GPS with nRF52 on i2c

RE: GPS with nRF52 on i2c

Stein Helge Riise — Tue, 28 Mar 2017 09:04:59 GMT

Hi, Actually got i working now. Slight misunderstading on how the TWI-lib worked. Thnx. :-)

RE: GPS with nRF52 on i2c

MartinBL — Tue, 28 Mar 2017 08:49:13 GMT

Hi, You should try the latest "twi_scanner" example in SDK 13.0.0 to see if you get any contact with your sensor at all. If you can't figure it out I suggest you open a new thread and describe your issues in more details.

RE: GPS with nRF52 on i2c

Stein Helge Riise — Thu, 23 Mar 2017 13:06:12 GMT

Hi,

I'm struggeling with a similar problem. uBlox8-SAM-M8q + nRF52 + i2c/TW. Please share :-)

RE: GPS with nRF52 on i2c

MartinBL — Fri, 10 Jun 2016 08:31:26 GMT

Happy to help. Do you mind sharing your solution?

RE: GPS with nRF52 on i2c

Tony — Fri, 10 Jun 2016 08:17:42 GMT

Hi Martin, Thank you so much for your guidance and teh test code. I was able finally to make it work. Appreciate your help !

RE: GPS with nRF52 on i2c

MartinBL — Tue, 07 Jun 2016 09:28:35 GMT

Hi,

I did a quick test of your code (on a different type of slave) and it seemed to work fine out of the box. Have you checked and double checked that you are using the right address and pins?

Do nrf_drv_twi_tx() or rx() return any error codes?
Is the TWI event handler at any point showing an NRF_DRV_TWI_EVT_ADDRESS_NACK or NRF_DRV_TWI_EVT_DATA_NACK event instead of NRF_DRV_TWI_EVT_DONE?
Do you have a logic analyzer?
Are you able to get a response from the GPS at all? You can try this very simple example to see if you have contact with the GPS.