Added system clock config

Author: outlandnish

variants/STM32F4xx/F413V(G-H)T_F423VHT/generic_clock.c

@@ -21,8 +21,49 @@
   */
 WEAK void SystemClock_Config(void)
 {
-  /* SystemClock_Config can be generated by STM32CubeMX */
-#warning "SystemClock_Config() is empty. Default clock at reset is used."
+  RCC_OscInitTypeDef RCC_OscInitStruct = {};
+  RCC_ClkInitTypeDef RCC_ClkInitStruct = {};
+
+  // Configure the main internal regulator output voltage
+  __HAL_RCC_PWR_CLK_ENABLE();
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
+
+  // Initialize the RCC Oscillators according to the specified parameters
+  // Using HSI (16 MHz internal oscillator)
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
+  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
+
+  // PLL Configuration for 96 MHz system clock and 48 MHz USB clock
+  // HSI = 16 MHz
+  // VCO = (16 MHz / PLLM) * PLLN = (16 / 8) * 192 = 384 MHz
+  // SYSCLK = VCO / PLLP = 384 / 4 = 96 MHz
+  // USB Clock = VCO / PLLQ = 384 / 8 = 48 MHz (required for USB)
+  RCC_OscInitStruct.PLL.PLLM = 8;
+  RCC_OscInitStruct.PLL.PLLN = 192;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
+  RCC_OscInitStruct.PLL.PLLQ = 8;
+  RCC_OscInitStruct.PLL.PLLR = 2;
+
+  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
+  {
+    Error_Handler();
+  }
+
+  // Initialize the CPU, AHB and APB buses clocks
+  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK
+                              | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;   // 96 MHz
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;    // 48 MHz (max 50 MHz)
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;    // 96 MHz (max 100 MHz)
+
+  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK)
+  {
+    Error_Handler();
+  }
 }
 
 #endif /* ARDUINO_GENERIC_* */