Which hexfile do i have to install for LTE ?

[chris97]

Hi,

which hex file shall i install for an LTE application ? 

It is basically step 7 of this tutorial: infocenter.nordicsemi.com/index.jsp

I wanna have a LTE application and the HEX files are not really meaningful ... 

[Robin M Saltnes]

Hey Chris 

Hex-files are pre-compiled firmware packages designed to be flashed directly to a chip. The contents of a hex-file is therefore not readable for human eyes, as the code is already compiled into machine language. What hex-file you should choose depends on what application you're trying to run and which network protocol the carrier has coverage in your area. If for example you're trying to run the asset tracker application and you're in a location where iBasis, our partner carrier, has coverage for LTE-M you choose the hex-file named "nrf9160dk_asset_tracker_ltem_2020...". Here's the iBasis coverage map.

Important note: if you're trying to flash the firmware through mcu boot mode you have to choose the hex-file from the folder named "images_dfu_hex". 

Best regards, 

Robin 

[chris97]

Oh ok ...

im really new to this whole topic so i have to get used to all those new things like mcu, LTE etc. 

I would like to create a simple software which is able to send a integer like 42 to a server or cloud, where i can collect the numbers, just for an example 

am i on the right way with the nRF9160 DK ? 

[Robin M Saltnes]

Yes, the nRF9160 DK would absolutely be suitable for this. I would suggest you look into MQTT and possibly try out our MQTT_simple sample firmware. 

You can compile and upload the mqtt_simple sample on to the nRF9160 and have a MQTT client on a computer that subscribes to the topic the device publishes to, there are publicly hosted MQTT brokers that can be used for testing. 

Best regards 

Robin