MicroPython on the ESP32-D2WD (2MiB)

In case anyone else is interested, I've managed to mod the source and a partitions.csv file to get MicroPython and its filesystem working on an ESP32-D2WD, which only as 2MiB of internal Flash, not 4MiB.

Modded ports/esp32/modules/flashbdev.py, ports/esp32/modesp.c, and ports/esp32/partitions.csv

I would recommend we not hard-code things to 0x200000 anymore, as Espressif offers 2MiB internal SPI flash chips. Perhaps we rework these changes a bit to make the built process account for flash user start addresses lower than 0x200000?

Nice one!

I agree that constants hurt. I'm starting to think it's becoming more and more preferable to have board configs for ESP32. We can still use sdkconfig if we make the ESP32 port an ESP IDF component and use the KConfig system.

Then once we have a good place for them we can start moving this constants out to various configs.

See pull request #4987

I followed the process, but my NINA W102 (2MB flash) is resetting!
Can you inform me where address to burn those 3 bin files created ? (application, partition and bootloader) if i use flash tools ?

@tcpipchip

I followed the process, but my NINA W102 (2MB flash) is resetting!
Can you inform me where address to burn those 3 bin files created ? (application, partition and bootloader) if i use flash tools ?

@tcpipchip when make is run, firmware.bin will be generated. Please see the following instructions.

With the changes shown in the PR, you will need to set the env variables.

Go into the /ports/esp32 folder.
(Replace /dev/ttyUSB0 with your actual port.)

if using a makefile which imports Makefile... adjust/add the following

PORT = /dev/ttyUSB0
FLASH_MODE = dio
FLASH_FREQ = 40m
## if using a 2MiB ESP32 board
FLASH_SIZE = 2MB
FLASH_USER_START = 0x120000 # Defaults to 0x200000 address if not provided
FLASH_STORAGE_PARTITION_SIZE = 0xA0000 # 640MiB max. Defaults to 0x200000 if not provided (2MiB partition on 4MiB Flash ESP32 boards)
PART_SRC = partitions-2MiB.csv # Use the custom partitions CSV for 2MiB devices

or .envrc if using direnv

# .envrc file

export ESPIDF="$HOME/esp-idf"
export FLASH_SIZE="2MB"
export FLASH_MODE="dio"
export FLASH_FREQ="40m"
export FLASH_USER_START=0x120000
export FLASH_STORAGE_PARTITION_SIZE=0xA0000
export PART_SRC="partitions-2MiB.csv"

Run make clean then make

Before flashing, erase the flash, then flash the firmware.

esptool.py -p /dev/ttyUSB0 erase_flash
esptool.py -p /dev/ttyUSB0 write_flash -z 0x1000 build/firmware.bin

@zrecore

Thanks to the feedback @zrecore

And those 3 files
ports/esp32/modules/flashbdev.py, ports/esp32/modesp.c, and ports/esp32/partitions.csv

Still Need to modify too ?

@zrecore

Thanks to the feedback @zrecore

And those 3 files
ports/esp32/modules/flashbdev.py, ports/esp32/modesp.c, and ports/esp32/partitions.csv

Still Need to modify too ?

@tcpipchip You can see all file changes in the Pull Request, see https://github.com/micropython/micropython/pull/4987/files

@zrecore

Good Morning!!!!

Now NINA W102 is running Micropython!!!! Thanks @zrecore

You are the best!!!!!!!!!!!!!!!

Btw we ported the AT COMMANDS to 2Mb ESP32 too!

Did you do that too ?

Wow, that's excellent news! I did not add any AT commands...that may be existing code. Please note, I am in the process of working with the MicroPython community to integrate feedback, so these code changes may yet be modified further.

…

On Sat, Aug 10, 2019, 5:29 AM tcpipchip ***@***.***> wrote: Good Morning!!!! Now NINA W102 is running Micropython!!!! Thanks @zrecore <https://github.com/zrecore> You are the best!!!!!!!!!!!!!!! Btw we ported the AT COMMANDS to 2Mb ESP32 too! Did you do that too ? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#4986?email_source=notifications&email_token=AADIW3EMT3H3D64LGL6NSL3QD2YCVA5CNFSM4IJ7EQM2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD4AMSGA#issuecomment-520145176>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AADIW3AZVPXDMUWJKNKXTR3QD2YCVANCNFSM4IJ7EQMQ> .

Zrecore

Using 2mb version.Did you have problems with MQTT with certifications ?

Looks that not works!

Mine is reseting when try to open the MQTT with certifications...

Hi, the behavior of your esp32 is going well using 2mb ? Mine is very strange, sometimes not boot, or not get wifi, or not open tcp sockets

This is an untested patch.

…

On Sat, Aug 17, 2019, 3:50 PM tcpipchip ***@***.***> wrote: Hi, the behavior of your esp32 is going well using 2mb ? Mine is very strange, sometimes not boot, or not get wifi, or not open tcp sockets — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#4986?email_source=notifications&email_token=AADIW3BZWP2TZIHXKPQ5YXTQFB6DFA5CNFSM4IJ7EQM2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD4QU3AY#issuecomment-522276227>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AADIW3EZCONRMHZY33XXQRLQFB6DFANCNFSM4IJ7EQMQ> .

Yes! A lot of problems! I aborted to use it!

@tcpipchip

@tcpipchip for every issue you find, would you mind documenting:

What happened
What you expected
How to reproduce the issue

esp32: Add support for ESP32-D2WD with 2MiB internal flash.

The D2WD is now supported by the GENERIC_D2WD board, via commit 80d37d9

i will try soon to see if solve the MQTT access with 3 certifications error

with this patches now resets my NINA W102 (enter a reset loop)
can you inform me the correct sequence now to build micropython ?

I had followed this that worked good https://www.microdev.it/wp/en/2018/08/08/esp32-micropython-compiling-for-esp32/

@tcpipchip

@tcpipchip I'll do my best to help you, but please create a new GitHub issue for the problem.

esp32: Add support for ESP32-D2WD with 2MiB internal flash.

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