My custom board based DA14682 . voltages are ok. But there is not detect on Smartsnippets. I using VDD, GND, SWD CLK ,SWDIO lines.
What to check?
I suppose that you are using the L-Link lite ARM interface, as you mentioned that you are using the SWCLK and SWDIO line and DA14682 chip (you tagged the DA14580 chip, but your post you mentioned the DA14682). Could you please clarify if you installed the J-Link drivers into the Smart Snippets?
Thank you for prompt reply. Yes design based on DA14682. It seems to be oscillator not working. Voltages is not derived by clock, right?
JLink driver is ok.
Yes, you are right, voltages are not delivered by the clock. Please, check all the power lines of the chip, and try to fix the issue with the crystal oscillator. If the 16MHz crystal oscillator does not working, this means that the chip is not working, so you are not able to detect the JTAG. If you found any of the above answers useful please mark one of them as accepted.