Updated frequency minimum requirements in docs and examples (#444)
Updated frequency minimum requirements in docs and examples
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@ -45,11 +45,13 @@
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//| Create a PDMIn object associated with the given pins. This allows you to
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//| record audio signals from the given pins. Individual ports may put further
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//| restrictions on the recording parameters.
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//| restrictions on the recording parameters. The overall frequency is
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//| determined by `frequency`x`oversample`, and the total must be 1MHz or
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//| higher, so `frequency` must be a minimum of 16000.
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//|
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//| :param ~microcontroller.Pin clock_pin: The pin to output the clock to
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//| :param ~microcontroller.Pin data_pin: The pin to read the data from
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//| :param int frequency: Target frequency of the resulting samples. Check `frequency` for real value.
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//| :param int frequency: Target frequency in Hz of the resulting samples. Check `frequency` for real value
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//| :param int bit_depth: Final number of bits per sample. Must be divisible by 8
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//| :param bool mono: True when capturing a single channel of audio, captures two channels otherwise
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//| :param int oversample: Number of single bit samples to decimate into a final sample. Must be divisible by 8
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@ -61,7 +63,7 @@
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//|
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//| # Prep a buffer to record into
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//| b = bytearray(200)
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//| with audiobusio.PDMIn(board.MICROPHONE_CLOCK, board.MICROPHONE_DATA) as mic:
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//| with audiobusio.PDMIn(board.MICROPHONE_CLOCK, board.MICROPHONE_DATA, frequency=16000) as mic:
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//| mic.record(b, len(b))
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//|
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//| Record 16-bit unsigned samples to buffer::
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@ -75,7 +77,7 @@
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//| b = array.array("H")
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//| for i in range(200):
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//| b.append(0)
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//| with audiobusio.PDMIn(board.MICROPHONE_CLOCK, board.MICROPHONE_DATA, bit_depth=16) as mic:
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//| with audiobusio.PDMIn(board.MICROPHONE_CLOCK, board.MICROPHONE_DATA, frequency=16000, bit_depth=16) as mic:
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//| mic.record(b, len(b))
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//|
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STATIC mp_obj_t audiobusio_pdmin_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *pos_args) {
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