On 17.01.2022 16:08:33, Marc Kleine-Budde wrote: > On 17.01.2022 14:53:46, Markus Mirevik wrote: > > > That scope picture looks good! Can you include both runs of the IRQ > > > handler in one scope picture? I'm interested if there is activity or > > > a glich on IRQ line. > > > > Both are included. The last (number 7) is the one extra reading of the > > register!? > > Doh! Indeed, you'r right, missed that. Can you take a scope picture with falling edge triggered IRQ? (Note for the out of context reader: _Always_ use level triggered IRQs with the mcp251xfd in production use.) regards, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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