arduino-header-r3

Vendor: Generic or vendor-independent

Description

GPIO pins exposed on Arduino Uno (R3) headers.

The Arduino Uno layout provides four headers, two each along
opposite edges of the board.

Proceeding counter-clockwise:
* An 8-pin Power Supply header.  No pins on this header are exposed
  by this binding.
* A 6-pin Analog Input header.  This has analog input signals
  labeled from A0 at the top through A5 at the bottom.
* An 8-pin header (opposite Analog Input).  This has digital input
  signals labeled from D0 at the bottom D7 at the top;
* A 10-pin header (opposite Power Supply).  This has six additional
  digital input signals labelled from D8 at the bottom through D13
  towards the top, skipping two pins, then finishing with D14 and
  D15 at the top.

This binding provides a nexus mapping for 20 pins where parent pins 0
through 5 correspond to A0 through A5, and parent pins 6 through 21
correspond to D0 through D15, as depicted below:

                             D15  21
                             D14  20
                             AREF -
                             GND  -
    - N/C                    D13  19
    - IOREF                  D12  18
    - RESET                  D11  17
    - 3V3                    D10  16
    - 5V                     D9   15
    - GND                    D8   14
    - GND
    - VIN                    D7   13
                             D6   12
    0 A0                     D5   11
    1 A1                     D4   10
    2 A2                     D3    9
    3 A3                     D2    8
    4 A4                     D1    7
    5 A5                     D0    6

Properties

Properties not inherited from the base binding file.

Name

Type

Details

gpio-map

compound

This property is required.

gpio-map-mask

compound

gpio-map-pass-thru

compound

#gpio-cells

int

Number of items to expect in a GPIO specifier

This property is required.

Properties inherited from the base binding file, which defines common properties that may be set on many nodes. Not all of these may apply to the “arduino-header-r3” compatible.

Name

Type

Details

status

string

indicates the operational status of a device

Legal values: 'ok', 'okay', 'disabled', 'reserved', 'fail', 'fail-sss'

See Important properties for more information.

compatible

string-array

compatible strings

This property is required.

See Important properties for more information.

reg

array

register space

See Important properties for more information.

reg-names

string-array

name of each register space

interrupts

array

interrupts for device

See Important properties for more information.

interrupts-extended

compound

extended interrupt specifier for device

interrupt-names

string-array

name of each interrupt

interrupt-parent

phandle

phandle to interrupt controller node

label

string

Human readable string describing the device (used as device_get_binding() argument)

See Important properties for more information.

clocks

phandle-array

Clock gate information

clock-names

string-array

name of each clock

#address-cells

int

number of address cells in reg property

#size-cells

int

number of size cells in reg property

dmas

phandle-array

DMA channels specifiers

dma-names

string-array

Provided names of DMA channel specifiers

io-channels

phandle-array

IO channels specifiers

io-channel-names

string-array

Provided names of IO channel specifiers