Espd

How to setup and use pure data on the esp32 lyrat audio dev board

Installation from scratch

install espressif audio development kit

 git clone --recursive https://github.com/espressif/esp-adf.git
 cd esp-adf
 ./install.sh
 . ./export.sh

put an alias in .zshrc/.bashrc to source adf toolchain later

 alias get_adf='. $HOME/esp/esp-adf/export.sh'

checkout puredata (inside the espd folder) and apply patches

 cd espd
 git clone https://github.com/pure-data/pure-data.git pd
 cd pd
 git checkout 05bf346fa32510fd191fe77de24b3ea1c481f5ff
 git apply ../patches/*.patch

adjust wifi settings with your ssid/password and host ip

 vim main/espd.h
 
 # fix bug, comment out this line: i2s_mclk_gpio_select(I2S_NUM_0, GPIO_NUM_0);
 vim main/espd.c

setup esp32 config

 cp sdkconfig.lyrat sdkconfig

compile

 idf.py build

upload

 idf.py -p /dev/ttyUSB0 flash