HCI_UART on THINGY:91

[Hoang]

Dear, 

I am trying to test BLE on the THINGY:91. 

Follow the Q&A for "Introduction to Nordic THINGY:91" webinar, Q12  of @Petter Myhre

I tried with Zephyr HCI UART example 

But, I couldn't find nrf52840_pca20035.overlay. From the schematic of THINGY:91, I created file: nrf52840_pca20035.overlay

/* SPDX-License-Identifier: Apache-2.0 */

/ {
	chosen {
		zephyr,bt-uart=&uart1;
	};
};

&uart1 {
	current-speed = <1000000>;
	status = "okay";
	tx-pin = <25>;
	rx-pin = <32>;
	rts-pin = <22>;
	cts-pin = <19>;
};

Then, 

use nRF91 DK to program for THINGY:91 (SW SELECT to nRF52) 

After programming, I couldn't find any serial port to connect to THINGY:91 anymore!!!

I tried to restart my computer and reset thingy:91, but the same problem. 

Did I do something wrong? How can I fix it?

Thanks so much 

Best Regards, 

Hoang Nguyen

[Martin Lesund]

See the last answer in this thread for the solution:
https://devzone.nordicsemi.com/f/nordic-q-a/52689/nrf9160-lte-sensor-gateway-on-thingy-91/217018#217018

[Hoang]

Thanks, Martin Lesund, 

I will try and give you feedback soon 

BR, 

Hoang Nguyen

[Dheeraj]

Hi,

I also got struck with the same issue.

Trying to get ble_lte_gateway working on the Thingy:91.

Martin Lesund said:

The code for the UART bridge on the nRF52840 on the Thingy is released: https://github.com/NordicPlayground/fw-nrfconnect-nrf/tree/master/samples/usb/usb_uart_bridge

This code is getting compiled and build successfully for nrf52840_pca20035.

I still can't get BLE (bluetooth\hci_uart) code to work for PCA20035. could program, and it works normal, I couldn't find the serial port to see the log file anymore.

Do you have any recommendations or references for the concern (Get the BLE values on Thingy91: PCA2035) from your end.to fix this problem?

Please help me, as its a roadblock for me at final stage.

Thanks

[Martin Lesund]

See the last answer in this thread for the solution:
https://devzone.nordicsemi.com/f/nordic-q-a/52689/nrf9160-lte-sensor-gateway-on-thingy-91/217018#217018

[Dheeraj]

Hi Martin,

Martin Lesund said:

See the last answer in this thread for the solution:
https://devzone.nordicsemi.com/f/nordic-q-a/52689/nrf9160-lte-sensor-gateway-on-thingy-91/217018#217018

I have gone through this thread and have implemented the same by following the thread.

So, as suggested above, I have flashed "nRF52840_pca20035_hci_uart.hex" on  nRF52840 SoC (PCA20035) and "nRF9160_pca20035_lte_ble_gateway.hex" on nRF9160 SiP (PCA20035), but unfortunately I did NOT see any logs from nRF9160 and nRF52840 on Teraterm.

I have tried to connect the Thingy91 (PCA20035) to PC using USB cable, but did NOT see any USB ports to get the logs.

Please help to resolve this issue

Thanks

[Martin Lesund]

Hi,

Please do not post duplicate questions

You need to use Segger RTT and not UART for logging in that sample.

The UART that is usually used for logging in the nrf91 on the Thingy:91 is in this sample used for the HCI between the nrf91 and the nrf52.