Search results for:

I had the same problem when using the app.hex file. However using the procedure as mentioned above it works very well. Short the RST to GND 2x and the drive appears. Unplug and plug the device, the drive disappears and Espruino is active. Real super!!! Many thx to @fanoush for his nicenano.py file and his suggestions for using the app_hex file

I believe it went well and I can still use the UF2-disk after the double reset:

uf2conv.py -i espruino_2v25.13_nano.app_hex.uf2
--- UF2 File Header Info ---
Family ID is NRF52840, hex value is 0xada52840
Target Address is 0x00026000
All block flag values consistent, 0x2000

I have bought already a couple of these devices: https://www.aliexpress.com/item/1005008144734921.html
and am using for temperature/humidity measurement. Works fine.

This INFO_UF2.txt of Nicenao-disk:
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

I assume, that I can do the following:
python uf2conv.py espruino_2v25.13_nano.app_hex --family 0xADA52840 --convert --output espruino_2v25.13_nano.app_hex.uf2

I have built the promicro. Hex-file according:
make clean && BOARD=PROMICRO RELEASE=1 make
Then build the promicro.uf2 file:
uf2conv.py espruino_2v25.13_promicro.hex -b 0x26000 --family 0xADA52840 --convert --output espruino_2v25.13_promicro.uf2

Checking the file with uf2conv.py -i espruino_2v25.13_promicro.uf2 results in error:

Traceback (most recent call last):
File "C:\Users\louis\projecten\espruino\Espruino\bin\uf2conv.py", line 361, in

main()

File "C:\Users\louis\projecten\espruino\Espruino\bin\uf2conv.py", line 329, in main

convert_from_uf2(inpbuf)

File "C:\Users\louis\projecten\espruino\Espruino\bin\uf2conv.py", line 71, in convert_from_uf2

assert False, "More than 10M of padding needed at " + ptr
              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~

TypeError: can only concatenate str (not "int") to str

When I do the same procedure for the NRF52840DK.py, then everything goes well

Do you have a PROMICRO/SUPERMINI.py board version for this board?

The ESP32 is used in nearly in all smart bulbs/switches etc (- Tuya, Calex, Philips Wiz etc.). If you want to make a busines case, try to approach these companies, that sell the ESP32 within their appliances. Esspresif will sell anyway, despite what sw platform is used.