nrf52832 executing TWI function from app_timer handler

[David]

Hello,

When i execute a function that uses TWI from a timer handler the NRF gets stuck. I assumed that this issue occurs because of interrupt priority so i gave the TWI a higher priority then the priority of APP_TIMER, but it didn't help.

What can be the cause of this issue ?

• The timer interrupt is not the issue because when my function in the timer handler is commented out it works as it should.

Thanks !!

[Nguyen Hoan Hoang]

Does the I2C works outside of interrupt ? Make sure the I2C works first then use it in timer interrupt.

You can also try the I2C driver from EHAL. It's a lot simpler and can be used in interrupt. There is an use case example from this blog https://devzone.nordicsemi.com/blogs/1223/writing-ble-firmware-with-a-few-lines-of-code-part/

[David]

Thanks for your answer. I2C works out of the interrupt handler. Currently i would like to solve my issue and not try other i2c drivers.