linguini1 commented on issue #15826: URL: https://github.com/apache/nuttx/issues/15826#issuecomment-2666846725
> [@linguini1](https://github.com/linguini1) what about MS56XX stack size ? I don't see CONFIG_MS56XX_THREAD_STACKSIZE in your config, and the default 1024 may be not enough. It appears after some debugging that the issue was that the MS56xx driver was not waiting long enough between measurement commands, so pressure was always being read at 0. I replaced the `up_udelay` calls with `usleep` calls and I'm now reading the correct pressure, 101.8kPa. I don't know if something is wrong with the `up_udelay` interface in my case and it is shorter than expected? Specifically this call: https://github.com/apache/nuttx/blob/c9a8f96aace9f63e21e7883c8774330adc4d99ff/drivers/sensors/ms56xx_uorb.c#L289 If I increase the sleep time by an order of magnitude the pressure reads correctly. Changing it to 11000us also doesn't seem to be enough, the pressure still reads as 0. I suppose this might because `CONFIG_LOOPS_PER_MILLISECOND` isn't calibrated for my board? Would it be different from other STM32H7 chips if the clock frequency is the same, 480MHz? Is there a way provided by NuttX to calibrate loops per millisecond properly? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
