Missing UART Interrupt in MKM34Z256VLL7

rahul_4 — Mon, 06 Nov 2023 14:28:01 GMT

Hi,

Due to electrical noise in the board during reset or power on, the uart interrupt is getting hit multiple times and causing the uart module interrupt to miss, so to recover this situation, I have to reset the mcu until it gets recover. I am using the kinetics bare metal drivers.

I have tried multiple ways for recovery -

1. adding delay before UART initialize
2. Enable interrupt after some time

but still sometimes interrupt is getting missed.

API reference manual for Kinetis M bare-metal drivers and software examples

Thanks,
Rahul

Re: Missing UART Interrupt in MKM34Z256VLL7

RaRo — Mon, 06 Nov 2023 18:27:41 GMT

Hello @rahul_4,

Could you please try with some of the UART SDK's examples? Is the interruption being detected now? You could download the SDK here.

Also, are you using an NXP's EVK or a custom board?

Kind regards, Raul.

Kinetis MicrocontrollersのトピックRe: Missing UART Interrupt in MKM34Z256VLL7

Missing UART Interrupt in MKM34Z256VLL7

API reference manual for Kinetis M bare-metal drivers and software examples

Re: Missing UART Interrupt in MKM34Z256VLL7