| 1 | #include <avr/io.h> |
| 2 | #include <avr/interrupt.h> |
| 3 | #include <inttypes.h> |
| 4 | |
| 5 | #define SEGA 128 |
| 6 | #define SEGB 64 |
| 7 | #define SEGC 4 |
| 8 | #define SEGD 16 |
| 9 | #define SEGE 32 |
| 10 | #define SEGF 2 |
| 11 | #define SEGG 1 |
| 12 | #define SEGP 8 |
| 13 | |
| 14 | uint8_t font[16] = { |
| 15 | SEGA | SEGB | SEGC | SEGD | SEGE | SEGF, |
| 16 | SEGB | SEGC, |
| 17 | SEGA | SEGB | SEGD | SEGE | SEGG, |
| 18 | SEGA | SEGB | SEGC | SEGD | SEGG, |
| 19 | SEGB | SEGC | SEGF | SEGG, |
| 20 | SEGA | SEGC | SEGD | SEGF | SEGG, |
| 21 | SEGA | SEGC | SEGD | SEGE | SEGF | SEGG, |
| 22 | SEGA | SEGB | SEGC, |
| 23 | SEGA | SEGB | SEGC | SEGD | SEGE | SEGF | SEGG, |
| 24 | SEGA | SEGB | SEGC | SEGD | SEGF | SEGG, |
| 25 | SEGA | SEGB | SEGC | SEGE | SEGF | SEGG, |
| 26 | SEGC | SEGD | SEGE | SEGF | SEGG, |
| 27 | SEGA | SEGD | SEGE | SEGF, |
| 28 | SEGB | SEGC | SEGD | SEGE | SEGG, |
| 29 | SEGA | SEGD | SEGE | SEGF | SEGG, |
| 30 | SEGA | SEGE | SEGF | SEGG, |
| 31 | }; |
| 32 | /* LED */ |
| 33 | uint8_t dsp[2] = {0, 0}; |
| 34 | char leda = 0; |
| 35 | char ledc = 0; |
| 36 | /* Timer */ |
| 37 | char of = 0; |
| 38 | int oticks = 0; |
| 39 | /* Pulse counter */ |
| 40 | char pstate = 0; |
| 41 | char pval = 0; |
| 42 | /* Switch */ |
| 43 | char sstate = 0; |
| 44 | int stime = 0; |
| 45 | /* Temp sensor */ |
| 46 | char tstate = 0; |
| 47 | char tlock = 0; |
| 48 | unsigned long tstart; |
| 49 | unsigned long ttime; |
| 50 | unsigned long ttimea = 10000; |
| 51 | /* Zero-cross detector*/ |
| 52 | /* Triac */ |
| 53 | |
| 54 | void init(void) |
| 55 | { |
| 56 | /* Timer init */ |
| 57 | TCCR1A = 0; |
| 58 | TCCR1B = 1; |
| 59 | TIMSK1 = 1; |
| 60 | |
| 61 | /* |
| 62 | * B0..2 = Pulse sensor |
| 63 | * B3..5 = ISP |
| 64 | * B6..7 = CLK |
| 65 | */ |
| 66 | DDRB = 0x00; |
| 67 | PORTB = 0x07; |
| 68 | PCMSK0 = 0x07; |
| 69 | PCICR = 0x01; |
| 70 | /* |
| 71 | * C0..5 = LEDA0..5 |
| 72 | * C6 = /RESET |
| 73 | * C7 = NC |
| 74 | */ |
| 75 | DDRC = 0x3f; |
| 76 | PORTC = 0x00; |
| 77 | /* |
| 78 | * D0 = Triac |
| 79 | * D1 = NTC FET |
| 80 | * D2 = ZCD (INT0) |
| 81 | * D3 = NTC Op-amp (INT1) |
| 82 | * D4..5 = LEDA6..7 |
| 83 | * D6..7 = LEDC0..1 |
| 84 | */ |
| 85 | DDRD = 0xf3; |
| 86 | PORTD = 0x00; |
| 87 | EICRA = 0x0d; |
| 88 | EIMSK = 0x03; |
| 89 | } |
| 90 | |
| 91 | unsigned char bindisp(unsigned char num) |
| 92 | { |
| 93 | unsigned char ret; |
| 94 | |
| 95 | ret = 0; |
| 96 | if(num & 1) |
| 97 | ret |= SEGA; |
| 98 | if(num & 2) |
| 99 | ret |= SEGB; |
| 100 | if(num & 4) |
| 101 | ret |= SEGC; |
| 102 | if(num & 8) |
| 103 | ret |= SEGD; |
| 104 | if(num & 16) |
| 105 | ret |= SEGE; |
| 106 | if(num & 32) |
| 107 | ret |= SEGF; |
| 108 | if(num & 64) |
| 109 | ret |= SEGG; |
| 110 | if(num & 128) |
| 111 | ret |= SEGP; |
| 112 | return(ret); |
| 113 | } |
| 114 | |
| 115 | void display(char num) |
| 116 | { |
| 117 | dsp[0] = font[(num / 10) % 10]; |
| 118 | dsp[1] = font[num % 10]; |
| 119 | } |
| 120 | |
| 121 | void disphex(unsigned char num) |
| 122 | { |
| 123 | dsp[0] = font[(num & 0xf0) >> 4]; |
| 124 | dsp[1] = font[num & 0x0f]; |
| 125 | } |
| 126 | |
| 127 | unsigned long getticks(void) |
| 128 | { |
| 129 | return(TCNT1 + (((unsigned long)oticks) << 16)); |
| 130 | } |
| 131 | |
| 132 | void ledcycle(void) |
| 133 | { |
| 134 | static uint16_t last = 0; |
| 135 | uint8_t c, d, v; |
| 136 | |
| 137 | if(TCNT1 - last > 500) { |
| 138 | last = TCNT1; |
| 139 | if(++leda >= 8) { |
| 140 | leda = 0; |
| 141 | if(++ledc >= 2) |
| 142 | ledc = 0; |
| 143 | } |
| 144 | if(dsp[ledc] & (1 << leda)) { |
| 145 | if(leda < 6) { |
| 146 | c = 1 << leda; |
| 147 | d = 0; |
| 148 | } else { |
| 149 | c = 0; |
| 150 | d = 0x10 << (leda - 6); |
| 151 | } |
| 152 | d |= ledc?0x40:0x80; |
| 153 | } else { |
| 154 | c = d = 0; |
| 155 | } |
| 156 | PORTC = c; |
| 157 | PORTD = (PORTD & 0x0f) | d; |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | void tempcycle(void) |
| 162 | { |
| 163 | unsigned long now; |
| 164 | |
| 165 | now = getticks(); |
| 166 | if(tstate == 0) { |
| 167 | if((PIND & 8) && (tlock == 0)) { |
| 168 | PORTD |= 2; |
| 169 | tstart = now; |
| 170 | tstate = 1; |
| 171 | } |
| 172 | } else if(tstate == 1) { |
| 173 | if(now - tstart > 1000) { |
| 174 | PORTD &= ~2; |
| 175 | tstate = 0; |
| 176 | tstart = now; |
| 177 | } |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | void calcavg(void) |
| 182 | { |
| 183 | if(tlock == 1) { |
| 184 | tlock = 2; |
| 185 | ttimea = ((ttimea * 15) + ttime) >> 4; |
| 186 | tlock = 0; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | int main(void) |
| 191 | { |
| 192 | int cur; |
| 193 | |
| 194 | cur = 0; |
| 195 | init(); |
| 196 | sei(); |
| 197 | display(0); |
| 198 | while(1) { |
| 199 | ledcycle(); |
| 200 | tempcycle(); |
| 201 | calcavg(); |
| 202 | |
| 203 | /* |
| 204 | dsp[0] = bindisp((ttimea & 0xff00) >> 8); |
| 205 | dsp[1] = bindisp(ttimea & 0x00ff); |
| 206 | */ |
| 207 | /* |
| 208 | disphex((ttimea & 0xff000) >> 12); |
| 209 | */ |
| 210 | if(ttimea < 20000) { |
| 211 | display((ttimea / 100) % 100); |
| 212 | dsp[0] |= SEGP; |
| 213 | if(ttimea >= 10000) |
| 214 | dsp[1] |= SEGP; |
| 215 | } else { |
| 216 | display(ttimea / 1000); |
| 217 | } |
| 218 | |
| 219 | /* |
| 220 | cur += pval; |
| 221 | pval = 0; |
| 222 | if(sstate == 2) { |
| 223 | cur = stime; |
| 224 | sstate = 0; |
| 225 | } |
| 226 | if(cur > 99) |
| 227 | cur = 99; |
| 228 | if(cur < -99) |
| 229 | cur = -99; |
| 230 | if(cur < 0) { |
| 231 | display(-cur); |
| 232 | dsp[0] |= SEGP; |
| 233 | } else { |
| 234 | display(cur); |
| 235 | } |
| 236 | */ |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | ISR(SIG_INTERRUPT0) |
| 241 | { |
| 242 | } |
| 243 | |
| 244 | ISR(SIG_INTERRUPT1) |
| 245 | { |
| 246 | unsigned long now; |
| 247 | |
| 248 | now = getticks(); |
| 249 | if(tstate == 0) { |
| 250 | tstate = 1; |
| 251 | if(tlock != 2) |
| 252 | ttime = now - tstart; |
| 253 | tstart = now; |
| 254 | PORTD |= 2; |
| 255 | tlock = 1; |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | ISR(SIG_OVERFLOW1) |
| 260 | { |
| 261 | of = 1; |
| 262 | oticks++; |
| 263 | } |
| 264 | |
| 265 | ISR(SIG_PIN_CHANGE0) |
| 266 | { |
| 267 | if((sstate == 0) & ((PINB & 1) == 0)) { |
| 268 | stime = oticks; |
| 269 | sstate = 1; |
| 270 | } |
| 271 | if((sstate == 1) & ((PINB & 1) == 1)) { |
| 272 | stime = oticks - stime; |
| 273 | sstate = 2; |
| 274 | } |
| 275 | if(pstate == 0) { |
| 276 | if((PINB & 2) == 0) { |
| 277 | pstate = 1; |
| 278 | } else if((PINB & 4) == 0) { |
| 279 | pstate = 2; |
| 280 | } |
| 281 | } else if(pstate == 1) { |
| 282 | if((PINB & 4) == 0) { |
| 283 | pval++; |
| 284 | pstate = 3; |
| 285 | } else { |
| 286 | pstate = 0; |
| 287 | } |
| 288 | } else if(pstate == 2) { |
| 289 | if((PINB & 2) == 0) { |
| 290 | pval--; |
| 291 | pstate = 3; |
| 292 | } else { |
| 293 | pstate = 0; |
| 294 | } |
| 295 | } else { |
| 296 | if((PINB & 2) && (PINB & 4)) |
| 297 | pstate = 0; |
| 298 | } |
| 299 | } |