uDMA with wide timers?

Curt Stienstra

Other Parts Discussed in Thread: TM4C123GH6PM

I'm using a TM4C123GH6PM and have WTIMER0 TIMER_B in edge-time mode working with interrupts. However, I'd like to get it working with uDMA but it seems only the "narrow" (16/32 bit) timers support DMA. Is this true?

over 12 years ago

0 Bobby Bradford over 12 years ago

TI__Genius 10040 points

Taking a look at the datasheet, table 9-1, it would seem that only narrow timers are supported. However, references to GPTImers 6-11 (in this table) are actually the wide timers 0-5. This matches up with the definitions in the "udma.h" header file, in the driverlib folder.

--Bobby

0 Curt Stienstra over 12 years ago in reply to Bobby Bradford

Prodigy 60 points

Bobby,

I wondered if the higher channels might be the wide uDMA channels but didn't think to check the udma.h file for them. I have confirmed the DMA for the wide timers works as you indicated.

Thanks,

Curt

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uDMA with wide timers?