Hello,
I have an ItsyBitsy nrf52840 Express board and would like to flash the SOC directly. Therefore, I connected my J-link EDU mini to the soldered pad and VT-ref to the 3.3V pin of the board but when I tried to connect to the SOC (with J-link commander or with nRF Command Line Tools) It says that it "cannot connect to target". Could you please help me find a solution?
Trying to flash ItsyBitsy nrf52840 Express
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- adafruit_support_carter
- Posts: 29168
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Trying to flash ItsyBitsy nrf52840 Express
Are you powering the Itsy separately? The JLink does not power the board through the 3.3V pin.
- Lumann
- Posts: 3
- Joined: Mon Dec 05, 2022 7:26 am
Re: Trying to flash ItsyBitsy nrf52840 Express
Thank you for your fast answer,
Yes, I'm powering it separately through the BAT and GND pins with a 3.3V voltage.
Yes, I'm powering it separately through the BAT and GND pins with a 3.3V voltage.
- adafruit_support_carter
- Posts: 29168
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Trying to flash ItsyBitsy nrf52840 Express
Could be a connection issue. Post photos of the soldering job to the pads and how the JLink is being connected.
- Lumann
- Posts: 3
- Joined: Mon Dec 05, 2022 7:26 am
Re: Trying to flash ItsyBitsy nrf52840 Express
Sure here they are.
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