| .. _led_pwm: |
| |
| LED PWM sample application |
| ########################## |
| |
| Overview |
| ******** |
| |
| This sample allows to test the led-pwm driver. The first "pwm-leds" compatible |
| device instance found in DT is used. For each LEDs attached to this device |
| (child nodes) the same test pattern (described below) is executed. The LED API |
| functions are used to control the LEDs. |
| |
| Test pattern |
| ============ |
| |
| For each PWM LEDs (one after the other): |
| |
| - Turning on |
| - Turning off |
| - Increasing brightness gradually |
| - Blinking on: 0.1 sec, off: 0.1 sec |
| - Blinking on: 1 sec, off: 1 sec |
| - Turning off |
| |
| Building and Running |
| ******************** |
| |
| This sample can be built and executed on all the boards with PWM LEDs connected. |
| The LEDs must be correctly described in the DTS: the compatible property of the |
| device node must match "pwm-leds". And for each LED, a child node must be |
| defined and the PWM configuration must be provided through a "pwms" phandle's |
| node. |
