micropython/mpconfigboard.h at fd1e66edb3ef479016dbcc5aa7158d8fdfec5793 - micropython - Licsber's cup of Gitea.

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robert-hh e69313f89c samd: Add a vref=num option to the ADC and DAC constructor.

ADC: The argument of vref=num is an integer. Values for num are:

    SAMD21:
    0  INT1V   1.0V voltage reference
    1  INTVCC0 1/1.48 Analog voltage supply
    2  INTVCC1 1/2 Analog voltage supply (only for VDDANA > 2.0V)
    3  VREFA   External reference
    4  VREFB   External reference

    SAMD51:
    0  INTREF  internal bandgap reference
    1  INTVCC1 Analog voltage supply
    2  INTVCC0 1/2 Analog voltage supply (only for VDDANA > 2.0v)
    3  AREFA   External reference A
    4  AREFB   External reference B
    5  AREFC   External reference C (ADC1 only)

DAC: The argument of vref=num is an integer. Suitable values:

    SAMD21:
    0  INT1V   Internal voltage reference
    1  VDDANA  Analog voltage supply
    2  VREFA   External reference

    SAMD51:
    0  INTREF Internal bandgap reference
    1  VDDANA Analog voltage supply
    2  VREFAU Unbuffered external voltage reference (not buffered in DAC)
    4  VREFAB Buffered external voltage reference (buffered in DAC).

2022-12-14 12:48:24 +11:00

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 #define MICROPY_HW_BOARD_NAME "Seeed Xiao"
 #define MICROPY_HW_MCU_NAME   "SAMD21G18A"
 #define MICROPY_HW_XOSC32K  (1)
 #define MICROPY_HW_ADC_VREF (2)