This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

nordic,nrf-qdec¶

Vendor: Nordic Semiconductor

Description¶

Nordic nRF quadrature decoder (QDEC) node

Properties¶

Properties not inherited from the base binding file.

Name	Type	Details
`a-pin`	`int`	The A pin to use. For pins P0.0 through P0.31, use the pin number. For example, to use P0.16 for the A pin, set: a-pin = <16>; For pins P1.0 through P1.31, add 32 to the pin number. For example, to use P1.2 for the A pin, set: a-pin = <34>; /* 32 + 2 / This property is required*.
`b-pin`	`int`	The B pin to use. The pin numbering scheme is the same as the a-pin property's. This property is required.
`led-pin`	`int`	The LED pin to use for a light based QDEC device. The pin numbering scheme is the same as the a-pin property's.
`enable-pin`	`int`	The enable pin to use, to enable a connected QDEC device. The pin numbering scheme is the same as the a-pin property's.
`led-pre`	`int`	Time LED is enabled prior to sampling event (in us) This property is required.
`steps`	`int`	Number of steps on the rotating wheel 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 “nordic,nrf-qdec” compatible.

Name	Type	Details
`reg`	`array`	register space This property is required. See Important properties for more information.
`interrupts`	`array`	interrupts for device This property is required. See Important properties for more information.
`label`	`string`	Human readable string describing the device (used as device_get_binding() argument) This property is required. See Important properties for more information.
`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-names`	`string-array`	name of each register space
`interrupts-extended`	`compound`	extended interrupt specifier for device
`interrupt-names`	`string-array`	name of each interrupt
`interrupt-parent`	`phandle`	phandle to interrupt controller node
`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
`wakeup-source`	`boolean`	Property to identify that a device can be used as wake up source. When this property is provided a specific flag is set into the device that tells the system that the device is capable of wake up the system. Wake up capable devices are disabled (interruptions will not wake up the system) by default but they can be enabled at runtime if necessary.