Shadowtrance
12 lines
536 B
Markdown
12 lines
536 B
Markdown
# SPM1423 PDM microphone
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A driver for the `SPM1423` PDM MEMS microphone (and compatible PDM mics), wired
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as an input-only `AUDIO_CODEC_TYPE` device. Has no I2C/register interface -- just
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a PDM data line -- so there is no I2C parent; the device sits standalone in the
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devicetree and only references the I2S controller by name. PDM RX is hardware-
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restricted to I2S controller 0.
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See https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/core/SPM1423HM4H-B_datasheet_en.pdf
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License: [Apache v2.0](LICENSE-Apache-2.0.md)
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