zephyr,gpio-stepper

Vendor: Zephyr-specific binding

Note

An implementation of a driver matching this compatible is available in drivers/stepper/gpio_stepper_controller.c.

Description

GPIO Stepper Controller for darlington transistor arrays or dual H-bridge

Example:
  /* Lead A is connected Lead C and Lead B is connected to Lead D*/
  stepper: stepper {
      compatible = "zephyr,gpio-stepper";
      gpios = <&gpioa 9 GPIO_ACTIVE_HIGH>,  /* Lead A1/A */
              <&gpioc 7 GPIO_ACTIVE_HIGH>,  /* Lead B1/B */
              <&gpiob 0 GPIO_ACTIVE_HIGH>,  /* Lead A2/C */
              <&gpioa 7 GPIO_ACTIVE_HIGH>;  /* Lead B2/D */
  };

Properties

Properties not inherited from the base binding file.

Name

Type

Details

gpios

phandle-array

 
The gpio pin array on which the stepper inputs are to be connected

This property is required.

invert-direction

boolean

 
Invert motor direction.

micro-step-res

int

 
micro-step resolution to be set while initializing the device driver.

Default value: 1

Legal values: 1, 2, 4, 8, 16, 32, 64, 128, 256

step-gpios

phandle-array

 
The GPIO pins used to send step signals to the stepper motor.

dir-gpios

phandle-array

 
The GPIO pins used to send direction signals to the stepper motor.
Pin will be driven high for forward direction and low for reverse direction.