ly more critical problem for our
> implementation at Elektroline.cz company is DMA support for U(S)ART. That
> will also be a nice way to find if there are some further DMA TX bugs.
>
> Best regards,
> Michal Lenc
>
> ------ Původní e-mail --
> Od: Simon Filgis
ice way to find if there are some further DMA TX bugs.
Best regards,
Michal Lenc
-- Původní e-mail --
Od: Simon Filgis
Komu: dev@nuttx.apache.org
Datum: 14. 2. 2022 16:33:32
Předmět: Re: SPI with DMA on SAME70
"Dear all,
I started to follow up this topic.
Found that one
Dear all,
I started to follow up this topic.
Found that one in sam_hsmci.c:
/* There is some unresolved issue with the SAMV7 DMA. TX DMA is currently
* disabled.
*/
#undef HSCMI_NORXDMA /* Define to disable RX DMA */
*#define HSCMI_NOTXDMA1 /* Define to disable TX
Hello Michael,
Thank you for your answer. That is true, SPI driver's initial flag setup is
0.
The flags are evaluated dynamically and very meaningful
within spi_exchange() and set via
sam_dmaconfig(spics->rxdma, rxflags);
sam_dmaconfig(spics->txdma, txflags);
I will try with setup initial f
Hello Simon,
I did take a look into SPI driver for SAME70 a few months ago. The one thing
that was a little bit weird to me was the lack of DMA flags passed to sam_
dmachannel() function (somewhere here https://github.com/apache/incubator-
nuttx/blob/master/arch/arm/src/samv7/sam_spi.c#L2043) co
