Impossible burn the uf2 Files to supermini /nicenano

[disc0018]

I burned the newest bootloader first.
Then I tried to copy the uf2 File to the usb device.
Nothing happens the device stays in the Bootloader mode.
If I try for testing the circuit python uf2 with the same device. Everything works fine.

[jkorte-dev]

@disc0018 what kind of board do you use? nice naco comes which suitable bootloader preinstalled. what version of bootloader did you install? there is an info file in the UF2 device folder which contains all relevant info.

[disc0018]

the info_uf2.txt says UF2 Bootloader 1.0.0 lib/nrfx (v2.0.0) lib/tinyusb (0.12.0-145-g9775e7691) lib/uf2 (remotes/origin/configupdate-9-gadbb8c7) Model: SuperMini Board-ID: nRF52840-SuperMini-v0 Date: Sep 12 2024 SoftDevice: S140 7.3.0 Am Do., 27. März 2025 um 08:51 Uhr schrieb jkorte-dev < ***@***.***>:

…

@disc0018 <https://github.com/disc0018> what kind of board do you use? nice naco comes which suitable bootloader preinstalled. what version of bootloader did you install? there is an info file in the UF2 device folder which contains all relevant info. — Reply to this email directly, view it on GitHub <#1 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMOKCRPBYLAD3AWGSAKTCZ32WONXZAVCNFSM6AAAAABZ3N5YDSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDONJXGA2DKOBWHE> . You are receiving this because you were mentioned.Message ID: ***@***.***> [image: jkorte-dev]*jkorte-dev* left a comment (jkorte-dev/micropython-board-NRF52840#1) <#1 (comment)> @disc0018 <https://github.com/disc0018> what kind of board do you use? nice naco comes which suitable bootloader preinstalled. what version of bootloader did you install? there is an info file in the UF2 device folder which contains all relevant info. — Reply to this email directly, view it on GitHub <#1 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMOKCRPBYLAD3AWGSAKTCZ32WONXZAVCNFSM6AAAAABZ3N5YDSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDONJXGA2DKOBWHE> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[jkorte-dev]

Your bootloader uses SoftDevice: S140 7.3.0 which is not compatible to the build due to different offset. See https://github.com/adafruit/Adafruit_nRF52_Bootloader/blob/master/README.md.
You either have to install a bootloader with Softdevice v6 or you can try the official Micropython Build for the Xiao NRF52840 board.

btw the info file of my borad slooks like this:

UF2 Bootloader 0.6.0 lib/nrfx (v2.0.0) lib/tinyusb (0.10.1-41-gdf0cda2d) lib/uf2 (remotes/origin/configupdate-9-gadbb8c7)
Model: nice!nano
Board-ID: nRF52840-nicenano
SoftDevice: S140 version 6.1.1
Date: Jun 19 2021

[disc0018]

Your right that the problem. The different offset. The build for the xiao-ble is working. I am trying SD v6. At the moment I try to compile micropython based on zephyr. Zephyr has a promicro nrf52840 board config. And a config for nice-nano and supermini can be "easily" created or taken from the zmk project. The newest zephyr build has problems to compile micropython. So I have to use the adviced version. Perhaps you can help with this approach because I am new to micropython and zephyr. jkorte-dev ***@***.***> schrieb am Di., 1. Apr. 2025, 09:16:

…

Your bootloader uses SoftDevice: S140 7.3.0 which is not compatible to the build due to different offset. See https://github.com/adafruit/Adafruit_nRF52_Bootloader/blob/master/README.md . You either have to install a bootloader with Softdevice v6 or you can try the official Micropython Build for the Xiao NRF52840 board. — Reply to this email directly, view it on GitHub <#1 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMOKCRKW7FW567BDCWBK6OL2XI4OHAVCNFSM6AAAAABZ3N5YDSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDONRYGQYTCOBWGY> . You are receiving this because you were mentioned.Message ID: ***@***.***> [image: jkorte-dev]*jkorte-dev* left a comment (jkorte-dev/micropython-board-NRF52840#1) <#1 (comment)> Your bootloader uses SoftDevice: S140 7.3.0 which is not compatible to the build due to different offset. See https://github.com/adafruit/Adafruit_nRF52_Bootloader/blob/master/README.md . You either have to install a bootloader with Softdevice v6 or you can try the official Micropython Build for the Xiao NRF52840 board. — Reply to this email directly, view it on GitHub <#1 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMOKCRKW7FW567BDCWBK6OL2XI4OHAVCNFSM6AAAAABZ3N5YDSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDONRYGQYTCOBWGY> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[disc0018]

I flashed the xio_ble bootloader to my promicro board. Then I build micropython on zephyr for the xio_ble board. The mapping of the pins is not correct of course. But it works. I have problems to config the board correctly in zephyr. I have the boards definition from the zmk project. But don't know how to include them in zephyr. jkorte-dev ***@***.***> schrieb am Di., 1. Apr. 2025, 09:16:

…

Your bootloader uses SoftDevice: S140 7.3.0 which is not compatible to the build due to different offset. See https://github.com/adafruit/Adafruit_nRF52_Bootloader/blob/master/README.md . You either have to install a bootloader with Softdevice v6 or you can try the official Micropython Build for the Xiao NRF52840 board. — Reply to this email directly, view it on GitHub <#1 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMOKCRKW7FW567BDCWBK6OL2XI4OHAVCNFSM6AAAAABZ3N5YDSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDONRYGQYTCOBWGY> . You are receiving this because you were mentioned.Message ID: ***@***.***> [image: jkorte-dev]*jkorte-dev* left a comment (jkorte-dev/micropython-board-NRF52840#1) <#1 (comment)> Your bootloader uses SoftDevice: S140 7.3.0 which is not compatible to the build due to different offset. See https://github.com/adafruit/Adafruit_nRF52_Bootloader/blob/master/README.md . You either have to install a bootloader with Softdevice v6 or you can try the official Micropython Build for the Xiao NRF52840 board. — Reply to this email directly, view it on GitHub <#1 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMOKCRKW7FW567BDCWBK6OL2XI4OHAVCNFSM6AAAAABZ3N5YDSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDONRYGQYTCOBWGY> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[jkorte-dev]

Unfortunately I have no experience with the zephyr port but if the xiao build works, the easiest way in my opinion is to start with the xiao board definition and replace pins.csv with the version from this repo. This should fix the wrong pin mappings.

if this works you can proceed with fixing LED , UART and SPI config (one by one):

#define MICROPY_HW_LED_COUNT (1)
#define MICROPY_HW_LED1 (15) // remove LED2 - LED4
#define HELP_TEXT_BOARD_LED "1"

#define MICROPY_HW_UART1_RX (8)
#define MICROPY_HW_UART1_TX (6)

#define MICROPY_HW_SPI0_MOSI (10)
#define MICROPY_HW_SPI0_MISO (32 + 11)

[jkorte-dev]

Or even easier use the board definition from this repo . change im mpconfigboard.mk

SOFTDEV_VERSION = 6.1.1

to

SOFTDEV_VERSION = 7.3.0

and compile

in the last build step an offset of 0x27000 should be reported.

[disc0018]

This solution helped. I recompiled with SD 7.3.0 jkorte-dev ***@***.***> schrieb am Mi., 2. Apr. 2025, 07:48:

…

Or even easier used the board definition from this repo . change im mpconfigboard.mk SOFTDEV_VERSION = 6.1.1 to SOFTDEV_VERSION = 7.3.0 and compile in the last build step an offset of 0x2700 should be reported. — Reply to this email directly, view it on GitHub <#1 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMOKCROGYXZ7N7FJEPZFKKL2XN227AVCNFSM6AAAAABZ3N5YDSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDONZRGQYDAOBQHA> . You are receiving this because you were mentioned.Message ID: ***@***.***> [image: jkorte-dev]*jkorte-dev* left a comment (jkorte-dev/micropython-board-NRF52840#1) <#1 (comment)> Or even easier used the board definition from this repo . change im mpconfigboard.mk SOFTDEV_VERSION = 6.1.1 to SOFTDEV_VERSION = 7.3.0 and compile in the last build step an offset of 0x2700 should be reported. — Reply to this email directly, view it on GitHub <#1 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMOKCROGYXZ7N7FJEPZFKKL2XN227AVCNFSM6AAAAABZ3N5YDSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDONZRGQYDAOBQHA> . You are receiving this because you were mentioned.Message ID: ***@***.***>