STM32F1的UART
时间: 2024-06-07 16:08:49 浏览: 9
STM32F1系列的UART是一种串行通信接口,可以用于与其他设备进行数据传输。它支持多种数据格式和波特率,并且可以实现中断和DMA传输。使用UART需要配置GPIO引脚作为UART的TX和RX引脚,并通过软件初始化UART模块的参数,例如波特率、数据位、停止位、校验位等。在数据传输时,可以使用UART的发送和接收函数来发送和接收数据。
相关问题
stm32f1 uart4
UART4 is a peripheral device available on STM32F1 microcontrollers. It is a universal asynchronous receiver/transmitter that allows serial communication with other devices, such as sensors, displays, or other microcontrollers.
The UART4 peripheral on STM32F1 microcontrollers has the following features:
- Full-duplex communication (simultaneous transmission and reception)
- Programmable baud rate generator (up to 10 Mbit/s)
- 8-bit or 9-bit data format
- Parity bit generation and detection (even, odd, or no parity)
- Interrupt generation on receive and/or transmit complete, errors, or idle line detection.
To use UART4 on STM32F1 microcontrollers, the following steps are typically required:
1. Configure the GPIO pins for UART4 Tx and Rx.
2. Enable the clock for UART4.
3. Configure the UART4 registers for the desired communication parameters, such as baud rate, data format, and parity.
4. Enable the UART4 interrupt (if desired) and set up the interrupt service routine.
5. Start the UART4 communication by writing data to the Tx register and/or reading data from the Rx register.
Note that the specific steps required may vary depending on the application and the desired communication protocol. It is also important to consult the STM32F1 reference manual for more detailed information on the UART4 peripheral and its registers.
STM32F1 HAL DMA UART
STM32F1 HAL DMA UART是指在STM32F1系列微控制器上使用HAL库函数和DMA来实现UART串口通信。引用\[1\]中的代码片段展示了如何配置DMA和UART句柄以实现DMA传输数据到UART。首先,需要使能DMA时钟并配置DMA句柄。然后,通过HAL_DMA_Init函数初始化DMA句柄,并通过__HAL_LINKDMA函数将DMA句柄与UART句柄连接起来。这样,在执行UART传输函数之后,DMA将会自动将数据从内存传输到UART外设。引用\[2\]提供了关于UART串口通信过采样数据和利用DMA实现不定长数据接收的更多详细信息。引用\[3\]中的描述说明了在DMA传输完成后,UART状态会从"tx busy"变为"ready"。
#### 引用[.reference_title]
- *1* [【STM32】HAL库 SPI DMA UART驱动开发](https://blog.csdn.net/zDavid_2018/article/details/107988636)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* *3* [【stm32HAL库】uart dma收发驱动(含实例)](https://blog.csdn.net/qq_24629659/article/details/129473515)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
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