Add build script for ESP32

[A622266]

Can you consider to build a ulab firmware for ESP32 and ESP32-S3?

The boards I have are: ESP32_DevkitC_V4 ESP32-S3-DevkitM-1 v1.0

I'm following the directions to do this myself as well, but I am stuck on the final step of creating and running the make file. For either of the above boards, can you elaborate on how to create the make file? The part of the document I am trying to work through is here:

[v923z]

Can you consider to build a ulab firmware for ESP32 and ESP32-S3?

Yes, absolutely.

The boards I have are: ESP32_DevkitC_V4 ESP32-S3-DevkitM-1 v1.0

I'm following the directions to do this myself as well, but I am stuck on the final step of creating and running the make file. For either of the above boards, can you elaborate on how to create the make file?

Simply open a text editor, add

BOARD = GENERIC
USER_C_MODULES = $(BUILD_DIR)/ulab/code/micropython.cmake

include Makefile

and save it under ULAB_MICROPYTHON/micropython/ports/eps32/makefile, where ULAB_MICROPYTHON is the folder, where you have micropython, and ulab side by side.

[A622266]

I created the file at ./ULAB_MICROPYTHON/micropython/ports/esp32/makefile, and added the 3 lines listed above as the contents to the file makefile. I note among the many .c and .h files and other file types in the esp32 directory, there is another file called MakeFile While in the esp32 directory, I run the command make . But my output is: make: Nothing to be done for '.'.

Any idea what I am doing wrong?

Also, how to distinguish the firmware for my esp32 versus my esp32s3? I assume BOARD=GENERIC does something that should work with most esp32,but is there way to make it more specific (not sure I really need that, but to know how it is possible might help me to better understand the build process)

On Mon, Oct 3, 2022 at 4:26 AM Zoltán Vörös @.***> wrote:

Can you consider to build a ulab firmware for ESP32 and ESP32-S3?

Yes, absolutely.

The boards I have are: ESP32_DevkitC_V4 ESP32-S3-DevkitM-1 v1.0

I'm following the directions to do this myself as well, but I am stuck on the final step of creating and running the make file. For either of the above boards, can you elaborate on how to create the make file?

Simply open a text editor, add

BOARD = GENERIC USER_C_MODULES = $(BUILD_DIR)/ulab/code/micropython.cmake

include Makefile

and save it under ULAB_MICROPYTHON/micropython/ports/eps32/makefile, where ULAB_MICROPYTHON is the folder, where you have micropython, and ulab side by side.

— Reply to this email directly, view it on GitHub https://github.com/v923z/micropython-builder/issues/4#issuecomment-1265103506, or unsubscribe https://github.com/notifications/unsubscribe-auth/AGH5SSRT45ACTX7YRC326KLWBKKDTANCNFSM6AAAAAAQ3D4S4Y . You are receiving this because you authored the thread.Message ID: @.***>

[v923z]

I created the file at ./ULAB_MICROPYTHON/micropython/ports/esp32/makefile, and added the 3 lines listed above as the

Here you need a directory name, not ULAB_MICROPYTHON. You should substitute here the name of your directory. So, e.g., in my case I have

artifacts  micropython  micropython-lib ulab

in a directory called

/home/v923z/sandbox/test

so you would create

/home/v923z/sandbox/test/micropython/ports/esp32/makefile

Basically,

/home/v923z/sandbox/test

is the directory, where you cloned both micropython and ulab.

I hope this helps.

[A622266]

Yes I started over again and this time I completed the build process. My error in the last step was executing 'make .' instead of 'make' (note period). Oops!

I used BOARD=GENERIC_S3 in the makefile, since my ESP32 is an S3 model, and the build completed without error.

Now I am trying to flash the board over the USB at port /dev/ttyACM0, which I have confirmed to be the correct port. I am using the command: idf.py -p /dev/ttyACM0 flash Unfortunately I got an error: No serial data received.
Maybe this isn't something you can help with, but if you have an idea, I would be glad to know.

[A622266]

One thing I see is that the esptool.py version used automatically for the flash process is esptool.py v3.2-dev. The latest esptool.py version is 4.3. Do you think this should be updated? The reason I am confident that the port and physical hardware connection is correct is that I can still run 'mpremote a0' and connect to the esp32s3.

[A622266]

I was able to establish the connection with the S3. It was a hardware issue. However, I could not successfully flash the device. Following make, the created executable command fails, objecting that the board is an S3. This may be because the S3 is flashed from memory 0x0, whereas older esp32 boards are flashed from 0x1000? Please let me know if it is possible to build ulab with micropython for the S3.

Separately, I was able to build the project successfully and flash the other ESP32 board that I have (not an S3). So I can use ulab on that for now!

[v923z]

You might have to edit the partition table: https://github.com/v923z/micropython-ulab/#what-to-do-if-the-firmware-is-too-large

[A622266]

Yes there are few things that I believe must be changed. I haven't found the right list or combination yet. But I think there at least these three: 1) IDF tools version has to be at least v4.4.
2) In makefile, BOARD should be set equal to GENERIC_S3. I don't think this also has to be set in Makefile, but perhaps it does. 3) Flash should start from location 0x0 rather than 0x1000, which differs from other ESP devices. You hint about the partition relates to this.

There may need to be something else to let the idf.py tool know that the target is an esp32s3 and not an esp32. I just notice in some of the messages during the build process that an esp32 is assumed as the default.

[A622266]

I succeeded in building ulab for my esp32 S3.
1) I used IDF tools version v4.4.
2) In makefile, BOARD should be set equal to GENERIC_S3.

I did not have to make any other changes.

[v923z]

Great! Would you mind adding your build script here?

[A622266]

Build script for ESP32 S3 First, clone the ulab, the micropython, as well as the espressif repositories:

export BUILD_DIR=$(pwd)

git clone https://github.com/v923z/micropython-ulab.git ulab
git clone https://github.com/micropython/micropython.git

cd $BUILD_DIR/micropython/

git clone -b v4.4 --recursive https://github.com/espressif/esp-idf.git

Then install the ESP-IDF tools:

cd esp-idf
./install.sh
. ./export.sh

Next, build the micropython cross-compiler, and the ESP sub-modules:

cd $BUILD_DIR/micropython/mpy-cross
make
cd $BUILD_DIR/micropython/ports/esp32
make submodules

At this point, all requirements are installed and built. We can now compile the firmware with ulab. In $BUILD_DIR/micropython/ports/esp32 create a makefile with the following content:

BOARD = GENERIC_S3
USER_C_MODULES = $(BUILD_DIR)/ulab/code/micropython.cmake

include Makefile

Now you can run make.