I just finished a homemade PCB with a LPC4088 microcontroller and some other components. When I connected my board to the J-link EDU probe over JTAG connector and start Jlink Commander, Cortex-M4 microprocessor inside LPC4088 isn't found like microprocessor is found in this video.

If everything was correct J-link Commander should find the Cortex-M4 microcontroller so I assume that I made mistake when I was designing the schematics.

I doubt that I made mistake with a power section of the board. The mistake is probably part of JTAG connections which I am quite new to. Yoou might want to open the image in new tab and zoom in in order to better see the schematics.

This is my first MCU board and I really have to make it work...

enter image description here

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    \$\begingroup\$ Did you try connecting via SWD? That would use only two lines. Also, try measuring the +3,3V voltage. \$\endgroup\$ – Turbo J Apr 28 '17 at 17:46
  • \$\begingroup\$ I see. So SWD is less error exposed... \$\endgroup\$ – 71GA Apr 28 '17 at 19:18

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