[b][red]This message was edited by Jia at 2005-3-15 8:33:3[/red][/b][hr]
Our C program control a device (connecting to RS232 port). We have Serial Port Monitor echo everything sent by the program.
In program, string 'SSS100' is sent to device consistently, but after a period time, no more 'SSS100' shows but 'less and equal' (one character, HEX F3) appears repeatly afterward. We don't know where '<='(F3) comes from and what do they mean.
What the problem seems to be? HW? SW?