diff --git a/variants/STM32G4xx/G473C(B-C-E)U_G474C(B-C-E)U_G483CEU_G484CEU/variant_WEACT_G474CE.cpp b/variants/STM32G4xx/G473C(B-C-E)U_G474C(B-C-E)U_G483CEU_G484CEU/variant_WEACT_G474CE.cpp
index 7f77b7eee5..d48e8a9fb1 100644
--- a/variants/STM32G4xx/G473C(B-C-E)U_G474C(B-C-E)U_G483CEU_G484CEU/variant_WEACT_G474CE.cpp
+++ b/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 */
diff --git a/variants/STM32G4xx/G473C(B-C-E)U_G474C(B-C-E)U_G483CEU_G484CEU/variant_WEACT_G474CE.h b/variants/STM32G4xx/G473C(B-C-E)U_G474C(B-C-E)U_G483CEU_G484CEU/variant_WEACT_G474CE.h
index 2d66c2ab32..785cc5eaf1 100644
--- a/variants/STM32G4xx/G473C(B-C-E)U_G474C(B-C-E)U_G483CEU_G484CEU/variant_WEACT_G474CE.h
+++ b/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
*----------------------------------------------------------------------------*/
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