fix(fw): enable SYSCFG clock before using EXTI (#5020)

EdgeTX · May 25, 2024 · b8a0038 · b8a0038
1 parent 390c71c
commit b8a0038
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/radio/src/targets/common/arm/stm32/rotary_encoder_driver.cpp b/radio/src/targets/common/arm/stm32/rotary_encoder_driver.cpp
@@ -162,6 +162,14 @@ void rotaryEncoderInit()
   ROTARY_ENCODER_TIMER->CR1 = 0;
   ROTARY_ENCODER_TIMER->DIER |= TIM_DIER_UIE;
 
+#if defined(LL_APB4_GRP1_PERIPH_SYSCFG)
+  LL_APB4_GRP1_EnableClock(LL_APB4_GRP1_PERIPH_SYSCFG);
+#elif defined(LL_APB2_GRP1_PERIPH_SYSCFG)
+  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SYSCFG);
+#else
+  #error "Unsupported SYSCFG clock"
+#endif
+
   LL_SYSCFG_SetEXTISource(ROTARY_ENCODER_EXTI_PORT, ROTARY_ENCODER_EXTI_SYS_LINE1);
   LL_SYSCFG_SetEXTISource(ROTARY_ENCODER_EXTI_PORT, ROTARY_ENCODER_EXTI_SYS_LINE2);