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SPI master not running after upgrade

laus
2018-03-04
2018-03-05
  • laus - 2018-03-04

    Dear all
    SPI master is not working any more after installing the latest raspbian-2017-12-01. It runs perfectly well with previous version (https://downloads.raspberrypi.org/raspb ... 017-09-08/ kernel 4.9.41-v7+).
    It seems that the SPI kernel 4.9.59-v7+ interface has changed in RPi side creating the need for a change in CODESYS run time. Something to do with clock divider, maybe. I tried setting SPI master parameter _dMaxSpeed to several different values, no effect.
    I have tested with Piface OI driver, but all hardware using SPI interface would be affected and that is why I would like to 3S personal to take measures.
    Thanks
    L.P.Laus

    IMG: Sem tΓ­tulo4.png

     
  • eschwellinger

    eschwellinger - 2018-03-04

    Hi,
    yes, the workaround is to reduce the SPI maxspeed in
    the CODESYS configuration.
    BR
    Edwin

    IMG: SPIMaxSpeed.jpg

     
  • laus - 2018-03-04

    Hi
    I have tried it, but it did not work. Even reloading the application. Any additional hint?

     
  • eschwellinger

    eschwellinger - 2018-03-05

    Hi,
    I use:
    - PI3 & PIFACE
    - Version 3.5.12.10 CODESYS and Raspberry PI runtime
    - Rasbian Stretch from 11-29-2017
    - enable the SPI under raspi-config
    - specify the maxspeed to 100000 in the CODESYS Project (PIFace IOdriver exampe)
    this works for me!
    BR
    Edwin

     

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