我正在尝试使用 STM32f407vgt6 的虚拟端口与我的 win 10 电脑进行 通信。我想发送 16 个字节的数据。
我在 cubeMX 中创建了一个基础项目并插入了 cdc_transmit。可以通过虚拟端口将 16 字节的数据发送到我的电脑。我可以在 hterm 中看到传入的数据。
我的问题是,当我添加一些代码行(例如设置一个 ADC)时,无法通过 hterm 或 labview 访问 COM 端口。如果发送缓冲区大于 19 个字节,我会遇到同样的问题。
以下程序不工作。
- /* USER CODE BEGIN Header */
- /**
- ******************************************************************************
- * @file : main.c
- * @brief : Main program body
- ******************************************************************************
- * @attention
- *
- *
© Copyright (c) 2020 STMicroelectronics.- * All rights reserved.
- *
- * This software component is licensed by ST under BSD 3-Clause license,
- * the "License"; You may not use this file except in compliance with the
- * License. You may obtain a copy of the License at:
- * opensource.org/licenses/BSD-3-Clause
- *
- ******************************************************************************
- */
- /* USER CODE END Header */
- /* Includes ------------------------------------------------------------------*/
- #include "main.h"
- #include "adc.h"
- #include "dma.h"
- #include "i2c.h"
- #include "i2s.h"
- #include "spi.h"
- #include "tim.h"
- #include "usb_device.h"
- #include "gpio.h"
- /* Private includes ----------------------------------------------------------*/
- /* USER CODE BEGIN Includes */
- /* USER CODE END Includes */
- /* Private typedef -----------------------------------------------------------*/
- /* USER CODE BEGIN PTD */
- /* USER CODE END PTD */
- /* Private define ------------------------------------------------------------*/
- /* USER CODE BEGIN PD */
- #define TX_BUF_SIZE 16
- #define adcSequenz 8
- /* USER CODE END PD */
- /* Private macro -------------------------------------------------------------*/
- /* USER CODE BEGIN PM */
- /* USER CODE END PM */
- /* Private variables ---------------------------------------------------------*/
- /* USER CODE BEGIN PV */
- uint16_t DeviceAdress= 0x20 << 1;
- volatile uint8_t Tx_Flag;
- uint32_t ms_cnt = 0;
- uint8_t txbuff[TX_BUF_SIZE];
- uint32_t cycCnt = 0;
- uint16_t adc1Data[adcSequenz];
- /* USER CODE END PV */
- /* Private function prototypes -----------------------------------------------*/
- void SystemClock_Config(void);
- /* USER CODE BEGIN PFP */
- extern uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t len);
- /* USER CODE END PFP */
- /* Private user code ---------------------------------------------------------*/
- /* USER CODE BEGIN 0 */
- /**
- * @brief Period elapsed callback in non blocking mode
- * @param htim: TIM handle
- * @retval None
- */
- void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
- {
- uint8_t i;
- for(i=0; i {
- txbuff = cycCnt; // AD Wandler simuliert
- }
- // Start ADC DMA
- if (htim->Instance == htim14.Instance)
- {
- HAL_ADC_Start(&hadc1);
- HAL_ADC_Start_DMA(&hadc1, (uint32_t*) adc1Data, adcSequenz);
- /* Toggle LED */
- //HAL_GPIO_TogglePin(GPIOD, LD4_Pin);
- ms_cnt++;
- if(ms_cnt >= 500)
- {
- Tx_Flag = 1;
- ms_cnt = 0;
- }
- }
- }
- /* USER CODE END 0 */
- /**
- * @brief The application entry point.
- * @retval int
- */
- int main(void)
- {
- /* USER CODE BEGIN 1 */
- /* USER CODE END 1 */
- /* MCU Configuration--------------------------------------------------------*/
- /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
- HAL_Init();
- /* USER CODE BEGIN Init */
- HAL_StatusTypeDef stat = 0;
- uint8_t adcTxBuffer[16];
- uint8_t adcRxBuffer[16];
- uint8_t datatx[2];
- uint8_t datarx[1];
- datarx[0]=0x00;
- /* USER CODE END Init */
- /* Configure the system clock */
- SystemClock_Config();
- /* USER CODE BEGIN SysInit */
- /* USER CODE END SysInit */
- /* Initialize all configured peripherals */
- MX_GPIO_Init();
- MX_DMA_Init();
- MX_I2C1_Init();
- MX_I2S3_Init();
- MX_SPI1_Init();
- MX_USB_DEVICE_Init();
- MX_ADC1_Init();
- MX_TIM14_Init();
- /* USER CODE BEGIN 2 */
- float show[adcSequenz];
- int i = 0;
- //int j = 0;
- adcTxBuffer[0] = 0x00;
- adcTxBuffer[1] = 0xF8;
- stat = HAL_I2C_Mem_Write(&hi2c1, DeviceAdress, 0x02, 2, adcTxBuffer, 2, 100);
- stat = HAL_I2C_Mem_Read(&hi2c1, DeviceAdress, 0x02, 2, adcRxBuffer, 2, 100);
- HAL_Delay(1);
- HAL_GPIO_TogglePin(GPIOA, 1);
- HAL_Delay(1);
- HAL_GPIO_TogglePin(GPIOA, 1);
- //stat = HAL_I2C_Mem_Read(&hi2c1, DeviceAdress, 0x00, 2, adcRxBuffer, 2, 100);
- /* USER CODE END 2 */
- /* Infinite loop */
- /* USER CODE BEGIN WHILE */
- while (1)
- {
- for(i=0; i
- {
- show = (float) adc1Data*(float) 3.3 / (float)0xFFF;
- }
- if(Tx_Flag == 1)
- {
- // for(j = 0; j < 8; j++)
- // {
- // txbuff[2*j+1] = adc1Data[j] & 0x00FF;
- // txbuff[2*j] = (adc1Data[j] & 0xFF00) >> 8;
- // }
- cycCnt++;
- Tx_Flag = 0;
- CDC_Transmit_FS(txbuff, sizeof(txbuff));
- HAL_GPIO_TogglePin(GPIOD, LD4_Pin);
- }
- /* USER CODE END WHILE */
- /* USER CODE BEGIN 3 */
- }
- /* USER CODE END 3 */
- }
- /**
- * @brief System Clock Configuration
- * @retval None
- */
- 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_ON;
- 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_I2S;
- PeriphClkInitStruct.PLLI2S.PLLI2SN = 192;
- PeriphClkInitStruct.PLLI2S.PLLI2SR = 2;
- if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != 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 %drn", file, line) */
- /* USER CODE END 6 */
- }
- #endif /* USE_FULL_ASSERT */
我附上了一个工作示例。所以我不知道错误在哪里。
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