pi@raspberrypi:~ $ telnet 127.0.0.1 2947
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
{"class":"VERSION","release":"3.17","rev":"3.17","proto_major":3,"proto_minor":12}
?WATCH={"enable":true,"json":true}
{"class":"DEVICES","devices":[{"class":"DEVICE","path":"/dev/ttyUSB1","driver":"MTK-3301","subtype":"AXN_2.31_3339_13101700-5632","activated":"2020-12-11T12:18:02.791Z","flags":1,"native":0,"bps":9600,"parity":"N","stopbits":1,"cycle":1.00,"mincycle":0.20}]}
{"class":"WATCH","enable":true,"json":true,"nmea":false,"raw":0,"scaled":false,"timing":false,"split24":false,"pps":false}
{"class":"TPV","device":"/dev/ttyUSB1","mode":1,"time":"2020-12-11T12:33:17.086Z","ept":0.005}
{"class":"TPV","device":"/dev/ttyUSB1","mode":1,"time":"2020-12-11T12:33:18.086Z","ept":0.005}
{"class":"TPV","device":"/dev/ttyUSB1","mode":1,"time":"2020-12-11T12:33:19.086Z","ept":0.005}
{"class":"TPV","device":"/dev/ttyUSB1","mode":1,"time":"2020-12-11T12:33:20.086Z","ept":0.005}
{"class":"TPV","device":"/dev/ttyUSB1","mode":1,"time":"2020-12-11T12:33:21.086Z","ept":0.005}
{"class":"TPV","device":"/dev/ttyUSB1","mode":1,"time":"2020-12-11T12:33:22.086Z","ept":0.005}
{"class":"TPV","device":"/dev/ttyUSB1","mode":1,"time":"2020-12-11T12:33:23.086Z","ept":0.005}