HATs and other add-ons • high cpu with 2-CH RS485 HAT Interface-Card

Hi All!
I have problems with this card (2-CH RS485 HAT)
https://www.waveshare.com/wiki/2-CH_RS485_HAT
and raspberry 5 with Debian 12...

As soon as the module is loaded via /boot/config.txt (dtoverlay=sc16is752-spi1,int_pin=24), the top output shows (33.3 0.0 4:14.01 irq/172-spi1.0 ). So a permanent CPU utilization of over 30%.

Has anyone else seen the same thing?

thanks

Statistics: Posted by toldap — Mon Feb 05, 2024 9:01 am — Replies 0 — Views 25

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