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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Non-blocking fgets

Hi,

I'm interfacing MAX10 fpga development kit with matlab. The matlab sends command to the .c file which in turns request data from the fpga development kit. I'm able to acquire data continuously but want to do a modification in my code that when matlab send a "STOP" command, the .c file should suspend the data acquisition process from the board. I'm using fgets but as it's a non-blocking function, hence I'm getting stuck in the loop as fgets is waiting for a command. How can I avoid this ? Can anyone please help me resolve this issue ?

Thanks,

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    Perhaps you could think about using the getchar() function instead.

    This way you could manage yourself incomming characters one-by-one.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    Hi,

    Could you please be more elaborate on this ?

    I'm using fcntl(_serialPort, F_SETFL, fcntl(_serialPort, F_GETFL, 0) | O_NONBLOCK); to make the fgets Non-blocking but still it doesn't work.

    Thanks,