BSP

新版bsp在哪里修改HSE_VALUE比较好？

发布于 2019-05-07 11:38:52 浏览：1900 订阅该版

7 个回答

z14git 2019-05-07

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我夏了夏天 认证专家 2019-05-07

Life isn't about finding yourself, life is about creating yourself.

armink 2019-05-07

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春和景明 2019-05-07

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[quote][size=2][url=forum.php?mod=redirect&goto=findpost&pid=47237&ptid=11160][color=#999999]z14git 发表于 2019-5-7 14:48[/color][/url][/size]
修改 你的BSP目录/board/CubeMX_Config 下的stm32cubemx工程文件，在cubemx中修改改晶振后，重新生成代码， ...[/quote]

谢谢！但是我就是这么弄得啊！但是没有效果。直到我手动修改了HSE_VALUE的定义值。
#define HSE_VALUE    ((uint32_t)8000000U) /*!< Value of the External oscillator in Hz */
stm32 HAL库RCC初始化用得着HSE_VALUE的值吗。但是一下函数中并没有修改HSE_VALUE值的代码啊。
一下是我从main.c中拷贝过来的。。。。麻烦看看，有设置错误吗？
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};

/** Configure the main internal regulator output voltage 
  */
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
  /** Initializes the CPU, AHB and APB busses clocks 
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 8;
  RCC_OscInitStruct.PLL.PLLN = 336;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 7;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** 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_DIV4;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LTDC;
  PeriphClkInitStruct.PLLSAI.PLLSAIN = 144;
  PeriphClkInitStruct.PLLSAI.PLLSAIR = 4;
  PeriphClkInitStruct.PLLSAIDivR = RCC_PLLSAIDIVR_4;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
}