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4 years ago.
nRF52-DK interrupt from sensor (MPR121 or CAP1298) hangs
i'm experiencing weird behavior that never happened before and i don't know what's happening. I have a touch shield for arduino based on MPR121 which is connected to nRF52-DK and i'm using Sam Grove MPR121 library (link on bottom).
This sensor worked flawlesly on my nRF51-DK and even on my custom nRF51 board but when i upload simple hello_world code (which worked and still works on other boards) to nRF52 and i touch buttons on shield, board freezes/hangs. I think that there is an issue with interrupts because i know that shield is connected properly because i get readings from registerDump function. Also i made a breakout board for microchip CAP1298 touch sensor which is similar to MPR121 but i got the same result - works on other boards without errors but on nRF52 when interrupt occurs app drops.
I also thought that library is not compatible with nRF52 so i used sensor interrupt to only toggle a led (without reading data from sensor) and my led never goes on because board hangs immediately on touch. Strangest of all is that normal button interrupt work without errors.
Am i doing something wrong? Did i missed something related to nRF52 interrupts? Thx
3 years, 8 months ago.
The comments about the library, what did you change? I have a micro:bit with a pi-cap and dump registers work but not interrupts. https://developer.mbed.org/users/owenbrotherwood/code/MPR121_HelloWorld_pi_cap_microbit/