[NUCLEO-F767ZI]Update SystemClock_Config

Author: davidangerls

variants/NUCLEO_F767ZI/variant.cpp

@@ -164,17 +164,17 @@ WEAK void SystemClock_Config(void)
   /* Configure the main internal regulator output voltage */
   __HAL_RCC_PWR_CLK_ENABLE();
 
-  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);
 
   /* Initializes the CPU, AHB and APB busses clocks */
   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
-  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
-  RCC_OscInitStruct.PLL.PLLM = 25;
-  RCC_OscInitStruct.PLL.PLLN = 432;
+  RCC_OscInitStruct.PLL.PLLM = 4;
+  RCC_OscInitStruct.PLL.PLLN = 96;
   RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
-  RCC_OscInitStruct.PLL.PLLQ = 9;
+  RCC_OscInitStruct.PLL.PLLQ = 4;
   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
   {
     _Error_Handler(__FILE__, __LINE__);
@@ -191,24 +191,17 @@ WEAK void SystemClock_Config(void)
                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
-  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
-  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
 
-  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK)
+  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK)
   {
     _Error_Handler(__FILE__, __LINE__);
   }
 
-  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LTDC|RCC_PERIPHCLK_USART1
-                              |RCC_PERIPHCLK_CLK48;
-  PeriphClkInitStruct.PLLSAI.PLLSAIN = 192;
-  PeriphClkInitStruct.PLLSAI.PLLSAIR = 5;
-  PeriphClkInitStruct.PLLSAI.PLLSAIQ = 2;
-  PeriphClkInitStruct.PLLSAI.PLLSAIP = RCC_PLLSAIP_DIV4;
-  PeriphClkInitStruct.PLLSAIDivQ = 1;
-  PeriphClkInitStruct.PLLSAIDivR = RCC_PLLSAIDIVR_4;
-  PeriphClkInitStruct.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
-  PeriphClkInitStruct.Clk48ClockSelection = RCC_CLK48SOURCE_PLLSAIP;
+  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USART3|RCC_PERIPHCLK_CLK48;
+  PeriphClkInitStruct.Usart3ClockSelection = RCC_USART3CLKSOURCE_PCLK1;
+  PeriphClkInitStruct.Clk48ClockSelection = RCC_CLK48SOURCE_PLL;
   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
   {
     _Error_Handler(__FILE__, __LINE__);