# lws minimal raw serial example This demonstrates adopting a file descriptor representing a serial device into the event loop, printing a string on it every couple of seconds and showing any serial that is received. The serial terminal is configured for 115200 8N1. ``` $ ./lws-minimal-raw-serial ``` ## build ``` $ cmake . && make ``` ## usage ``` [2019/12/08 16:30:53:4436] U: LWS minimal raw serial [2019/12/08 16:30:53:5016] E: callback_ntpc: set up system ops for set_clock [2019/12/08 16:30:54:8061] N: callback_ntpc: Unix time: 1575822654 [2019/12/08 16:30:54:8253] N: LWS_CALLBACK_RAW_ADOPT_FILE [2019/12/08 16:30:54:8364] N: callback_ntpc: LWS_CALLBACK_RAW_CLOSE [2019/12/08 16:30:54:8456] N: LWS_CALLBACK_RAW_WRITEABLE_FILE [2019/12/08 16:30:56:8455] N: LWS_CALLBACK_RAW_WRITEABLE_FILE [2019/12/08 16:30:58:8460] N: LWS_CALLBACK_RAW_WRITEABLE_FILE [2019/12/08 16:30:59:1570] N: LWS_CALLBACK_RAW_RX_FILE [2019/12/08 16:30:59:1604] N: [2019/12/08 16:30:59:1641] N: 0000: 62 b [2019/12/08 16:30:59:1644] N: [2019/12/08 16:31:00:8463] N: LWS_CALLBACK_RAW_WRITEABLE_FILE [2019/12/08 16:31:01:6392] N: LWS_CALLBACK_RAW_RX_FILE [2019/12/08 16:31:01:6397] N: [2019/12/08 16:31:01:6407] N: 0000: 65 e [2019/12/08 16:31:01:6411] N: [2019/12/08 16:31:02:8463] N: LWS_CALLBACK_RAW_WRITEABLE_FILE ... . ``` The remote serial connection will show the string sent every 2s.