Simple interrupt mode UART driver for STM32 with an Unix-like send/receive interface using FreeRTOS queues.
For this purpose, the libary implements HAL interrupt callbacks HAL_UART_RxCpltCallback(), HAL_UART_TxCpltCallback() and HAL_UART_ErrorCallback()
- Configure the driver with configuration defines in UARTdriver.h: MAX_UART_HANDLE, SERIAL_RX_BUFF_LEN and SERIAL_TX_BUFF_LEN.
- Initialize the driver at startup with initDriver_UART().
- Add UART devices to the driver with addDriver_UART() by passing the huartHandle UART handle structure pointer, the irq interrupt number corresponding to the specific UART and the policyRX RX policy, RX policy determines if newer (keep_old) or older (keep_new) bytes are discarded in case of full RX queue.
- Send or read bytes to/from the uart by using the interface functions sendDriver_UART() and receiveDriver_UART(), just as you would do with Unix write() and read(). The image below shows the data flow of bytes from the interface functions to the device:
- If needed, you can flush TX and RX queues with flushTXDriver_UART() and flushRXDriver_UART().
