Does i2C interfere with spi used for CAN bus

DavidBo
2022-08-22
2022-08-22
  • DavidBo - 2022-08-22

    CODESYS Control For Raspberry Pi MC SL
    Version 4.4.0.0

    Version: 3.5.17.0
    Description: CANopen Manager
    Configuration version: 3.5.1.0

    Baud rate 250kbit/s
    MainTask Interval 100ms

    SYNC
    Cycle period 100ms, Window length 30ms
    I have 8 nodes
    For each node I have 4 Rx PDO and 4 Tx PDO. Heart beat every 400ms

    Pican2 as CAN bus controller mcp2515
    I have noticed when I enable i2c in /boot/config.txt with
    dtparam=i2c_arm=on
    I do have an i2c device a PicoUPS
    The communication with the 8 devices stops.
    Have others discovered problems with simultaneous use of i2C and spi ?

     
  • DavidBo - 2022-08-22

    maybe I should add
    uname -a
    Linux cilix-19 5.10.103-v7+ #1529 SMP Tue Mar 8 12:21:37 GMT 2022 armv7l GNU/Linux

    I have reason to believe it might work with an older version of Buster and CODESYS

     

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