[DISCO_F746NG] Use HSE instead of HSE ByPass

Signed-off-by: Frederic.Pillon <frederic.pillon@st.com>

Author: fpistm

variants/DISCO_F746NG/variant.cpp

@@ -63,7 +63,7 @@ extern "C" {
 
 /**
   * @brief  System Clock Configuration
-  *         The system Clock is configured as follow : 
+  *         The system Clock is configured as follow :
   *            System Clock source            = PLL (HSE)
   *            SYSCLK(Hz)                     = 216000000
   *            HCLK(Hz)                       = 216000000
@@ -89,16 +89,14 @@ WEAK void SystemClock_Config(void)
   RCC_ClkInitTypeDef RCC_ClkInitStruct;
   RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
 
-    /**Configure the main internal regulator output voltage 
-    */
+  /* Configure the main internal regulator output voltage */
   __HAL_RCC_PWR_CLK_ENABLE();
 
   __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
 
-    /**Initializes the CPU, AHB and APB busses clocks 
-    */
+  /* Initializes the CPU, AHB and APB busses clocks */
   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
-  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
   RCC_OscInitStruct.PLL.PLLM = 25;
@@ -107,18 +105,16 @@ WEAK void SystemClock_Config(void)
   RCC_OscInitStruct.PLL.PLLQ = 9;
   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
   {
-    while(1) { ; }
+    _Error_Handler(__FILE__, __LINE__);
   }
 
-    /**Activate the Over-Drive mode 
-    */
+  /* Activate the Over-Drive mode */
   if (HAL_PWREx_EnableOverDrive() != HAL_OK)
   {
-    while(1) { ; }
+    _Error_Handler(__FILE__, __LINE__);
   }
 
-    /**Initializes the CPU, AHB and APB busses clocks 
-    */
+  /* Initializes the CPU, AHB and APB busses clocks */
   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
@@ -128,26 +124,28 @@ WEAK void SystemClock_Config(void)
 
   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK)
   {
-    while(1) { ; }
+    _Error_Handler(__FILE__, __LINE__);
   }
 
   PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LTDC|RCC_PERIPHCLK_USART1
                               |RCC_PERIPHCLK_CLK48;
   PeriphClkInitStruct.PLLSAI.PLLSAIN = 192;
-  PeriphClkInitStruct.PLLSAI.PLLSAIR = 2;
+  PeriphClkInitStruct.PLLSAI.PLLSAIR = 5;
   PeriphClkInitStruct.PLLSAI.PLLSAIQ = 2;
   PeriphClkInitStruct.PLLSAI.PLLSAIP = RCC_PLLSAIP_DIV4;
   PeriphClkInitStruct.PLLSAIDivQ = 1;
-  PeriphClkInitStruct.PLLSAIDivR = RCC_PLLSAIDIVR_2;
+  PeriphClkInitStruct.PLLSAIDivR = RCC_PLLSAIDIVR_4;
   PeriphClkInitStruct.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
   PeriphClkInitStruct.Clk48ClockSelection = RCC_CLK48SOURCE_PLLSAIP;
   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
   {
-    while(1) { ; }
+    _Error_Handler(__FILE__, __LINE__);
   }
 
+  /* Configure the Systick interrupt time */
   HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
 
+  /* Configure the Systick */
   HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
 
   /* SysTick_IRQn interrupt configuration */