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88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
/**
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******************************************************************************
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*
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* @file pios_ws2811.h
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2014.
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* @brief A driver for ws2811 rgb led controller.
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* this is a plain PiOS port of the very clever solution
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* implemented by Omri Iluz in the chibios driver here:
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* https://github.com/omriiluz/WS2812B-LED-Driver-ChibiOS
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* @see The GNU Public License (GPL) Version 3
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*
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*****************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef PIOS_WS2811_H_
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#define PIOS_WS2811_H_
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#include <stdint.h>
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#include <pios_gpio.h>
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#include <pios_stm32.h>
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#include <pios_gpio_priv.h>
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#include <stm32f4xx.h>
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#include <stm32f4xx_tim.h>
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#include <stm32f4xx_dma.h>
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#define sign(x) ((x > 0) - (x < 0))
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#define PIOS_WS2811_NUMLEDS 2
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#define PIOS_WS2811_BUFFER_SIZE (((PIOS_WS2811_NUMLEDS) * 24))
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#define PIOS_WS2811_MEMORYDATASIZE DMA_MemoryDataSize_HalfWord
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#define PIOS_WS2811_PERIPHERALDATASIZE DMA_PeripheralDataSize_HalfWord
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#define PIOS_WS2811_TIM_PERIOD 20
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typedef uint16_t ledbuf_t;
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typedef struct Color Color;
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struct Color {
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uint8_t R;
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uint8_t G;
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uint8_t B;
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};
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struct pios_ws2811_pin_cfg{
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GPIO_TypeDef *gpio;
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GPIO_InitTypeDef gpioInit;
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};
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struct pios_ws2811_cfg {
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TIM_TimeBaseInitTypeDef timerInit;
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TIM_TypeDef *timer;
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uint8_t timerCh1;
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uint8_t timerCh2;
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DMA_InitTypeDef dmaInitCh1;
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DMA_Stream_TypeDef *streamCh1;
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uint32_t dmaItCh1;
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DMA_InitTypeDef dmaInitCh2;
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DMA_Stream_TypeDef *streamCh2;
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uint32_t dmaItCh2;
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DMA_InitTypeDef dmaInitUpdate;
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DMA_Stream_TypeDef *streamUpdate;
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uint32_t dmaItUpdate;
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uint16_t dmaSource;
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struct stm32_irq irq;
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};
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void PIOS_WS2811_Init(const struct pios_ws2811_cfg *ws2811_cfg, const struct pios_ws2811_pin_cfg *ws2811_pin_cfg);
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void PIOS_WS2811_setColorRGB(Color c, uint8_t led, bool update);
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void PIOS_WS2811_Update();
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void PIOS_WS2811_DMA_irq_handler();
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#endif /* PIOS_WS2811_H_ */
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