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137 lines
5.4 KiB
C
137 lines
5.4 KiB
C
/**
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******************************************************************************
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*
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* @file pios_ws2811_cfg.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_CFG_H_
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#define PIOS_WS2811_CFG_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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#include <optypes.h>
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#include <pios_ws2811.h>
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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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// Following times are keept on the lower side to accounts
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// for bus contentions and irq response time
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#define PIOS_WS2811_T0_HIGH_PERIOD 32 // .35us +/- 150nS
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#define PIOS_WS2811_T1_HIGH_PERIOD 70 // .70us +/- 150nS
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#define PIOS_WS2811_DMA_CH1_CONFIG(channel) \
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{ \
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.DMA_BufferSize = PIOS_WS2811_BUFFER_SIZE, \
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.DMA_Channel = channel, \
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.DMA_DIR = DMA_DIR_MemoryToPeripheral, \
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.DMA_FIFOMode = DMA_FIFOMode_Enable, \
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.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull, \
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.DMA_Memory0BaseAddr = 0, \
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.DMA_MemoryBurst = DMA_MemoryBurst_INC4, \
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.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE, \
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.DMA_MemoryInc = DMA_MemoryInc_Enable, \
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.DMA_Mode = DMA_Mode_Circular, \
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.DMA_PeripheralBaseAddr = 0, \
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.DMA_PeripheralBurst = DMA_PeripheralBurst_Single, \
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.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE, \
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.DMA_PeripheralInc = DMA_PeripheralInc_Disable, \
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.DMA_Priority = DMA_Priority_VeryHigh, }
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#define PIOS_WS2811_DMA_CH2_CONFIG(channel) \
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{ \
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.DMA_BufferSize = 4, \
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.DMA_Channel = channel, \
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.DMA_DIR = DMA_DIR_MemoryToPeripheral, \
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.DMA_FIFOMode = DMA_FIFOMode_Enable, \
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.DMA_FIFOThreshold = DMA_FIFOThreshold_Full, \
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.DMA_Memory0BaseAddr = 0, \
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.DMA_MemoryBurst = DMA_MemoryBurst_INC4, \
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.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE, \
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.DMA_MemoryInc = DMA_MemoryInc_Enable, \
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.DMA_Mode = DMA_Mode_Circular, \
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.DMA_PeripheralBaseAddr = 0, \
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.DMA_PeripheralBurst = DMA_PeripheralBurst_Single, \
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.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE, \
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.DMA_PeripheralInc = DMA_PeripheralInc_Disable, \
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.DMA_Priority = DMA_Priority_VeryHigh, }
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#define PIOS_WS2811_DMA_UPDATE_CONFIG(channel) \
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{ \
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.DMA_BufferSize = 4, \
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.DMA_Channel = channel, \
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.DMA_DIR = DMA_DIR_MemoryToPeripheral, \
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.DMA_FIFOMode = DMA_FIFOMode_Enable, \
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.DMA_FIFOThreshold = DMA_FIFOThreshold_Full, \
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.DMA_Memory0BaseAddr = 0, \
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.DMA_MemoryBurst = DMA_MemoryBurst_INC4, \
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.DMA_MemoryDataSize = PIOS_WS2811_MEMORYDATASIZE, \
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.DMA_MemoryInc = DMA_MemoryInc_Enable, \
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.DMA_Mode = DMA_Mode_Circular, \
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.DMA_PeripheralBaseAddr = 0, \
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.DMA_PeripheralBurst = DMA_PeripheralBurst_Single, \
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.DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE, \
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.DMA_PeripheralInc = DMA_PeripheralInc_Disable, \
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.DMA_Priority = DMA_Priority_High }
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typedef uint16_t ledbuf_t;
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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_DMA_irq_handler();
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#endif /* PIOS_WS2811_H_ */
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