Merge pull request #12099 from J91Olivier/stm32f4_baud_rate_calculation_fix

Implemented recommended fix from https://github.com/STMicroelectronic…

Author: adbridge

targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_uart.c

@@ -2432,6 +2432,7 @@ static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
 static void UART_SetConfig(UART_HandleTypeDef *huart)
 {
   uint32_t tmpreg = 0x00U;
+  uint32_t pclk;
 
   /* Check the parameters */
   assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
@@ -2484,39 +2485,58 @@ static void UART_SetConfig(UART_HandleTypeDef *huart)
   if(huart->Init.OverSampling == UART_OVERSAMPLING_8)
   {
     /*-------------------------- USART BRR Configuration ---------------------*/
-#if defined(USART6) 
-    if((huart->Instance == USART1) || (huart->Instance == USART6))
+#if defined(USART6) && defined(UART9) && defined(UART10)
+    if ((huart->Instance == USART1) || (huart->Instance == USART6) || (huart->Instance == UART9) || (huart->Instance == UART10))
     {
-      huart->Instance->BRR = UART_BRR_SAMPLING8(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate);
+      pclk = HAL_RCC_GetPCLK2Freq();
+      huart->Instance->BRR = UART_BRR_SAMPLING8(pclk, huart->Init.BaudRate);
+    }
+#elif defined(USART6)
+    if ((huart->Instance == USART1) || (huart->Instance == USART6))
+    {
+      pclk = HAL_RCC_GetPCLK2Freq();
+      huart->Instance->BRR = UART_BRR_SAMPLING8(pclk, huart->Init.BaudRate);
     }
 #else
-    if(huart->Instance == USART1)
+    if (huart->Instance == USART1)
     {
-      huart->Instance->BRR = UART_BRR_SAMPLING8(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate);
-    }	
+      pclk = HAL_RCC_GetPCLK2Freq();
+      huart->Instance->BRR = UART_BRR_SAMPLING8(pclk, huart->Init.BaudRate);
+    }
 #endif /* USART6 */
     else
     {
-      huart->Instance->BRR = UART_BRR_SAMPLING8(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate);
+      pclk = HAL_RCC_GetPCLK1Freq();
+      huart->Instance->BRR = UART_BRR_SAMPLING8(pclk, huart->Init.BaudRate);
     }
   }
   else
   {
     /*-------------------------- USART BRR Configuration ---------------------*/
-#if defined(USART6) 
-    if((huart->Instance == USART1) || (huart->Instance == USART6))
+#if defined(USART6) && defined(UART9) && defined(UART10)
+	
+    if ((huart->Instance == USART1) || (huart->Instance == USART6) || (huart->Instance == UART9) || (huart->Instance == UART10))
     {
-      huart->Instance->BRR = UART_BRR_SAMPLING16(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate);
+      pclk = HAL_RCC_GetPCLK2Freq();
+      huart->Instance->BRR = UART_BRR_SAMPLING16(pclk, huart->Init.BaudRate);
+    }
+#elif defined(USART6)
+    if ((huart->Instance == USART1) || (huart->Instance == USART6))
+    {
+      pclk = HAL_RCC_GetPCLK2Freq();
+      huart->Instance->BRR = UART_BRR_SAMPLING16(pclk, huart->Init.BaudRate);
     }
 #else
-    if(huart->Instance == USART1)
+    if (huart->Instance == USART1)
     {
-      huart->Instance->BRR = UART_BRR_SAMPLING16(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate);
-    }	
+      pclk = HAL_RCC_GetPCLK2Freq();
+      huart->Instance->BRR = UART_BRR_SAMPLING16(pclk, huart->Init.BaudRate);
+    }
 #endif /* USART6 */
     else
     {
-      huart->Instance->BRR = UART_BRR_SAMPLING16(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate);
+      pclk = HAL_RCC_GetPCLK1Freq();
+      huart->Instance->BRR = UART_BRR_SAMPLING16(pclk, huart->Init.BaudRate);
     }
   }
 }