blob: 2b3c15bbe8f106843cefc76c4bdb650c339df8d6 [file] [log] [blame]
# Copyright (c) 2022 TOKITA Hiroshi <tokita.hiroshi@fujitsu.com>
# SPDX-License-Identifier: Apache-2.0
description: |
GPIO pins exposing on Arduino MKR headers.
The Arduino MKR layout provides two headers on both edges of the board.
* One side of the 14-pin header is analog inputs and digital signals.
A1 to A6 is Analog input. The outside pin is AREF.
A0 that is next to AREF used as a DAC output pin too.
D0-D5 is a digital output.
* The other side 14-pin header is power supplies and peripheral interface.
There are 5V and VCC power supply, GND, and RESET pin. UART, I2C,
and SPI peripheral pins are also there. The end 2 pins are simple GPIO pins.
This binding provides a nexus mapping for 22 pins where parent pins 0
through 14 correspond to D0 through D21, and parent pins 15 through 21
correspond to A0 through A6, as depicted below.
- AREF 5V -
15 A0/D15/DAC0 VIN -
16 A1/D16 VCC -
17 A2/D17 GND -
18 A3/D18 RESET -
19 A4/D19 D14/TX 14
20 A5/D20 D13/RX 13
21 A6/D21 D12/SCL 12
0 D0 D11/SDA 11
1 D1 D10/CPIO 10
2 D2 D9/SCK 9
3 D3 D8/COPI 8
4 D4 D7 7
5 D5 D6 6
compatible: "arduino-mkr-header"
include: [gpio-nexus.yaml, base.yaml]