i2s compatibility

[Mike Teachman]

Hi,

Are you using the MicroPython interface for ESP-ADF?
https://github.com/espressif/esp-adf/tr ... python_adf

This MicroPython work by Espressif is new to me. The commit history in github for this work starts in October 2019. Quite recent activity.

Option 2:
you can use the I2S pull request to send/receive audio samples to/from the ES8388 codec chip on the LyraT boards. But, you will first need a MicroPython driver to control the ES8388 codec using an I2C interface. I took a look at the ES8388 datasheet -- it has over 50 programming registers. That suggests it will be a challenging driver to write (although Espressif has already done this work in C code).

Wow - I'm quite impressed with the work done by Espressif on the ESP-ADF. It is open source MIT licence. Lots to learn from this work, with potential integration into MicroPython I2S. For example, they already support MP3 decoding.
https://github.com/espressif/esp-adf

[janchri]

Yes the effort espressif is putting into the development is quite nice. However, I am and never will be quite a good c/c++ programmer. When I found your lib, I was hoping to swap towards uPy. This would be actual fantastic as then my whole workflow would be Python The uPy work done by Espressif, is not really working for me. Maybe I need to wait for some more commits and updates. Thank you anyway for your time and effort!

[zaord]

Hi, Is it possible to use I2S with stm32 ports board luike Pyboard ?
It is not a defaut machine routine !
How to compile that on PYB11?

Thanks

[Mike Teachman]

Hi, Is it possible to use I2S with stm32 ports board luike Pyboard ?

At the moment, I2S is supported only for the ESP32, using this PR:
https://github.com/micropython/micropython/pull/4471

these docs describe how to use the PR
https://github.com/miketeachman/micropy ... s-examples

Work has started to support I2S on the pyboards, and possibly the ESP8266. I'll update the forum when there is progress to report.

[zaord]

Do you think is a question of weeks, months or year ?
It's just for knowing if I move to esp or not.

Thanks a lot for all the works you did !
That's wonderfull !

All the lights for you

[zaord]

Just a technical question, how can I use a Pull request on github to update my micropython local folder ? I suppose there is a special git command, or should I download a zip copy of this micropython branch ?

[jimmo]

Just a technical question, how can I use a Pull request on github to update my micropython local folder ? I suppose there is a special git command, or should I download a zip copy of this micropython branch ?

Two ways - you can either add the source repository (i.e. where the PR was sent from) as a "git remote", which then allows you to access the branches, or you can use a special ref from github.

i.e. when I send a PR it comes from my repo github.com/jimmo/micropython (and you can see the branch name at the top of the PR page -- e.g. this PR https://github.com/micropython/micropython/pull/5964 comes from the "libmicropython-port" branch).

I typically do this for frequent contributors where I'm likely to look at their other work in the future.

The much easier option is to do:

Code: Select all

git fetch origin pull/ID/head:BRANCHNAME

(assuming "origin" is your remote for micropython/micropython)

More info at https://help.github.com/en/github/colla ... ts-locally

[Mike Teachman]

Do you think is a question of weeks, months or year ?

My ambition is to have the I2S PR updated to include the pyboard v1.1 and pyboard-D in 2-3 months.

How do you want to use I2S on the pyboards? e.g. audio out to an amplifier? or, audio in with a microphone?

[zaord]

I an an enginner and luthier and I need to develop for that for a micropython aided tuning tool
So I have plenty of sensor (flowmeter, barometric sensor, IR sensor, mostly in I2C, and also a I2S microphone.

This will be mixed with FFT / intermodulations pitch measuring algoruthm and a TFT screen. I am using some of those powerful STM32H7 processor but I will maybe try a prototype with esp32.

[zaord]

Hi Mike !

I am always interested By I2S port for Pyboard
Thanks a lot for you work !
Please let me know when you will have finish !

Thanks