The more appropriate way to handle this is to have the ISR drop the needed data into a queue, with a separate process to pull data from the queue, process it, and return the result where it is needed. This can either be triggered by a queue event, a suspended process which gets notified, or in your...

When I call the function below from an ISR, I'm randomly getting Guru Meditation Error: Core 1 panic'ed (StoreProhibited) It might run fine for 30 seconds, or 10 minutes before I get the crash. When I call it from loop(), it appears to work fine. I need to call it from my ISR because I'm doing a med...

I guess I assumed the way that was worded that the 80ns thing was a one-time deal at power up I'm experiencing this issue repeatedly. I did move my ISR to trigger on GPIO12 instead, and the problem went away. It'll mean a PCB change but that does mean it's definitely something up with GPIO39 and ADC.

I have an application where I have a LCD touch screen on pins 32/33/25/26 (analog read on 32/33) and separately an ISR that is triggered on pin 39. For some reason, the ADC on pins 32/33 for the touch screen, when enabled, are keeping the ISR from running in a timely manner. The ISR (it's measuring ...