Introduction - If you have any usage issues, please Google them yourself
The serial port software than the spread of the Internet some serial debugging software use a lot of data transceiver, receiving the data, if the last character is'\r'or'\n', will be in a certain period of time waiting to receive all the'\r','\n' characters, to avoid the two line read'\r\n'may cause the three already; the situation mentioned, as well as the use of'\r\n\r' three characters as a newline character to use, has increased support.