Basic light scheduler using WS2812 driver
WS2812 are small RGB leds controlled with a 1-wire protocol. This module is an example of controlling several leds with the color changing continuously. Implementation for ChibiOS using DMA.
Example for airframe file
Add to your firmware section: This example contains all possible configuration options, not all of them are mandatory!
<module name="light_scheduler">
b'<define name="WS2812_NB_LEDS" value="8" />\n '
b'<configure name="WS2812_TIM" value="TIM1" />\n '
</module>
Module configuration options
Configure Options
- name:
WS2812_TIM
value: TIM1
Description: Select the timer used to control the LEDs
Define Options
- name:
WS2812_NB_LEDS
value: 8
Description: Number of leds
Module functions
Init Functions
These initialization functions are called once on startup.
Periodic Functions
These functions are called periodically at the specified frequency from the module periodic loop.
- light_scheduler_periodic()
- Frequency in Hz: 8
- Autorun: LOCK
Periodic function automatically starts after init and can't be stopped.
Files
Header Files
The following headers are automatically included in modules.h
Source Files
Raw light_scheduler.xml file:
<!DOCTYPE module SYSTEM "module.dtd">
<module name="light_scheduler" dir="light">
<doc>
<description>
Basic light scheduler using WS2812 driver
WS2812 are small RGB leds controlled with a 1-wire protocol.
This module is an example of controlling several leds with the color changing continuously.
Implementation for ChibiOS using DMA.
</description>
<configure name="WS2812_TIM" value="TIM1" description="Select the timer used to control the LEDs"/>
<define name="WS2812_NB_LEDS" value="8" description="Number of leds"/>
</doc>
<header>
<file name="light_scheduler.h"/>
</header>
<init fun="light_scheduler_init()"/>
<periodic fun="light_scheduler_periodic()" freq="8"/>
<makefile target="ap">
<configure name="WS2812_TIM" default="TIM1" case="upper"/>
<define name="STM32_PWM_USE_$(WS2812_TIM)" cond="ifeq ($(RTOS),chibios)"/>
<file name="light_scheduler.c"/>
<file_arch name="light_ws2812_arch.c"/>
<file_arch name="hal_stm32_dma.c" dir="mcu_periph" cond="ifeq ($(RTOS),chibios)"/>
</makefile>
</module>