Hi,
I have a GSM modem connected to /dev/ttyS0 and would like to use php
to communicate with the modem. Writing works perfectly like this:
$fp=fopen("/dev/ttyS0","r+");
fwrite($fp,"AT+CMGL\r");
but reading is a little problem because if the modem for example answers
to the "AT+CMGL" message I sent to it with the command above it does NOT
put an EOF at the end of the stream. For example the following code
while (!feof($fp)) {
print=fgetc($fp);
}
blocks after it read the last char and waits for the next char that will
never come. I tried to use filesize() and
fseek ($fp,0,SEEK_END);
print ftell($fp);
to find out the length of the answer of the modem but it didn't work.
Anybody knows a solution? For example a timeout parameter of fread, fgetc?
Or whatever ...
Thanks
Tobias
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Tobias Fritz
[EMAIL PROTECTED]
http://tobias.fritz.net/
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