Flashing nRF9160 on a custom board with FTDI UART converter or nRF5340DK?

[Pinestudio]

Hi! I'm working on a custom board with nRF9160, I want to flash it with the asset tracker sample, however, I do not own a J-link device. What I have is a FTDI USB-UART converter, a nRF5340DK board, a ST-Link v2 programmer. Can I use any of these to flash my nRF9160 with the sample?

I have following pins exposed on my board:

• 3V3
• SWDIO (Pin 34)
• SWCLK (Pin 33)
• RESET (Pin 32)
• UART RX (Pin 2)
• UART TX (Pin 3)
• Pin 20
• GND

I don't have any fancy connectors, such as these on nRF5340DK, just plain and simple jumper wires. Can I flash my nRF9160 with my current setup?

[Stian Røed Hafskjold]

Hi, you can use the nRF5340 DK and the P20 header (placed next to the power source switch). You need to connect,

• VTG -> 3V3
• GND DETECT -> GND
• SWDIO -> SWDIO
• SWDCLK -> SWDCLK

using jumper wires.

No fancy cables needed.