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| 1 | uint8 staticBits ; // (LED_DR & (uint8)(~LED_MASK)); | |
| 2 | ||
| 3 | #define NB_LED 144 | |
| 4 | #define NB_LED_COMP 143 | |
| 5 | ||
| 6 | uint8 LED_ON_BITVALUE = ((uint8)(1 << LED_SHIFT) & LED_MASK); | |
| 7 | uint8 LED_OFF_BITVALUE = ((uint8)(0 << LED_SHIFT) & LED_MASK); | |
| 8 | uint8 staticBits ; // doit etre assigné dpeuis le main = (LED_DR & (uint8)(~LED_MASK)); | |
| 9 | #define LED_ON LED_DR = staticBits | LED_ON_BITVALUE; | |
| 10 | #define LED_OFF LED_DR = staticBits | LED_OFF_BITVALUE; | |
| 11 | #define QUICK_LED_BIT_1 {LED_ON __asm__( "nop\n nop\n nop\n nop\n nop\n nop\n"); LED_OFF }
| |
| 12 | #define QUICK_LED_BIT_0 {LED_ON LED_OFF __asm__( "nop\n"); }
| |
| 13 | ||
| 14 | - | // Test de 2 fonction pour allumer le ruban led WS2812 |
| 14 | + | // Test de 3 fonction pour allumer le ruban led WS2812 |
| 15 | - | // La fonction avec les if est plus rapide qu'avec la version switch |
| 15 | + | // La version ASM est plus rapique que la version avec les if qui est elle meme plus rapide que la version switch |
| 16 | ||
| 17 | // edit | |
| 18 | // - ledStripC est la version la plus rapide | |
| 19 | // - le while est plus rapide que le do_while | |
| 20 | // - le test != est plus rapide que < | |
| 21 | // - supprimer la bouclepar des goto est légèrement plus lent | |
| 22 | ||
| 23 | void writeLedStripC() | |
| 24 | {
| |
| 25 | uint_fast8_t i = 0; | |
| 26 | boardLed_Write(1); | |
| 27 | uint_fast8_t bitIndexL = 7; | |
| 28 | uint_fast8_t byteIndexL = 0; | |
| 29 | while(i != NB_LED_COMP) | |
| 30 | {
| |
| 31 | - | if (bitIndexL == 7) |
| 31 | + | continueLoop: |
| 32 | if (ledstrip[i].led.data[byteIndexL] & (1u << (bitIndexL))) | |
| 33 | QUICK_LED_BIT_1 | |
| 34 | else | |
| 35 | QUICK_LED_BIT_0 | |
| 36 | ||
| 37 | if (bitIndexL) | |
| 38 | {
| |
| 39 | bitIndexL--; | |
| 40 | goto continueLoop; | |
| 41 | } | |
| 42 | bitIndexL = 7; | |
| 43 | if (byteIndexL != 2) | |
| 44 | {
| |
| 45 | byteIndexL++; | |
| 46 | goto continueLoop; | |
| 47 | } | |
| 48 | bitIndexL = 7; | |
| 49 | byteIndexL = 0; | |
| 50 | i++; | |
| 51 | } | |
| 52 | boardLed_Write(0); | |
| 53 | } | |
| 54 | ||
| 55 | void writeLedStripASM() | |
| 56 | {
| |
| 57 | uint_fast8_t i = 0; | |
| 58 | boardLed_Write(1); | |
| 59 | uint8 bitIndexL = 7 ; | |
| 60 | uint_fast8_t byteIndexL = 0; | |
| 61 | - | switch (bitIndexL) |
| 61 | + | |
| 62 | {
| |
| 63 | while(byteIndexL < 3) | |
| 64 | {
| |
| 65 | __asm__ ("CONTINUELOOP:\n");
| |
| 66 | ||
| 67 | if (ledstrip[i].led.data[byteIndexL] & (1u << bitIndexL)) | |
| 68 | QUICK_LED_BIT_1 | |
| 69 | else | |
| 70 | QUICK_LED_BIT_0 | |
| 71 | ||
| 72 | __asm__ ( | |
| 73 | "\n" | |
| 74 | "CBZ %0, RESET\n" | |
| 75 | "\n" | |
| 76 | "SUB %0, %0, #1\n" | |
| 77 | "B CONTINUELOOP\n" | |
| 78 | "\n" | |
| 79 | "RESET:\n" | |
| 80 | "MOV %0, #7\n" | |
| 81 | "ADD %1, %1, #1\n" | |
| 82 | : "+r" (bitIndexL), "+r" (byteIndexL) | |
| 83 | : | |
| 84 | ); | |
| 85 | } | |
| 86 | bitIndexL = 7; | |
| 87 | byteIndexL = 0; | |
| 88 | i++; | |
| 89 | } | |
| 90 | boardLed_Write(0); | |
| 91 | } | |
| 92 | ||
| 93 | void writeLedStrip() | |
| 94 | {
| |
| 95 | uint_fast8_t i = 0; | |
| 96 | boardLed_Write(1); | |
| 97 | uint_fast8_t bitIndexL = 7; | |
| 98 | uint_fast8_t byteIndexL = 0; | |
| 99 | while(i < NB_LED) | |
| 100 | {
| |
| 101 | while (byteIndexL<3) | |
| 102 | {
| |
| 103 | if (ledstrip[i].led.data[byteIndexL] & (1u << (7- bitIndexL))) | |
| 104 | QUICK_LED_BIT_1 | |
| 105 | else | |
| 106 | QUICK_LED_BIT_0 | |
| 107 | ||
| 108 | if (bitIndexL) | |
| 109 | {
| |
| 110 | bitIndexL--; | |
| 111 | ||
| 112 | } | |
| 113 | else | |
| 114 | {
| |
| 115 | bitIndexL = 7; | |
| 116 | byteIndexL++; | |
| 117 | } | |
| 118 | } | |
| 119 | bitIndexL = 7; | |
| 120 | byteIndexL = 0; | |
| 121 | i++; | |
| 122 | } | |
| 123 | boardLed_Write(0); | |
| 124 | } | |
| 125 | ||
| 126 | ||
| 127 | version switch: | |
| 128 | void writeLedStrip() | |
| 129 | {
| |
| 130 | uint_fast8_t i = 0; | |
| 131 | boardLed_Write(1); | |
| 132 | uint_fast8_t bitIndexL = 0; | |
| 133 | uint_fast8_t byteIndexL = 0; | |
| 134 | while(i < NB_LED) | |
| 135 | {
| |
| 136 | while (byteIndexL<3) | |
| 137 | {
| |
| 138 | switch (bitIndexL) | |
| 139 | {
| |
| 140 | case 0: | |
| 141 | if (ledstrip[i].led.data[byteIndexL] & 128u) | |
| 142 | QUICK_LED_BIT_1 | |
| 143 | else | |
| 144 | QUICK_LED_BIT_0 | |
| 145 | bitIndexL++; | |
| 146 | break; | |
| 147 | case 1: | |
| 148 | if (ledstrip[i].led.data[byteIndexL] & 64u) | |
| 149 | QUICK_LED_BIT_1 | |
| 150 | else | |
| 151 | QUICK_LED_BIT_0 | |
| 152 | bitIndexL++; | |
| 153 | break; | |
| 154 | case 2: | |
| 155 | if (ledstrip[i].led.data[byteIndexL] & 32u) | |
| 156 | QUICK_LED_BIT_1 | |
| 157 | else | |
| 158 | QUICK_LED_BIT_0 | |
| 159 | bitIndexL++; | |
| 160 | break; | |
| 161 | case 3: | |
| 162 | if (ledstrip[i].led.data[byteIndexL] & 16u) | |
| 163 | QUICK_LED_BIT_1 | |
| 164 | else | |
| 165 | QUICK_LED_BIT_0 | |
| 166 | bitIndexL++; | |
| 167 | break; | |
| 168 | case 4: | |
| 169 | if (ledstrip[i].led.data[byteIndexL] & 8u) | |
| 170 | QUICK_LED_BIT_1 | |
| 171 | else | |
| 172 | QUICK_LED_BIT_0 | |
| 173 | bitIndexL++; | |
| 174 | break; | |
| 175 | case 5: | |
| 176 | if (ledstrip[i].led.data[byteIndexL] & 4u) | |
| 177 | QUICK_LED_BIT_1 | |
| 178 | else | |
| 179 | QUICK_LED_BIT_0 | |
| 180 | bitIndexL++; | |
| 181 | break; | |
| 182 | case 6: | |
| 183 | if (ledstrip[i].led.data[byteIndexL] & 2u) | |
| 184 | QUICK_LED_BIT_1 | |
| 185 | else | |
| 186 | QUICK_LED_BIT_0 | |
| 187 | bitIndexL++; | |
| 188 | break; | |
| 189 | case 7: | |
| 190 | if (ledstrip[i].led.data[byteIndexL] & 1u) | |
| 191 | QUICK_LED_BIT_1 | |
| 192 | else | |
| 193 | QUICK_LED_BIT_0 | |
| 194 | bitIndexL = 0; | |
| 195 | byteIndexL++; | |
| 196 | break; | |
| 197 | } | |
| 198 | ||
| 199 | } | |
| 200 | bitIndexL = 0; | |
| 201 | byteIndexL = 0; | |
| 202 | i++; | |
| 203 | } | |
| 204 | boardLed_Write(0); | |
| 205 | } | |
| 206 | ||
| 207 |
