stm32hal库虚拟串口
时间: 2023-10-11 21:05:08 浏览: 60
对于STM32HAL库的虚拟串口,可以使用HAL库提供的UART模拟功能实现。具体步骤如下:
1. 在CubeMX中配置UART串口,并将其设置为虚拟串口模式。
2. 在初始化函数中调用以下代码,将UART设置为虚拟串口模式:
```c
huart->Init.Mode = UART_MODE_TX_RX;
huart->Init.WordLength = UART_WORDLENGTH_8B;
huart->Init.Parity = UART_PARITY_NONE;
huart->Init.StopBits = UART_STOPBITS_1;
huart->Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart->Init.OverSampling = UART_OVERSAMPLING_16;
huart->AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
huart->AdvancedInit.AutoBaudRateEnable = UART_ADVFEATURE_AUTOBAUDRATE_INIT;
huart->AdvancedInit.AutoBaudRateMode = UART_ADVFEATURE_AUTOBAUDRATE_ONSTARTBIT;
huart->AdvancedInit.AutoBaudRateSamplingTime = 0x0;
huart->AdvancedInit.MSBFirst = UART_ADVFEATURE_MSBFIRST_DISABLE;
huart->AdvancedInit.ClockPrescaler = UART_ADVFEATURE_CLOCKPRESCALER_DIV1;
huart->AdvancedInit.DataInvert = UART_ADVFEATURE_DATAINVERT_INIT;
huart->AdvancedInit.DMADisableonRxError = UART_ADVFEATURE_DMA_DISABLEONRXERROR;
huart->AdvancedInit.TXPinLevelInvert = UART_ADVFEATURE_TXINVERT_INIT;
huart->AdvancedInit.RXPinLevelInvert = UART_ADVFEATURE_RXINVERT_INIT;
huart->AdvancedInit.TXPinSwapping = UART_ADVFEATURE_SWAP_INIT;
huart->AdvancedInit.RXPinSwapping = UART_ADVFEATURE_SWAP_INIT;
huart->AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
huart->AdvancedInit.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart->AdvancedInit.Prescaler = UART_ADVFEATURE_PRESCALER_NO_INIT;
huart->AdvancedInit.FifoMode = UART_FIFOMODE_DISABLE;
```
3. 在主函数中,使用以下代码向虚拟串口发送数据:
```c
char data[] = "Hello, World!";
HAL_UART_Transmit(&huart, data, strlen(data), HAL_MAX_DELAY);
```
4. 可以使用中断或DMA方式接收虚拟串口数据,具体实现方法可以参考HAL库提供的示例代码。
需要注意的是,虚拟串口不支持硬件流控制,如果需要使用流控制功能,可以考虑使用软件实现。
阅读全文