program reads from serial port fine out of car, not in car | Programming

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#287207 - 27/09/2006 17:31 Re: program reads from serial port fine out of car, not in car [Re: wfaulk]
jag new poster Registered: 14/02/2002 Posts: 21	Hi all, The RTS and CTS shouldn't matter as only the RX, TX and ground are connected to the wideband serial connector. I just got back from testing it with the empeg connected to an AC power supply (out of the sled) using the connector on the back of the unit. I totally expected it to work but it didn't. So, the problem seems to have to do with the installation of the wideband in the car. When I tested it out of the car I was using a small battery to power the wideband and a wall wart to power the empeg. Now the wideband is using the car battery. I'm not sure what the difference is. The wideband is communicating with my laptop fine, just not with the empeg either in the sled or out. I am going to connect an ethernet cable to the empeg and put some debugging code in the program and see if it is seeing any input over the serial port. I guess I could also just try cat /dev/ttyS1 to see if anything is coming in over the port... Edited by jag (28/09/2006 00:11)
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Subject	Posted by	Posted
program reads from serial port fine out of car, not in car	jag	27/09/2006 01:09
Re: program reads from serial port fine out of car, not in car	wfaulk	27/09/2006 02:59
Re: program reads from serial port fine out of car, not in car	Roger	27/09/2006 06:51
Re: program reads from serial port fine out of car, not in car	jag	27/09/2006 11:37
Re: program reads from serial port fine out of car, not in car	wfaulk	27/09/2006 13:15
Re: program reads from serial port fine out of car, not in car	sein	27/09/2006 14:05
Re: program reads from serial port fine out of car, not in car	tfabris	27/09/2006 14:48
Re: program reads from serial port fine out of car, not in car	jag	27/09/2006 14:54
Re: program reads from serial port fine out of car, not in car	tfabris	27/09/2006 15:17
Re: program reads from serial port fine out of car, not in car	jag	27/09/2006 15:14
Re: program reads from serial port fine out of car, not in car	wfaulk	27/09/2006 16:16
Re: program reads from serial port fine out of car, not in car	jag	27/09/2006 17:31
Re: program reads from serial port fine out of car, not in car	wfaulk	27/09/2006 19:13
Re: program reads from serial port fine out of car, not in car	tfabris	27/09/2006 20:30
Re: program reads from serial port fine out of car, not in car	wfaulk	27/09/2006 20:54
Re: program reads from serial port fine out of car, not in car	tfabris	27/09/2006 21:56
Re: program reads from serial port fine out of car, not in car	wfaulk	27/09/2006 22:58
Re: program reads from serial port fine out of car, not in car	tfabris	28/09/2006 00:00
Re: program reads from serial port fine out of car, not in car	jag	28/09/2006 00:15
Re: program reads from serial port fine out of car, not in car	jag	28/09/2006 00:58
Re: program reads from serial port fine out of car, not in car	tfabris	28/09/2006 01:11
Re: program reads from serial port fine out of car, not in car	wfaulk	28/09/2006 01:45
Re: program reads from serial port fine out of car, not in car	tfabris	28/09/2006 03:50
Re: program reads from serial port fine out of car, not in car	wfaulk	28/09/2006 09:45
Re: program reads from serial port fine out of car, not in car	tfabris	28/09/2006 17:03
Re: program reads from serial port fine out of car, not in car	mlord	28/09/2006 05:59
Re: program reads from serial port fine out of car, not in car	Shonky	28/09/2006 06:49
Re: program reads from serial port fine out of car, not in car	wfaulk	28/09/2006 09:47
Re: program reads from serial port fine out of car, not in car	tfabris	28/09/2006 17:09