b);
-}
-
-TEST_CASE("system_event_emit only invokes subscribers registered for the emitted type") {
-    reset_calls();
-    int context_a = 1;
-    system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a, &context_a);
-
-    system_event_emit(KERNEL_EVENT_TIME_CHANGED, nullptr, 0);
-    CHECK_EQ(calls_a.size(), 0);
-
-    system_event_emit(KERNEL_EVENT_BOOT_COMPLETED, nullptr, 0);
-    CHECK_EQ(calls_a.size(), 1);
-
-    system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a);
-}
-
-TEST_CASE("system_event_emit passes the data pointer and length through unchanged") {
-    reset_calls();
-    int context_a = 1;
-    struct Payload { int value; } payload { 42 };
-
-    system_event_subscribe(KERNEL_EVENT_TIME_CHANGED, listener_a, &context_a);
-    system_event_emit(KERNEL_EVENT_TIME_CHANGED, &payload, sizeof(payload));
-
-    REQUIRE_EQ(calls_a.size(), 1);
-    CHECK_EQ(calls_a[0].data, &payload);
-    CHECK_EQ(calls_a[0].data_len, sizeof(payload));
-    CHECK_EQ(static_cast<const Payload*>(calls_a[0].data)->value, 42);
-
-    system_event_unsubscribe(KERNEL_EVENT_TIME_CHANGED, listener_a);
-}
-
-TEST_CASE("system_event_emit with no data passes a null pointer and zero length") {
-    reset_calls();
-    int context_a = 1;
-    system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a, &context_a);
-
-    system_event_emit(KERNEL_EVENT_BOOT_COMPLETED, nullptr, 0);
-
-    REQUIRE_EQ(calls_a.size(), 1);
-    CHECK_EQ(calls_a[0].data, nullptr);
-    CHECK_EQ(calls_a[0].data_len, 0);
-
-    system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a);
-}
-
-TEST_CASE("system_event_unsubscribe stops further notifications for that callback only") {
-    reset_calls();
-    int context_a = 1;
-    int context_b = 2;
-
-    system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a, &context_a);
-    system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_b, &context_b);
-
-    CHECK_EQ(system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a), ERROR_NONE);
-
-    system_event_emit(KERNEL_EVENT_BOOT_COMPLETED, nullptr, 0);
-
-    CHECK_EQ(calls_a.size(), 0);
-    CHECK_EQ(calls_b.size(), 1);
-
-    system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_b);
-}
-
-TEST_CASE("system_event_unsubscribe on an unregistered callback returns ERROR_NOT_FOUND and is a no-op") {
-    reset_calls();
-    int context_b = 2;
-    system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_b, &context_b);
-
-    // listener_a was never added for this type, so removing it must not disturb listener_b.
-    CHECK_EQ(system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a), ERROR_NOT_FOUND);
-
-    system_event_emit(KERNEL_EVENT_BOOT_COMPLETED, nullptr, 0);
-    CHECK_EQ(calls_b.size(), 1);
-
-    system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_b);
-}
-
-TEST_CASE("system_event_unsubscribe matches on (type, callback), not the callback alone") {
-    reset_calls();
-    int context_a = 1;
-
-    // Same callback subscribed for two different event types.
-    system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a, &context_a);
-    system_event_subscribe(KERNEL_EVENT_TIME_CHANGED, listener_a, &context_a);
-
-    system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a);
-
-    system_event_emit(KERNEL_EVENT_BOOT_COMPLETED, nullptr, 0);
-    CHECK_EQ(calls_a.size(), 0);
-
-    system_event_emit(KERNEL_EVENT_TIME_CHANGED, nullptr, 0);
-    CHECK_EQ(calls_a.size(), 1);
-
-    system_event_unsubscribe(KERNEL_EVENT_TIME_CHANGED, listener_a);
-}
-
-TEST_CASE("system_event_emit with no subscribers for that type returns ERROR_NONE") {
-    CHECK_EQ(system_event_emit(KERNEL_EVENT_SERVICE_STOPPED, nullptr, 0), ERROR_NONE);
-}
-
-TEST_CASE("system_event_emit stamps the event with the current boot-relative time") {
-    reset_calls();
-    int context_a = 1;
-    system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a, &context_a);
-
-    auto before = static_cast<uint64_t>(get_micros_since_boot());
-    system_event_emit(KERNEL_EVENT_BOOT_COMPLETED, nullptr, 0);
-    auto after = static_cast<uint64_t>(get_micros_since_boot());
-
-    REQUIRE_EQ(calls_a.size(), 1);
-    CHECK_GE(calls_a[0].timestamp, before);
-    CHECK_LE(calls_a[0].timestamp, after);
-
-    system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_a);
-}
-
-static bool reentrant_add_triggered = false;
-
-static void reentrant_listener(SystemEvent* event, void* context) {
-    calls_a.push_back({ context, event->type, event->data, event->data_len, event->timestamp });
-    if (!reentrant_add_triggered) {
-        reentrant_add_triggered = true;
-        // Subscribing from within a notification must not deadlock: emit() releases the
-        // lock before invoking callbacks, so this only blocks briefly on the (already
-        // unlocked) mutex.
-        system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_b, context);
-        // Also exercise unsubscribe() and a nested emit() of a different type from within
-        // a callback - all must complete without deadlocking.
-        system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, reentrant_listener);
-        system_event_emit(KERNEL_EVENT_TIME_CHANGED, nullptr, 0);
-    }
-}
-
-TEST_CASE("system_event_emit is safe when a callback subscribes, unsubscribes and emits during notification") {
-    reset_calls();
-    reentrant_add_triggered = false;
-    int context_a = 1;
-
-    system_event_subscribe(KERNEL_EVENT_BOOT_COMPLETED, reentrant_listener, &context_a);
-    system_event_subscribe(KERNEL_EVENT_TIME_CHANGED, listener_b, &context_a);
-
-    system_event_emit(KERNEL_EVENT_BOOT_COMPLETED, nullptr, 0);
-
-    // reentrant_listener unsubscribed itself and triggered a nested TIME_CHANGED emit,
-    // which the pre-existing listener_b subscription picks up. The listener_b
-    // subscription added *during* this round wasn't part of this round's snapshot, so it
-    // wasn't invoked for BOOT_COMPLETED yet.
-    CHECK_EQ(calls_a.size(), 1);
-    CHECK_EQ(calls_b.size(), 1);
-
-    // A second BOOT_COMPLETED emit must not reach reentrant_listener again (it
-    // unsubscribed itself), but must reach the listener_b subscription added last round.
-    system_event_emit(KERNEL_EVENT_BOOT_COMPLETED, nullptr, 0);
-    CHECK_EQ(calls_a.size(), 1);
-    CHECK_EQ(calls_b.size(), 2);
-
-    system_event_unsubscribe(KERNEL_EVENT_BOOT_COMPLETED, listener_b);
-    system_event_unsubscribe(KERNEL_EVENT_TIME_CHANGED, listener_b);
-}

device.py

@@ -169,6 +169,13 @@ def write_core_variables(output_file, device_properties: dict):
         output_file.write("CONFIG_ESP_WIFI_RX_IRAM_OPT=n\n")
         output_file.write("CONFIG_HEAP_PLACE_FUNCTION_INTO_FLASH=y\n")
         output_file.write("CONFIG_RINGBUF_PLACE_ISR_FUNCTIONS_INTO_FLASH=y\n")
+    # Usage of tt::hal can be disabled to simplify dependency wiring (device depends on TactilityKernel instead of Tactility)
+    use_deprecated_hal = get_property_or_none(device_properties, "dependencies.useDeprecatedHal")
+    if use_deprecated_hal is None or use_deprecated_hal.lower() == "true":
+        output_file.write("CONFIG_TT_USE_DEPRECATED_HAL=y\n")
+    else:
+        output_file.write("CONFIG_TT_USE_DEPRECATED_HAL=n\n")
+
 def write_flash_variables(output_file, device_properties: dict):
     flash_size = get_property_or_exit(device_properties, "hardware.flashSize")
     if not flash_size.endswith("MB"):