nRF52810 ic not recognized by segger J link

[redanb]

SWDIO,SWDCLK,VCC AND GND have been taken out from the nrf52810 ic and proper connections have been made to the jtag end of the j link device (connecting all grounds also) but the target is not recognized by the j link commander.Please guide how to program the nrf52810 ic using J link.

[awneil]

Show a full schematic of your system.

Is the target powered?

The J-Link doesn't provide power to the target.

[redanb]

Yes i supplied power 3.3v to the target ic separetely and made the grounds common too.I also connected 3.3v to the vref of the j link jtag. that is pin no.1.

                            20 PIN JTAG and their connections:

3.3------------->     pin1o o  2NOT USED

NOT USED---->       3o o4 GND

NOT USED              5 o o6GND

SWDIO-------->        7o o8GND

SWDCLK ---->         9 o o10GND

 NOT USED             11 o o12GND

 NOT USED             13 o o14GND

3.3 ------------->         15 o o16GND

 NOT USED             17  o o18GND

NOT USED              19  o o20GND

https://electronics.stackexchange.com/questions/358652/is-it-possible-to-have-5v-power-and-vtref-in-swd-programmer-for-arm

[Øyvind]

Hello, 

Can you please provide a full schematic as awneil mentions. Similar to the reference layout below:

Please see our other reference layout for nRF52810 here.

Kind regards,
Øyvind

[redanb]

We have not followed the reference layout given above ; we just took out swdio ,swdclk,vcc and gnd from the ic on the pcb so that we can use swdio and swdclk for programming by making the connections as shown above to the 20 pin jtag j link.Will it work ?

[redanb]

Will the above setup work?