boards/wemos/D32-pro add/help.

[erosenst]

Is your enhancement proposal related to a problem? Please describe.

There is missing popular esp32 board "Wemos Lolin D32 PRO". It have LiPo 500ma interface, SD-card socket, TFT-screen socket and price is not much.
Can someone help add such board .dtsi etc stuff to get it functional, atleast "hello world".?

Describe the solution you'd like

There is documentation:
https://www.wemos.cc/en/latest/d32/d32_pro.html
(I have N16R8 versions on my desk.. )

Maybe someone with more experience can copy/paste from some esp32 boards suitable lines.?

Describe alternatives you've considered

Additional context

I like to get stereo microphone recorder with .mp3 encoder to sd-card & BT-audio to mobile & BT-tty-console for small shell to modify configs. Someone added ulisp to zephyr, like to get functional too, shell with .nix screen interface for multi tty..
Maybe 1/s 5MP action camera to get .jpgs in sd-card later todo..

What is status of riscv cpu support in esp32 devices, it is third cpu-core for sleep and is low power, but control ADC and I2C pins.

There is grbl (cnc / g-code) port to zephyr like to get it functional too. 6-axle cnc machine / moving robot cnc-tool nice to get..

Thank you

Edit1: Any support for u-boot pxe boot for esp32 boards.? remote firmware updates and fast flash, only bootloader and then rest from wlan & dhcp..

Edit2: Oh, small mixer and noise reducer & automatic start/stop record based volume level, better to if keywords, but maybe button / switch can do also / easier..

Edit3: Zephyr total missing analog qwerty keyboard support.? 2-ADC lines and 2-IO lines total 4-pins for 100 buttons (depends resistor network), where is driver.? And and one trimmer every ADC line to support XY pointer in screen..

[erosenst]

Hmm, how well it works if copy esp32-wrover-kit dir to wemos-lolin32d-pro and what files should modify to support:

• sd-card
• tft (camera.?)

I like to get ADC to work continous mode and do good quality samples, so fast conversion (ADC up to 2Mhz.?) and generate some level=(level+(99*level))/100 average to kill hiss/pops etc from record level.
I looked esp32 TRM and there is some registers to do work to multiplex 16 or something analog input to ADC1. Stereo record work can maybe do with only ADC1 and leave ADC2 for wlan.
Is there supported ADC1 codes to put free running conversion with about 2Mhz ADC and averaging sum/divide DMA code for dual channel capture (maybe someone want 5.1 or some hifi too, but out of my scope, I need stereo action camera helmet with studio quality records to SD-card .mp3 & BT-audio & etc. Maybe I2C screen (128x64) and qwerty analog keyboard to use some shell & .nix screen program for virtual tty's. Maybe uLisp application to use in shell. For camera maybe OpenCV lib, linked to lisp (hmm.?). If OpenCV, then camera lens adjust stepmotor with blur-detect (seems quite simple motor drive data: nabla & fft2), camera X-Y-servos or step motors to track motion, face regonizition with gps&datetime to sqlite etc.? Some AI.?

All motors drive with g-code and run grbl real time part in riscv coprosessor in esp32 energy save sleep level. ADC1 and I2C is used with riscv coprosessor, how much asm can fit it.? Keyboard, screen, ADC-stereo-capture.? GRBL-parts to run step-motors.? There is 16KB rtc-fast ram and 16KB rtc-slow ram whatever it means.? Maybe some bank part to use transfer buffers to sx6-cores.? and rest to running asm-block.?
Need to get more data about riscv part of that (price) nice chip..

Thank you for reading..

How much it