16 I2S - geo-tp/ESP32-Bus-Pirate GitHub Wiki
This mode enables audio input/output communication over the I2S bus using BCLK, LRCK (WS), and DATA lines. It supports tone generation, PCM playback, microphone signal recording and analysis.
Command | Description |
---|---|
config |
Interactively configure BCLK, LRCK, DATA pins, sample rate, and bit depth |
play <freq> [dur] |
Plays a tone at the given frequency and optional duration (press Enter to stop early) |
record |
Records from the I2S microphone and displays signal visualization |
test mic |
Checks microphone signal strength and presence |
test speaker |
Plays test tones and audio patterns through the speaker |
reset |
Reverts I2S to output mode |
-
play
generates square waves through I2S and supports both finite and interruptible playback. -
record
compresses and visualizes input signal strength in real-time. -
test speaker
plays:- A melody sequence
- Frequency sweep
- Binary test patterns
- PCM playback
-
test mic
reads microphone input, computes average signal energy, and confirms detection. -
reset
ensures output mode is restored after testing input.
mode i2s
config # Set I2S pins and parameters
play 440 1000 # Play a 1 kHz tone for 1 second
play 880 # Play tone until Enter is pressed
record # Start signal visualization from mic
test mic # Check mic input
test speaker # Play test tones
reset # Reset to output mode