# Copyright (C) 2021 Peter Johanson
# SPDX-License-Identifier: Apache-2.0

description: |
    GPIO pins exposed on Sparkfun Pro Micro (and compatible devices) headers.

    The Sparkfun Pro Micro layout provides two headers, along opposite
    edges of the board.

    Proceeding counter-clockwise:
    * A 12-pin Power and Digital Input header.  This has input signals
      labeled from 0 at the top through 9 at the bottom.
    * An 12-pin Power and Digital/Analog Input header.  This
      has four power pins, followed by eight inputs, with a
      non-monotonically decreasing numbering.

    This binding provides a nexus mapping for 18 pins, as depicted below:

        1 D1/TXO                 RAW     -
        0 D0/RXI                 GND     -
        - GND                    RST     -
        - GND                    VCC     -
        2 D2                     D21/A3  21
        3 D3                     D20/A2  20
        4 D4/A6                  D19/A1  19
        5 D5                     D18/A0  18
        6 D6/A7                  D15     15
        7 D7                     D14     14
        8 D8/A8                  D16     16
        9 D9/A9                  D10/A10 10

    A graphical datasheet of the headers can be seen here:
    https://cdn.sparkfun.com/assets/f/d/8/0/d/ProMicro16MHzv2.pdf

compatible: "sparkfun,pro-micro-gpio"

include: [gpio-nexus.yaml, base.yaml]