Thingy:91 and nRF9160

[Tommy]

Hi

I have a few questions as a newbee on Nordi products:

• Can nRF9160 be used as modem via UART in the same way as i.e. Simcom's ?
• Is it possible to run code on the Arm M33 or do i need another processor for sending data to a server ?
• Can nRF9160 Arm M33 run Micropython or is it only the nRF52840 ?
• What is the correct way to upgrade the Thingy:91 firmware? I have tried via nRFCloud and nRF Desktop without any luck. In the Desktop version, the buttons are greyd for erasing and so on even when i'm connected.

Br

Tommy

[Tommy]

Ok thank you.

I have version v.3.3.0. But the Upgrade choices under "Device" is greyed out and cannot be clicked. Se picture. Is there something special i need to do with the Thingy:91 to put it in programming / Upgrade mode ?

[Håkon Alseth]

The image must be signed for mcuboot to accept it, as described here: https://infocenter.nordicsemi.com/topic/ug_thingy91/UG/thingy91/firmware_update/updating_appn_fw_9160_mcu.html?cp=12_0_4_1_0_0 

If you're updating the asset_tracker, it will be located here:

..\ncs\nrf\applications\asset_tracker\<my build folder>\zephyr\app_signed.hex.

Programmer shall then allow you to press write:

 

After its done it'll look like this:..

 

Kind regards,

Håkon

[Tommy]

Ok

Where is this folder "\ncs\nrf\applications\asset_tracker..." ? On github ?

Shouldn't i be able to click "READ" button regardless of the hex files in the "File Memory Layout" ?

And same with the "Update modem" button in the lower right corner ?

The link below is dead btw...

Håkon Alseth said:

Documentation for this sample is available here: http://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/nrf9160/serial_lte_modem/README.html#

[Håkon Alseth]

Hi,

 

Tommy said:

Where is this folder "\ncs\nrf\applications\asset_tracker..." ? On github ?

 That is a part of the code base. I would recommend that you run through "Getting Started Assistant" to setup your environment. 

 

Tommy said:

The link below is dead btw...

Are you still experiencing issues?

 

Tommy said:

Shouldn't i be able to click "READ" button regardless of the hex files in the "File Memory Layout" ?

Thingy:91 does not have a dedicated debugger, so it uses a bootloader (mcuboot) to update the application. If you have a nRF91-DK (or a Cortex M33 capable JLink SWD debugger) you can use that as a debugger to program the device.

 

Tommy said:

And same with the "Update modem" button in the lower right corner ?

 At this moment, you cannot update the modem by interfacing mcuboot.

 

Kind regards,

Håkon