RE: UART communication between nRF52 and nRF91 on nRF9160 DK

dtquang89 — Tue, 06 Jul 2021 17:11:40 GMT

Dear Simon,

Thank you for the suggestion. I have adjusted the UART configuration the same way in lte_ble_gateway sample and now it works for my case.

What I have changed:

For nRF52840: hci_lpuart sample

For nRF9160: ble + mqtt

Thanks for your support.

Best regards,

Quang

RE: UART communication between nRF52 and nRF91 on nRF9160 DK

Simon — Mon, 05 Jul 2021 15:28:41 GMT

Please check out the sample lte_ble_gateway to see how to communicate between the nRF52840 and the nRF9160 on the nRF9160DK.

After NCS v1.4.0, the sample was modified to use the low power UART driver, so the sample hci_puart has to get programmed onto the nRF52840. Follow the instructions in https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.6.0/nrf/samples/nrf9160/lte_ble_gateway/README.html to get it working.

[quote user=""]And now the BLE central example got an error at uart_init(), with error code 134 . The error was at uart_callback_set() function. I cannot interpret this error, if you have some idea about this error, that could be great.[/quote]

Try using uart2, like the lte_ble_gateway sample: https://github.com/nrfconnect/sdk-nrf/blob/v1.6.0/samples/nrf9160/lte_ble_gateway/boards/nrf9160dk_nrf9160ns.overlay#L13

Best regards,

Simon