28 lines
898 B
Plaintext
28 lines
898 B
Plaintext
STMicroelectronics STM32 Low-Power Timer quadrature encoder and counter
|
|
|
|
STM32 Low-Power Timer provides several counter modes. It can be used as:
|
|
- quadrature encoder to detect angular position and direction of rotary
|
|
elements, from IN1 and IN2 input signals.
|
|
- simple counter from IN1 input signal.
|
|
|
|
Must be a sub-node of an STM32 Low-Power Timer device tree node.
|
|
See ../mfd/stm32-lptimer.txt for details about the parent node.
|
|
|
|
Required properties:
|
|
- compatible: Must be "st,stm32-lptimer-counter".
|
|
- pinctrl-names: Set to "default".
|
|
- pinctrl-0: List of phandles pointing to pin configuration nodes,
|
|
to set IN1/IN2 pins in mode of operation for Low-Power
|
|
Timer input on external pin.
|
|
|
|
Example:
|
|
timer@40002400 {
|
|
compatible = "st,stm32-lptimer";
|
|
...
|
|
counter {
|
|
compatible = "st,stm32-lptimer-counter";
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&lptim1_in_pins>;
|
|
};
|
|
};
|