asm in 2 cogs. got it workin.

agfa

having trouble getting 2 asm routines to run in separate cogs.· i created a short program as a test which works, so i'm using it as a model for another program but i get erratic unpredictable results.· i'm sure i have something wrong that is creating a conflict.

i've attached my model program.· is this the correct way to start 2 cogs·running asm?· could someone point me in the right direction for more info on this?

Post Edited (agfa) : 11/5/2008 2:38:07 AM GMT

Cluso99

set x and y before you launch the cogs as the cogs are probably done before these statements are executed - spin is slow

agfa

thanks for looking at it.

the program i posted actually works correctly.· the symptoms i get are things like outputs going high that haven't had dirs set, or all cogs apparently shutting down.· weird stuff.· i thought i was going about it all wrong in the dat section or something.

I'll simplify·the program, with the problem, as much as i can and still get the symptoms and post it tommorrow.

nutson

- Rename the labels :loop (used twice) to :loop1 and :loop2
- place an ORG after TST2, you want the second part of the DAT section to be assembled starting from·location 0 again.···

agfa

i've posted the program.

my goal is to become more familiar with asm.· i wrote this to·read pulse widths from a RC receiver, process it,·and generate servo outs.· the first asm cog generates servo outputs, the second measures input pulse widths.· as a test i want to measure it's own output pulses.· i was able to·do this with spin, but wanted to do it in asm.

the first problem i had was with the waitpeq, my attempts to troubleshoot it created other unusual operation.

when i add the org·as nutson suggested i don't get any·PWM output and i get a return (pulsout) value of 666, as expected.· without the org i get PWM but the return value is 33947910 instead of 666.

i have I/O 0·toggle an LED along with the debug statement.· in both cases the LED will eventually quit·toggling but the debug continues to·occur.

any insight?

agfa

thanks Cluso99 and nutson, for the suggestions.

agfa

Post Edited (agfa) : 6/14/2009 1:20:07 PM GMT