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PRO**TEUS, VTERM and PIC USART Problem.

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neuralc

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compim & vterm

Hi all,

I'm trying to simulate a program with a PIC->PC communication. For that I use Pro**Teus with the VTERM module connected to the RX/TX of the 16F870 USART.

For error checking I'm using the 9th bit of the usart to send the EVEN parity bit. After simulate on MPLAB I see that the bit TX9D(9th bit) is correctly set (When we need it to get EVEN number of 1's) but on PRO**TEUS (new version SP6) the bit never change the value, neither set it on the code the value it's always zero.

So, for everybody that want simulates this functionality be careful.

NeuralC
 

T

THE BORG

Guest
compim vterm even

send me a copy of the problem

put in in a folder called problem
within sp6 in fm1

and let me know then i can see further the problem

perhaps will be easy when i see dsn....
 

T

THE BORG

Guest
ok
after reading again
i see the problem

you cannot affix parity to the data stream

this isnt common practice

parity must be its own
bit {port pin}
so parity non parity toggle can be preserved

in sync
or youll get buffer under / overruns
and funny results

i think your daft to use this

but i also think you need to set the compim to 9 bit even parity 1 start and youll need a stop bit {port pin} also
to locate the 8 th data bit in the stream for stacking....


so parity flop can easily be read in sync

and baud sync status preserved

so i think it will be an incorrect setting somewhere

serial can be a nightmare
 

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