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gsm-modem's Introduction

gsm-modem is a telemetry modem VIA SIM800 GSM module.

based on idea in http://diydrones.com/group/telemetry-over-cellular-ip/forum/topics/adding-gprs-telemetry-to-walkera-x350-pro

differences:

  • it uses small Arduino Nano instead of huge and heavy Arduino Mega
  • much more robust initialization and response parsing for GSM module
  • it never hangs forever
  • Config tool to set parameters - address, port, APN
  • auto-baudrate on FC side
  • it parses stream from FC so knows what happens
  • it connect to server only after receiving of valid MAVlink packet so it not eats money in debugging

Server-side:

mkfifo /tmp/proxypipe stdbuf -i0 -o0 -e0 nc -ukl 8888 0</tmp/proxypipe | nc -ulk 7777 1> /tmp/proxypipe &

when modem connected to 8888, MP can connect to 7777 and listen all data from UAV

RUSSIAN

gsm-modem это телеметрический модем через GSM-модуль SIM800

основанный на идее в http://diydrones.com/group/telemetry-over-cellular-ip/forum/topics/adding-gprs-telemetry-to-walkera-x350-pro

различия:

  • используется крошечная Arduino Nano вместо огромной и тяжелой Arduino Mega
  • гораздо более надежная инициализация и разбор ответа для модуля GSM
  • никогда не виснетт навсегда
  • конфигуратор для установки параметров - адрес, порт, APN
  • автоматическое определение скорости порта полетного контроллера
  • Он разбирает поток телеметрии из контроллера, так что знает, что происходит
  • подключается к серверу только после получения достоверного пакета MAVlink, поэтому не ест деньги при отладке

На стороне сервера:

mkfifo /tmp/proxypipe stdbuf -i0 -o0 -e0 nc -ukl 8888 0</tmp/proxypipe | nc -ulk 7777 1> /tmp/proxypipe &

когда модем подключен к 8888, MP может подключаться к 7777 и прослушивать все данные БПЛА

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