Merge pull request #2619 from ALTracer/fix/variant_WEACT_G474CE

variant(g4): Fix clock config of WeAct STM32G474CoreBoard

Author: fpistm

variants/STM32G4xx/G473C(B-C-E)U_G474C(B-C-E)U_G483CEU_G484CEU/variant_WEACT_G474CE.cpp

@@ -98,6 +98,7 @@ WEAK void SystemClock_Config(void)
   RCC_OscInitTypeDef RCC_OscInitStruct = {};
   RCC_ClkInitTypeDef RCC_ClkInitStruct = {};
 #ifdef USBCON
+  RCC_CRSInitTypeDef RCC_CRSInitStruct = {};
   RCC_PeriphCLKInitTypeDef PeriphClkInit = {};
 #endif
 
@@ -111,7 +112,7 @@ WEAK void SystemClock_Config(void)
   RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
   RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
-  RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV4;
+  RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV2;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
   RCC_OscInitStruct.PLL.PLLN = 85;
   RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
@@ -133,6 +134,19 @@ WEAK void SystemClock_Config(void)
   }
 
 #ifdef USBCON
+  /* Enable the SYSCFG APB clock */
+  __HAL_RCC_CRS_CLK_ENABLE();
+
+  /* Configures CRS */
+  RCC_CRSInitStruct.Prescaler = RCC_CRS_SYNC_DIV1;
+  RCC_CRSInitStruct.Source = RCC_CRS_SYNC_SOURCE_USB;
+  RCC_CRSInitStruct.Polarity = RCC_CRS_SYNC_POLARITY_RISING;
+  RCC_CRSInitStruct.ReloadValue = __HAL_RCC_CRS_RELOADVALUE_CALCULATE(48000000, 1000);
+  RCC_CRSInitStruct.ErrorLimitValue = RCC_CRS_ERRORLIMIT_DEFAULT;
+  RCC_CRSInitStruct.HSI48CalibrationValue = RCC_CRS_HSI48CALIBRATION_DEFAULT;
+
+  HAL_RCCEx_CRSConfig(&RCC_CRSInitStruct);
+
   /* Initializes the peripherals clocks */
   PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
   PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
@@ -146,4 +160,4 @@ WEAK void SystemClock_Config(void)
 } // extern "C"
 #endif
 
-#endif /* ARDUINO_NUCLEO_G431RB */
+#endif /* ARDUINO_WEACT_G474CE */

variants/STM32G4xx/G473C(B-C-E)U_G474C(B-C-E)U_G483CEU_G484CEU/variant_WEACT_G474CE.h

@@ -184,6 +184,10 @@
   #define HAL_QSPI_MODULE_ENABLED
 #endif
 
+#ifndef HSE_VALUE
+  #define HSE_VALUE 8000000U
+#endif
+
 /*----------------------------------------------------------------------------
  *        Arduino objects - C++ only
  *----------------------------------------------------------------------------*/