My application stopped running properly after I edited the nrf_drv_twi.c file

RE: My application stopped running properly after I edited the nrf_drv_twi.c file

Robert Haddad — Fri, 11 Dec 2020 12:12:18 GMT

Okay, will try. Thank you

RE: My application stopped running properly after I edited the nrf_drv_twi.c file

Jørgen Holmefjord — Fri, 11 Dec 2020 09:53:09 GMT

Not directly. NRFX drivers are splitted into separate files for TWI and TWIM, while the old driver (nrf_drv_twi) is a merge of these. You may look at the changes in nrfx repository (search for nrfx_twi.c and nrfx_twim.c), you may be able to integrate the changes into the old driver.

RE: My application stopped running properly after I edited the nrf_drv_twi.c file

Robert Haddad — Thu, 10 Dec 2020 18:59:30 GMT

Oh okay, so I take it there isn't a code snippet I can insert to make it work?

RE: My application stopped running properly after I edited the nrf_drv_twi.c file

Jørgen Holmefjord — Thu, 10 Dec 2020 18:22:38 GMT

Som fixes related to this issue was added to the drivers in nrfx v2.1.0. This version is not supported for nRF5 SDK, and definitely not for SDK versions before 15.0.0 (where nrfx drivers replaced legacy nrf_drv_ drivers). The changes was later also added to nrfx v1.8.2, and nrfx v1.8.4 is used in SDK 17.0.0. If you migrate to SDK v17.0.x, it is likely that the issue you are seeing is fixed.

RE: My application stopped running properly after I edited the nrf_drv_twi.c file

Robert Haddad — Thu, 10 Dec 2020 16:51:06 GMT

Thank you. That worked. It was strange. The issue I'm having exactly like this one:

https://devzone.nordicsemi.com/f/nordic-q-a/43931/i2c-stuck-on-twi-irq

For some reason after 30 minutes to 2 or 3 hours of normal operation, it gets stuck in the do_stop_check loop. I can see that the transfer function is returning true, but then it goes back to the do_stop_check and on and on. When this happens the device completely stops responding until I cycle the power or re-flash it

RE: My application stopped running properly after I edited the nrf_drv_twi.c file

Jørgen Holmefjord — Thu, 10 Dec 2020 16:33:32 GMT

Can you explain a bit more about the "stall" that you are experiencing? Do you get the NRF_TWI_EVENT_ERROR event that causes the stop_check? Otherwise, this check should only happen at the end of a transfer. As far as I can understand, the code you added will cause a fault after transfer of 5 bytes on every transfer, regardless of any errors or end of the transfer.

If you made modifications to the file, and it is not working after reverting the changes, I would recommend that you try to copy back the file from the SDK zip-file, to make sure you reverted all changes.

RE: My application stopped running properly after I edited the nrf_drv_twi.c file

Robert Haddad — Wed, 09 Dec 2020 21:12:00 GMT

Hi Jørgen,

Yes I'm using SDK version 12.3. That's what I started with and I'm scared to migrate to something else because I'm still getting the hang of the system.

Best regards,

Robert

RE: My application stopped running properly after I edited the nrf_drv_twi.c file

Jørgen Holmefjord — Wed, 09 Dec 2020 13:09:07 GMT

Hi,

Which SDK version are you using? nrf_drv_twi.c has not contained the function twi_transfer() since SDK 14.2.0. Have you tried migrating your application to a more recent SDK version?

Best regards,
Jørgen