I have a RAK8211-NB and J-LINK emulator both from RAK.
I tried to follow the guides to use Arduino IDE and flash the NORDIC52832 both with J-LINK and the UART to serial adapter provided, without success.
The schematics provided seems different from what I can see in the device I own (eg. pinout on the device P1-P4 seems to be inverted).
Can you provide detail information on how to proceed to flash the device and also instructions about the wiring with J-LINK and the breakout USB-UART board? What about the jumpers you provided in the package?
Are they necessary to flash the device?
I would like to start with a simple example and then I would like to try to send AT commands to the BC95-G.
Can anyone help?
Yes, these jumpers are quite intriguing. I would also like to know if they should be used for something.
Regarding the J-link wiring, just connnect VDD, SWDIO, SWCLK, AND GND to the respecive pins on your adapter board (eg. in my board I have a connector named JP7 which has VDREF, SWDIO, SWCLK and GND pins).
I have also unsuccessfullly tried to flash softdevice using Arduino IDE. RAK's documentation is not very in depth...
What I was able to do is to program the board using Segger Studio (the recommended IDE from Nordic Semi). Just follow the guide in Nordic's site [https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk52.v0.9.1%2Fgroup__nrf__drv__spi__master.html](link url) and let me know if you have any doubts.
Also, you can use nrfgo studio to flash softdevice and program into the chip