| # 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] |
