用STM32F103 (Arduino)从内部振荡器运行PlatformIO？
用STM32F103 (Arduino)从内部振荡器运行PlatformIO？
提问于 2020-11-02 13:59:56
如何将STM32F103C8配置为与内部RC振荡器/ HSI & PLL一起运行，即没有外部晶体振荡器(如存在于“蓝色药丸”板上)和PlatformIO中的Arduino框架？
- https://docs.platformio.org/en/latest/boards/ststm32/bluepill_f103c8.html
- https://docs.platformio.org/en/latest/boards/ststm32/genericSTM32F103C8.html
- https://docs.platformio.org/en/latest/frameworks/arduino.html
platformio.ini：
[env:bluepill_f103c8]
platform = ststm32
board = bluepill_f103c8
#board = genericSTM32F103C8
#board_build.mcu = stm32f103c8t6
#board_build.f_cpu = 72000000L
framework = arduino
lib_deps = olikraus/U8g2 @ ^2.28.7
upload_protocol = stlink回答 1
Stack Overflow用户
回答已采纳
发布于 2020-11-02 18:44:30
我在PlatformIO目录中搜索了一下。
以下路径用于“泛型”：
C:\Users\<user>\.platformio\platforms\ststm32\boards\genericSTM32F103C8.jsonC:\Users\<user>\.platformio\packages\framework-arduinoststm32\variants\Generic_F103Cx\variant.cpp
在例如main.cpp中定义您自己的系统时钟配置
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);
}
}因此，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。
我还没有核实实际的时钟速度。
它应该运行在36 MHz (8兆赫/2*9)。ini则需要board\_build.f\_cpu = 36000000L。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/64646976
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