stm32RCT6usb串口通信代码
时间: 2023-09-28 17:09:27 浏览: 41
以下是一个基于STM32F4系列的USB串口通信代码示例:
```c
#include "stm32f4xx_hal.h"
#include "usbd_cdc_if.h"
/* USB Device Core handle declaration */
USBD_HandleTypeDef hUsbDeviceFS;
/* Function prototypes */
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USB_DEVICE_Init(void);
int main(void)
{
/* MCU Configuration */
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_USB_DEVICE_Init();
/* Infinite loop */
while (1)
{
// 接收数据
uint8_t rxData;
if (CDC_Receive_FS(&rxData, 1) == USBD_OK)
{
// 处理接收到的数据
// ...
}
// 发送数据
uint8_t txData = 'A';
CDC_Transmit_FS(&txData, 1);
HAL_Delay(1000);
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {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_HSI; RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
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_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
Error_Handler();
}
}
static void MX_USB_DEVICE_Init(void)
{
/* Init Device Library, add supported class and start the library. */
USBD_Init(&hUsbDeviceFS, &FS_Desc, DEVICE_FS);
USBD_RegisterClass(&hUsbDeviceFS, &USBD_CDC);
USBD_CDC_RegisterInterface(&hUsbDeviceFS, &USBD_Interface_fops_FS);
USBD_Start(&hUsbDeviceFS);
}
static void MX_GPIO_Init(void)
{
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOA_CLK_ENABLE();
}
```
这里使用了STM32Cube库来实现USB串口通信功能。需要在STM32CubeMX中配置USB Device以及相应的引脚映射,然后生成代码并导入到工程中。
请注意,该代码只提供了一个基本的框架,你还需要根据具体需求进行数据的处理和功能的扩展。同时,确保你已经正确安装了HAL库和USB Device库。