2 * This file is part of Cleanflight and Betaflight.
4 * Cleanflight and Betaflight are free software. You can redistribute
5 * this software and/or modify this software under the terms of the
6 * GNU General Public License as published by the Free Software
7 * Foundation, either version 3 of the License, or (at your option)
10 * Cleanflight and Betaflight are distributed in the hope that they
11 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
12 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 * See the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this software.
18 * If not, see <http://www.gnu.org/licenses/>.
25 #include "drivers/io_types.h"
27 #define WS2811_LED_STRIP_LENGTH 32
29 #define WS2811_BITS_PER_LED 24
31 #if defined(USE_WS2811_SINGLE_COLOUR)
32 #define WS2811_DATA_BUFFER_SIZE 1
33 #define WS2811_DMA_BUFFER_SIZE (WS2811_DATA_BUFFER_SIZE * WS2811_BITS_PER_LED)
34 // Do 2 extra iterations of the DMA transfer with the ouptut set to low to generate the > 50us delay.
35 #define WS2811_DELAY_ITERATIONS 2
37 #define WS2811_DATA_BUFFER_SIZE WS2811_LED_STRIP_LENGTH
39 #define WS2811_DELAY_BUFFER_LENGTH 42
40 // number of bytes needed is #LEDs * 24 bytes + 42 trailing bytes)
41 #define WS2811_DMA_BUFFER_SIZE (WS2811_DATA_BUFFER_SIZE * WS2811_BITS_PER_LED + WS2811_DELAY_BUFFER_LENGTH)
44 #define WS2811_TIMER_MHZ 48
45 #define WS2811_CARRIER_HZ 800000
47 // Enumeration to match the string options defined in lookupLedStripFormatRGB in settings.c
51 } ledStripFormatRGB_e
;
53 void ws2811LedStripInit(ioTag_t ioTag
);
54 void ws2811LedStripEnable(void);
56 bool ws2811LedStripHardwareInit(ioTag_t ioTag
);
57 void ws2811LedStripDMAEnable(void);
59 void ws2811UpdateStrip(ledStripFormatRGB_e ledFormat
);
61 void setLedHsv(uint16_t index
, const hsvColor_t
*color
);
62 void getLedHsv(uint16_t index
, hsvColor_t
*color
);
64 void scaleLedValue(uint16_t index
, const uint8_t scalePercent
);
65 void setLedValue(uint16_t index
, const uint8_t value
);
67 void setStripColor(const hsvColor_t
*color
);
68 void setStripColors(const hsvColor_t
*colors
);
70 void setUsedLedCount(unsigned ledCount
);
72 bool isWS2811LedStripReady(void);
74 #if defined(STM32F1) || defined(STM32F3)
75 extern uint8_t ledStripDMABuffer
[WS2811_DMA_BUFFER_SIZE
];
77 extern uint32_t ledStripDMABuffer
[WS2811_DMA_BUFFER_SIZE
];
79 extern volatile bool ws2811LedDataTransferInProgress
;
81 extern uint16_t BIT_COMPARE_1
;
82 extern uint16_t BIT_COMPARE_0
;