TWI/I2C interrupt problem

RE: TWI/I2C interrupt problem

Jared — Wed, 29 Jun 2022 13:06:09 GMT

I see. Good!!

Could you verify the answer that helped you, so that others that are wondering the same could find it?

Thanks!

regards

Jared

RE: TWI/I2C interrupt problem

LeoSanta — Wed, 29 Jun 2022 12:40:47 GMT

No, I meant that TWIM0 now is working with nrfx_twim_0_irq_handler and TWIM1 with nrfx_twim_1_irq_handler, just to be expected.

Thanks again for your help. I really was quite useful to solve this.

RE: TWI/I2C interrupt problem

Jared — Wed, 29 Jun 2022 07:18:49 GMT

You can use both peripherals but TWIM0 use another IRQ handler, namely nrfx_twim_0_irq_handler. If you see that nrfx_twim_1_irq_handler works for both of them then maybe the IRQ for nrfx_twim_0_irq_handler has already been enabled somewhere else in your code?

RE: TWI/I2C interrupt problem

LeoSanta — Tue, 28 Jun 2022 13:39:38 GMT

Hi Jared. Thank you for your help and for your quick reply.

The doubt was if is only possible to use TWIM1, but I was trying with TWIM0 and 1 and it works for both of them. The problem was that I did not put the IRQ_DIRECT_CONNECT line.

RE: TWI/I2C interrupt problem

Jared — Tue, 28 Jun 2022 13:35:56 GMT

Hi,

Did the suggested solution work? I checked the IRQ list for nRF52833 in nrfx and that handler was assigned for that peripheral. Is there any reason for your doubt?

regards

Jared

RE: TWI/I2C interrupt problem

LeoSanta — Tue, 28 Jun 2022 12:57:06 GMT

Thank you a lot Jared. That was the problem.

I have a doubt: where do you check that for the NRF52833 I should use nrfx_twim_1_irq_handler?

RE: TWI/I2C interrupt problem

Jared — Mon, 27 Jun 2022 13:26:55 GMT

Hi,

I see that you pass the callback handler to the init function, but where do you connect the IRQ to the callback handler by calling IRQ_DIRECT_CONNECT(), see this example. For the nRF52833, you should use nrfx_twim_1_irq_handler.

regards

Jared