TLIGHT_PRODUCTS / WS281X

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

WS281X.cpp@36:0fe7917a832a, 2016-11-04 (annotated)

Committer:
mutech
Date:
Fri Nov 04 17:40:25 2016 +0000
Revision:
36:0fe7917a832a
Parent:
35:dffa06d09fdc
Child:
44:d89e5c59aeb0
WS2811/WS2812 Library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mutech 0:dff187a80020 1 /* WS281X.cpp (for LPC82X/STM32F0x/STM32F746xx)
mutech 0:dff187a80020 2 * mbed Microcontroller Library
mutech 0:dff187a80020 3 * Copyright (c) 2016 muetch, t.kuroki, MIT License
mutech 0:dff187a80020 4 *
mutech 0:dff187a80020 5 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
mutech 0:dff187a80020 6 * and associated documentation files (the "Software"), to deal in the Software without restriction,
mutech 0:dff187a80020 7 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
mutech 0:dff187a80020 8 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
mutech 0:dff187a80020 9 * furnished to do so, subject to the following conditions:
mutech 0:dff187a80020 10 *
mutech 0:dff187a80020 11 * The above copyright notice and this permission notice shall be included in all copies or
mutech 0:dff187a80020 12 * substantial portions of the Software.
mutech 0:dff187a80020 13 *
mutech 0:dff187a80020 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
mutech 0:dff187a80020 15 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
mutech 0:dff187a80020 16 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
mutech 0:dff187a80020 17 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mutech 0:dff187a80020 18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
mutech 27:bc79f444883b 19 *
mutech 27:bc79f444883b 20 * Rev 0.97 2016-09-07
mutech 28:b452e097da53 21 * Rev 0.98 2016-09-08
mutech 0:dff187a80020 22 */
mutech 0:dff187a80020 23
mutech 0:dff187a80020 24 #include "WS281X.h"
mutech 6:5aff0da4b663 25 #if defined(TARGET_STM)
mutech 0:dff187a80020 26 #include "pinmap.h"
mutech 6:5aff0da4b663 27 #endif
mutech 0:dff187a80020 28
mutech 32:64c391617f6c 29 #define USE_MALLOC 1 // 0:new, 1:malloc
mutech 32:64c391617f6c 30
mutech 4:4af895bb2979 31 // TARGET_STM32F7
mutech 0:dff187a80020 32 // TARGET_DISCO_F746NG
mutech 0:dff187a80020 33 // TARGET_NUCLEO_F746ZG
mutech 35:dffa06d09fdc 34 // TARGET_NUCLEO_F446RE
mutech 4:4af895bb2979 35 // TARGET_STM32F0
mutech 0:dff187a80020 36 // TARGET_NUCLEO_F030R8
mutech 0:dff187a80020 37 // TARGET_NUCLEO_F070RB
mutech 17:55c563d45bfa 38 // TARGET_NUCLEO_F072RB
mutech 35:dffa06d09fdc 39 // TARGET_NUCLEO_F091RC
mutech 4:4af895bb2979 40 // TARGET_LPC82X
mutech 0:dff187a80020 41 // TARGET_LPC824
mutech 0:dff187a80020 42
mutech 0:dff187a80020 43 //----------------------------------------------------------------------------
mutech 27:bc79f444883b 44 // 指定されたバッファの先頭からblock_size分をbuf_sizeが満杯になるまで繰り返しコピーする
mutech 27:bc79f444883b 45 template <class T>
mutech 27:bc79f444883b 46 static void repeat_buffer(T *buffer, int buf_size, int block_size = 1)
mutech 27:bc79f444883b 47 {
mutech 27:bc79f444883b 48 if (buffer && block_size > 0 && (uint16_t)block_size < buf_size)
mutech 27:bc79f444883b 49 {
mutech 27:bc79f444883b 50 T *dest = buffer + block_size;
mutech 27:bc79f444883b 51 int left = buf_size - block_size;
mutech 27:bc79f444883b 52 while (left > block_size)
mutech 27:bc79f444883b 53 {
mutech 27:bc79f444883b 54 memcpy(dest, buffer, block_size * sizeof(T));
mutech 27:bc79f444883b 55 dest += block_size;
mutech 27:bc79f444883b 56 left -= block_size;
mutech 27:bc79f444883b 57 block_size <<= 1; // 次回は２倍のサイズの転送
mutech 27:bc79f444883b 58 }
mutech 27:bc79f444883b 59 memcpy(dest, buffer, left * sizeof(T));
mutech 27:bc79f444883b 60 }
mutech 27:bc79f444883b 61 }
mutech 27:bc79f444883b 62
mutech 27:bc79f444883b 63 //----------------------------------------------------------------------------
mutech 28:b452e097da53 64 WS281X::WS281X(PinName wirePin, PinMode pinMode, int maxPixels, RGBOrder order)
mutech 32:64c391617f6c 65 : _wirePin(wirePin), _gpio(), _owned_buffer(false)
mutech 9:087006b19049 66 {
mutech 9:087006b19049 67 gpio_init_inout(&_gpio, wirePin, PIN_OUTPUT, pinMode, 0);
mutech 9:087006b19049 68 #if defined(TARGET_STM)
mutech 9:087006b19049 69 pin_mode_ex(wirePin, pinMode);
mutech 9:087006b19049 70 #endif
mutech 9:087006b19049 71
mutech 28:b452e097da53 72 rgbOrder(order);
mutech 9:087006b19049 73 _dummyPixel = 0;
mutech 20:28fe0d0d081b 74 setPixelBuffer(0, maxPixels);
mutech 9:087006b19049 75 }
mutech 9:087006b19049 76
mutech 9:087006b19049 77 WS281X::WS281X(PinName wirePin, PinMode pinMode,
mutech 28:b452e097da53 78 RGBColor *buffer, int maxPixels, RGBOrder order)
mutech 32:64c391617f6c 79 : _wirePin(wirePin), _gpio(), _owned_buffer(false)
mutech 0:dff187a80020 80 {
mutech 0:dff187a80020 81 gpio_init_inout(&_gpio, wirePin, PIN_OUTPUT, pinMode, 0);
mutech 0:dff187a80020 82 #if defined(TARGET_STM)
mutech 0:dff187a80020 83 pin_mode_ex(wirePin, pinMode);
mutech 0:dff187a80020 84 #endif
mutech 0:dff187a80020 85
mutech 28:b452e097da53 86 rgbOrder(order);
mutech 0:dff187a80020 87 _dummyPixel = 0;
mutech 27:bc79f444883b 88 setPixelBuffer(buffer, maxPixels);
mutech 0:dff187a80020 89 }
mutech 0:dff187a80020 90
mutech 0:dff187a80020 91 WS281X::~WS281X()
mutech 0:dff187a80020 92 {
mutech 32:64c391617f6c 93 setPixelBuffer(0, 0);
mutech 9:087006b19049 94 }
mutech 9:087006b19049 95
mutech 27:bc79f444883b 96 void WS281X::setPixelBuffer(RGBColor *buffer, int maxPixels)
mutech 9:087006b19049 97 {
mutech 32:64c391617f6c 98 if (_owned_buffer && _pixels)
mutech 32:64c391617f6c 99 {
mutech 32:64c391617f6c 100 #if USE_MALLOC
mutech 32:64c391617f6c 101 free(_pixels);
mutech 32:64c391617f6c 102 #else
mutech 0:dff187a80020 103 delete[] _pixels;
mutech 32:64c391617f6c 104 #endif
mutech 32:64c391617f6c 105 }
mutech 32:64c391617f6c 106 _owned_buffer = false;
mutech 32:64c391617f6c 107 _maxPixels = (maxPixels < 0) ? 0 : (maxPixels > MAX_PIXELS) ? MAX_PIXELS : maxPixels;
mutech 32:64c391617f6c 108 _pixels = (!_maxPixels) ? NULL : buffer;
mutech 9:087006b19049 109
mutech 20:28fe0d0d081b 110 if (!_pixels && _maxPixels > 0)
mutech 9:087006b19049 111 {
mutech 32:64c391617f6c 112 #if USE_MALLOC
mutech 32:64c391617f6c 113 _pixels = static_cast<RGBColor*>(malloc(sizeof(RGBColor)*_maxPixels));
mutech 32:64c391617f6c 114 if (_pixels)
mutech 32:64c391617f6c 115 _owned_buffer = true;
mutech 32:64c391617f6c 116 else
mutech 32:64c391617f6c 117 _maxPixels = 0;
mutech 32:64c391617f6c 118 #else
mutech 20:28fe0d0d081b 119 _pixels = new RGBColor[_maxPixels];
mutech 32:64c391617f6c 120 _owned_buffer = true;
mutech 32:64c391617f6c 121 #endif
mutech 9:087006b19049 122 }
mutech 20:28fe0d0d081b 123 _numPixels = _maxPixels;
mutech 20:28fe0d0d081b 124 clear();
mutech 20:28fe0d0d081b 125 }
mutech 9:087006b19049 126
mutech 27:bc79f444883b 127 int WS281X::numPixels(int value)
mutech 20:28fe0d0d081b 128 {
mutech 27:bc79f444883b 129 if (value >= 0)
mutech 27:bc79f444883b 130 _numPixels = (value > _maxPixels) ? _maxPixels : value;
mutech 27:bc79f444883b 131 return _numPixels;
mutech 0:dff187a80020 132 }
mutech 0:dff187a80020 133
mutech 0:dff187a80020 134 #if defined(TARGET_STM)
mutech 6:5aff0da4b663 135 /**
mutech 6:5aff0da4b663 136 * Configure pin pull-up/pull-down/OpenDrain
mutech 6:5aff0da4b663 137 * typedef enum {
mutech 6:5aff0da4b663 138 * PullNone = 0,
mutech 6:5aff0da4b663 139 * PullUp = 1,
mutech 6:5aff0da4b663 140 * PullDown = 2,
mutech 6:5aff0da4b663 141 * OpenDrain = 3,
mutech 6:5aff0da4b663 142 * PullDefault = PullNone
mutech 6:5aff0da4b663 143 * } PinMode;
mutech 6:5aff0da4b663 144 */
mutech 0:dff187a80020 145 void WS281X::pin_mode_ex(PinName pin, PinMode mode)
mutech 0:dff187a80020 146 {
mutech 6:5aff0da4b663 147 int port_index = STM_PORT(pin);
mutech 6:5aff0da4b663 148 int pin_index = STM_PIN(pin);
mutech 6:5aff0da4b663 149 int offset = pin_index << 1;
mutech 6:5aff0da4b663 150 GPIO_TypeDef * port_reg = ((GPIO_TypeDef *) (GPIOA_BASE + (port_index << 10)));
mutech 6:5aff0da4b663 151
mutech 6:5aff0da4b663 152 // Configure pull-up/pull-down resistors
mutech 6:5aff0da4b663 153 uint32_t pupd = (uint32_t)mode & 3;
mutech 6:5aff0da4b663 154 if (pupd > 2)
mutech 6:5aff0da4b663 155 pupd = 0; // Open-drain = No pull-up/No pull-down
mutech 6:5aff0da4b663 156
mutech 0:dff187a80020 157 if (mode == OpenDrain)
mutech 0:dff187a80020 158 {
mutech 6:5aff0da4b663 159 port_reg->PUPDR &= ~(0x3 << offset); // Open-drain = No pull-up/No pull-down
mutech 6:5aff0da4b663 160 port_reg->OTYPER |= 1 << pin_index;
mutech 0:dff187a80020 161 }
mutech 0:dff187a80020 162 else
mutech 6:5aff0da4b663 163 {
mutech 6:5aff0da4b663 164 port_reg->OTYPER &= ~(1 << pin_index);
mutech 6:5aff0da4b663 165 // pin_mode(pin, mode);
mutech 6:5aff0da4b663 166 port_reg->PUPDR &= ~(0x3 << offset);
mutech 6:5aff0da4b663 167 port_reg->PUPDR |= (mode & 0x03) << offset;
mutech 6:5aff0da4b663 168 }
mutech 0:dff187a80020 169 }
mutech 0:dff187a80020 170 #endif
mutech 0:dff187a80020 171
mutech 28:b452e097da53 172 WS281X::RGBOrder WS281X::rgbOrder(WS281X::RGBOrder order)
mutech 0:dff187a80020 173 {
mutech 29:a362df191524 174 if (order != READ_ORDER)
mutech 0:dff187a80020 175 {
mutech 29:a362df191524 176 _rgbOrder = order;
mutech 29:a362df191524 177 switch(order)
mutech 29:a362df191524 178 {
mutech 29:a362df191524 179 case RGB: _1st = 0; _2nd = 1; _3rd = 2; break; // WS2811
mutech 29:a362df191524 180 case RBG: _1st = 0; _2nd = 2; _3rd = 1; break;
mutech 29:a362df191524 181 case GRB: _1st = 1; _2nd = 0; _3rd = 2; break; // WS2812
mutech 29:a362df191524 182 case GBR: _1st = 2; _2nd = 0; _3rd = 1; break;
mutech 29:a362df191524 183 case BRG: _1st = 1; _2nd = 2; _3rd = 0; break;
mutech 29:a362df191524 184 case BGR: _1st = 2; _2nd = 1; _3rd = 0; break;
mutech 29:a362df191524 185 default:
mutech 29:a362df191524 186 _1st = 0; _2nd = 1; _3rd = 2;
mutech 29:a362df191524 187 _rgbOrder = GRB; // WS2812
mutech 29:a362df191524 188 break;
mutech 29:a362df191524 189 }
mutech 0:dff187a80020 190 }
mutech 28:b452e097da53 191 return _rgbOrder;
mutech 0:dff187a80020 192 }
mutech 0:dff187a80020 193
mutech 17:55c563d45bfa 194 //#define _nop1() __nop()
mutech 19:48ac403f172f 195 #define _nop1() do {asm volatile ("nop"); } while(0)
mutech 17:55c563d45bfa 196 #define _nop2() _nop1(); _nop1()
mutech 0:dff187a80020 197 #define _nop3() _nop1(); _nop2()
mutech 0:dff187a80020 198 #define _nop4() _nop2(); _nop2()
mutech 0:dff187a80020 199 #define _nop5() _nop1(); _nop4()
mutech 0:dff187a80020 200 #define _nop6() _nop2(); _nop4()
mutech 0:dff187a80020 201 #define _nop7() _nop3(); _nop4()
mutech 0:dff187a80020 202 #define _nop8() _nop4(); _nop4()
mutech 0:dff187a80020 203 #define _nop9() _nop1(); _nop8()
mutech 0:dff187a80020 204 #define _nop10() _nop2(); _nop8()
mutech 0:dff187a80020 205 #define _nop11() _nop3(); _nop8()
mutech 0:dff187a80020 206 #define _nop12() _nop4(); _nop8()
mutech 0:dff187a80020 207 #define _nop13() _nop5(); _nop8()
mutech 0:dff187a80020 208 #define _nop14() _nop6(); _nop8()
mutech 0:dff187a80020 209 #define _nop15() _nop7(); _nop8()
mutech 0:dff187a80020 210 #define _nop16() _nop8(); _nop8()
mutech 0:dff187a80020 211
mutech 4:4af895bb2979 212 #if defined(TARGET_LPC82X)
mutech 5:8e6835a94e10 213 // LPCXpresso824-MAX (30MHz)
mutech 0:dff187a80020 214 #define DELAY_T0H() do{ _nop2(); }while(0)
mutech 0:dff187a80020 215 #define DELAY_T1H() do{ _nop6(); }while(0)
mutech 0:dff187a80020 216 #define DELAY_TLOW() do{ _nop6(); }while(0)
mutech 0:dff187a80020 217 #define DELAY_TLOW2() //do{ _nop2(); }while(0)
mutech 4:4af895bb2979 218 #define DELAY_SPACE() do{ _nop4(); }while(0)
mutech 4:4af895bb2979 219 #define DELAY_NEXT() //do{ _nop1(); }while(0)
mutech 0:dff187a80020 220 #endif
mutech 0:dff187a80020 221
mutech 0:dff187a80020 222 #if defined(TARGET_STM32F0)
mutech 5:8e6835a94e10 223 // NUCLEO-F030R8 (48MHz)
mutech 5:8e6835a94e10 224 // NUCLEO-F070RB (48MHz)
mutech 23:d4061c4b6238 225 // NUCLEO-F072RB (48MHz)
mutech 0:dff187a80020 226 #define DELAY_T0H() do{ _nop8(); _nop4(); }while(0)
mutech 0:dff187a80020 227 #define DELAY_T1H() do{ _nop8(); _nop8(); }while(0)
mutech 0:dff187a80020 228 #define DELAY_TLOW() do{ _nop16(); }while(0)
mutech 0:dff187a80020 229 #define DELAY_TLOW2() //do{ _nop8(); _nop4(); }while(0)
mutech 4:4af895bb2979 230 #define DELAY_SPACE() do{ _nop8(); _nop6(); }while(0)
mutech 4:4af895bb2979 231 #define DELAY_NEXT() do{ _nop8(); }while(0)
mutech 0:dff187a80020 232 #endif
mutech 0:dff187a80020 233
mutech 6:5aff0da4b663 234 #if defined(TARGET_NUCLEO_F446RE)
mutech 6:5aff0da4b663 235 // NUCLEO-F446RE (180MHz)
mutech 6:5aff0da4b663 236 #define USE_DELAYFUNC 1
mutech 6:5aff0da4b663 237 #define T0H (18)
mutech 6:5aff0da4b663 238 #define T0L (58-T0H)
mutech 6:5aff0da4b663 239 #define T1H (40)
mutech 6:5aff0da4b663 240 #define T1L (58-T1H)
mutech 6:5aff0da4b663 241
mutech 6:5aff0da4b663 242 #define DELAY_T0H() _delay(T0H)
mutech 6:5aff0da4b663 243 #define DELAY_T1H() _delay(T1H-T0H)
mutech 6:5aff0da4b663 244 #define DELAY_TLOW() _delay(T1L)
mutech 6:5aff0da4b663 245 #define DELAY_TLOW2() //DELAY_TLOW()
mutech 6:5aff0da4b663 246 #define DELAY_SPACE() _delay(T1L-2)
mutech 6:5aff0da4b663 247 #define DELAY_NEXT() _delay(16)
mutech 6:5aff0da4b663 248 #endif
mutech 6:5aff0da4b663 249
mutech 4:4af895bb2979 250 #if defined(TARGET_NUCLEO_F746ZG)
mutech 4:4af895bb2979 251 // NUCLEO-F746ZG (216MHz)
mutech 6:5aff0da4b663 252 #define USE_DELAYFUNC 1
mutech 0:dff187a80020 253 #define T0H (35)
mutech 5:8e6835a94e10 254 #define T0L (130-T0H)
mutech 4:4af895bb2979 255 #define T1H (75)
mutech 5:8e6835a94e10 256 #define T1L (130-T1H)
mutech 0:dff187a80020 257
mutech 0:dff187a80020 258 #define DELAY_T0H() _delay(T0H)
mutech 0:dff187a80020 259 #define DELAY_T1H() _delay(T1H-T0H)
mutech 0:dff187a80020 260 #define DELAY_TLOW() _delay(T1L)
mutech 0:dff187a80020 261 #define DELAY_TLOW2() //DELAY_TLOW()
mutech 5:8e6835a94e10 262 #define DELAY_SPACE() _delay(T1L+20)
mutech 4:4af895bb2979 263 #define DELAY_NEXT() _delay(50)
mutech 4:4af895bb2979 264 #endif
mutech 0:dff187a80020 265
mutech 4:4af895bb2979 266 #if defined(TARGET_DISCO_F746NG)
mutech 4:4af895bb2979 267 // TARGET_DISCO_F746NG (216MHz)
mutech 6:5aff0da4b663 268 #define USE_DELAYFUNC 1
mutech 4:4af895bb2979 269 #define T0H (35)
mutech 6:5aff0da4b663 270 #define T0L (125-T0H)
mutech 6:5aff0da4b663 271 #define T1H (90)
mutech 6:5aff0da4b663 272 #define T1L (125-T1H)
mutech 4:4af895bb2979 273
mutech 4:4af895bb2979 274 #define DELAY_T0H() _delay(T0H)
mutech 4:4af895bb2979 275 #define DELAY_T1H() _delay(T1H-T0H)
mutech 4:4af895bb2979 276 #define DELAY_TLOW() _delay(T1L)
mutech 4:4af895bb2979 277 #define DELAY_TLOW2() //DELAY_TLOW()
mutech 6:5aff0da4b663 278 #define DELAY_SPACE() _delay(T1L-5)
mutech 6:5aff0da4b663 279 #define DELAY_NEXT() _delay(40)
mutech 4:4af895bb2979 280 #endif
mutech 4:4af895bb2979 281
mutech 6:5aff0da4b663 282 #if defined(USE_DELAYFUNC) && (USE_DELAYFUNC != 0)
mutech 6:5aff0da4b663 283 static inline __attribute__((always_inline))
mutech 6:5aff0da4b663 284 void _delay(int value)
mutech 0:dff187a80020 285 {
mutech 22:0846aefbeeae 286 do { _nop1(); } while (--value);
mutech 0:dff187a80020 287 }
mutech 0:dff187a80020 288 #endif
mutech 0:dff187a80020 289
mutech 0:dff187a80020 290 inline __attribute__((always_inline))
mutech 0:dff187a80020 291 void WS281X::writeByte(__IO regsize_t *reg_set, __IO regsize_t *reg_clr, regsize_t *mask, uint8_t value)
mutech 0:dff187a80020 292 {
mutech 0:dff187a80020 293 do
mutech 0:dff187a80020 294 {
mutech 6:5aff0da4b663 295 #if 1
mutech 0:dff187a80020 296 // bit7
mutech 0:dff187a80020 297 *reg_set = mask[0];
mutech 0:dff187a80020 298 DELAY_T0H();
mutech 0:dff187a80020 299 *reg_clr = mask[(value >> 7) & 1];
mutech 0:dff187a80020 300 DELAY_T1H();
mutech 0:dff187a80020 301 *reg_clr = mask[0];
mutech 0:dff187a80020 302 DELAY_TLOW();
mutech 0:dff187a80020 303
mutech 0:dff187a80020 304 // bit6
mutech 0:dff187a80020 305 *reg_set = mask[0];
mutech 0:dff187a80020 306 DELAY_T0H();
mutech 0:dff187a80020 307 *reg_clr = mask[(value >> 6) & 1];
mutech 0:dff187a80020 308 DELAY_T1H();
mutech 0:dff187a80020 309 *reg_clr = mask[0];
mutech 0:dff187a80020 310 DELAY_TLOW();
mutech 0:dff187a80020 311
mutech 0:dff187a80020 312 // bit5
mutech 0:dff187a80020 313 *reg_set = mask[0];
mutech 0:dff187a80020 314 DELAY_T0H();
mutech 0:dff187a80020 315 *reg_clr = mask[(value >> 5) & 1];
mutech 0:dff187a80020 316 DELAY_T1H();
mutech 0:dff187a80020 317 *reg_clr = mask[0];
mutech 0:dff187a80020 318 DELAY_TLOW();
mutech 0:dff187a80020 319
mutech 0:dff187a80020 320 // bit4
mutech 0:dff187a80020 321 *reg_set = mask[0];
mutech 0:dff187a80020 322 DELAY_T0H();
mutech 0:dff187a80020 323 *reg_clr = mask[(value >> 4) & 1];
mutech 0:dff187a80020 324 DELAY_T1H();
mutech 0:dff187a80020 325 *reg_clr = mask[0];
mutech 0:dff187a80020 326 DELAY_TLOW();
mutech 6:5aff0da4b663 327 #endif
mutech 0:dff187a80020 328
mutech 0:dff187a80020 329 // bit3
mutech 0:dff187a80020 330 *reg_set = mask[0];
mutech 0:dff187a80020 331 DELAY_T0H();
mutech 0:dff187a80020 332 *reg_clr = mask[(value >> 3) & 1];
mutech 0:dff187a80020 333 DELAY_T1H();
mutech 0:dff187a80020 334 *reg_clr = mask[0];
mutech 0:dff187a80020 335 DELAY_TLOW();
mutech 0:dff187a80020 336
mutech 0:dff187a80020 337 // bit2
mutech 0:dff187a80020 338 *reg_set = mask[0];
mutech 0:dff187a80020 339 DELAY_T0H();
mutech 0:dff187a80020 340 *reg_clr = mask[(value >> 2) & 1];
mutech 0:dff187a80020 341 DELAY_T1H();
mutech 0:dff187a80020 342 *reg_clr = mask[0];
mutech 0:dff187a80020 343 DELAY_TLOW();
mutech 0:dff187a80020 344
mutech 0:dff187a80020 345 // bit1
mutech 0:dff187a80020 346 *reg_set = mask[0];
mutech 0:dff187a80020 347 DELAY_T0H();
mutech 0:dff187a80020 348 *reg_clr = mask[(value >> 1) & 1];
mutech 0:dff187a80020 349 DELAY_T1H();
mutech 0:dff187a80020 350 *reg_clr = mask[0];
mutech 0:dff187a80020 351 DELAY_TLOW();
mutech 0:dff187a80020 352
mutech 0:dff187a80020 353 // bit0
mutech 0:dff187a80020 354 *reg_set = mask[0];
mutech 0:dff187a80020 355 DELAY_T0H();
mutech 0:dff187a80020 356 *reg_clr = mask[(value >> 0) & 1];
mutech 0:dff187a80020 357 DELAY_T1H();
mutech 0:dff187a80020 358 *reg_clr = mask[0];
mutech 0:dff187a80020 359 DELAY_TLOW2();
mutech 0:dff187a80020 360
mutech 0:dff187a80020 361 } while (0);
mutech 0:dff187a80020 362 }
mutech 0:dff187a80020 363
mutech 0:dff187a80020 364 void WS281X::show()
mutech 0:dff187a80020 365 {
mutech 0:dff187a80020 366 // CPU_FREQ = 30MHz -> 0.0333us/cycle
mutech 0:dff187a80020 367 // WS2811 0: 0.25us+1.0us, 1: 1.0us+0.25us
mutech 0:dff187a80020 368 // WS2812 0: 0.45us+0.8us, 1: 0.8us+0.45us
mutech 0:dff187a80020 369
mutech 9:087006b19049 370 if (!_pixels)
mutech 9:087006b19049 371 return;
mutech 9:087006b19049 372
mutech 0:dff187a80020 373 #if defined(TARGET_NXP)
mutech 0:dff187a80020 374 __IO uint32_t *reg_set = _gpio.reg_set;
mutech 0:dff187a80020 375 __IO uint32_t *reg_clr = _gpio.reg_clr;
mutech 0:dff187a80020 376 uint32_t mask[2] = { _gpio.mask, 0 };
mutech 0:dff187a80020 377 #elif defined(TARGET_STM32F0) || defined(TARGET_STM32F1)
mutech 0:dff187a80020 378 __IO uint32_t *reg_set = _gpio.reg_set;
mutech 0:dff187a80020 379 __IO uint32_t *reg_clr = _gpio.reg_clr;
mutech 0:dff187a80020 380 uint32_t mask[2] = { _gpio.mask, 0 };
mutech 0:dff187a80020 381 #elif defined(TARGET_STM)
mutech 0:dff187a80020 382 __IO uint16_t *reg_set = (__IO uint16_t *)_gpio.reg_set_clr;
mutech 0:dff187a80020 383 __IO uint16_t *reg_clr = reg_set + 1;
mutech 0:dff187a80020 384 uint16_t mask[2] = { _gpio.mask, 0 };
mutech 0:dff187a80020 385 #endif
mutech 0:dff187a80020 386
mutech 0:dff187a80020 387 uint8_t *pix = (uint8_t *)_pixels;
mutech 0:dff187a80020 388 uint8_t *end = pix + (_numPixels * sizeof(_pixels[0]));
mutech 0:dff187a80020 389
mutech 0:dff187a80020 390 __disable_irq(); // Disable interrupts temporarily because we don't want our pulse timing to be messed up.
mutech 0:dff187a80020 391
mutech 0:dff187a80020 392 uint8_t value;
mutech 0:dff187a80020 393 do
mutech 0:dff187a80020 394 {
mutech 0:dff187a80020 395 value = pix[_1st];
mutech 0:dff187a80020 396 writeByte(reg_set, reg_clr, mask, value);
mutech 0:dff187a80020 397 DELAY_SPACE();
mutech 0:dff187a80020 398
mutech 0:dff187a80020 399 value = pix[_2nd];
mutech 0:dff187a80020 400 writeByte(reg_set, reg_clr, mask, value);
mutech 0:dff187a80020 401 DELAY_SPACE();
mutech 0:dff187a80020 402
mutech 0:dff187a80020 403 value = pix[_3rd];
mutech 0:dff187a80020 404 writeByte(reg_set, reg_clr, mask, value);
mutech 0:dff187a80020 405 pix += sizeof(_pixels[0]);
mutech 0:dff187a80020 406 DELAY_NEXT();
mutech 0:dff187a80020 407 } while (pix < end);
mutech 0:dff187a80020 408
mutech 0:dff187a80020 409 __enable_irq(); // Re-enable interrupts now that we are done.
mutech 0:dff187a80020 410
mutech 0:dff187a80020 411 wait_us(50);
mutech 0:dff187a80020 412 }
mutech 0:dff187a80020 413
mutech 8:0617f524d67d 414 // 指定位置のピクセルへ色配列を指定サイズ分をコピーする
mutech 27:bc79f444883b 415 void WS281X::setPixels(int index, RGBColor *color, int len)
mutech 8:0617f524d67d 416 {
mutech 35:dffa06d09fdc 417 int numPixels = static_cast<int>(_numPixels);
mutech 35:dffa06d09fdc 418 if (_pixels && len > 0 && index < numPixels && (index + len) >= 0)
mutech 22:0846aefbeeae 419 {
mutech 34:5a141ed5d52a 420 if (index < 0)
mutech 34:5a141ed5d52a 421 {
mutech 35:dffa06d09fdc 422 len += index;
mutech 35:dffa06d09fdc 423 color -= index;
mutech 35:dffa06d09fdc 424 index = 0;
mutech 34:5a141ed5d52a 425 }
mutech 35:dffa06d09fdc 426 if (index + len > numPixels)
mutech 35:dffa06d09fdc 427 len = numPixels - index;
mutech 22:0846aefbeeae 428 memcpy(&_pixels[index], color, len * sizeof(_pixels[0]));
mutech 22:0846aefbeeae 429 }
mutech 21:77275089d837 430 }
mutech 21:77275089d837 431
mutech 27:bc79f444883b 432 void WS281X::setPixels(int index, HSVColor *color, int len)
mutech 21:77275089d837 433 {
mutech 35:dffa06d09fdc 434 int numPixels = static_cast<int>(_numPixels);
mutech 35:dffa06d09fdc 435 if (_pixels && len > 0 && index < numPixels && (index + len) >= 0)
mutech 8:0617f524d67d 436 {
mutech 34:5a141ed5d52a 437 if (index < 0)
mutech 34:5a141ed5d52a 438 {
mutech 35:dffa06d09fdc 439 len += index;
mutech 35:dffa06d09fdc 440 color -= index;
mutech 35:dffa06d09fdc 441 index = 0;
mutech 34:5a141ed5d52a 442 }
mutech 35:dffa06d09fdc 443 if (index + len > numPixels)
mutech 35:dffa06d09fdc 444 len = numPixels - index;
mutech 24:f93a61e727a3 445 RGBColor *dest = &_pixels[index];
mutech 22:0846aefbeeae 446 do
mutech 22:0846aefbeeae 447 {
mutech 24:f93a61e727a3 448 *dest++ = *color++;
mutech 22:0846aefbeeae 449 } while (--len);
mutech 22:0846aefbeeae 450 }
mutech 8:0617f524d67d 451 }
mutech 8:0617f524d67d 452
mutech 27:bc79f444883b 453 // 指定色を指定位置のピクセルから指定サイズ分書き込む
mutech 28:b452e097da53 454 void WS281X::fillPixels(int index, const RGBColor color, int len)
mutech 8:0617f524d67d 455 {
mutech 36:0fe7917a832a 456 int numPixels = static_cast<int>(_numPixels);
mutech 36:0fe7917a832a 457 if (_pixels && len > 0 && index < numPixels && (index + len) >= 0)
mutech 8:0617f524d67d 458 {
mutech 36:0fe7917a832a 459 if (index < 0)
mutech 36:0fe7917a832a 460 {
mutech 36:0fe7917a832a 461 len += index;
mutech 36:0fe7917a832a 462 index = 0;
mutech 36:0fe7917a832a 463 }
mutech 36:0fe7917a832a 464 if (index + len > numPixels)
mutech 36:0fe7917a832a 465 len = numPixels - index;
mutech 27:bc79f444883b 466 _pixels[index] = color;
mutech 27:bc79f444883b 467 repeat_buffer<RGBColor>(_pixels + index, len, 1);
mutech 24:f93a61e727a3 468 }
mutech 8:0617f524d67d 469 }
mutech 8:0617f524d67d 470
mutech 27:bc79f444883b 471 // 指定位置のピクセルから指定色を指定サイズ分書き込む
mutech 28:b452e097da53 472 void WS281X::fillPixels(int index, const HSVColor color, int len)
mutech 27:bc79f444883b 473 {
mutech 28:b452e097da53 474 fillPixels(index, color, len);
mutech 27:bc79f444883b 475 }
mutech 27:bc79f444883b 476
mutech 0:dff187a80020 477 // 先頭から指定サイズ分のブロックをバッファの最後までコピーする
mutech 27:bc79f444883b 478 void WS281X::repeatPixels(int block_size)
mutech 0:dff187a80020 479 {
mutech 22:0846aefbeeae 480 if (_pixels && block_size > 0 && block_size < _numPixels)
mutech 0:dff187a80020 481 {
mutech 27:bc79f444883b 482 repeat_buffer<RGBColor>(_pixels, _numPixels, block_size);
mutech 0:dff187a80020 483 }
mutech 0:dff187a80020 484 }
mutech 0:dff187a80020 485
mutech 27:bc79f444883b 486 void WS281X::repeatPixels(RGBColor *source, int size)
mutech 24:f93a61e727a3 487 {
mutech 24:f93a61e727a3 488 if (_pixels && source && size > 0)
mutech 24:f93a61e727a3 489 {
mutech 24:f93a61e727a3 490 if (size > _numPixels)
mutech 24:f93a61e727a3 491 size = _numPixels;
mutech 24:f93a61e727a3 492 memcpy(_pixels, source, size * sizeof(_pixels[0]));
mutech 27:bc79f444883b 493 repeat_buffer<RGBColor>(_pixels, _numPixels, size);
mutech 24:f93a61e727a3 494 }
mutech 24:f93a61e727a3 495 }
mutech 24:f93a61e727a3 496
mutech 27:bc79f444883b 497 void WS281X::repeatPixels(HSVColor *source, int size)
mutech 24:f93a61e727a3 498 {
mutech 24:f93a61e727a3 499 if (_pixels && source && size > 0)
mutech 24:f93a61e727a3 500 {
mutech 24:f93a61e727a3 501 if (size > _numPixels)
mutech 24:f93a61e727a3 502 size = _numPixels;
mutech 24:f93a61e727a3 503 for (int i = 0; i < size; ++i)
mutech 24:f93a61e727a3 504 _pixels[i] = *source++;
mutech 27:bc79f444883b 505 repeat_buffer<RGBColor>(_pixels, _numPixels, size);
mutech 9:087006b19049 506 }
mutech 0:dff187a80020 507 }
mutech 0:dff187a80020 508
mutech 28:b452e097da53 509 void WS281X::makeGradation(int index, RGBColor from, RGBColor to, int len)
mutech 28:b452e097da53 510 {
mutech 28:b452e097da53 511 if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
mutech 28:b452e097da53 512 return;
mutech 28:b452e097da53 513
mutech 28:b452e097da53 514 int end = len;
mutech 28:b452e097da53 515 if (index + end > _numPixels)
mutech 28:b452e097da53 516 end = _numPixels - index;
mutech 28:b452e097da53 517
mutech 28:b452e097da53 518 RGBColor color;
mutech 28:b452e097da53 519 RGBColor *dest = _pixels;
mutech 28:b452e097da53 520 if (index > 0)
mutech 28:b452e097da53 521 dest += index;
mutech 28:b452e097da53 522 for (int i = (index < 0) ? -index : 0; i < end; ++i)
mutech 28:b452e097da53 523 {
mutech 28:b452e097da53 524 int j = len - i;
mutech 28:b452e097da53 525 color.red = ((from.red * j) + (to.red * i)) / len;
mutech 28:b452e097da53 526 color.green = ((from.green * j) + (to.green * i)) / len;
mutech 28:b452e097da53 527 color.blue = ((from.blue * j) + (to.blue * i)) / len;
mutech 28:b452e097da53 528 *dest++ = GammaColor(color);
mutech 28:b452e097da53 529 }
mutech 28:b452e097da53 530 }
mutech 28:b452e097da53 531
mutech 28:b452e097da53 532 void WS281X::makeRainbow(int index, HSVColor color, int len, int direction)
mutech 28:b452e097da53 533 {
mutech 28:b452e097da53 534 if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
mutech 28:b452e097da53 535 return;
mutech 28:b452e097da53 536
mutech 28:b452e097da53 537 int end = len;
mutech 28:b452e097da53 538 if (index + end > _numPixels)
mutech 28:b452e097da53 539 end = _numPixels - index;
mutech 28:b452e097da53 540
mutech 28:b452e097da53 541 HSVColor hsv(color);
mutech 28:b452e097da53 542 RGBColor *dest = _pixels;
mutech 28:b452e097da53 543 if (index > 0)
mutech 28:b452e097da53 544 dest += index;
mutech 28:b452e097da53 545 direction = (direction >= 0) ? -3600 : 3600;
mutech 28:b452e097da53 546 for (int i = (index < 0) ? -index : 0; i < end; ++i)
mutech 28:b452e097da53 547 {
mutech 28:b452e097da53 548 hsv.hue = color.hue + direction * i / len;
mutech 28:b452e097da53 549 *dest++ = GammaColor(hsv);
mutech 28:b452e097da53 550 }
mutech 28:b452e097da53 551 }
mutech 28:b452e097da53 552
mutech 0:dff187a80020 553 // 指定色でバッファを埋めた後表示
mutech 8:0617f524d67d 554 void WS281X::show(const RGBColor color)
mutech 0:dff187a80020 555 {
mutech 0:dff187a80020 556 clear(color);
mutech 0:dff187a80020 557 show();
mutech 0:dff187a80020 558 }
mutech 0:dff187a80020 559
mutech 0:dff187a80020 560 //----------------------------------------------------------------------------