====
DAC
====

.. toctree::
    :maxdepth: 1

    DAC - poll <dac_polling>
    DAC - dma <dac_dma>

DAC 各通道对应的 GPIO 如下表：

.. table:: GPIO 口
    :widths: 25, 25, 25, 25
    :width: 80%
    :align: center

    +----------+-----------+-----------+---------------------------+
    |   名称   | 芯片系列  | 精度      |           GPIO            |
    +==========+===========+===========+===========================+
    | ChannelA | BL702     | 10-bit    | GPIO 11                   |
    +          +-----------+-----------+---------------------------+
    |          | BL808     | 10-bit    | GPIO 11                   |
    +          +-----------+-----------+---------------------------+
    |          | BL616     | 12-bit    | GPIO 3                    |
    +----------+-----------+-----------+---------------------------+
    | ChannelB | BL702     | 10-bit    | GPIO 17                   |
    +          +-----------+-----------+---------------------------+
    |          | BL808     | 10-bit    | GPIO 4                    |
    +          +-----------+-----------+---------------------------+
    |          | BL616     | 12-bit    | GPIO 2                    |
    +----------+-----------+-----------+---------------------------+