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OOPS THIS IS AN EDITED VERSION. Originally I wrote my protocol was 8n1
where in fact its 8n2......After several weeks of trying to get 2
162's to talk to each other I am still no further ahead. It seems I
picked a bad processor to have usart troubles with. The 162 does not
debug properly on studio4 (in list of known problems)or with jtagice
mk2.(also in list of known problems) Therefore I haven't been able to
determine where my problem is. I have tried running several different
programs with 9 bits and 8 bits.I have also tried on 2 separate 162's
I have tried a program that reads the pins of one 162 and does not
turn on txen unless there is a change of pin inputs. So here are a
couple of questions. Firstly this is to be a single direction only,
therefore I am only connecting tx from chip one to rx on chip 2. plus
a ground. Does a usart need a return signal to work? Secondly on the
program that only transmits when there is a pin change, I would have
thought that the tx line would be idle until a pin change was detected
but there is a constant signal. Clock is 8meg, baud rate is 19,200.
8n2 The signal I am getting is a long period high followed by L L H
L H H L H L H H L THEN back to the long period high. The time for each
byte is approx .5 ms The whole usart thing is new to me and I do not
know what to expect. Any help would be greatly appreciated.
Many thanks Bazza.

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