Program nrf51822 using J-Link Cortex M

[Mohib]

I have got a nrf51822 ek. I wish to program it using Jlink Cortex M( Picture below). Any sort of help will be appreciable ..!

[Stefan Birnir Sverrisson]

Hi

To program the Evaluation kit you only need to connect four pins: power,ground, SWDIO and SWDCLK. You can see how to connect to the 4 pins for the beacon kit, and for the nRF51 DK and nRF51822 DK. For connection to the beacon kit, Red is power (3.3V), black is ground, green is SWDIO and blue is SWDCLK.

The problem is however on the evaluation kit, the SWDIO and SWDCLK pins are not connected to any header on the board, so you will have to solder wires to the board in order to access those pins. You can look at the EK hardware files in order to know where to connect to those two pins. Figure 2 in nRF51822_PS v3.1 shows that SWDIO is pin 23 and SWDCLK is pin 24. You can also see in figure 10 in the nRF51822 Evaluation Kit User Guide v1.2 that SWDIO and SWDCLK are routed to COM1 and COM2 of the STG3684A chip on the EK board so you could connect to the two pins there, or directly on the nRF51822 chip.