connecting sim800l and neo_6m to nrf52840dk

[rania amara]

hi , i'm  trying to connet sim800l and neo_6m  modules to nrf52840dk using zephyr ,however i can't find any code source to use .,or do i have to creat the code from scratch if so can you give me the main steps to do

[Charlie]

Hi Rania,

It is hard to say where is the issue comes just from the codes. I can guide you how to debug this issue.

You can use a TTL USB converter + Serial Terminal(App from the nRF Connect for Desktop) to test with different modules of your system and make sure they are working as expected independently.

Following are the items you can test.

1. Refer to sim800l speciation to test the AT commands you want to use.

2. Refer to neo_6m Interface Manual to verify the GPS data you will get.

3. Test with nRF52840 with UART echo — Zephyr Project Documentation to learn how UART works.

Please pay attention that the NEO-6M GPS module with crystal and ROM has reached End-of-Life according to NEO-6 series | u-blox.

Best regards,

Charlie