Dears；
When we were testing UART serial port reception, we found a problem of data loss during stress testing.
At present, there are two ways for our serial port to receive data, with an indefinite length. The testing method is for the computer to send 20 bytes to the serial port every 10ms, with a serial port baud rate of 230400. Both DMA and interrupt methods have this issue.
Serial port receiving method one:
Get received data in the UartCallback callback
This method does not have data loss issues, but because each byte is called once, it consumes a lot of system resources.
Serial port receiving method 2:
Use the Uart_GetStatus interface to query the received data. If there is received data, retrieve it.
This method takes up less resources, but due to the use of polling, if there happens to be serial data input during data retrieval, it can easily lead to data loss issues
Due to the high resource consumption of method one, we hope to use method two. For the polling in method two, using the Uart_GetStatus interface to obtain received data may have a probability of data loss.Please analyze how to solve this problem.
Thank you!
