51 lines
1.9 KiB
YAML
51 lines
1.9 KiB
YAML
# Copyright (c) 2019 Foundries.io
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# Copyright (C) 2019 Peter Bigot Consulting, LLC
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# SPDX-License-Identifier: Apache-2.0
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description: |
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GPIO pins exposed on Arduino Uno (R3) headers.
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The Arduino Uno layout provides four headers, two each along
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opposite edges of the board.
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Proceeding counter-clockwise:
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* An 8-pin Power Supply header. No pins on this header are exposed
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by this binding.
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* A 6-pin Analog Input header. This has analog input signals
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labeled from A0 at the top through A5 at the bottom.
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* An 8-pin header (opposite Analog Input). This has digital input
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signals labeled from D0 at the bottom D7 at the top;
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* A 10-pin header (opposite Power Supply). This has six additional
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digital input signals labelled from D8 at the bottom through D13
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towards the top, skipping two pins, then finishing with D14 and
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D15 at the top.
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This binding provides a nexus mapping for 20 pins where parent pins 0
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through 5 correspond to A0 through A5, and parent pins 6 through 21
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correspond to D0 through D15, as depicted below:
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D15 21
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D14 20
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AREF -
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GND -
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- N/C D13 19
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- IOREF D12 18
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- RESET D11 17
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- 3V3 D10 16
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- 5V D9 15
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- GND D8 14
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- GND
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- VIN D7 13
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D6 12
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0 A0 D5 11
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1 A1 D4 10
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2 A2 D3 9
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3 A3 D2 8
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4 A4 D1 7
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5 A5 D0 6
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compatible: "arduino-header-r3"
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include: [gpio-nexus.yaml, base.yaml]
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