lost communication with Microsquirt

Bernard Fife · Post by **Bernard Fife** » Sat Sep 08, 2007 10:55 am

ofredo,

Something else you might try is the loopback test (to see if the serial port is still working). To do this, you jumper pins 2 and 3 on the cable end, and use hyperterminal (or mini-terminal under Communications in MegaTune, this is much easier) to see if characters you type are echo'd. There's more on this in steps 26.a) to 26.e) here:

http://www.megamanual.com/ms2/V3assemble.htm#serial

Lance.

ofredo · Post by **ofredo** » Sat Sep 08, 2007 11:10 am

We have tried two seperate laptops, laptop "A" with a serial port and latop "B" with usb to serial port adapter.
When communication ceased laptop "A" was in use and powered by ac adapter.
We could never get any response with laptop "B"

Post by **Bruce Bowling** » Sat Sep 08, 2007 11:39 am

ofredo wrote:still can not access bootloader mode, no communication what so ever.
unit has 5 volts at ref. wire

Email me your address (send to bbowling@earthlink.net). I will email you a few other things to try...

- Bruce

Bernard Fife · Post by **Bernard Fife** » Sat Sep 08, 2007 11:52 am

ofredo,

Another thing that can occassionally cause issues like yours is the serial cable plug not being fully inserted into the socket (it can seem to be in but not be fully seated), so you might want to check that too.

Lance.