TLIGHT_PRODUCTS / WS281X

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WS281X.cpp@29:a362df191524, 2016-09-07 (annotated)

Committer:
mutech
Date:
Wed Sep 07 22:21:27 2016 +0000
Revision:
29:a362df191524
Parent:
28:b452e097da53
Child:
32:64c391617f6c
WS2811/WS2812 support 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 4:4af895bb2979 29 // TARGET_STM32F7
mutech 0:dff187a80020 30 // TARGET_DISCO_F746NG
mutech 0:dff187a80020 31 // TARGET_NUCLEO_F746ZG
mutech 4:4af895bb2979 32 // TARGET_STM32F0
mutech 0:dff187a80020 33 // TARGET_NUCLEO_F030R8
mutech 0:dff187a80020 34 // TARGET_NUCLEO_F070RB
mutech 17:55c563d45bfa 35 // TARGET_NUCLEO_F072RB
mutech 4:4af895bb2979 36 // TARGET_LPC82X
mutech 0:dff187a80020 37 // TARGET_LPC824
mutech 0:dff187a80020 38
mutech 0:dff187a80020 39 //----------------------------------------------------------------------------
mutech 27:bc79f444883b 40 // 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 41 template <class T>
mutech 27:bc79f444883b 42 static void repeat_buffer(T *buffer, int buf_size, int block_size = 1)
mutech 27:bc79f444883b 43 {
mutech 27:bc79f444883b 44 if (buffer && block_size > 0 && (uint16_t)block_size < buf_size)
mutech 27:bc79f444883b 45 {
mutech 27:bc79f444883b 46 T *dest = buffer + block_size;
mutech 27:bc79f444883b 47 int left = buf_size - block_size;
mutech 27:bc79f444883b 48 while (left > block_size)
mutech 27:bc79f444883b 49 {
mutech 27:bc79f444883b 50 memcpy(dest, buffer, block_size * sizeof(T));
mutech 27:bc79f444883b 51 dest += block_size;
mutech 27:bc79f444883b 52 left -= block_size;
mutech 27:bc79f444883b 53 block_size <<= 1; // 次回は２倍のサイズの転送
mutech 27:bc79f444883b 54 }
mutech 27:bc79f444883b 55 memcpy(dest, buffer, left * sizeof(T));
mutech 27:bc79f444883b 56 }
mutech 27:bc79f444883b 57 }
mutech 27:bc79f444883b 58
mutech 27:bc79f444883b 59 //----------------------------------------------------------------------------
mutech 28:b452e097da53 60 WS281X::WS281X(PinName wirePin, PinMode pinMode, int maxPixels, RGBOrder order)
mutech 9:087006b19049 61 : _wirePin(wirePin), _gpio(), _buf_owner(false)
mutech 9:087006b19049 62 {
mutech 9:087006b19049 63 gpio_init_inout(&_gpio, wirePin, PIN_OUTPUT, pinMode, 0);
mutech 9:087006b19049 64 #if defined(TARGET_STM)
mutech 9:087006b19049 65 pin_mode_ex(wirePin, pinMode);
mutech 9:087006b19049 66 #endif
mutech 9:087006b19049 67
mutech 28:b452e097da53 68 rgbOrder(order);
mutech 9:087006b19049 69 _dummyPixel = 0;
mutech 20:28fe0d0d081b 70 setPixelBuffer(0, maxPixels);
mutech 9:087006b19049 71 }
mutech 9:087006b19049 72
mutech 9:087006b19049 73 WS281X::WS281X(PinName wirePin, PinMode pinMode,
mutech 28:b452e097da53 74 RGBColor *buffer, int maxPixels, RGBOrder order)
mutech 9:087006b19049 75 : _wirePin(wirePin), _gpio(), _buf_owner(false)
mutech 0:dff187a80020 76 {
mutech 0:dff187a80020 77 gpio_init_inout(&_gpio, wirePin, PIN_OUTPUT, pinMode, 0);
mutech 0:dff187a80020 78 #if defined(TARGET_STM)
mutech 0:dff187a80020 79 pin_mode_ex(wirePin, pinMode);
mutech 0:dff187a80020 80 #endif
mutech 0:dff187a80020 81
mutech 28:b452e097da53 82 rgbOrder(order);
mutech 0:dff187a80020 83 _dummyPixel = 0;
mutech 27:bc79f444883b 84 setPixelBuffer(buffer, maxPixels);
mutech 0:dff187a80020 85 }
mutech 0:dff187a80020 86
mutech 0:dff187a80020 87 WS281X::~WS281X()
mutech 0:dff187a80020 88 {
mutech 9:087006b19049 89 if (_buf_owner && _pixels)
mutech 9:087006b19049 90 delete[] _pixels;
mutech 9:087006b19049 91 }
mutech 9:087006b19049 92
mutech 27:bc79f444883b 93 void WS281X::setPixelBuffer(RGBColor *buffer, int maxPixels)
mutech 9:087006b19049 94 {
mutech 9:087006b19049 95 if (_buf_owner && _pixels)
mutech 0:dff187a80020 96 delete[] _pixels;
mutech 9:087006b19049 97
mutech 9:087006b19049 98 _buf_owner = false;
mutech 27:bc79f444883b 99 _pixels = buffer;
mutech 9:087006b19049 100
mutech 20:28fe0d0d081b 101 _maxPixels = (maxPixels < 0) ? 0 : (maxPixels > MAX_PIXELS) ? MAX_PIXELS : maxPixels;
mutech 20:28fe0d0d081b 102 if (!_pixels && _maxPixels > 0)
mutech 9:087006b19049 103 {
mutech 20:28fe0d0d081b 104 _pixels = new RGBColor[_maxPixels];
mutech 9:087006b19049 105 _buf_owner = true;
mutech 9:087006b19049 106 }
mutech 20:28fe0d0d081b 107 _numPixels = _maxPixels;
mutech 20:28fe0d0d081b 108 clear();
mutech 20:28fe0d0d081b 109 }
mutech 9:087006b19049 110
mutech 27:bc79f444883b 111 int WS281X::numPixels(int value)
mutech 20:28fe0d0d081b 112 {
mutech 27:bc79f444883b 113 if (value >= 0)
mutech 27:bc79f444883b 114 _numPixels = (value > _maxPixels) ? _maxPixels : value;
mutech 27:bc79f444883b 115 return _numPixels;
mutech 0:dff187a80020 116 }
mutech 0:dff187a80020 117
mutech 0:dff187a80020 118 #if defined(TARGET_STM)
mutech 6:5aff0da4b663 119 /**
mutech 6:5aff0da4b663 120 * Configure pin pull-up/pull-down/OpenDrain
mutech 6:5aff0da4b663 121 * typedef enum {
mutech 6:5aff0da4b663 122 * PullNone = 0,
mutech 6:5aff0da4b663 123 * PullUp = 1,
mutech 6:5aff0da4b663 124 * PullDown = 2,
mutech 6:5aff0da4b663 125 * OpenDrain = 3,
mutech 6:5aff0da4b663 126 * PullDefault = PullNone
mutech 6:5aff0da4b663 127 * } PinMode;
mutech 6:5aff0da4b663 128 */
mutech 0:dff187a80020 129 void WS281X::pin_mode_ex(PinName pin, PinMode mode)
mutech 0:dff187a80020 130 {
mutech 6:5aff0da4b663 131 int port_index = STM_PORT(pin);
mutech 6:5aff0da4b663 132 int pin_index = STM_PIN(pin);
mutech 6:5aff0da4b663 133 int offset = pin_index << 1;
mutech 6:5aff0da4b663 134 GPIO_TypeDef * port_reg = ((GPIO_TypeDef *) (GPIOA_BASE + (port_index << 10)));
mutech 6:5aff0da4b663 135
mutech 6:5aff0da4b663 136 // Configure pull-up/pull-down resistors
mutech 6:5aff0da4b663 137 uint32_t pupd = (uint32_t)mode & 3;
mutech 6:5aff0da4b663 138 if (pupd > 2)
mutech 6:5aff0da4b663 139 pupd = 0; // Open-drain = No pull-up/No pull-down
mutech 6:5aff0da4b663 140
mutech 0:dff187a80020 141 if (mode == OpenDrain)
mutech 0:dff187a80020 142 {
mutech 6:5aff0da4b663 143 port_reg->PUPDR &= ~(0x3 << offset); // Open-drain = No pull-up/No pull-down
mutech 6:5aff0da4b663 144 port_reg->OTYPER |= 1 << pin_index;
mutech 0:dff187a80020 145 }
mutech 0:dff187a80020 146 else
mutech 6:5aff0da4b663 147 {
mutech 6:5aff0da4b663 148 port_reg->OTYPER &= ~(1 << pin_index);
mutech 6:5aff0da4b663 149 // pin_mode(pin, mode);
mutech 6:5aff0da4b663 150 port_reg->PUPDR &= ~(0x3 << offset);
mutech 6:5aff0da4b663 151 port_reg->PUPDR |= (mode & 0x03) << offset;
mutech 6:5aff0da4b663 152 }
mutech 0:dff187a80020 153 }
mutech 0:dff187a80020 154 #endif
mutech 0:dff187a80020 155
mutech 28:b452e097da53 156 WS281X::RGBOrder WS281X::rgbOrder(WS281X::RGBOrder order)
mutech 0:dff187a80020 157 {
mutech 29:a362df191524 158 if (order != READ_ORDER)
mutech 0:dff187a80020 159 {
mutech 29:a362df191524 160 _rgbOrder = order;
mutech 29:a362df191524 161 switch(order)
mutech 29:a362df191524 162 {
mutech 29:a362df191524 163 case RGB: _1st = 0; _2nd = 1; _3rd = 2; break; // WS2811
mutech 29:a362df191524 164 case RBG: _1st = 0; _2nd = 2; _3rd = 1; break;
mutech 29:a362df191524 165 case GRB: _1st = 1; _2nd = 0; _3rd = 2; break; // WS2812
mutech 29:a362df191524 166 case GBR: _1st = 2; _2nd = 0; _3rd = 1; break;
mutech 29:a362df191524 167 case BRG: _1st = 1; _2nd = 2; _3rd = 0; break;
mutech 29:a362df191524 168 case BGR: _1st = 2; _2nd = 1; _3rd = 0; break;
mutech 29:a362df191524 169 default:
mutech 29:a362df191524 170 _1st = 0; _2nd = 1; _3rd = 2;
mutech 29:a362df191524 171 _rgbOrder = GRB; // WS2812
mutech 29:a362df191524 172 break;
mutech 29:a362df191524 173 }
mutech 0:dff187a80020 174 }
mutech 28:b452e097da53 175 return _rgbOrder;
mutech 0:dff187a80020 176 }
mutech 0:dff187a80020 177
mutech 17:55c563d45bfa 178 //#define _nop1() __nop()
mutech 19:48ac403f172f 179 #define _nop1() do {asm volatile ("nop"); } while(0)
mutech 17:55c563d45bfa 180 #define _nop2() _nop1(); _nop1()
mutech 0:dff187a80020 181 #define _nop3() _nop1(); _nop2()
mutech 0:dff187a80020 182 #define _nop4() _nop2(); _nop2()
mutech 0:dff187a80020 183 #define _nop5() _nop1(); _nop4()
mutech 0:dff187a80020 184 #define _nop6() _nop2(); _nop4()
mutech 0:dff187a80020 185 #define _nop7() _nop3(); _nop4()
mutech 0:dff187a80020 186 #define _nop8() _nop4(); _nop4()
mutech 0:dff187a80020 187 #define _nop9() _nop1(); _nop8()
mutech 0:dff187a80020 188 #define _nop10() _nop2(); _nop8()
mutech 0:dff187a80020 189 #define _nop11() _nop3(); _nop8()
mutech 0:dff187a80020 190 #define _nop12() _nop4(); _nop8()
mutech 0:dff187a80020 191 #define _nop13() _nop5(); _nop8()
mutech 0:dff187a80020 192 #define _nop14() _nop6(); _nop8()
mutech 0:dff187a80020 193 #define _nop15() _nop7(); _nop8()
mutech 0:dff187a80020 194 #define _nop16() _nop8(); _nop8()
mutech 0:dff187a80020 195
mutech 4:4af895bb2979 196 #if defined(TARGET_LPC82X)
mutech 5:8e6835a94e10 197 // LPCXpresso824-MAX (30MHz)
mutech 0:dff187a80020 198 #define DELAY_T0H() do{ _nop2(); }while(0)
mutech 0:dff187a80020 199 #define DELAY_T1H() do{ _nop6(); }while(0)
mutech 0:dff187a80020 200 #define DELAY_TLOW() do{ _nop6(); }while(0)
mutech 0:dff187a80020 201 #define DELAY_TLOW2() //do{ _nop2(); }while(0)
mutech 4:4af895bb2979 202 #define DELAY_SPACE() do{ _nop4(); }while(0)
mutech 4:4af895bb2979 203 #define DELAY_NEXT() //do{ _nop1(); }while(0)
mutech 0:dff187a80020 204 #endif
mutech 0:dff187a80020 205
mutech 0:dff187a80020 206 #if defined(TARGET_STM32F0)
mutech 5:8e6835a94e10 207 // NUCLEO-F030R8 (48MHz)
mutech 5:8e6835a94e10 208 // NUCLEO-F070RB (48MHz)
mutech 23:d4061c4b6238 209 // NUCLEO-F072RB (48MHz)
mutech 0:dff187a80020 210 #define DELAY_T0H() do{ _nop8(); _nop4(); }while(0)
mutech 0:dff187a80020 211 #define DELAY_T1H() do{ _nop8(); _nop8(); }while(0)
mutech 0:dff187a80020 212 #define DELAY_TLOW() do{ _nop16(); }while(0)
mutech 0:dff187a80020 213 #define DELAY_TLOW2() //do{ _nop8(); _nop4(); }while(0)
mutech 4:4af895bb2979 214 #define DELAY_SPACE() do{ _nop8(); _nop6(); }while(0)
mutech 4:4af895bb2979 215 #define DELAY_NEXT() do{ _nop8(); }while(0)
mutech 0:dff187a80020 216 #endif
mutech 0:dff187a80020 217
mutech 6:5aff0da4b663 218 #if defined(TARGET_NUCLEO_F446RE)
mutech 6:5aff0da4b663 219 // NUCLEO-F446RE (180MHz)
mutech 6:5aff0da4b663 220 #define USE_DELAYFUNC 1
mutech 6:5aff0da4b663 221 #define T0H (18)
mutech 6:5aff0da4b663 222 #define T0L (58-T0H)
mutech 6:5aff0da4b663 223 #define T1H (40)
mutech 6:5aff0da4b663 224 #define T1L (58-T1H)
mutech 6:5aff0da4b663 225
mutech 6:5aff0da4b663 226 #define DELAY_T0H() _delay(T0H)
mutech 6:5aff0da4b663 227 #define DELAY_T1H() _delay(T1H-T0H)
mutech 6:5aff0da4b663 228 #define DELAY_TLOW() _delay(T1L)
mutech 6:5aff0da4b663 229 #define DELAY_TLOW2() //DELAY_TLOW()
mutech 6:5aff0da4b663 230 #define DELAY_SPACE() _delay(T1L-2)
mutech 6:5aff0da4b663 231 #define DELAY_NEXT() _delay(16)
mutech 6:5aff0da4b663 232 #endif
mutech 6:5aff0da4b663 233
mutech 4:4af895bb2979 234 #if defined(TARGET_NUCLEO_F746ZG)
mutech 4:4af895bb2979 235 // NUCLEO-F746ZG (216MHz)
mutech 6:5aff0da4b663 236 #define USE_DELAYFUNC 1
mutech 0:dff187a80020 237 #define T0H (35)
mutech 5:8e6835a94e10 238 #define T0L (130-T0H)
mutech 4:4af895bb2979 239 #define T1H (75)
mutech 5:8e6835a94e10 240 #define T1L (130-T1H)
mutech 0:dff187a80020 241
mutech 0:dff187a80020 242 #define DELAY_T0H() _delay(T0H)
mutech 0:dff187a80020 243 #define DELAY_T1H() _delay(T1H-T0H)
mutech 0:dff187a80020 244 #define DELAY_TLOW() _delay(T1L)
mutech 0:dff187a80020 245 #define DELAY_TLOW2() //DELAY_TLOW()
mutech 5:8e6835a94e10 246 #define DELAY_SPACE() _delay(T1L+20)
mutech 4:4af895bb2979 247 #define DELAY_NEXT() _delay(50)
mutech 4:4af895bb2979 248 #endif
mutech 0:dff187a80020 249
mutech 4:4af895bb2979 250 #if defined(TARGET_DISCO_F746NG)
mutech 4:4af895bb2979 251 // TARGET_DISCO_F746NG (216MHz)
mutech 6:5aff0da4b663 252 #define USE_DELAYFUNC 1
mutech 4:4af895bb2979 253 #define T0H (35)
mutech 6:5aff0da4b663 254 #define T0L (125-T0H)
mutech 6:5aff0da4b663 255 #define T1H (90)
mutech 6:5aff0da4b663 256 #define T1L (125-T1H)
mutech 4:4af895bb2979 257
mutech 4:4af895bb2979 258 #define DELAY_T0H() _delay(T0H)
mutech 4:4af895bb2979 259 #define DELAY_T1H() _delay(T1H-T0H)
mutech 4:4af895bb2979 260 #define DELAY_TLOW() _delay(T1L)
mutech 4:4af895bb2979 261 #define DELAY_TLOW2() //DELAY_TLOW()
mutech 6:5aff0da4b663 262 #define DELAY_SPACE() _delay(T1L-5)
mutech 6:5aff0da4b663 263 #define DELAY_NEXT() _delay(40)
mutech 4:4af895bb2979 264 #endif
mutech 4:4af895bb2979 265
mutech 6:5aff0da4b663 266 #if defined(USE_DELAYFUNC) && (USE_DELAYFUNC != 0)
mutech 6:5aff0da4b663 267 static inline __attribute__((always_inline))
mutech 6:5aff0da4b663 268 void _delay(int value)
mutech 0:dff187a80020 269 {
mutech 22:0846aefbeeae 270 do { _nop1(); } while (--value);
mutech 0:dff187a80020 271 }
mutech 0:dff187a80020 272 #endif
mutech 0:dff187a80020 273
mutech 0:dff187a80020 274 inline __attribute__((always_inline))
mutech 0:dff187a80020 275 void WS281X::writeByte(__IO regsize_t *reg_set, __IO regsize_t *reg_clr, regsize_t *mask, uint8_t value)
mutech 0:dff187a80020 276 {
mutech 0:dff187a80020 277 do
mutech 0:dff187a80020 278 {
mutech 6:5aff0da4b663 279 #if 1
mutech 0:dff187a80020 280 // bit7
mutech 0:dff187a80020 281 *reg_set = mask[0];
mutech 0:dff187a80020 282 DELAY_T0H();
mutech 0:dff187a80020 283 *reg_clr = mask[(value >> 7) & 1];
mutech 0:dff187a80020 284 DELAY_T1H();
mutech 0:dff187a80020 285 *reg_clr = mask[0];
mutech 0:dff187a80020 286 DELAY_TLOW();
mutech 0:dff187a80020 287
mutech 0:dff187a80020 288 // bit6
mutech 0:dff187a80020 289 *reg_set = mask[0];
mutech 0:dff187a80020 290 DELAY_T0H();
mutech 0:dff187a80020 291 *reg_clr = mask[(value >> 6) & 1];
mutech 0:dff187a80020 292 DELAY_T1H();
mutech 0:dff187a80020 293 *reg_clr = mask[0];
mutech 0:dff187a80020 294 DELAY_TLOW();
mutech 0:dff187a80020 295
mutech 0:dff187a80020 296 // bit5
mutech 0:dff187a80020 297 *reg_set = mask[0];
mutech 0:dff187a80020 298 DELAY_T0H();
mutech 0:dff187a80020 299 *reg_clr = mask[(value >> 5) & 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 // bit4
mutech 0:dff187a80020 305 *reg_set = mask[0];
mutech 0:dff187a80020 306 DELAY_T0H();
mutech 0:dff187a80020 307 *reg_clr = mask[(value >> 4) & 1];
mutech 0:dff187a80020 308 DELAY_T1H();
mutech 0:dff187a80020 309 *reg_clr = mask[0];
mutech 0:dff187a80020 310 DELAY_TLOW();
mutech 6:5aff0da4b663 311 #endif
mutech 0:dff187a80020 312
mutech 0:dff187a80020 313 // bit3
mutech 0:dff187a80020 314 *reg_set = mask[0];
mutech 0:dff187a80020 315 DELAY_T0H();
mutech 0:dff187a80020 316 *reg_clr = mask[(value >> 3) & 1];
mutech 0:dff187a80020 317 DELAY_T1H();
mutech 0:dff187a80020 318 *reg_clr = mask[0];
mutech 0:dff187a80020 319 DELAY_TLOW();
mutech 0:dff187a80020 320
mutech 0:dff187a80020 321 // bit2
mutech 0:dff187a80020 322 *reg_set = mask[0];
mutech 0:dff187a80020 323 DELAY_T0H();
mutech 0:dff187a80020 324 *reg_clr = mask[(value >> 2) & 1];
mutech 0:dff187a80020 325 DELAY_T1H();
mutech 0:dff187a80020 326 *reg_clr = mask[0];
mutech 0:dff187a80020 327 DELAY_TLOW();
mutech 0:dff187a80020 328
mutech 0:dff187a80020 329 // bit1
mutech 0:dff187a80020 330 *reg_set = mask[0];
mutech 0:dff187a80020 331 DELAY_T0H();
mutech 0:dff187a80020 332 *reg_clr = mask[(value >> 1) & 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 // bit0
mutech 0:dff187a80020 338 *reg_set = mask[0];
mutech 0:dff187a80020 339 DELAY_T0H();
mutech 0:dff187a80020 340 *reg_clr = mask[(value >> 0) & 1];
mutech 0:dff187a80020 341 DELAY_T1H();
mutech 0:dff187a80020 342 *reg_clr = mask[0];
mutech 0:dff187a80020 343 DELAY_TLOW2();
mutech 0:dff187a80020 344
mutech 0:dff187a80020 345 } while (0);
mutech 0:dff187a80020 346 }
mutech 0:dff187a80020 347
mutech 0:dff187a80020 348 void WS281X::show()
mutech 0:dff187a80020 349 {
mutech 0:dff187a80020 350 // CPU_FREQ = 30MHz -> 0.0333us/cycle
mutech 0:dff187a80020 351 // WS2811 0: 0.25us+1.0us, 1: 1.0us+0.25us
mutech 0:dff187a80020 352 // WS2812 0: 0.45us+0.8us, 1: 0.8us+0.45us
mutech 0:dff187a80020 353
mutech 9:087006b19049 354 if (!_pixels)
mutech 9:087006b19049 355 return;
mutech 9:087006b19049 356
mutech 0:dff187a80020 357 #if defined(TARGET_NXP)
mutech 0:dff187a80020 358 __IO uint32_t *reg_set = _gpio.reg_set;
mutech 0:dff187a80020 359 __IO uint32_t *reg_clr = _gpio.reg_clr;
mutech 0:dff187a80020 360 uint32_t mask[2] = { _gpio.mask, 0 };
mutech 0:dff187a80020 361 #elif defined(TARGET_STM32F0) || defined(TARGET_STM32F1)
mutech 0:dff187a80020 362 __IO uint32_t *reg_set = _gpio.reg_set;
mutech 0:dff187a80020 363 __IO uint32_t *reg_clr = _gpio.reg_clr;
mutech 0:dff187a80020 364 uint32_t mask[2] = { _gpio.mask, 0 };
mutech 0:dff187a80020 365 #elif defined(TARGET_STM)
mutech 0:dff187a80020 366 __IO uint16_t *reg_set = (__IO uint16_t *)_gpio.reg_set_clr;
mutech 0:dff187a80020 367 __IO uint16_t *reg_clr = reg_set + 1;
mutech 0:dff187a80020 368 uint16_t mask[2] = { _gpio.mask, 0 };
mutech 0:dff187a80020 369 #endif
mutech 0:dff187a80020 370
mutech 0:dff187a80020 371 uint8_t *pix = (uint8_t *)_pixels;
mutech 0:dff187a80020 372 uint8_t *end = pix + (_numPixels * sizeof(_pixels[0]));
mutech 0:dff187a80020 373
mutech 0:dff187a80020 374 __disable_irq(); // Disable interrupts temporarily because we don't want our pulse timing to be messed up.
mutech 0:dff187a80020 375
mutech 0:dff187a80020 376 uint8_t value;
mutech 0:dff187a80020 377 do
mutech 0:dff187a80020 378 {
mutech 0:dff187a80020 379 value = pix[_1st];
mutech 0:dff187a80020 380 writeByte(reg_set, reg_clr, mask, value);
mutech 0:dff187a80020 381 DELAY_SPACE();
mutech 0:dff187a80020 382
mutech 0:dff187a80020 383 value = pix[_2nd];
mutech 0:dff187a80020 384 writeByte(reg_set, reg_clr, mask, value);
mutech 0:dff187a80020 385 DELAY_SPACE();
mutech 0:dff187a80020 386
mutech 0:dff187a80020 387 value = pix[_3rd];
mutech 0:dff187a80020 388 writeByte(reg_set, reg_clr, mask, value);
mutech 0:dff187a80020 389 pix += sizeof(_pixels[0]);
mutech 0:dff187a80020 390 DELAY_NEXT();
mutech 0:dff187a80020 391 } while (pix < end);
mutech 0:dff187a80020 392
mutech 0:dff187a80020 393 __enable_irq(); // Re-enable interrupts now that we are done.
mutech 0:dff187a80020 394
mutech 0:dff187a80020 395 wait_us(50);
mutech 0:dff187a80020 396 }
mutech 0:dff187a80020 397
mutech 8:0617f524d67d 398 // 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 399 void WS281X::setPixels(int index, RGBColor *color, int len)
mutech 8:0617f524d67d 400 {
mutech 22:0846aefbeeae 401 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 22:0846aefbeeae 402 {
mutech 22:0846aefbeeae 403 if (index + len > _numPixels)
mutech 22:0846aefbeeae 404 len = _numPixels - index;
mutech 22:0846aefbeeae 405 memcpy(&_pixels[index], color, len * sizeof(_pixels[0]));
mutech 22:0846aefbeeae 406 }
mutech 21:77275089d837 407 }
mutech 21:77275089d837 408
mutech 27:bc79f444883b 409 void WS281X::setPixels(int index, HSVColor *color, int len)
mutech 21:77275089d837 410 {
mutech 22:0846aefbeeae 411 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 8:0617f524d67d 412 {
mutech 22:0846aefbeeae 413 if (index + len > _numPixels)
mutech 22:0846aefbeeae 414 len = _numPixels - index;
mutech 24:f93a61e727a3 415 RGBColor *dest = &_pixels[index];
mutech 22:0846aefbeeae 416 do
mutech 22:0846aefbeeae 417 {
mutech 24:f93a61e727a3 418 *dest++ = *color++;
mutech 22:0846aefbeeae 419 } while (--len);
mutech 22:0846aefbeeae 420 }
mutech 8:0617f524d67d 421 }
mutech 8:0617f524d67d 422
mutech 27:bc79f444883b 423 // 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 424 void WS281X::fillPixels(int index, const RGBColor color, int len)
mutech 8:0617f524d67d 425 {
mutech 24:f93a61e727a3 426 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 8:0617f524d67d 427 {
mutech 24:f93a61e727a3 428 if (index + len > _numPixels)
mutech 24:f93a61e727a3 429 len = _numPixels - index;
mutech 27:bc79f444883b 430 _pixels[index] = color;
mutech 27:bc79f444883b 431 repeat_buffer<RGBColor>(_pixels + index, len, 1);
mutech 24:f93a61e727a3 432 }
mutech 8:0617f524d67d 433 }
mutech 8:0617f524d67d 434
mutech 27:bc79f444883b 435 // 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 436 void WS281X::fillPixels(int index, const HSVColor color, int len)
mutech 27:bc79f444883b 437 {
mutech 28:b452e097da53 438 fillPixels(index, color, len);
mutech 27:bc79f444883b 439 }
mutech 27:bc79f444883b 440
mutech 0:dff187a80020 441 // 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 442 void WS281X::repeatPixels(int block_size)
mutech 0:dff187a80020 443 {
mutech 22:0846aefbeeae 444 if (_pixels && block_size > 0 && block_size < _numPixels)
mutech 0:dff187a80020 445 {
mutech 27:bc79f444883b 446 repeat_buffer<RGBColor>(_pixels, _numPixels, block_size);
mutech 0:dff187a80020 447 }
mutech 0:dff187a80020 448 }
mutech 0:dff187a80020 449
mutech 27:bc79f444883b 450 void WS281X::repeatPixels(RGBColor *source, int size)
mutech 24:f93a61e727a3 451 {
mutech 24:f93a61e727a3 452 if (_pixels && source && size > 0)
mutech 24:f93a61e727a3 453 {
mutech 24:f93a61e727a3 454 if (size > _numPixels)
mutech 24:f93a61e727a3 455 size = _numPixels;
mutech 24:f93a61e727a3 456 memcpy(_pixels, source, size * sizeof(_pixels[0]));
mutech 27:bc79f444883b 457 repeat_buffer<RGBColor>(_pixels, _numPixels, size);
mutech 24:f93a61e727a3 458 }
mutech 24:f93a61e727a3 459 }
mutech 24:f93a61e727a3 460
mutech 27:bc79f444883b 461 void WS281X::repeatPixels(HSVColor *source, int size)
mutech 24:f93a61e727a3 462 {
mutech 24:f93a61e727a3 463 if (_pixels && source && size > 0)
mutech 24:f93a61e727a3 464 {
mutech 24:f93a61e727a3 465 if (size > _numPixels)
mutech 24:f93a61e727a3 466 size = _numPixels;
mutech 24:f93a61e727a3 467 for (int i = 0; i < size; ++i)
mutech 24:f93a61e727a3 468 _pixels[i] = *source++;
mutech 27:bc79f444883b 469 repeat_buffer<RGBColor>(_pixels, _numPixels, size);
mutech 9:087006b19049 470 }
mutech 0:dff187a80020 471 }
mutech 0:dff187a80020 472
mutech 28:b452e097da53 473 void WS281X::makeGradation(int index, RGBColor from, RGBColor to, int len)
mutech 28:b452e097da53 474 {
mutech 28:b452e097da53 475 if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
mutech 28:b452e097da53 476 return;
mutech 28:b452e097da53 477
mutech 28:b452e097da53 478 int end = len;
mutech 28:b452e097da53 479 if (index + end > _numPixels)
mutech 28:b452e097da53 480 end = _numPixels - index;
mutech 28:b452e097da53 481
mutech 28:b452e097da53 482 RGBColor color;
mutech 28:b452e097da53 483 RGBColor *dest = _pixels;
mutech 28:b452e097da53 484 if (index > 0)
mutech 28:b452e097da53 485 dest += index;
mutech 28:b452e097da53 486 for (int i = (index < 0) ? -index : 0; i < end; ++i)
mutech 28:b452e097da53 487 {
mutech 28:b452e097da53 488 int j = len - i;
mutech 28:b452e097da53 489 color.red = ((from.red * j) + (to.red * i)) / len;
mutech 28:b452e097da53 490 color.green = ((from.green * j) + (to.green * i)) / len;
mutech 28:b452e097da53 491 color.blue = ((from.blue * j) + (to.blue * i)) / len;
mutech 28:b452e097da53 492 *dest++ = GammaColor(color);
mutech 28:b452e097da53 493 }
mutech 28:b452e097da53 494 }
mutech 28:b452e097da53 495
mutech 28:b452e097da53 496 void WS281X::makeRainbow(int index, HSVColor color, int len, int direction)
mutech 28:b452e097da53 497 {
mutech 28:b452e097da53 498 if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
mutech 28:b452e097da53 499 return;
mutech 28:b452e097da53 500
mutech 28:b452e097da53 501 int end = len;
mutech 28:b452e097da53 502 if (index + end > _numPixels)
mutech 28:b452e097da53 503 end = _numPixels - index;
mutech 28:b452e097da53 504
mutech 28:b452e097da53 505 HSVColor hsv(color);
mutech 28:b452e097da53 506 RGBColor *dest = _pixels;
mutech 28:b452e097da53 507 if (index > 0)
mutech 28:b452e097da53 508 dest += index;
mutech 28:b452e097da53 509 direction = (direction >= 0) ? -3600 : 3600;
mutech 28:b452e097da53 510 for (int i = (index < 0) ? -index : 0; i < end; ++i)
mutech 28:b452e097da53 511 {
mutech 28:b452e097da53 512 hsv.hue = color.hue + direction * i / len;
mutech 28:b452e097da53 513 *dest++ = GammaColor(hsv);
mutech 28:b452e097da53 514 }
mutech 28:b452e097da53 515 }
mutech 28:b452e097da53 516
mutech 0:dff187a80020 517 // 指定色でバッファを埋めた後表示
mutech 8:0617f524d67d 518 void WS281X::show(const RGBColor color)
mutech 0:dff187a80020 519 {
mutech 0:dff187a80020 520 clear(color);
mutech 0:dff187a80020 521 show();
mutech 0:dff187a80020 522 }
mutech 0:dff187a80020 523
mutech 0:dff187a80020 524 //----------------------------------------------------------------------------