flight/pios/stm32f4xx/inc/pios_ws2811_cfg.h

   1 /**
   2  ******************************************************************************
   3  *
   4  * @file       pios_ws2811_cfg.h
   5  * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2014.
   6  * @brief      A driver for ws2811 rgb led controller.
   7  *             this is a plain PiOS port of the very clever solution
   8  *             implemented by Omri Iluz in the chibios driver here:
   9  *             https://github.com/omriiluz/WS2812B-LED-Driver-ChibiOS
  10  * @see        The GNU Public License (GPL) Version 3
  11  *
  12  *****************************************************************************/
  13 /*
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 3 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful, but
  20  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  21  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  22  * for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License along
  25  * with this program; if not, write to the Free Software Foundation, Inc.,
  26  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  27  */
  28 #ifndef PIOS_WS2811_CFG_H_
  29 #define PIOS_WS2811_CFG_H_
  30
  31 #include <stdint.h>
  32 #include <pios_gpio.h>
  33 #include <pios_stm32.h>
  34 #include <pios_gpio_priv.h>
  35 #include <stm32f4xx.h>
  36 #include <stm32f4xx_tim.h>
  37 #include <stm32f4xx_dma.h>
  38 #include <optypes.h>
  39 #include <pios_ws2811.h>
  40
  41 #define PIOS_WS2811_BUFFER_SIZE        (((PIOS_WS2811_NUMLEDS) * 24))
  42 #define PIOS_WS2811_MEMORYDATASIZE     DMA_MemoryDataSize_HalfWord
  43 #define PIOS_WS2811_PERIPHERALDATASIZE DMA_PeripheralDataSize_HalfWord
  44 #define PIOS_WS2811_TIM_PERIOD         20
  45
  46 // Following times are keept on the lower side to accounts
  47 // for bus contentions and irq response time
  48 #define PIOS_WS2811_T0_HIGH_PERIOD     32 // .35us +/- 150nS
  49 #define PIOS_WS2811_T1_HIGH_PERIOD     70 // .70us +/- 150nS
  50
  51 #define PIOS_WS2811_DMA_CH1_CONFIG(channel) \
  52     { \
  53         .DMA_BufferSize         = PIOS_WS2811_BUFFER_SIZE, \
  54         .DMA_Channel            = channel, \
  55         .DMA_DIR = DMA_DIR_MemoryToPeripheral, \
  56         .DMA_FIFOMode           = DMA_FIFOMode_Enable, \
  57         .DMA_FIFOThreshold      = DMA_FIFOThreshold_HalfFull, \
  58         .DMA_Memory0BaseAddr    = 0, \
  59         .DMA_MemoryBurst        = DMA_MemoryBurst_INC4, \
  60         .DMA_MemoryDataSize     = PIOS_WS2811_MEMORYDATASIZE, \
  61         .DMA_MemoryInc          = DMA_MemoryInc_Enable, \
  62         .DMA_Mode = DMA_Mode_Circular, \
  63         .DMA_PeripheralBaseAddr = 0, \
  64         .DMA_PeripheralBurst    = DMA_PeripheralBurst_Single, \
  65         .DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE, \
  66         .DMA_PeripheralInc      = DMA_PeripheralInc_Disable, \
  67         .DMA_Priority           = DMA_Priority_VeryHigh, }
  68
  69 #define PIOS_WS2811_DMA_CH2_CONFIG(channel) \
  70     { \
  71         .DMA_BufferSize         = 4, \
  72         .DMA_Channel            = channel, \
  73         .DMA_DIR = DMA_DIR_MemoryToPeripheral, \
  74         .DMA_FIFOMode           = DMA_FIFOMode_Enable, \
  75         .DMA_FIFOThreshold      = DMA_FIFOThreshold_Full, \
  76         .DMA_Memory0BaseAddr    = 0, \
  77         .DMA_MemoryBurst        = DMA_MemoryBurst_INC4, \
  78         .DMA_MemoryDataSize     = PIOS_WS2811_MEMORYDATASIZE, \
  79         .DMA_MemoryInc          = DMA_MemoryInc_Enable, \
  80         .DMA_Mode = DMA_Mode_Circular, \
  81         .DMA_PeripheralBaseAddr = 0, \
  82         .DMA_PeripheralBurst    = DMA_PeripheralBurst_Single, \
  83         .DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE, \
  84         .DMA_PeripheralInc      = DMA_PeripheralInc_Disable, \
  85         .DMA_Priority           = DMA_Priority_VeryHigh, }
  86
  87 #define PIOS_WS2811_DMA_UPDATE_CONFIG(channel) \
  88     { \
  89         .DMA_BufferSize         = 4, \
  90         .DMA_Channel            = channel, \
  91         .DMA_DIR = DMA_DIR_MemoryToPeripheral, \
  92         .DMA_FIFOMode           = DMA_FIFOMode_Enable, \
  93         .DMA_FIFOThreshold      = DMA_FIFOThreshold_Full, \
  94         .DMA_Memory0BaseAddr    = 0, \
  95         .DMA_MemoryBurst        = DMA_MemoryBurst_INC4, \
  96         .DMA_MemoryDataSize     = PIOS_WS2811_MEMORYDATASIZE, \
  97         .DMA_MemoryInc          = DMA_MemoryInc_Enable, \
  98         .DMA_Mode = DMA_Mode_Circular, \
  99         .DMA_PeripheralBaseAddr = 0, \
 100         .DMA_PeripheralBurst    = DMA_PeripheralBurst_Single, \
 101         .DMA_PeripheralDataSize = PIOS_WS2811_PERIPHERALDATASIZE, \
 102         .DMA_PeripheralInc      = DMA_PeripheralInc_Disable, \
 103         .DMA_Priority           = DMA_Priority_High }
 104
 105
 106 typedef uint16_t ledbuf_t;
 107
 108 struct pios_ws2811_pin_cfg {
 109     GPIO_TypeDef     *gpio;
 110     GPIO_InitTypeDef gpioInit;
 111 };
 112 struct pios_ws2811_cfg {
 113     TIM_TimeBaseInitTypeDef timerInit;
 114     TIM_TypeDef        *timer;
 115     uint8_t            timerCh1;
 116     uint8_t            timerCh2;
 117
 118     DMA_InitTypeDef    dmaInitCh1;
 119     DMA_Stream_TypeDef *streamCh1;
 120     uint32_t           dmaItCh1;
 121
 122     DMA_InitTypeDef    dmaInitCh2;
 123     DMA_Stream_TypeDef *streamCh2;
 124     uint32_t           dmaItCh2;
 125
 126     DMA_InitTypeDef    dmaInitUpdate;
 127     DMA_Stream_TypeDef *streamUpdate;
 128     uint32_t           dmaItUpdate;
 129     uint16_t           dmaSource;
 130     struct stm32_irq   irq;
 131 };
 132
 133 void PIOS_WS2811_Init(uint32_t *dev_id, const struct pios_ws2811_cfg *ws2811_cfg, const struct pios_ws2811_pin_cfg *ws2811_pin_cfg);
 134
 135 void PIOS_WS2811_DMA_irq_handler();
 136 #endif /* PIOS_WS2811_H_ */