dts/bindings/gpio/panasonic,reduced-arduino-header.yaml

# Copyright (c) 2022 Panasonic Industrial Devices Europe GmbH
# SPDX-License-Identifier: Apache-2.0

description: |
    Panasonic's reduced Arduino header.

                                  D15    21
                                  D14    20
                                  AREF   -
                                  GND    -
        -   N/C                   D13    19
        -   IOREF                 D12    18
        -   RESET                 D11    17
        -   3V3                   D10    16
        -   5V                    D9     NC
        -   GND                   D8     NC
        -   GND
        -   VIN                   D7     NC
                                  D6     NC
        0   A0                    D5     11
        1   A1                    D4     10
        2   A2                    D3     9
        3   A3                    D2     8
        NC  A4                    D1     7
        NC  A5                    D0     6

    Panasonic's reduced Arduino header is based on the Arduino UNO layout
    and provides four different headers. The main difference is that some
    pins are not available due to the lack of pins on the Panasonic module.
    These unconnected pins are labeled "NC" in the mapping above.

    So:

    1. Power Supply header exactly, like on Arduino UNO layout.

    2. Analog Input header, like on Arduino UNO layout, but A4 and A5 are
    not connected.

    3. 8-pin header (opposite Analog Input).  Digital input signals, like on
    Arduino UNO layout, labeled from D0 at the bottom to D7 at the top, but D6
    and D7 are not connected.

    4. 10-pin header (opposite Power Supply). Digital input signals, like on
    Arduino UNO layout, labeled from D8 at the bottom through D15 at the top,
    but D8 and D9 are not connected.

compatible: "panasonic,reduced-arduino-header"

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