https://forge.codesys.com/forge/talk/Engineering/thread/eb70492ad7/2022-08-22T20:51:47.155000ZRecent posts to Does i2C interfere with spi used for CAN bus2022-08-22T20:51:47.155000Z2022-08-22T20:51:47.155000ZDavidBohttps://forge.codesys.com/u/davidbo/https://forge.codesys.comd883a7f6749d6163f6a9b4e958416ea8704370c0

<div class="markdown_content"><p>maybe I should add<br/> uname -a<br/> Linux cilix-19 5.10.103-v7+ #1529 SMP Tue Mar 8 12:21:37 GMT 2022 armv7l GNU/Linux</p> <p>I have reason to believe it might work with an older version of Buster and CODESYS</p></div>

2022-08-22T20:21:25.906000Z2022-08-22T20:21:25.906000ZDavidBohttps://forge.codesys.com/u/davidbo/https://forge.codesys.com517aea7ca7899030005f9ac51b328fcc929212b5

<div class="markdown_content"><p>CODESYS Control For Raspberry Pi MC SL<br/> Version 4.4.0.0</p> <p>Version: 3.5.17.0<br/> Description: CANopen Manager<br/> Configuration version: 3.5.1.0</p> <p>Baud rate 250kbit/s<br/> MainTask Interval 100ms</p> <p>SYNC<br/> Cycle period 100ms, Window length 30ms<br/> I have 8 nodes<br/> For each node I have 4 Rx PDO and 4 Tx PDO. Heart beat every 400ms</p> <p>Pican2 as CAN bus controller mcp2515<br/> I have noticed when I enable i2c in /boot/config.txt with<br/> dtparam=i2c_arm=on<br/> I do have an i2c device a PicoUPS<br/> The communication with the 8 devices stops.<br/> Have others discovered problems with simultaneous use of i2C and spi ?</p></div>