I've been doing some bare-metal assembly programming, and have been bashing my head for a few days trying to figure out why this happens.
Writing to one device seems to prevent me from writing to another for some time. I noticed while trying to use the timer and gpio in the same program. Attached is some example code (as simplified as I could make it) that fails to turn on USR0 when there shouldn't be a problem. However, if you put the instruction that turns on USR0 before the instruction that stores the counter, the light works (and the counter does not). This is not a huge deal as the problem only exits with Timers 0 and 1, but it bothers me that I can't figure out why. I've spent hours looking at the manuals for the processor and architecture, but I don't know what could be causing this. Has anyone seen this before or have suggestions what it could be? -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/41f2237a-5928-4687-aa6b-cd7b0c9579dd%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
timer.s
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