STM32G0F6P6芯片，同时使能RTC和IWDG，结果运行了之后串口没反应.

2万 · 2023-10-11 09:53

对比了一下，即使能LSI和LSE时钟，估计没有起振；例程只使能了HSI，就可以运行。

使能三个时钟：

void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

/ Configure the main internal regulator output voltage */ HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1); /* Configure LSE Drive Capability / __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW); / Initializes the CPU, AHB and APB busses clocks */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI |RCC_OSCILLATORTYPE_LSE; RCC_OscInitStruct.LSEState = RCC_LSE_ON; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1; RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; RCC_OscInitStruct.LSIState = RCC_LSI_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1; RCC_OscInitStruct.PLL.PLLN = 8; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2; 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_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;

if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) { Error_Handler(); } /* Initializes the peripherals clocks / PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_RTC|RCC_PERIPHCLK_USART1 |RCC_PERIPHCLK_ADC; PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1; PeriphClkInit.AdcClockSelection = RCC_ADCCLKSOURCE_SYSCLK; PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;

if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) { Error_Handler(); } }

/ USER CODE BEGIN 4 /

/ USER CODE END 4 /

/**

@brief This function is executed in case of error occurrence.
@retval None / void Error_Handler(void) { / USER CODE BEGIN Error_Handler_Debug / / User can add his own implementation to report the HAL error return state */

/ USER CODE END Error_Handler_Debug / }

ifdef USE_FULL_ASSERT

/**

@brief Reports the name of the source file and the source line number
where the assert_param error has occurred.
- @param file: pointer to the source file name
- @param line: assert_param error line source number
- @retval None / void assert_failed(uint8_t file, uint32_t line) { / USER CODE BEGIN 6 / / User can add his own implementation to report the file name and line number, tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) / / USER CODE END 6 / }endif / USE_FULL_ASSERT /
  /**** (C) COPYRIGHT STMicroelectronics *END OF FILE/

只看该作者 · 2023-10-11 19:42

晶振原因不起振吗