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Tactility/Drivers/pdm-mic-module
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Ken Van Hoeylandt 85b61e1e43
Improve module configuration (#661) 
DTS modules (device modules) often have a single source file with an empty `struct Module`.
The module's yaml file now allows a `dts-only` boolean to be set, so the source file becomes optional.
`devicetree.yaml` is renamed everywhere to `module.yaml`
2026-09-25 21:56:37 +02:00
..
bindings
Audio System + Drivers (#562)
2026-07-14 08:34:29 +02:00
include
Audio System + Drivers (#562)
2026-07-14 08:34:29 +02:00
source
ESP-IDF v6.1 (#649)
2026-09-13 00:52:16 +02:00
CMakeLists.txt
Audio System + Drivers (#562)
2026-07-14 08:34:29 +02:00
LICENSE-Apache-2.0.md
Audio System + Drivers (#562)
2026-07-14 08:34:29 +02:00
module.yaml
Improve module configuration (#661)
2026-09-25 21:56:37 +02:00
README.md
Audio System + Drivers (#562)
2026-07-14 08:34:29 +02:00

README.md

SPM1423 PDM microphone

A driver for the SPM1423 PDM MEMS microphone (and compatible PDM mics), wired as an input-only AUDIO_CODEC_TYPE device. Has no I2C/register interface -- just a PDM data line -- so there is no I2C parent; the device sits standalone in the devicetree and only references the I2S controller by name. PDM RX is hardware- restricted to I2S controller 0.

See https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/core/SPM1423HM4H-B_datasheet_en.pdf

License: Apache v2.0