Hello,
Thanks for the reference.
First, from the beginning I had to change in sam_dmac.c:
locate_data(".lpram"), aligned(16);
to
locate_data(".lpram") aligned_data(16);
Because the compiler made errors. Is this correct?? If so, should I push it
to the repo??
The DMA is configured very
Hi Bert,
Are you configuring the DMA similar to way he did:
https://web.archive.org/web/20221027190645/http://www.lucadavidian.com/2018/03/08/wifi-controlled-neo-pixels-strips/
?
Although on NuttX each driver is a separated instance, under the hook
the basic configuration will be similar.
BR,
Hello,
I have figured what causes the transmission problem.
I had to setup the Channel Control B Register with:
DMAC_CHCTRLB_TRIGACT_BLOCK instead of DMAC_CHCTRLB_TRIGACT_BEAT
Because it would only do one pulse. With TRIGACT_BLOCK, it looks better but
DMAC do not read all the buffer. it seams
