Libserial, read serial port
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Thread: Libserial, read serial port

  1. #1
    Join Date
    Apr 2014

    Libserial, read serial port

    I am using libserial library to interact with a modem using c++. The C++ code sends an AT command:

    my_serial_stream << "AT+CSQ" << '\r' ;
    The modem responds with a response, either ERROR or OK,

    The c++ code to read the response:

    while( serial_port.rdbuf()->in_avail() > 0 )
        char next_byte;
        std::cerr << std::hex << (int)next_byte << " ";
    std::cerr << std::endl;
    i would like to handle the response such that if the response is OK, the modem sends another command and if the response is ERROR, the modem resends the first command.

  2. #2
    VictorN's Avatar
    VictorN is offline Super Moderator Power Poster
    Join Date
    Jan 2003
    Wallisellen (ZH), Switzerland

    Re: Libserial, read serial port

    Use std::string variable to accumulate the text received from modem and see if it contains "OK" or "ERROR"...
    Victor Nijegorodov

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