Programming SuperMini via NRF52 DK - Could not read a coherent value from ctrl-ap idr registers

RE: Programming SuperMini via NRF52 DK - Could not read a coherent value from ctrl-ap idr registers

Leschge — Fri, 13 Jun 2025 22:22:52 GMT

using NRF connect you can flash the board via SWDIO pads. You need to connect the SuperMini to a NR dev board.

RE: Programming SuperMini via NRF52 DK - Could not read a coherent value from ctrl-ap idr registers

luyicheng — Wed, 28 May 2025 14:52:34 GMT

你好！您使用的是 Nice！nano v2 兼容板，还是 ProMicro（以前称为 Supermini）？我还有一个相同的开发板。前几天，我尝试使用 Arduino 进行编程，不小心点击了 Arduino 软件上的“Burn Bootloader”选项。从那时起，开发板就无法再被识别为 USB 闪存驱动器，甚至 Windows 设备管理器也无法检测到它的存在。我尝试短接 RST 和 GND 引脚，但设备管理器或微控制器上的 LED 都没有响应。现在，开机时，蓝色 LED 会一直闪烁。我怀疑 bootloader 已损坏。您能告诉我如何解决吗？

RE: Programming SuperMini via NRF52 DK - Could not read a coherent value from ctrl-ap idr registers

Leschge — Thu, 12 Dec 2024 19:12:01 GMT

I was also able to get UART pass through by connecting PIN 0.6 from SuperMini to PIN 0.6 from the NRF52 DK. (No changes made to UART in the overlay)

RE: Programming SuperMini via NRF52 DK - Could not read a coherent value from ctrl-ap idr registers

Leschge — Sun, 01 Sep 2024 17:54:11 GMT

So I got it working. It's important to use the VDD pin of the SuperMini instead of the VCC if SWDIO is used.
Also MCUBoot seems to be flashed as well, but still not sure if its one or two images/partitions.

One strange thing I noticed: I cannot use the UART pass through on PIN 0.6 / 0.8 of the DK (I tested both, connect TX of SuperMini to DK TX and RX). But what was working is using an Arduino as Serial plotter of the SuperMini.