Hello, Update: I got the condition in the while loop wrong. After fixing this it works now. I'll try to post a working patch of the SPI driver as soon as possible.
Thanks, Niteesh On Wed, Oct 14, 2020 at 12:39 PM Niteesh G. S. <niteesh...@gmail.com> wrote: > Hello, > > First of all really sorry for the long delay, I am preparing for a > robotics competition > and it eats up most of my free time. > > I finally got a logic analyzer and tested the SPI driver using it. And as > expected the > waveforms weren't right. To understand the device better and also to > narrow down > the problem I decided to write a simple polled driver. This driver can be > found > here > > https://github.com/gs-niteesh/rtems/blob/8a75a2f5eb6b4eb852da9563b53b6c021463a8c7/bsps/arm/beagle/spi/simple-spi.c > > Commit: > https://github.com/gs-niteesh/rtems/commit/8a75a2f5eb6b4eb852da9563b53b6c021463a8c7 > > This way I was able to get my first byte pushed but the succeeding bytes > time out. I > added the time out to make sure the pushed data is transferred before > getting overwritten > by the succeeding bytes. I also checked other drivers to make sure adding > a timeout is > necessary. > On removing the timeout I was able to get all my bytes pushed successfully. > This was verified using the logic analyzer. But on using the timeout I > face the mentioned > problem. I even tried decreasing the time but still, I face the same issue. > What could be causing the problem? Is there any other way to debug this? > > Thanks, > Niteesh. > >
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