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JLINKk programming header w/ tag connect

andrew sauter

Hello,

We want to use the J-Link Needle Adapter for nRF51822

The attached (capture.jpg) is the pinout from the J-Link Needle Adapter datasheet.

the attached (capture2.jpg) is how I intend to connect.

questios:

  1. do I connect the nReset to pin10 (also SWDIO)?
  2. does SWCLK need 100k pull down (I read elsewhere from JLINK)?
  3. should I power board during programming? operate at 2.5V?

www.segger.com/jlink-needle-adapter.html

will this be able to program OTA?

thanks,

Capture.JPG

Capture2.JPG

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    Hi Andrew,

    Christopher is correct. nReset is not needed. 12k (10k is OK) pull down needed.

    If you use Segger Jlink Lite programmer, you would need to provide 3.3V input voltage for the board. And yes you need to power the board when programming.

    Device firmware update over the air will be released in the next SDK (v4.4) which is scheduled for this week. Note that it's firmware update, not programming, so you need to flash the BLE stack and bootloader for the first time using SWD.

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  • 0

    Hi Andrew,

    Christopher is correct. nReset is not needed. 12k (10k is OK) pull down needed.

    If you use Segger Jlink Lite programmer, you would need to provide 3.3V input voltage for the board. And yes you need to power the board when programming.

    Device firmware update over the air will be released in the next SDK (v4.4) which is scheduled for this week. Note that it's firmware update, not programming, so you need to flash the BLE stack and bootloader for the first time using SWD.

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