The J-Link requires a wire to ensure the target has power. In the image above, red is target power (3.3V), black is ground, green is SWDCLK, and blue is SWDIO.
The J-Link requires a wire to ensure the target has power. In the image above, red is target power (3.3V), black is ground, green is SWDCLK, and blue is SWDIO.