On Friday 02 September 2005 6:23 am, Francois Maletras wrote:
The c code is a simple user program with canonical reads in a for loop. Looking at console tty10 during an upload from device to computer, you get ttyS0: 1 input overrun(s) ttyS0: 2 input overrun(s) ttyS0: 1 input overrun(s)
In average, you get 3~4 overruns per upload, but it can drop to 1 or 0. One of the things you really need to do is to get a serial port analyzer. I have not used one in years, but the ones we used were breakout boxes. Not only do these have the capability to change pins, bit they also have leds. You really want to see if the hardware flow control is actually working or not. I have not done any serial port programming in a number of years, but you can really pull your hair out trying to debug this stuff. -- Jerry Feldman <gaf@blu.org> Boston Linux and Unix user group http://www.blu.org PGP key id:C5061EA9 PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9