| # Copyright (C) 2020 Peter Bigot Consulting, LLC |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| description: | |
| GPIO pins exposed on Particle Gen3 (Feather) headers. |
| |
| The Particle Gen3 boards are compatible with the Adafruit Feather |
| "shields" but use a different orientation and pin numbering scheme. |
| |
| With the board oriented with the micro USB at the top: |
| * A 12-pin header on the right. 9 pins on this header are exposed |
| by this binding |
| * A 16-pin header. 13 pins on this header are exposed by this |
| binding. |
| |
| This binding provides a nexus mapping for 22 pins where parent pins |
| 0 through 8 correspond to the pins on the 12-pin header, starting |
| from the bottom; and pins 9 through 21 correspond to pins on the |
| 16-pin header, skipping the bottom pin then assigning 9 through 19, |
| skipping over GND, and replacing the lower 3V3 with pin 20. The |
| physical layout is depicted below. |
| |
| 21 RESETn |
| - 3V3 |
| 20 MODEn |
| - GND |
| 19 ADC0 LiPo+ - |
| 18 ADC1 ENABLE - |
| 17 ADC2 VBUS - |
| 16 ADC3 PWM1 8 |
| 15 ADC4 PWM0 7 |
| 14 SS PWM1 6 |
| 13 SCK PWM1 5 |
| 12 MOSI PWM1 4 |
| 11 MISO PWM3 3 |
| 10 RX PWM3 2 |
| 9 TX SCL 1 |
| - n/c SDA 0 |
| |
| |
| compatible: "particle-gen3-header" |
| |
| include: [gpio-nexus.yaml, base.yaml] |
