2017-04-05 03:20:40 +08:00
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.. _rgb-led-sample:
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2017-01-09 22:12:15 +08:00
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PWM: RGB LED
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############
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Overview
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2017-01-21 07:58:05 +08:00
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********
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2017-01-09 22:12:15 +08:00
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2016-10-19 06:35:20 +08:00
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This is a sample app which drives a RGB LED using PWM.
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2019-06-13 20:31:56 +08:00
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There are three single-color component LEDs in an RGB LED. Each component LED
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is driven by a PWM port where the pulse width is changed from zero to a fusion
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flicker threshold (the minimum flicker rate where the LED is perceived as being
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steady), causing each component LED to step from dark to max brightness. Three
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**for** loops (one for each component LED) generate a gradual range of color
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changes from the RGB LED, and the sample repeats forever.
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2016-10-19 06:35:20 +08:00
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2017-01-09 22:12:15 +08:00
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Wiring
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2017-01-21 07:58:05 +08:00
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******
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2017-01-09 22:12:15 +08:00
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2018-12-11 18:48:14 +08:00
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Hexiwear K64
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============
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No special board setup is necessary because there is an on-board RGB LED
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connected to the K64 PWM.
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2017-01-09 22:12:15 +08:00
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Building and Running
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2017-01-21 07:58:05 +08:00
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********************
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2017-01-09 22:12:15 +08:00
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This samples does not output anything to the console. It can be built and
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flashed to a board as follows:
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2017-11-12 17:12:44 +08:00
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.. zephyr-app-commands::
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:zephyr-app: samples/basic/rgb_led
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2018-12-11 18:48:14 +08:00
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:board: hexiwear_k64
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2017-11-12 17:12:44 +08:00
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:goals: build flash
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:compact:
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