twi_scanner for nRF52840DK + nRF Connect SDK

Hi there!

Moving forward, I have compiled a version that seems to work (initially). However, I get stuck:

- I execute a successful nrfx_twim_xfer(&i2c_instance, &xdesc, 0)

- My evt_handler doesn't get invoked

- nrfx_twim_is_busy(&i2c_instance) is always true

So i cannot invoke nrfx_twim_xfer any more.

As this is a twim_scanner it is very likely that the address I'm polling doesn't belong to any device (so nobody will never reply), so, my questions:

1. If I poll an address with no device, will the library stay on busy forever?

2. Is there a way to check for a timeout, clear the busy state and run more transfers?

Regards,

David.

Hi,

Have you remembered to enable the interrupts by calling IRQ_DIRECT_CONNECT() and irq_enable() in your init routine?

Something like this:

	IRQ_DIRECT_CONNECT(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn, 0, nrfx_twim_0_irq_handler, 0);
	irq_enable(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn);

The callback handler won't be invoked if this hasn't been done already.

regards

Jared 

Hi Jared:

No, I didn't know it. I will try later and come back here.

Thank you,

David.

Hi Jared:

No, I didn't know it. I will try later and come back here.

Thank you,

David.