Thanks. From the kernel log I can see that there is a communication problem (crc error). Which firmware and hardware revison do the modules have (numbers left of the IO connector or scan the dcm with for example your mobile)?

Hi,

Could you please provide more details?

Image version
Running kernel version
Kernel log / dmesg

With this we can hopefully find together a first clue.

Nicolai

Could you please attach the complete log file?

Nicolai

Hi

Has the Con CAN overlay been enabled? There should be a line in /boot/config.txt of `dtoverlay=revpi-con-can` or check with `revpi-config status revpi-con-can`.

Enable overlay: revpi-config enable revpi-con-can
Disable overlay: revpi-config disable revpi-con-can

Nicolai

Hi Wiekon, ohne groß Erfahrung damit zu haben, bin ich bei einer schnellen Suche auf CANL2 gestoßen. Schau mal ob das eventuell das ist, was du suchst: https://help.codesys.com/webapp/hGcF55fadXXw7LxTlfIUoErJcVQ%2Ffld-CAN-Low-Level;product=CAA%20Can%20Low%20Level%20Extern;version=3.5.17.0 Gruß Nicolai

Hi

Has the correct overlay been loaded (dtoverlay=revpi-compact in /boot/config.txt)? Are there any errors in dmesg respective /var/log/kern.log?

Nicolai

Hi Steffen, please check if the problem still occurs, if the external antenna is activated. Even without an antenna connected the short pigtail can bring improvements. You can enable the antenna as following: # Enable external antenna sudo revpi-config enable external-antenna # Reboot device sudo re...

Hi Andre, you can change the product type of the image as following: Newer models with hat eeprom (RevPi Connect 4, Core S since revision 1.1): These devices contain an eeprom which stores all the relevant device data and the changes are automatically detected 1. Edit /boot/config.txt and remove lin...

Yes, the other inputs are not affected by readings from one sensor. Could you please sketch your schematic / wiring so we can get a better understanding of your setup? Thanks!

Nicolai

Answer is simple: the 2021image was released even before the cm4s (which is the compute module in connect S) was invented. Thus the software cannot support this module. Support was added later. See the release notes, which state what devices are supported for a particular image. Nevertheless I reall...