Rev 64 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 64 | walter | 1 | //############################################################################ |
| 2 | // - PWM CTRL |
||
| 3 | // - Main |
||
| 4 | // - ATMEGA8 mit 8MHz |
||
| 5 | // - Nur für den privaten Gebrauch |
||
| 6 | // - Keine Garantie auf Fehlerfreiheit |
||
| 7 | // - Kommerzielle Nutzung nur mit meiner Zustimmung |
||
| 8 | // - walter Meyer @ www.freakware.de |
||
| 9 | // - 11.12.2007 |
||
| 10 | // - Make sure Fuses are programmed for internal 8 MHz RC Oscilator |
||
| 11 | //############################################################################*/ |
||
| 12 | |||
| 13 | #include "main.h" |
||
| 14 | #include "uart.h" |
||
| 15 | #include "twislave.h" |
||
| 16 | |||
| 17 | volatile unsigned int PPM_SIGNAL = 1520; |
||
| 18 | volatile unsigned char PPM_NEW = 0; |
||
| 19 | volatile unsigned char TMR1OvF = 0; |
||
| 20 | volatile unsigned int TMR1MS; |
||
| 21 | volatile unsigned char CH0; |
||
| 22 | volatile unsigned char CH1; |
||
| 23 | volatile unsigned char CH2; |
||
| 24 | volatile unsigned char CH3; |
||
| 25 | volatile unsigned char CH4; |
||
| 26 | volatile unsigned char CH5; |
||
| 27 | |||
| 28 | uint16_t EEMEM EEPMIN=0x0000; |
||
| 29 | uint16_t EEMEM EEPMAX=0xffff; |
||
| 30 | uint16_t EEMEM EEPSIG=0xffff; |
||
| 31 | |||
| 32 | |||
| 33 | //led kennlinie, (noch nicht implementiert, nur vorbereitet) |
||
| 34 | unsigned char kl[256]={ |
||
| 35 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 36 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 37 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 38 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 39 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 40 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 41 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 42 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 43 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 44 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 45 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 46 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 47 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 48 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 49 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, |
||
| 50 | 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 |
||
| 51 | }; |
||
| 52 | |||
| 53 | |||
| 54 | |||
| 55 | /*##############################################################################*/ |
||
| 56 | SIGNAL(SIG_OVERFLOW1) |
||
| 57 | { |
||
| 58 | TMR1OvF++; |
||
| 59 | } |
||
| 60 | |||
| 61 | |||
| 62 | SIGNAL(SIG_INPUT_CAPTURE1) |
||
| 63 | { |
||
| 64 | static unsigned int pos_ICR; |
||
| 65 | static unsigned int ppm; |
||
| 66 | |||
| 67 | if ((TCCR1B & (1<<ICES1)) != 0) //rising edge |
||
| 68 | { |
||
| 69 | TCCR1B &= ~(1<<ICES1); //set falling egde |
||
| 70 | TMR1OvF = 0; |
||
| 71 | pos_ICR = ICR1; |
||
| 72 | } |
||
| 73 | else //falling edge |
||
| 74 | { |
||
| 75 | TCCR1B |= (1<<ICES1); //set rising egde |
||
| 76 | ppm = (ICR1 - pos_ICR + (int) TMR1OvF * 65536); |
||
| 77 | if ((ppm > 600) && (ppm < 2400)) |
||
| 78 | { |
||
| 79 | if (ppm > 2100) ppm = 2100; |
||
| 80 | if (ppm < 900) ppm = 900; |
||
| 81 | ppm = (PPM_SIGNAL * 3 + ppm) / 4; |
||
| 82 | PPM_SIGNAL = ppm; |
||
| 83 | if (PPM_NEW < 50) PPM_NEW++; |
||
| 84 | } |
||
| 85 | |||
| 86 | } |
||
| 87 | |||
| 88 | } |
||
| 89 | |||
| 90 | /*##############################################################################*/ |
||
| 91 | SIGNAL(SIG_OVERFLOW0) |
||
| 92 | { |
||
| 93 | // this function is called every 32us, |
||
| 94 | // it is very important that it's execution time is as short as possible |
||
| 95 | // currently it's about 20us |
||
| 96 | |||
| 97 | static unsigned char counter = 254; |
||
| 98 | static unsigned char ms1 = 0; |
||
| 99 | static unsigned char ch0_tmp = 0; |
||
| 100 | static unsigned char ch1_tmp = 0; |
||
| 101 | static unsigned char ch2_tmp = 0; |
||
| 102 | static unsigned char ch3_tmp = 0; |
||
| 103 | static unsigned char ch4_tmp = 0; |
||
| 104 | static unsigned char ch5_tmp = 0; |
||
| 105 | unsigned char PORTB_BAK; |
||
| 106 | unsigned char PORTD_BAK; |
||
| 107 | |||
| 108 | PORTB_BAK = PORTB; |
||
| 109 | PORTD_BAK = PORTD; |
||
| 110 | |||
| 111 | if (counter++ == 254) |
||
| 112 | { |
||
| 113 | PORTB_BAK LEDON (CH0_B | CH1_B | CH2_B); //new cycle, output on |
||
| 114 | PORTD_BAK LEDON (CH3_D | CH4_D | CH5_D); // |
||
| 65 | walter | 115 | |
| 64 | walter | 116 | ch0_tmp = CH0; |
| 117 | ch1_tmp = CH1; |
||
| 118 | ch2_tmp = CH2; |
||
| 119 | ch3_tmp = CH3; |
||
| 120 | ch4_tmp = CH4; |
||
| 121 | ch5_tmp = CH5; |
||
| 65 | walter | 122 | |
| 64 | walter | 123 | counter = 0; |
| 124 | } |
||
| 125 | |||
| 126 | if (ch0_tmp == counter) PORTB_BAK LEDOFF CH0_B; //channel value reached, output off |
||
| 127 | if (ch1_tmp == counter) PORTB_BAK LEDOFF CH1_B; // |
||
| 128 | if (ch2_tmp == counter) PORTB_BAK LEDOFF CH2_B; // |
||
| 129 | if (ch3_tmp == counter) PORTD_BAK LEDOFF CH3_D; // |
||
| 130 | if (ch4_tmp == counter) PORTD_BAK LEDOFF CH4_D; // |
||
| 131 | if (ch5_tmp == counter) PORTD_BAK LEDOFF CH5_D; // |
||
| 132 | |||
| 133 | PORTB = PORTB_BAK; |
||
| 134 | PORTD = PORTD_BAK; |
||
| 135 | |||
| 136 | if (ms1++ == 32) |
||
| 137 | { |
||
| 138 | ms1=0; |
||
| 139 | TMR1MS++; |
||
| 140 | } |
||
| 141 | |||
| 142 | |||
| 143 | |||
| 144 | |||
| 145 | } |
||
| 146 | |||
| 147 | |||
| 148 | /*##############################################################################*/ |
||
| 149 | unsigned int SetDelay (unsigned int t) |
||
| 150 | { |
||
| 151 | unsigned char hi_byte; |
||
| 152 | unsigned char lo_byte; |
||
| 153 | |||
| 154 | hi_byte = (TMR1MS >> 8); |
||
| 155 | lo_byte = (TMR1MS & 0xff); |
||
| 156 | if (hi_byte != (TMR1MS >> 8)) hi_byte = (TMR1MS >> 8); |
||
| 157 | |||
| 158 | return(((hi_byte << 8) | lo_byte) + t + 1); |
||
| 159 | } |
||
| 160 | |||
| 161 | |||
| 162 | /*##############################################################################*/ |
||
| 163 | char CheckDelay(unsigned int t) |
||
| 164 | { |
||
| 165 | unsigned char hi_byte; |
||
| 166 | unsigned char lo_byte; |
||
| 167 | |||
| 168 | hi_byte = (TMR1MS >> 8); |
||
| 169 | lo_byte = (TMR1MS & 0xff); |
||
| 170 | if (hi_byte != (TMR1MS >> 8)) hi_byte = (TMR1MS >> 8); |
||
| 171 | |||
| 172 | return(((t - ((hi_byte << 8) | lo_byte)) & 0x8000) >> 9); |
||
| 173 | } |
||
| 174 | |||
| 175 | |||
| 176 | |||
| 177 | /*##############################################################################*/ |
||
| 178 | void StartPWM(void) |
||
| 179 | { |
||
| 180 | //Timer 0 Config |
||
| 181 | TCCR0 = (0<<CS02)|(0<<CS01)|(1<<CS00); // (@8MHz) = 1/8us Clk = 256/8 = 32us overflow |
||
| 182 | TIMSK setbit (1<<TOIE0); // enable Int |
||
| 183 | |||
| 184 | } |
||
| 185 | |||
| 186 | |||
| 187 | /*##############################################################################*/ |
||
| 188 | void StartPPM(void) |
||
| 189 | { |
||
| 190 | |||
| 191 | //Timer1 Config |
||
| 192 | TCCR1A = (0<<COM1A1)|(0<<COM1A0)|(0<<COM1B1)|(0<<COM1B0)| |
||
| 193 | (0<<FOC1A) |(0<<FOC1B) |(0<<WGM10) |(0<<WGM11); |
||
| 194 | TCCR1B = (1<<ICNC1)|(1<<ICES1)|(0<<WGM13)| |
||
| 195 | (0<<WGM12)|(0<<CS12)|(1<<CS11)|(0<<CS10); //ICP_POS_FLANKE |
||
| 196 | |||
| 197 | // interrupts |
||
| 198 | TIMSK |= (1<<TICIE1)|(1<<TOIE1); //ICP_INT_ENABLE and TIMER1_INT_ENABLE |
||
| 199 | |||
| 200 | } |
||
| 201 | |||
| 202 | |||
| 203 | /*##############################################################################*/ |
||
| 204 | unsigned int GetPPM(void) |
||
| 205 | { |
||
| 206 | //this routines seems to be nesseccary, as reading a 16 bit value |
||
| 207 | //on a 8 bit machine is not atomic, so if an interrupt apears between reading |
||
| 208 | //low and high byte of the 16 bit value a wrong result is possible |
||
| 209 | |||
| 210 | unsigned char temp_hi; |
||
| 211 | unsigned char temp_lo; |
||
| 212 | |||
| 213 | temp_hi = (PPM_SIGNAL >> 8); |
||
| 214 | temp_lo = (PPM_SIGNAL & 0xff); |
||
| 215 | if (temp_hi != (PPM_SIGNAL >> 8)) temp_hi = (PPM_SIGNAL >> 8); |
||
| 216 | return( (temp_hi << 8) | temp_lo); |
||
| 217 | |||
| 218 | } |
||
| 219 | |||
| 220 | |||
| 221 | /*##############################################################################*/ |
||
| 222 | // MAIN |
||
| 223 | /*##############################################################################*/ |
||
| 224 | int main (void) |
||
| 225 | { |
||
| 226 | |||
| 227 | #define STEP 256 |
||
| 228 | #define MUL 1 |
||
| 229 | #define REDUCE 2 |
||
| 230 | |||
| 231 | #define EEPSIGNATURE 0x55aa |
||
| 232 | |||
| 233 | #define inimin 1200 |
||
| 234 | #define inimax 1800 |
||
| 235 | |||
| 236 | unsigned int ppm; |
||
| 237 | signed int color; |
||
| 65 | walter | 238 | volatile unsigned int setupdly; |
| 239 | volatile unsigned int ppmtodly; |
||
| 240 | volatile unsigned int flashdly; |
||
| 241 | |||
| 242 | volatile unsigned int dly1; |
||
| 243 | |||
| 244 | unsigned char flags; |
||
| 245 | |||
| 64 | walter | 246 | unsigned char setup; |
| 247 | unsigned int lmax; |
||
| 248 | unsigned int lmin; |
||
| 249 | unsigned int max; |
||
| 250 | unsigned int min; |
||
| 65 | walter | 251 | unsigned char temp; |
| 64 | walter | 252 | signed long temp1; |
| 253 | signed long temp2; |
||
| 254 | |||
| 65 | walter | 255 | flags = 0; |
| 256 | |||
| 64 | walter | 257 | DDRB = (CH0_B|CH1_B|CH2_B); |
| 258 | PORTB = 0x00; |
||
| 259 | |||
| 260 | DDRC = (ledred); |
||
| 261 | PORTC = 0x00; |
||
| 262 | |||
| 263 | DDRD = (ledgreen|CH3_D|CH4_D|CH5_D); |
||
| 264 | PORTD = 0x00; |
||
| 265 | |||
| 65 | walter | 266 | CH0 = 0xFF; //PORTB RGBLED red |
| 267 | CH1 = 0xFF; //PORTB RGBLED green |
||
| 268 | CH2 = 0xFF; //PORTB RGBLED blue |
||
| 269 | CH3 = 0; |
||
| 64 | walter | 270 | CH4 = 0; |
| 271 | CH5 = 0; |
||
| 272 | |||
| 273 | lmax = 0x0000; |
||
| 274 | lmin = 0xffff; |
||
| 275 | |||
| 65 | walter | 276 | StartUART(); |
| 64 | walter | 277 | StartPPM(); |
| 278 | //StartI2C(); |
||
| 279 | StartPWM(); |
||
| 280 | sei(); |
||
| 281 | |||
| 282 | min = inimin; //default min |
||
| 283 | max = inimax; //default max |
||
| 284 | |||
| 285 | if (eeprom_read_word(&EEPSIG) != EEPSIGNATURE) //check eep if signature is there |
||
| 286 | { |
||
| 287 | eeprom_write_word(&EEPMIN, min); //no, write initial min |
||
| 288 | eeprom_write_word(&EEPMAX, max); //and max values |
||
| 289 | eeprom_write_word(&EEPSIG, EEPSIGNATURE); //along with eep signature |
||
| 290 | } |
||
| 291 | else |
||
| 292 | { |
||
| 293 | |||
| 294 | min = eeprom_read_word(&EEPMIN); //signature ok |
||
| 295 | max = eeprom_read_word(&EEPMAX); //read min and max |
||
| 296 | } |
||
| 297 | |||
| 298 | |||
| 299 | setup = 0; //reset setup toggle counter |
||
| 65 | walter | 300 | temp = (1<<0); |
| 64 | walter | 301 | setupdly = SetDelay(5000); |
| 65 | walter | 302 | ppmtodly = SetDelay(2000); |
| 303 | flashdly = SetDelay(200); |
||
| 64 | walter | 304 | |
| 305 | while (1) |
||
| 306 | { |
||
| 307 | |||
| 308 | if (PPM_NEW > 20) //ppm Signal ok |
||
| 309 | { |
||
| 310 | PORTC clrbit ledred; |
||
| 311 | ppm = GetPPM(); |
||
| 312 | ppmtodly = SetDelay(500); //reset timeout |
||
| 313 | if (lmax < ppm) lmax=ppm; //update impulse max |
||
| 314 | if (lmin > ppm) lmin=ppm; //and min boundarys |
||
| 315 | } |
||
| 316 | else |
||
| 317 | { |
||
| 318 | PORTC setbit ledred; //ppm signal not ok |
||
| 319 | ppm = min; //set ppm to minimum |
||
| 320 | } |
||
| 321 | |||
| 322 | |||
| 323 | if (CheckDelay(ppmtodly)) //timeout |
||
| 324 | { |
||
| 325 | ppmtodly = SetDelay(5000); |
||
| 326 | PPM_NEW = 0; //set ppm signal not ok |
||
| 327 | } |
||
| 328 | |||
| 329 | |||
| 330 | if (setup < 6) |
||
| 331 | { |
||
| 332 | if ((ppm > 1600) && ((setup&1)==0)) setup++; // |
||
| 333 | if ((ppm < 1400) && ((setup&1)==1)) setup++; // |
||
| 334 | |||
| 335 | if (CheckDelay(flashdly)) |
||
| 336 | { |
||
| 65 | walter | 337 | CH0 = (temp & (1<<0)) * 255; |
| 338 | CH1 = (temp & (1<<1)) * 255; |
||
| 339 | CH2 = (temp & (1<<2)) * 255; |
||
| 340 | CH3 = (temp & (1<<3)) * 255; |
||
| 341 | CH4 = (temp & (1<<4)) * 255; |
||
| 342 | CH5 = (temp & (1<<5)) * 255; |
||
| 343 | temp <<= 1; |
||
| 344 | if (temp == (1<<6)) temp = (1<<0); |
||
| 345 | |||
| 346 | /* |
||
| 347 | CH0 = CH0 ^ 0xff; //invert brightness |
||
| 64 | walter | 348 | CH1 = CH1 ^ 0xff; |
| 349 | CH2 = CH2 ^ 0xff; |
||
| 65 | walter | 350 | CH3 = CH3 ^ 0xff; |
| 351 | CH4 = CH4 ^ 0xff; |
||
| 352 | CH5 = CH5 ^ 0xff; |
||
| 353 | */ |
||
| 354 | |||
| 355 | flashdly = SetDelay(100); |
||
| 64 | walter | 356 | } |
| 357 | } |
||
| 358 | |||
| 359 | if (setup == 6) //if stick is toggled 6 times |
||
| 360 | { //within setup timeout |
||
| 361 | PORTD setbit ledgreen; //store ppm min and max |
||
| 362 | setupdly = SetDelay(3000); //for 2000ms |
||
| 363 | eeprom_write_word(&EEPMIN, lmin); //in eeprom |
||
| 364 | eeprom_write_word(&EEPMAX, lmax); |
||
| 365 | min = lmin; |
||
| 366 | max = lmax; |
||
| 367 | setup = 7; //enter PWM toggle mode |
||
| 368 | |||
| 369 | } |
||
| 370 | |||
| 371 | |||
| 372 | if (setup == 7) |
||
| 373 | { |
||
| 374 | if (CheckDelay(flashdly)) //each 25ms toggle PWM's |
||
| 375 | { |
||
| 65 | walter | 376 | CH0 = CH0 ^ 0xff; //invert brightness |
| 64 | walter | 377 | CH1 = CH1 ^ 0xff; |
| 378 | CH2 = CH2 ^ 0xff; |
||
| 65 | walter | 379 | CH3 = CH3 ^ 0xff; |
| 380 | CH4 = CH4 ^ 0xff; |
||
| 381 | CH5 = CH5 ^ 0xff; |
||
| 382 | |||
| 64 | walter | 383 | flashdly = SetDelay(25); |
| 384 | } |
||
| 385 | |||
| 386 | } |
||
| 387 | |||
| 65 | walter | 388 | if ((CheckDelay(setupdly)) && setup < 8) //setup timeout reached |
| 64 | walter | 389 | { |
| 390 | setup = 8; //lockdown setup |
||
| 391 | PORTD clrbit ledgreen; |
||
| 65 | walter | 392 | CH0 = 0; //start CH3 |
| 393 | CH1 = 85; //CH4 |
||
| 394 | CH2 = 170; //and CH4 with about 120° phase shift |
||
| 395 | |||
| 396 | flags = 0; |
||
| 397 | dly1 = SetDelay(100); |
||
| 64 | walter | 398 | } |
| 399 | |||
| 400 | |||
| 401 | if (setup == 8) |
||
| 402 | { |
||
| 403 | |||
| 65 | walter | 404 | |
| 405 | /************************************************************************************/ |
||
| 406 | /* control CH3, CH4 and CH5 (RGB LED) */ |
||
| 407 | /************************************************************************************/ |
||
| 408 | |||
| 409 | temp1 = ((long)STEP * 7 * 40000) / ((max-REDUCE) - (min+REDUCE)); |
||
| 64 | walter | 410 | temp2 = (((int)ppm - ((int)min+REDUCE)) * temp1); |
| 65 | walter | 411 | color = temp2 / 40000; |
| 64 | walter | 412 | |
| 413 | if (color < 0) color = 0; |
||
| 65 | walter | 414 | if (color > ((STEP*7)+1)) color = ((STEP*7)+1); |
| 64 | walter | 415 | |
| 416 | |||
| 417 | //printf("p %u ",ppm); |
||
| 418 | //printf("pm %u ",(min+REDUCE)); |
||
| 419 | //printf("t1 %li ",temp1); |
||
| 420 | //printf("t2 %li ",temp2); |
||
| 421 | //printf("c %i\n ",color); |
||
| 422 | |||
| 423 | |||
| 65 | walter | 424 | // Farbablauf: off > red > purple > blue > cyan > green > yellow > white |
| 64 | walter | 425 | if ((color >= (STEP * 0)) && (color < (STEP * 1))) |
| 426 | { |
||
| 65 | walter | 427 | CH3 = MUL * ((color - (STEP * 0))); //fade in red > red (red only) |
| 428 | CH4 = 0; |
||
| 429 | CH5 = 0; |
||
| 64 | walter | 430 | } |
| 431 | if ((color >= (STEP * 1)) && (color < (STEP * 2))) |
||
| 432 | { |
||
| 65 | walter | 433 | CH3 = ((STEP-1) * MUL); |
| 434 | CH4 = 0; |
||
| 435 | CH5 = MUL * ((color - (STEP * 1))); //fade in blue > purple (red + blue) |
||
| 64 | walter | 436 | } |
| 437 | if ((color >= (STEP * 2)) && (color < (STEP * 3))) |
||
| 438 | { |
||
| 65 | walter | 439 | CH3 = MUL * ((STEP - 1) - (color - (STEP * 2))); //fade out red > blue (blue only) |
| 440 | CH4 = 0; |
||
| 441 | CH5 = ((STEP-1) * MUL); |
||
| 64 | walter | 442 | } |
| 443 | if ((color >= (STEP * 3)) && (color < (STEP * 4))) |
||
| 444 | { |
||
| 65 | walter | 445 | CH3 = 0; |
| 446 | CH4 = MUL * ((color - (STEP * 3))); //fade in green > cyan (blue + green) |
||
| 447 | CH5 = ((STEP-1) * MUL); |
||
| 64 | walter | 448 | } |
| 449 | if ((color >= (STEP * 4)) && (color < (STEP * 5))) |
||
| 450 | { |
||
| 65 | walter | 451 | CH3 = 0; |
| 452 | CH4 = ((STEP-1) * MUL); |
||
| 453 | CH5 = MUL * ((STEP - 1) - (color - (STEP * 4))); //fade out blue > green (green only) |
||
| 64 | walter | 454 | } |
| 455 | if ((color >= (STEP * 5)) && (color < (STEP * 6))) |
||
| 456 | { |
||
| 65 | walter | 457 | CH3 = MUL * ((color - (STEP * 5))); //fade in red > yellow (green + red) |
| 458 | CH4 = ((STEP-1) * MUL); |
||
| 459 | CH5 = 0; |
||
| 64 | walter | 460 | } |
| 65 | walter | 461 | if ((color >= (STEP * 6)) && (color < (STEP * 7))) |
| 64 | walter | 462 | { |
| 65 | walter | 463 | CH3 = ((STEP-1) * MUL); |
| 464 | CH4 = ((STEP-1) * MUL); |
||
| 465 | CH5 = MUL * ((color - (STEP * 1))); //fade in blue > purple (red + blue) |
||
| 64 | walter | 466 | } |
| 65 | walter | 467 | |
| 468 | if (color >= (STEP * 7)) |
||
| 469 | { |
||
| 470 | CH3 = ((STEP-1) * MUL); |
||
| 471 | CH4 = ((STEP-1) * MUL); |
||
| 472 | CH5 = ((STEP-1) * MUL); |
||
| 473 | } |
||
| 474 | |||
| 475 | /************************************************************************************/ |
||
| 476 | /* control CH0, CH1 and CH2 */ |
||
| 477 | /************************************************************************************/ |
||
| 478 | |||
| 479 | if (CheckDelay(dly1)) //timeout reached ? |
||
| 480 | { |
||
| 481 | |||
| 482 | if ((flags & (1<<0))==0) //check if up or down |
||
| 483 | { |
||
| 484 | if (CH0++ == 254) //run CH0 up to 255 |
||
| 485 | { |
||
| 486 | flags setbit (1<<0); //255 reached next time go down |
||
| 487 | |||
| 488 | } |
||
| 489 | } |
||
| 490 | else //run down |
||
| 491 | { |
||
| 492 | if (CH0-- == 1) //run CH0 down to 0 |
||
| 493 | { |
||
| 494 | flags clrbit (1<<0); //0 reached next time go up |
||
| 495 | } |
||
| 496 | |||
| 497 | } |
||
| 498 | |||
| 499 | |||
| 500 | if ((flags & (1<<1))==0) //same for CH1 |
||
| 501 | { |
||
| 502 | if (CH1++ == 254) |
||
| 503 | { |
||
| 504 | flags setbit (1<<1); |
||
| 505 | } |
||
| 506 | } |
||
| 507 | else |
||
| 508 | { |
||
| 509 | if (CH1-- == 1) |
||
| 510 | { |
||
| 511 | flags clrbit (1<<1); |
||
| 512 | } |
||
| 513 | |||
| 514 | } |
||
| 515 | |||
| 516 | |||
| 517 | if ((flags & (1<<2))==0) //and same for CH2 |
||
| 518 | { |
||
| 519 | if (CH2++ == 254) |
||
| 520 | { |
||
| 521 | flags setbit (1<<2); |
||
| 522 | } |
||
| 523 | } |
||
| 524 | else |
||
| 525 | { |
||
| 526 | if (CH2-- == 1) |
||
| 527 | { |
||
| 528 | flags clrbit (1<<2); |
||
| 529 | } |
||
| 530 | |||
| 531 | } |
||
| 532 | |||
| 533 | |||
| 534 | dly1 = SetDelay(1); //set next timeout in 25ms |
||
| 535 | |||
| 536 | // printf("ch3:%i\n",CH0); |
||
| 537 | } |
||
| 538 | |||
| 64 | walter | 539 | } |
| 540 | |||
| 541 | } |
||
| 542 | |||
| 543 | } |
||
| 544 |