使用PlatformIOArduino从内部振荡器运行STM32F103吗？

编程问答 2022-06-05

问题描述

STM32F103C8如何配置为与内部RC振荡器/ HSI和PLL一起运行，即在PlatformIO中没有带有Arduino框架的外部晶体振荡器（如“蓝色药丸”板上所示）？

platformio.ini：

#---------------------------------------------------------------------------------------------------
#Array   

Save.array   <- array(data = 0,dim= c(23,33935,16),dimnames = list(row.names,column.names,matrix.names))
column.names     <- seq(1:33935)
row.names        <- seq(1:23)
matrix.names     <- c(components.vek)         #Components are: O3,CO,Temperature,... 
list.components  <- as.list(components11.vek) 



#---------------------------------------------------------------------------------------------------
# Loop 
i <- 1
j <- 1
k <- 1

for (i in c(components.vek)) {
  for (j in c(Save.array)) {
    Speicher.array <- assign(paste0(i,".subset"),subset(mytable,component == i))
    
  if Speicher.array[i,j,k] <- i == 33935
  i+1
     } 
}

解决方法

我在PlatformIO目录中进行了一些挖掘。

以下路径适用于“通用”：

  • C:\Users\<user>\.platformio\platforms\ststm32\boards\genericSTM32F103C8.json
  • C:\Users\<user>\.platformio\packages\framework-arduinoststm32\variants\Generic_F103Cx\variant.cpp

定义您自己的系统时钟配置，例如您的main.cpp：

void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct;
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
  RCC_PeriphCLKInitTypeDef PeriphClkInit;

  /* Initializes the CPU,AHB and APB busses clocks */
  // RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  // RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  // RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  // RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
    while (1);
  }

  /* 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;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct,FLASH_LATENCY_2) != HAL_OK) {
    while (1);
  }

  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC ;
  PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV6;
  PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) {
    while (1);
  }
}

那么ini是：

[env:bluepill_f103c8]
platform = ststm32
board = genericSTM32F103C8
framework = arduino
upload_protocol = stlink
lib_deps = olikraus/U8g2 @ ^2.28.7

我建议重命名env以避免混淆。

我尚未验证实际时钟速度。

它应该以36 MHz（8 MHz / 2 * 9）运行。那么ini需要`board_build.f_cpu = 36000000L`
arduinoarduinoplatformiostm32stm32