Wireless audio using ESPNOW between two ESP32
Working @48k/32b 96KHz/32bit
ESP32 WROOM 32D devkit ->ESPNOW->ESP32-S3 DevkitC SPDIF output with modified SPDIF.c from esp_a2dp_sink_spdif
max ~0.22A for esp32(SOURCE) and ~0.12A for ESP32-S3(SINK)
AMPDU off
Very slight delay between source and sink side playback.
Noticeable when source and sink playing at the same time.
Susceptible to interference at higher PHY rates, at MCS6 moving a wireless mouse around was enough to cause audio to skip
ToDO:
change to broadcast based so there is no wait for an ack, make different data packet formatting for different purposes
cleanup code, change wifi menuconfig settings for rx/tx.
maybe try MCS7 again
maybe dedicated threads for send | receive
fix problems pairing at startup, needs reset several times to pair and start sending data
watchdog / timer / try detect silence/disconnection and go sleep
try reduce power consumption
move parts of code to different files
Done:
Change to Ring Buffer
Working with Source side I2S_receive at 48KHz/32b 64 frame_num and 2 desc_num
96KHz/32Bit Frame=256 Desc_num = 2
Dedicated thread for tx/rx
Change to Broadcast