From ecc0a9c07697802a7089db89dac0dae348698dc1 Mon Sep 17 00:00:00 2001
From: Fuji Pebri <f.pebri@tutanota.com>
Date: Fri, 6 Feb 2026 04:46:55 +0700
Subject: [PATCH] Added support for 1-line bus width SDMMC device mode (#482)

---
 Tactility/Include/Tactility/hal/sdcard/SdmmcDevice.h | 7 +++++--
 Tactility/Source/hal/sdcard/SdmmcDevice.cpp          | 4 ++--
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/Tactility/Include/Tactility/hal/sdcard/SdmmcDevice.h b/Tactility/Include/Tactility/hal/sdcard/SdmmcDevice.h
index e1e50e0d..0fab8a40 100644
--- a/Tactility/Include/Tactility/hal/sdcard/SdmmcDevice.h
+++ b/Tactility/Include/Tactility/hal/sdcard/SdmmcDevice.h
@@ -31,7 +31,8 @@ public:
             gpio_num_t pinD1,
             gpio_num_t pinD2,
             gpio_num_t pinD3,
-            MountBehaviour mountBehaviourAtBoot
+            MountBehaviour mountBehaviourAtBoot,
+            uint8_t busWidth = 4
         ) :
             pinClock(pinClock),
             pinCmd(pinCmd),
@@ -39,7 +40,8 @@ public:
             pinD1(pinD1),
             pinD2(pinD2),
             pinD3(pinD3),
-            mountBehaviourAtBoot(mountBehaviourAtBoot)
+            mountBehaviourAtBoot(mountBehaviourAtBoot),
+            busWidth(busWidth)
         {}
 
         int spiFrequencyKhz;
@@ -50,6 +52,7 @@ public:
         gpio_num_t pinD2;
         gpio_num_t pinD3;
         MountBehaviour mountBehaviourAtBoot;
+        uint8_t busWidth;
         bool formatOnMountFailed = false;
         uint16_t maxOpenFiles = 4;
         uint16_t allocUnitSize = 16 * 1024;
diff --git a/Tactility/Source/hal/sdcard/SdmmcDevice.cpp b/Tactility/Source/hal/sdcard/SdmmcDevice.cpp
index 036ebee2..ae74e6ce 100644
--- a/Tactility/Source/hal/sdcard/SdmmcDevice.cpp
+++ b/Tactility/Source/hal/sdcard/SdmmcDevice.cpp
@@ -41,7 +41,7 @@ bool SdmmcDevice::mountInternal(const std::string& newMountPath) {
         .d7  = static_cast<gpio_num_t>(0),
         .cd  = GPIO_NUM_NC,
         .wp  = GPIO_NUM_NC,
-        .width = 4,
+        .width = config->busWidth,
         .flags = 0
       };
 
@@ -120,4 +120,4 @@ SdmmcDevice::State SdmmcDevice::getState(TickType_t timeout) const {
 
 }
 
-#endif
\ No newline at end of file
+#endif