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NMI interrupt on i.MXRT

Question asked by Antoine Zen-Ruffinen on May 12, 2020
Latest reply on May 26, 2020 by Armand Ciejak



We are using ZephrOS V2.1 on IMXRT1062. In some condition (uncertain which for now), the MCU end-up in the NMI handler that is just a infinite loop in ZephyrOS, freezing our application.


I've understand that on ARM Cortex-M, use of the NMI interrupt is SoC/MCU dependent. Reading all possible NXP documentation, I understand that the NMI input can be routed to the WAKEUP pin. Are they other use of the NMI in the SoC IP ? Any future documentation ? What else could trigger the NMI interrupt ?