Not able to program BMD300 using Jlink Segger

RE: Not able to program BMD300 using Jlink Segger

Håkon Alseth — Wed, 25 Apr 2018 08:58:02 GMT

Did you use nrfjprog from the command line? nRFgo Studio has not been updated in a while, so it might have some compatibility issues.

nrfjprog is a part of the nRF5x-Command-Line-Tools-Win32 available for download on our main website.

Best regards,

Håkon

RE: Not able to program BMD300 using Jlink Segger

Mani — Wed, 25 Apr 2018 07:47:03 GMT

With Jlink commander, there is no error message.

RE: Not able to program BMD300 using Jlink Segger

Håkon Alseth — Fri, 20 Apr 2018 06:35:17 GMT

Hi,

[quote user=""]We have tested the BMD300 module seperately by connecting SWDIO, SWCLK and RST pin[/quote]

You will need GND and VTG (VDD_NRF) connected as well, as the Segger JLink Base has level shifters to match the custom boards operating voltage.

If you open JLink Commander, does this show any error messages when connecting to the device? Also, have you tried to use nrfjprog from the command line (nrfjprog --recover for instance)?

Best regards,

Håkon

RE: Not able to program BMD300 using Jlink Segger

Mani — Thu, 19 Apr 2018 14:15:31 GMT

Hi,

I am using j-link jtag for programming the custom board. https://www.segger.com/products/debug-probes/j-link/

With this j-link segger, custom board is not detecting in nRFgo studio.

RE: Not able to program BMD300 using Jlink Segger

Håkon Alseth — Thu, 19 Apr 2018 13:02:31 GMT

Hi,

You need to power your board (3.3V) in order for most external programmers to work properly, and the "VTG" shall be connected to your VDD_NRF to ensure that the external debugger is able to detect your device.

Which programmer are you using?

If you are using a nRF5x-DK, you should connect it like this to ensure that the voltage level is equal on both sides:

https://devzone.nordicsemi.com/f/nordic-q-a/14058/external-programming-using-nrf52-dk/53757#53757

Best regards,

Håkon

RE: Not able to program BMD300 using Jlink Segger

Mani — Wed, 18 Apr 2018 11:13:57 GMT

I tried with connecting VDD from the module also, but still the board is not detected in nRFgo studio.

Anything else needs to be tried?

RE: Not able to program BMD300 using Jlink Segger

ketiljo — Fri, 06 Apr 2018 08:53:35 GMT

You need to connect VDD from the module to the Jlink as well. The Jlink needs this to detect the device and to set the logic levels correct.