27 lines
705 B
Markdown
27 lines
705 B
Markdown
This sketch is a minimal ESP32-C3 Opus codec smoke test.
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What it does:
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- Generates a sine wave locally
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- Encodes it with Opus
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- Decodes it immediately again
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- Sends the decoded PCM to I2S
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Why this example:
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- It tests the raw Opus codec path without Ogg or CAN framing
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- It is closer to the later Pi -> CAN -> ESP32 decoder path than MP3
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- It keeps CPU load down by using 16 kHz mono and low encoder complexity
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Expected hardware:
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- ESP32-C3
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- I2S DAC / amp on:
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- BCLK = GPIO 6
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- LRCK = GPIO 7
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- DIN = GPIO 5
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Required Arduino libraries:
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- `arduino-audio-tools`
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- `arduino-libopus`
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If this sketch runs and outputs a stable sine tone, the basic Opus encode/decode
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chain is working on the ESP32-C3.
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