[Disco-L475VG] Fix SystemClock_Config

PLLM to 6 is not possible with PLLN set to 40.
Fix USB clock to have 48MHz instead of MSI one

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

Author: fpistm

variants/DISCO_L475VG_IOT/variant.cpp

@@ -173,17 +173,17 @@ WEAK void SystemClock_Config(void)
   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
   RCC_OscInitStruct.MSIState = RCC_MSI_ON;
   RCC_OscInitStruct.MSICalibrationValue = 0;
-  RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_11;
+  RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
-  RCC_OscInitStruct.PLL.PLLM            = 6;
+  RCC_OscInitStruct.PLL.PLLM            = 1;
   RCC_OscInitStruct.PLL.PLLN            = 40;
   RCC_OscInitStruct.PLL.PLLP            = 7;
-  RCC_OscInitStruct.PLL.PLLQ            = 4;
-  RCC_OscInitStruct.PLL.PLLR            = 4;
+  RCC_OscInitStruct.PLL.PLLQ            = 2;
+  RCC_OscInitStruct.PLL.PLLR            = 2;
   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
   {
-    while(1);
+    Error_Handler();
   }
 
   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
@@ -195,29 +195,42 @@ WEAK void SystemClock_Config(void)
 
   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
   {
-    while(1);
+    Error_Handler();
   }
 
-  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2|RCC_PERIPHCLK_UART4
-                              |RCC_PERIPHCLK_I2C1|RCC_PERIPHCLK_I2C2
+  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_USART2
+                              |RCC_PERIPHCLK_USART3|RCC_PERIPHCLK_UART4
+                              |RCC_PERIPHCLK_UART5|RCC_PERIPHCLK_I2C1
+                              |RCC_PERIPHCLK_I2C2|RCC_PERIPHCLK_DFSDM1
                               |RCC_PERIPHCLK_USB|RCC_PERIPHCLK_ADC;
+  PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
   PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
+  PeriphClkInit.Usart3ClockSelection = RCC_USART3CLKSOURCE_PCLK1;
   PeriphClkInit.Uart4ClockSelection = RCC_UART4CLKSOURCE_PCLK1;
+  PeriphClkInit.Uart5ClockSelection = RCC_UART5CLKSOURCE_PCLK1;
   PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_PCLK1;
   PeriphClkInit.I2c2ClockSelection = RCC_I2C2CLKSOURCE_PCLK1;
   PeriphClkInit.AdcClockSelection = RCC_ADCCLKSOURCE_SYSCLK;
-  PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_MSI;
+  PeriphClkInit.Dfsdm1ClockSelection = RCC_DFSDM1CLKSOURCE_PCLK;
+  PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLLSAI1;
+  PeriphClkInit.PLLSAI1.PLLSAI1Source = RCC_PLLSOURCE_MSI;
+  PeriphClkInit.PLLSAI1.PLLSAI1M = 1;
+  PeriphClkInit.PLLSAI1.PLLSAI1N = 24;
+  PeriphClkInit.PLLSAI1.PLLSAI1P = RCC_PLLP_DIV7;
+  PeriphClkInit.PLLSAI1.PLLSAI1Q = RCC_PLLQ_DIV2;
+  PeriphClkInit.PLLSAI1.PLLSAI1R = RCC_PLLR_DIV2;
+  PeriphClkInit.PLLSAI1.PLLSAI1ClockOut = RCC_PLLSAI1_48M2CLK;
 
   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
   {
-    while(1);
+    Error_Handler();
   }
 
     /**Configure the main internal regulator output voltage
     */
   if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
   {
-    while(1);
+    Error_Handler();
   }
 
   /**Configure the Systick interrupt time