TLIGHT_PRODUCTS / WS281X

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WS281X.cpp@34:5a141ed5d52a, 2016-11-04 (annotated)

Committer:
mutech
Date:
Fri Nov 04 13:19:38 2016 +0000
Revision:
34:5a141ed5d52a
Parent:
32:64c391617f6c
Child:
35:dffa06d09fdc
WS28111/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 4:4af895bb2979 34 // TARGET_STM32F0
mutech 0:dff187a80020 35 // TARGET_NUCLEO_F030R8
mutech 0:dff187a80020 36 // TARGET_NUCLEO_F070RB
mutech 17:55c563d45bfa 37 // TARGET_NUCLEO_F072RB
mutech 4:4af895bb2979 38 // TARGET_LPC82X
mutech 0:dff187a80020 39 // TARGET_LPC824
mutech 0:dff187a80020 40
mutech 0:dff187a80020 41 //----------------------------------------------------------------------------
mutech 27:bc79f444883b 42 // 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 43 template <class T>
mutech 27:bc79f444883b 44 static void repeat_buffer(T *buffer, int buf_size, int block_size = 1)
mutech 27:bc79f444883b 45 {
mutech 27:bc79f444883b 46 if (buffer && block_size > 0 && (uint16_t)block_size < buf_size)
mutech 27:bc79f444883b 47 {
mutech 27:bc79f444883b 48 T *dest = buffer + block_size;
mutech 27:bc79f444883b 49 int left = buf_size - block_size;
mutech 27:bc79f444883b 50 while (left > block_size)
mutech 27:bc79f444883b 51 {
mutech 27:bc79f444883b 52 memcpy(dest, buffer, block_size * sizeof(T));
mutech 27:bc79f444883b 53 dest += block_size;
mutech 27:bc79f444883b 54 left -= block_size;
mutech 27:bc79f444883b 55 block_size <<= 1; // 次回は２倍のサイズの転送
mutech 27:bc79f444883b 56 }
mutech 27:bc79f444883b 57 memcpy(dest, buffer, left * sizeof(T));
mutech 27:bc79f444883b 58 }
mutech 27:bc79f444883b 59 }
mutech 27:bc79f444883b 60
mutech 27:bc79f444883b 61 //----------------------------------------------------------------------------
mutech 28:b452e097da53 62 WS281X::WS281X(PinName wirePin, PinMode pinMode, int maxPixels, RGBOrder order)
mutech 32:64c391617f6c 63 : _wirePin(wirePin), _gpio(), _owned_buffer(false)
mutech 9:087006b19049 64 {
mutech 9:087006b19049 65 gpio_init_inout(&_gpio, wirePin, PIN_OUTPUT, pinMode, 0);
mutech 9:087006b19049 66 #if defined(TARGET_STM)
mutech 9:087006b19049 67 pin_mode_ex(wirePin, pinMode);
mutech 9:087006b19049 68 #endif
mutech 9:087006b19049 69
mutech 28:b452e097da53 70 rgbOrder(order);
mutech 9:087006b19049 71 _dummyPixel = 0;
mutech 20:28fe0d0d081b 72 setPixelBuffer(0, maxPixels);
mutech 9:087006b19049 73 }
mutech 9:087006b19049 74
mutech 9:087006b19049 75 WS281X::WS281X(PinName wirePin, PinMode pinMode,
mutech 28:b452e097da53 76 RGBColor *buffer, int maxPixels, RGBOrder order)
mutech 32:64c391617f6c 77 : _wirePin(wirePin), _gpio(), _owned_buffer(false)
mutech 0:dff187a80020 78 {
mutech 0:dff187a80020 79 gpio_init_inout(&_gpio, wirePin, PIN_OUTPUT, pinMode, 0);
mutech 0:dff187a80020 80 #if defined(TARGET_STM)
mutech 0:dff187a80020 81 pin_mode_ex(wirePin, pinMode);
mutech 0:dff187a80020 82 #endif
mutech 0:dff187a80020 83
mutech 28:b452e097da53 84 rgbOrder(order);
mutech 0:dff187a80020 85 _dummyPixel = 0;
mutech 27:bc79f444883b 86 setPixelBuffer(buffer, maxPixels);
mutech 0:dff187a80020 87 }
mutech 0:dff187a80020 88
mutech 0:dff187a80020 89 WS281X::~WS281X()
mutech 0:dff187a80020 90 {
mutech 32:64c391617f6c 91 setPixelBuffer(0, 0);
mutech 9:087006b19049 92 }
mutech 9:087006b19049 93
mutech 27:bc79f444883b 94 void WS281X::setPixelBuffer(RGBColor *buffer, int maxPixels)
mutech 9:087006b19049 95 {
mutech 32:64c391617f6c 96 if (_owned_buffer && _pixels)
mutech 32:64c391617f6c 97 {
mutech 32:64c391617f6c 98 #if USE_MALLOC
mutech 32:64c391617f6c 99 free(_pixels);
mutech 32:64c391617f6c 100 #else
mutech 0:dff187a80020 101 delete[] _pixels;
mutech 32:64c391617f6c 102 #endif
mutech 32:64c391617f6c 103 }
mutech 32:64c391617f6c 104 _owned_buffer = false;
mutech 32:64c391617f6c 105 _maxPixels = (maxPixels < 0) ? 0 : (maxPixels > MAX_PIXELS) ? MAX_PIXELS : maxPixels;
mutech 32:64c391617f6c 106 _pixels = (!_maxPixels) ? NULL : buffer;
mutech 9:087006b19049 107
mutech 20:28fe0d0d081b 108 if (!_pixels && _maxPixels > 0)
mutech 9:087006b19049 109 {
mutech 32:64c391617f6c 110 #if USE_MALLOC
mutech 32:64c391617f6c 111 _pixels = static_cast<RGBColor*>(malloc(sizeof(RGBColor)*_maxPixels));
mutech 32:64c391617f6c 112 if (_pixels)
mutech 32:64c391617f6c 113 _owned_buffer = true;
mutech 32:64c391617f6c 114 else
mutech 32:64c391617f6c 115 _maxPixels = 0;
mutech 32:64c391617f6c 116 #else
mutech 20:28fe0d0d081b 117 _pixels = new RGBColor[_maxPixels];
mutech 32:64c391617f6c 118 _owned_buffer = true;
mutech 32:64c391617f6c 119 #endif
mutech 9:087006b19049 120 }
mutech 20:28fe0d0d081b 121 _numPixels = _maxPixels;
mutech 20:28fe0d0d081b 122 clear();
mutech 20:28fe0d0d081b 123 }
mutech 9:087006b19049 124
mutech 27:bc79f444883b 125 int WS281X::numPixels(int value)
mutech 20:28fe0d0d081b 126 {
mutech 27:bc79f444883b 127 if (value >= 0)
mutech 27:bc79f444883b 128 _numPixels = (value > _maxPixels) ? _maxPixels : value;
mutech 27:bc79f444883b 129 return _numPixels;
mutech 0:dff187a80020 130 }
mutech 0:dff187a80020 131
mutech 0:dff187a80020 132 #if defined(TARGET_STM)
mutech 6:5aff0da4b663 133 /**
mutech 6:5aff0da4b663 134 * Configure pin pull-up/pull-down/OpenDrain
mutech 6:5aff0da4b663 135 * typedef enum {
mutech 6:5aff0da4b663 136 * PullNone = 0,
mutech 6:5aff0da4b663 137 * PullUp = 1,
mutech 6:5aff0da4b663 138 * PullDown = 2,
mutech 6:5aff0da4b663 139 * OpenDrain = 3,
mutech 6:5aff0da4b663 140 * PullDefault = PullNone
mutech 6:5aff0da4b663 141 * } PinMode;
mutech 6:5aff0da4b663 142 */
mutech 0:dff187a80020 143 void WS281X::pin_mode_ex(PinName pin, PinMode mode)
mutech 0:dff187a80020 144 {
mutech 6:5aff0da4b663 145 int port_index = STM_PORT(pin);
mutech 6:5aff0da4b663 146 int pin_index = STM_PIN(pin);
mutech 6:5aff0da4b663 147 int offset = pin_index << 1;
mutech 6:5aff0da4b663 148 GPIO_TypeDef * port_reg = ((GPIO_TypeDef *) (GPIOA_BASE + (port_index << 10)));
mutech 6:5aff0da4b663 149
mutech 6:5aff0da4b663 150 // Configure pull-up/pull-down resistors
mutech 6:5aff0da4b663 151 uint32_t pupd = (uint32_t)mode & 3;
mutech 6:5aff0da4b663 152 if (pupd > 2)
mutech 6:5aff0da4b663 153 pupd = 0; // Open-drain = No pull-up/No pull-down
mutech 6:5aff0da4b663 154
mutech 0:dff187a80020 155 if (mode == OpenDrain)
mutech 0:dff187a80020 156 {
mutech 6:5aff0da4b663 157 port_reg->PUPDR &= ~(0x3 << offset); // Open-drain = No pull-up/No pull-down
mutech 6:5aff0da4b663 158 port_reg->OTYPER |= 1 << pin_index;
mutech 0:dff187a80020 159 }
mutech 0:dff187a80020 160 else
mutech 6:5aff0da4b663 161 {
mutech 6:5aff0da4b663 162 port_reg->OTYPER &= ~(1 << pin_index);
mutech 6:5aff0da4b663 163 // pin_mode(pin, mode);
mutech 6:5aff0da4b663 164 port_reg->PUPDR &= ~(0x3 << offset);
mutech 6:5aff0da4b663 165 port_reg->PUPDR |= (mode & 0x03) << offset;
mutech 6:5aff0da4b663 166 }
mutech 0:dff187a80020 167 }
mutech 0:dff187a80020 168 #endif
mutech 0:dff187a80020 169
mutech 28:b452e097da53 170 WS281X::RGBOrder WS281X::rgbOrder(WS281X::RGBOrder order)
mutech 0:dff187a80020 171 {
mutech 29:a362df191524 172 if (order != READ_ORDER)
mutech 0:dff187a80020 173 {
mutech 29:a362df191524 174 _rgbOrder = order;
mutech 29:a362df191524 175 switch(order)
mutech 29:a362df191524 176 {
mutech 29:a362df191524 177 case RGB: _1st = 0; _2nd = 1; _3rd = 2; break; // WS2811
mutech 29:a362df191524 178 case RBG: _1st = 0; _2nd = 2; _3rd = 1; break;
mutech 29:a362df191524 179 case GRB: _1st = 1; _2nd = 0; _3rd = 2; break; // WS2812
mutech 29:a362df191524 180 case GBR: _1st = 2; _2nd = 0; _3rd = 1; break;
mutech 29:a362df191524 181 case BRG: _1st = 1; _2nd = 2; _3rd = 0; break;
mutech 29:a362df191524 182 case BGR: _1st = 2; _2nd = 1; _3rd = 0; break;
mutech 29:a362df191524 183 default:
mutech 29:a362df191524 184 _1st = 0; _2nd = 1; _3rd = 2;
mutech 29:a362df191524 185 _rgbOrder = GRB; // WS2812
mutech 29:a362df191524 186 break;
mutech 29:a362df191524 187 }
mutech 0:dff187a80020 188 }
mutech 28:b452e097da53 189 return _rgbOrder;
mutech 0:dff187a80020 190 }
mutech 0:dff187a80020 191
mutech 17:55c563d45bfa 192 //#define _nop1() __nop()
mutech 19:48ac403f172f 193 #define _nop1() do {asm volatile ("nop"); } while(0)
mutech 17:55c563d45bfa 194 #define _nop2() _nop1(); _nop1()
mutech 0:dff187a80020 195 #define _nop3() _nop1(); _nop2()
mutech 0:dff187a80020 196 #define _nop4() _nop2(); _nop2()
mutech 0:dff187a80020 197 #define _nop5() _nop1(); _nop4()
mutech 0:dff187a80020 198 #define _nop6() _nop2(); _nop4()
mutech 0:dff187a80020 199 #define _nop7() _nop3(); _nop4()
mutech 0:dff187a80020 200 #define _nop8() _nop4(); _nop4()
mutech 0:dff187a80020 201 #define _nop9() _nop1(); _nop8()
mutech 0:dff187a80020 202 #define _nop10() _nop2(); _nop8()
mutech 0:dff187a80020 203 #define _nop11() _nop3(); _nop8()
mutech 0:dff187a80020 204 #define _nop12() _nop4(); _nop8()
mutech 0:dff187a80020 205 #define _nop13() _nop5(); _nop8()
mutech 0:dff187a80020 206 #define _nop14() _nop6(); _nop8()
mutech 0:dff187a80020 207 #define _nop15() _nop7(); _nop8()
mutech 0:dff187a80020 208 #define _nop16() _nop8(); _nop8()
mutech 0:dff187a80020 209
mutech 4:4af895bb2979 210 #if defined(TARGET_LPC82X)
mutech 5:8e6835a94e10 211 // LPCXpresso824-MAX (30MHz)
mutech 0:dff187a80020 212 #define DELAY_T0H() do{ _nop2(); }while(0)
mutech 0:dff187a80020 213 #define DELAY_T1H() do{ _nop6(); }while(0)
mutech 0:dff187a80020 214 #define DELAY_TLOW() do{ _nop6(); }while(0)
mutech 0:dff187a80020 215 #define DELAY_TLOW2() //do{ _nop2(); }while(0)
mutech 4:4af895bb2979 216 #define DELAY_SPACE() do{ _nop4(); }while(0)
mutech 4:4af895bb2979 217 #define DELAY_NEXT() //do{ _nop1(); }while(0)
mutech 0:dff187a80020 218 #endif
mutech 0:dff187a80020 219
mutech 0:dff187a80020 220 #if defined(TARGET_STM32F0)
mutech 5:8e6835a94e10 221 // NUCLEO-F030R8 (48MHz)
mutech 5:8e6835a94e10 222 // NUCLEO-F070RB (48MHz)
mutech 23:d4061c4b6238 223 // NUCLEO-F072RB (48MHz)
mutech 0:dff187a80020 224 #define DELAY_T0H() do{ _nop8(); _nop4(); }while(0)
mutech 0:dff187a80020 225 #define DELAY_T1H() do{ _nop8(); _nop8(); }while(0)
mutech 0:dff187a80020 226 #define DELAY_TLOW() do{ _nop16(); }while(0)
mutech 0:dff187a80020 227 #define DELAY_TLOW2() //do{ _nop8(); _nop4(); }while(0)
mutech 4:4af895bb2979 228 #define DELAY_SPACE() do{ _nop8(); _nop6(); }while(0)
mutech 4:4af895bb2979 229 #define DELAY_NEXT() do{ _nop8(); }while(0)
mutech 0:dff187a80020 230 #endif
mutech 0:dff187a80020 231
mutech 6:5aff0da4b663 232 #if defined(TARGET_NUCLEO_F446RE)
mutech 6:5aff0da4b663 233 // NUCLEO-F446RE (180MHz)
mutech 6:5aff0da4b663 234 #define USE_DELAYFUNC 1
mutech 6:5aff0da4b663 235 #define T0H (18)
mutech 6:5aff0da4b663 236 #define T0L (58-T0H)
mutech 6:5aff0da4b663 237 #define T1H (40)
mutech 6:5aff0da4b663 238 #define T1L (58-T1H)
mutech 6:5aff0da4b663 239
mutech 6:5aff0da4b663 240 #define DELAY_T0H() _delay(T0H)
mutech 6:5aff0da4b663 241 #define DELAY_T1H() _delay(T1H-T0H)
mutech 6:5aff0da4b663 242 #define DELAY_TLOW() _delay(T1L)
mutech 6:5aff0da4b663 243 #define DELAY_TLOW2() //DELAY_TLOW()
mutech 6:5aff0da4b663 244 #define DELAY_SPACE() _delay(T1L-2)
mutech 6:5aff0da4b663 245 #define DELAY_NEXT() _delay(16)
mutech 6:5aff0da4b663 246 #endif
mutech 6:5aff0da4b663 247
mutech 4:4af895bb2979 248 #if defined(TARGET_NUCLEO_F746ZG)
mutech 4:4af895bb2979 249 // NUCLEO-F746ZG (216MHz)
mutech 6:5aff0da4b663 250 #define USE_DELAYFUNC 1
mutech 0:dff187a80020 251 #define T0H (35)
mutech 5:8e6835a94e10 252 #define T0L (130-T0H)
mutech 4:4af895bb2979 253 #define T1H (75)
mutech 5:8e6835a94e10 254 #define T1L (130-T1H)
mutech 0:dff187a80020 255
mutech 0:dff187a80020 256 #define DELAY_T0H() _delay(T0H)
mutech 0:dff187a80020 257 #define DELAY_T1H() _delay(T1H-T0H)
mutech 0:dff187a80020 258 #define DELAY_TLOW() _delay(T1L)
mutech 0:dff187a80020 259 #define DELAY_TLOW2() //DELAY_TLOW()
mutech 5:8e6835a94e10 260 #define DELAY_SPACE() _delay(T1L+20)
mutech 4:4af895bb2979 261 #define DELAY_NEXT() _delay(50)
mutech 4:4af895bb2979 262 #endif
mutech 0:dff187a80020 263
mutech 4:4af895bb2979 264 #if defined(TARGET_DISCO_F746NG)
mutech 4:4af895bb2979 265 // TARGET_DISCO_F746NG (216MHz)
mutech 6:5aff0da4b663 266 #define USE_DELAYFUNC 1
mutech 4:4af895bb2979 267 #define T0H (35)
mutech 6:5aff0da4b663 268 #define T0L (125-T0H)
mutech 6:5aff0da4b663 269 #define T1H (90)
mutech 6:5aff0da4b663 270 #define T1L (125-T1H)
mutech 4:4af895bb2979 271
mutech 4:4af895bb2979 272 #define DELAY_T0H() _delay(T0H)
mutech 4:4af895bb2979 273 #define DELAY_T1H() _delay(T1H-T0H)
mutech 4:4af895bb2979 274 #define DELAY_TLOW() _delay(T1L)
mutech 4:4af895bb2979 275 #define DELAY_TLOW2() //DELAY_TLOW()
mutech 6:5aff0da4b663 276 #define DELAY_SPACE() _delay(T1L-5)
mutech 6:5aff0da4b663 277 #define DELAY_NEXT() _delay(40)
mutech 4:4af895bb2979 278 #endif
mutech 4:4af895bb2979 279
mutech 6:5aff0da4b663 280 #if defined(USE_DELAYFUNC) && (USE_DELAYFUNC != 0)
mutech 6:5aff0da4b663 281 static inline __attribute__((always_inline))
mutech 6:5aff0da4b663 282 void _delay(int value)
mutech 0:dff187a80020 283 {
mutech 22:0846aefbeeae 284 do { _nop1(); } while (--value);
mutech 0:dff187a80020 285 }
mutech 0:dff187a80020 286 #endif
mutech 0:dff187a80020 287
mutech 0:dff187a80020 288 inline __attribute__((always_inline))
mutech 0:dff187a80020 289 void WS281X::writeByte(__IO regsize_t *reg_set, __IO regsize_t *reg_clr, regsize_t *mask, uint8_t value)
mutech 0:dff187a80020 290 {
mutech 0:dff187a80020 291 do
mutech 0:dff187a80020 292 {
mutech 6:5aff0da4b663 293 #if 1
mutech 0:dff187a80020 294 // bit7
mutech 0:dff187a80020 295 *reg_set = mask[0];
mutech 0:dff187a80020 296 DELAY_T0H();
mutech 0:dff187a80020 297 *reg_clr = mask[(value >> 7) & 1];
mutech 0:dff187a80020 298 DELAY_T1H();
mutech 0:dff187a80020 299 *reg_clr = mask[0];
mutech 0:dff187a80020 300 DELAY_TLOW();
mutech 0:dff187a80020 301
mutech 0:dff187a80020 302 // bit6
mutech 0:dff187a80020 303 *reg_set = mask[0];
mutech 0:dff187a80020 304 DELAY_T0H();
mutech 0:dff187a80020 305 *reg_clr = mask[(value >> 6) & 1];
mutech 0:dff187a80020 306 DELAY_T1H();
mutech 0:dff187a80020 307 *reg_clr = mask[0];
mutech 0:dff187a80020 308 DELAY_TLOW();
mutech 0:dff187a80020 309
mutech 0:dff187a80020 310 // bit5
mutech 0:dff187a80020 311 *reg_set = mask[0];
mutech 0:dff187a80020 312 DELAY_T0H();
mutech 0:dff187a80020 313 *reg_clr = mask[(value >> 5) & 1];
mutech 0:dff187a80020 314 DELAY_T1H();
mutech 0:dff187a80020 315 *reg_clr = mask[0];
mutech 0:dff187a80020 316 DELAY_TLOW();
mutech 0:dff187a80020 317
mutech 0:dff187a80020 318 // bit4
mutech 0:dff187a80020 319 *reg_set = mask[0];
mutech 0:dff187a80020 320 DELAY_T0H();
mutech 0:dff187a80020 321 *reg_clr = mask[(value >> 4) & 1];
mutech 0:dff187a80020 322 DELAY_T1H();
mutech 0:dff187a80020 323 *reg_clr = mask[0];
mutech 0:dff187a80020 324 DELAY_TLOW();
mutech 6:5aff0da4b663 325 #endif
mutech 0:dff187a80020 326
mutech 0:dff187a80020 327 // bit3
mutech 0:dff187a80020 328 *reg_set = mask[0];
mutech 0:dff187a80020 329 DELAY_T0H();
mutech 0:dff187a80020 330 *reg_clr = mask[(value >> 3) & 1];
mutech 0:dff187a80020 331 DELAY_T1H();
mutech 0:dff187a80020 332 *reg_clr = mask[0];
mutech 0:dff187a80020 333 DELAY_TLOW();
mutech 0:dff187a80020 334
mutech 0:dff187a80020 335 // bit2
mutech 0:dff187a80020 336 *reg_set = mask[0];
mutech 0:dff187a80020 337 DELAY_T0H();
mutech 0:dff187a80020 338 *reg_clr = mask[(value >> 2) & 1];
mutech 0:dff187a80020 339 DELAY_T1H();
mutech 0:dff187a80020 340 *reg_clr = mask[0];
mutech 0:dff187a80020 341 DELAY_TLOW();
mutech 0:dff187a80020 342
mutech 0:dff187a80020 343 // bit1
mutech 0:dff187a80020 344 *reg_set = mask[0];
mutech 0:dff187a80020 345 DELAY_T0H();
mutech 0:dff187a80020 346 *reg_clr = mask[(value >> 1) & 1];
mutech 0:dff187a80020 347 DELAY_T1H();
mutech 0:dff187a80020 348 *reg_clr = mask[0];
mutech 0:dff187a80020 349 DELAY_TLOW();
mutech 0:dff187a80020 350
mutech 0:dff187a80020 351 // bit0
mutech 0:dff187a80020 352 *reg_set = mask[0];
mutech 0:dff187a80020 353 DELAY_T0H();
mutech 0:dff187a80020 354 *reg_clr = mask[(value >> 0) & 1];
mutech 0:dff187a80020 355 DELAY_T1H();
mutech 0:dff187a80020 356 *reg_clr = mask[0];
mutech 0:dff187a80020 357 DELAY_TLOW2();
mutech 0:dff187a80020 358
mutech 0:dff187a80020 359 } while (0);
mutech 0:dff187a80020 360 }
mutech 0:dff187a80020 361
mutech 0:dff187a80020 362 void WS281X::show()
mutech 0:dff187a80020 363 {
mutech 0:dff187a80020 364 // CPU_FREQ = 30MHz -> 0.0333us/cycle
mutech 0:dff187a80020 365 // WS2811 0: 0.25us+1.0us, 1: 1.0us+0.25us
mutech 0:dff187a80020 366 // WS2812 0: 0.45us+0.8us, 1: 0.8us+0.45us
mutech 0:dff187a80020 367
mutech 9:087006b19049 368 if (!_pixels)
mutech 9:087006b19049 369 return;
mutech 9:087006b19049 370
mutech 0:dff187a80020 371 #if defined(TARGET_NXP)
mutech 0:dff187a80020 372 __IO uint32_t *reg_set = _gpio.reg_set;
mutech 0:dff187a80020 373 __IO uint32_t *reg_clr = _gpio.reg_clr;
mutech 0:dff187a80020 374 uint32_t mask[2] = { _gpio.mask, 0 };
mutech 0:dff187a80020 375 #elif defined(TARGET_STM32F0) || defined(TARGET_STM32F1)
mutech 0:dff187a80020 376 __IO uint32_t *reg_set = _gpio.reg_set;
mutech 0:dff187a80020 377 __IO uint32_t *reg_clr = _gpio.reg_clr;
mutech 0:dff187a80020 378 uint32_t mask[2] = { _gpio.mask, 0 };
mutech 0:dff187a80020 379 #elif defined(TARGET_STM)
mutech 0:dff187a80020 380 __IO uint16_t *reg_set = (__IO uint16_t *)_gpio.reg_set_clr;
mutech 0:dff187a80020 381 __IO uint16_t *reg_clr = reg_set + 1;
mutech 0:dff187a80020 382 uint16_t mask[2] = { _gpio.mask, 0 };
mutech 0:dff187a80020 383 #endif
mutech 0:dff187a80020 384
mutech 0:dff187a80020 385 uint8_t *pix = (uint8_t *)_pixels;
mutech 0:dff187a80020 386 uint8_t *end = pix + (_numPixels * sizeof(_pixels[0]));
mutech 0:dff187a80020 387
mutech 0:dff187a80020 388 __disable_irq(); // Disable interrupts temporarily because we don't want our pulse timing to be messed up.
mutech 0:dff187a80020 389
mutech 0:dff187a80020 390 uint8_t value;
mutech 0:dff187a80020 391 do
mutech 0:dff187a80020 392 {
mutech 0:dff187a80020 393 value = pix[_1st];
mutech 0:dff187a80020 394 writeByte(reg_set, reg_clr, mask, value);
mutech 0:dff187a80020 395 DELAY_SPACE();
mutech 0:dff187a80020 396
mutech 0:dff187a80020 397 value = pix[_2nd];
mutech 0:dff187a80020 398 writeByte(reg_set, reg_clr, mask, value);
mutech 0:dff187a80020 399 DELAY_SPACE();
mutech 0:dff187a80020 400
mutech 0:dff187a80020 401 value = pix[_3rd];
mutech 0:dff187a80020 402 writeByte(reg_set, reg_clr, mask, value);
mutech 0:dff187a80020 403 pix += sizeof(_pixels[0]);
mutech 0:dff187a80020 404 DELAY_NEXT();
mutech 0:dff187a80020 405 } while (pix < end);
mutech 0:dff187a80020 406
mutech 0:dff187a80020 407 __enable_irq(); // Re-enable interrupts now that we are done.
mutech 0:dff187a80020 408
mutech 0:dff187a80020 409 wait_us(50);
mutech 0:dff187a80020 410 }
mutech 0:dff187a80020 411
mutech 8:0617f524d67d 412 // 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 413 void WS281X::setPixels(int index, RGBColor *color, int len)
mutech 8:0617f524d67d 414 {
mutech 22:0846aefbeeae 415 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 22:0846aefbeeae 416 {
mutech 22:0846aefbeeae 417 if (index + len > _numPixels)
mutech 22:0846aefbeeae 418 len = _numPixels - index;
mutech 34:5a141ed5d52a 419
mutech 34:5a141ed5d52a 420 if (index < 0)
mutech 34:5a141ed5d52a 421 {
mutech 34:5a141ed5d52a 422 len = len - (-index);
mutech 34:5a141ed5d52a 423 color += (-index);
mutech 34:5a141ed5d52a 424 index = 0;
mutech 34:5a141ed5d52a 425 }
mutech 34:5a141ed5d52a 426
mutech 22:0846aefbeeae 427 memcpy(&_pixels[index], color, len * sizeof(_pixels[0]));
mutech 22:0846aefbeeae 428 }
mutech 21:77275089d837 429 }
mutech 21:77275089d837 430
mutech 27:bc79f444883b 431 void WS281X::setPixels(int index, HSVColor *color, int len)
mutech 21:77275089d837 432 {
mutech 22:0846aefbeeae 433 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 8:0617f524d67d 434 {
mutech 22:0846aefbeeae 435 if (index + len > _numPixels)
mutech 22:0846aefbeeae 436 len = _numPixels - index;
mutech 34:5a141ed5d52a 437
mutech 34:5a141ed5d52a 438 if (index < 0)
mutech 34:5a141ed5d52a 439 {
mutech 34:5a141ed5d52a 440 len = len - (-index);
mutech 34:5a141ed5d52a 441 color += (-index);
mutech 34:5a141ed5d52a 442 index = 0;
mutech 34:5a141ed5d52a 443 }
mutech 34:5a141ed5d52a 444
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 24:f93a61e727a3 456 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 8:0617f524d67d 457 {
mutech 24:f93a61e727a3 458 if (index + len > _numPixels)
mutech 24:f93a61e727a3 459 len = _numPixels - index;
mutech 27:bc79f444883b 460 _pixels[index] = color;
mutech 27:bc79f444883b 461 repeat_buffer<RGBColor>(_pixels + index, len, 1);
mutech 24:f93a61e727a3 462 }
mutech 8:0617f524d67d 463 }
mutech 8:0617f524d67d 464
mutech 27:bc79f444883b 465 // 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 466 void WS281X::fillPixels(int index, const HSVColor color, int len)
mutech 27:bc79f444883b 467 {
mutech 28:b452e097da53 468 fillPixels(index, color, len);
mutech 27:bc79f444883b 469 }
mutech 27:bc79f444883b 470
mutech 0:dff187a80020 471 // 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 472 void WS281X::repeatPixels(int block_size)
mutech 0:dff187a80020 473 {
mutech 22:0846aefbeeae 474 if (_pixels && block_size > 0 && block_size < _numPixels)
mutech 0:dff187a80020 475 {
mutech 27:bc79f444883b 476 repeat_buffer<RGBColor>(_pixels, _numPixels, block_size);
mutech 0:dff187a80020 477 }
mutech 0:dff187a80020 478 }
mutech 0:dff187a80020 479
mutech 27:bc79f444883b 480 void WS281X::repeatPixels(RGBColor *source, int size)
mutech 24:f93a61e727a3 481 {
mutech 24:f93a61e727a3 482 if (_pixels && source && size > 0)
mutech 24:f93a61e727a3 483 {
mutech 24:f93a61e727a3 484 if (size > _numPixels)
mutech 24:f93a61e727a3 485 size = _numPixels;
mutech 24:f93a61e727a3 486 memcpy(_pixels, source, size * sizeof(_pixels[0]));
mutech 27:bc79f444883b 487 repeat_buffer<RGBColor>(_pixels, _numPixels, size);
mutech 24:f93a61e727a3 488 }
mutech 24:f93a61e727a3 489 }
mutech 24:f93a61e727a3 490
mutech 27:bc79f444883b 491 void WS281X::repeatPixels(HSVColor *source, int size)
mutech 24:f93a61e727a3 492 {
mutech 24:f93a61e727a3 493 if (_pixels && source && size > 0)
mutech 24:f93a61e727a3 494 {
mutech 24:f93a61e727a3 495 if (size > _numPixels)
mutech 24:f93a61e727a3 496 size = _numPixels;
mutech 24:f93a61e727a3 497 for (int i = 0; i < size; ++i)
mutech 24:f93a61e727a3 498 _pixels[i] = *source++;
mutech 27:bc79f444883b 499 repeat_buffer<RGBColor>(_pixels, _numPixels, size);
mutech 9:087006b19049 500 }
mutech 0:dff187a80020 501 }
mutech 0:dff187a80020 502
mutech 28:b452e097da53 503 void WS281X::makeGradation(int index, RGBColor from, RGBColor to, int len)
mutech 28:b452e097da53 504 {
mutech 28:b452e097da53 505 if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
mutech 28:b452e097da53 506 return;
mutech 28:b452e097da53 507
mutech 28:b452e097da53 508 int end = len;
mutech 28:b452e097da53 509 if (index + end > _numPixels)
mutech 28:b452e097da53 510 end = _numPixels - index;
mutech 28:b452e097da53 511
mutech 28:b452e097da53 512 RGBColor color;
mutech 28:b452e097da53 513 RGBColor *dest = _pixels;
mutech 28:b452e097da53 514 if (index > 0)
mutech 28:b452e097da53 515 dest += index;
mutech 28:b452e097da53 516 for (int i = (index < 0) ? -index : 0; i < end; ++i)
mutech 28:b452e097da53 517 {
mutech 28:b452e097da53 518 int j = len - i;
mutech 28:b452e097da53 519 color.red = ((from.red * j) + (to.red * i)) / len;
mutech 28:b452e097da53 520 color.green = ((from.green * j) + (to.green * i)) / len;
mutech 28:b452e097da53 521 color.blue = ((from.blue * j) + (to.blue * i)) / len;
mutech 28:b452e097da53 522 *dest++ = GammaColor(color);
mutech 28:b452e097da53 523 }
mutech 28:b452e097da53 524 }
mutech 28:b452e097da53 525
mutech 28:b452e097da53 526 void WS281X::makeRainbow(int index, HSVColor color, int len, int direction)
mutech 28:b452e097da53 527 {
mutech 28:b452e097da53 528 if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
mutech 28:b452e097da53 529 return;
mutech 28:b452e097da53 530
mutech 28:b452e097da53 531 int end = len;
mutech 28:b452e097da53 532 if (index + end > _numPixels)
mutech 28:b452e097da53 533 end = _numPixels - index;
mutech 28:b452e097da53 534
mutech 28:b452e097da53 535 HSVColor hsv(color);
mutech 28:b452e097da53 536 RGBColor *dest = _pixels;
mutech 28:b452e097da53 537 if (index > 0)
mutech 28:b452e097da53 538 dest += index;
mutech 28:b452e097da53 539 direction = (direction >= 0) ? -3600 : 3600;
mutech 28:b452e097da53 540 for (int i = (index < 0) ? -index : 0; i < end; ++i)
mutech 28:b452e097da53 541 {
mutech 28:b452e097da53 542 hsv.hue = color.hue + direction * i / len;
mutech 28:b452e097da53 543 *dest++ = GammaColor(hsv);
mutech 28:b452e097da53 544 }
mutech 28:b452e097da53 545 }
mutech 28:b452e097da53 546
mutech 0:dff187a80020 547 // 指定色でバッファを埋めた後表示
mutech 8:0617f524d67d 548 void WS281X::show(const RGBColor color)
mutech 0:dff187a80020 549 {
mutech 0:dff187a80020 550 clear(color);
mutech 0:dff187a80020 551 show();
mutech 0:dff187a80020 552 }
mutech 0:dff187a80020 553
mutech 0:dff187a80020 554 //----------------------------------------------------------------------------