Migrating to M5 Cardputer

[Kabron287]

Hello, I made changes in platformio.ini and in Application.cpp(GPIO_TRANSMIT_BUTTON 0 and active LOW, I2S pins also redefined) to work with m5stack-stamps3: [env:m5stack-stamps3] board = m5stack-stamps3 platform = espressif32 build_flags = -Ofast -D USE_I2S_MIC_INPUT -D USE_ESP_NOW lib_ignore = indicator_led_pico

in platformio_override.example.ini:

[env:esp32dev] ;;board = esp32dev board = m5stack-stamps3 build_flags = -Ofast -D USE_ESP_NOW -D USE_I2S_MIC_INPUT

Compilation OK but serial out only:

ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x15 (USB_UART_CHIP_RESET),boot:0x2b (SPI_FAST_FLASH_BOOT)
Saved PC:0x4202173e
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0x44c
load:0x403c9700,len:0xbe4
load:0x403cc700,len:0x2a68
entry 0x403c98d4

and nothing more. What else have I change to?

[Kabron287]

I have some progress: noise on one unit while transmit on another one.

Definitelly something wrong with mic settings:

define I2S_MIC_CHANNEL I2S_CHANNEL_FMT_ONLY_LEFT

define I2S_MIC_SERIAL_CLOCK 43

define I2S_MIC_LEFT_RIGHT_CLOCK -1

define I2S_MIC_SERIAL_DATA 46

i tested all other possible I2S_MIC_CHANNEL values with no success.

What else could be done for SPM1423HM4H-B mic?

[FedericoBusero]

I want to test S3 next week, you can test

platform = espressif32@6.3.1 Or platform = espressif32@3.4.0

I made some i2s test programs for s3 already, on https://github.com/Fri3dCamp/badge_2024_arduino/tree/main/examples/platformio%20basic%20examples

Also check the open pull request, which is also for S3

[Kabron287]

Well, I did it. BUT, there are nuances.

1. SPM1423 mic used PDM coding. After makig corresponding correction in config.h and config.cpp, sound did not appeared and I did not realize why. So, to make it work I have to use mic part of M5Cardputer library. Now it works fine.
2. Code, compiled with platformio won't work at all, so, I have to adapt it for Arduino. With these synthetic modification I got it work.