DS18B20_VOC_DS2438_SHT/DS18B20_DS2438.c

   1         \r
   2 // Copyright (c) 2015, Tobias Mueller tm(at)tm3d.de\r
   3 // All rights reserved.\r
   4 //\r
   5 // Redistribution and use in source and binary forms, with or without\r
   6 // modification, are permitted provided that the following conditions are\r
   7 // met:\r
   8 //\r
   9 //  * Redistributions of source code must retain the above copyright\r
  10 //    notice, this list of conditions and the following disclaimer.\r
  11 //  * Redistributions in binary form must reproduce the above copyright\r
  12 //    notice, this list of conditions and the following disclaimer in the\r
  13 //    documentation and/or other materials provided with the\r
  14 //    distribution.\r
  15 //  * All advertising materials mentioning features or use of this\r
  16 //    software must display the following acknowledgement: This product\r
  17 //    includes software developed by tm3d.de and its contributors.\r
  18 //  * Neither the name of tm3d.de nor the names of its contributors may\r
  19 //    be used to endorse or promote products derived from this software\r
  20 //    without specific prior written permission.\r
  21 //\r
  22 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\r
  23 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\r
  24 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\r
  25 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\r
  26 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\r
  27 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\r
  28 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\r
  29 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\r
  30 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\r
  31 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\r
  32 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
  33 \r
  34 #define F_CPU 8000000UL\r
  35 #include <avr/io.h>\r
  36 #include <avr/interrupt.h>\r
  37 #include <util/delay.h>  \r
  38 #include <avr/wdt.h>\r
  39 #include <avr/sleep.h>\r
  40 #include <avr/pgmspace.h>\r
  41 #include "../common/I2C/USI_TWI_Master.h"\r
  42 #include "../common/I2C/MAX1164x.h"\r
  43 #include "../common/I2C/SHT2x.h"\r
  44 #include "../common/calibr.h"\r
  45 \r
  46 extern void OWINIT(void);\r
  47 extern void EXTERN_SLEEP(void);\r
  48 \r
  49 \r
  50 \r
  51 volatile uint8_t owid1[8]={0x28, 0xA3, 0xD9, 0x84, 0x00, 0x16, 0x05, 0x18};/**/\r
  52 volatile uint8_t owid2[8]={0x26, 0xA3, 0xD9, 0x84, 0x00, 0x16, 0x05, 0x67};/**/\r
  53 volatile uint8_t config_info1[16]={0x08,0x01, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00};        \r
  54 volatile uint8_t config_info2[16]={0x01,0x06, 0x05,0x08, 0x04,0x07, 0x07,0x08, 0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00};        \r
  55         \r
  56 #if (owid>128) \r
  57 #error "Variable not correct"\r
  58 #endif\r
  59 \r
  60 extern uint8_t mode;\r
  61 extern uint8_t gcontrol;\r
  62 extern uint8_t reset_indicator;\r
  63 extern uint8_t alarmflag;\r
  64 volatile uint8_t wdcounter=1;\r
  65 \r
  66 \r
  67 #if  defined(__AVR_ATtiny24__)||defined(__AVR_ATtiny44__)  || defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny24A__)||defined(__AVR_ATtiny44A__)  || defined(__AVR_ATtiny84A__)\r
  68 ISR(WATCHDOG_vect) {\r
  69 #else\r
  70 ISR(WDT_vect) {\r
  71 #endif \r
  72         wdcounter++;\r
  73         if (reset_indicator==1) reset_indicator++;\r
  74         else if (reset_indicator==2) mode=0;\r
  75 \r
  76 \r
  77 }\r
  78 \r
  79 \r
  80 typedef union {\r
  81         volatile uint8_t bytes[8];\r
  82         struct {\r
  83                 uint16_t temp;  //0\r
  84                 uint8_t TH;  //2\r
  85                 uint8_t TL;  //3\r
  86                 uint8_t config;  //4\r
  87                 uint8_t rrFF; //5\r
  88                 uint8_t rr00; //6\r
  89                 uint8_t rr10; //7\r
  90         };\r
  91 } pack1_t;\r
  92 volatile pack1_t pack1;\r
  93 \r
  94 \r
  95 \r
  96 typedef union {\r
  97         #if  defined(__AVR_ATtiny25__)\r
  98         volatile uint8_t bytes[16];\r
  99         #else\r
 100         volatile uint8_t bytes[64];\r
 101         #endif\r
 102         struct {\r
 103                 uint8_t status;  //1\r
 104                 int16_t temp;  //2\r
 105                 uint16_t voltage;  //4\r
 106                 int16_t current;  //6\r
 107                 uint8_t threshold; //8\r
 108                 \r
 109                 uint8_t page1[8]; //9\r
 110                 #if  defined(__AVR_ATtiny25__)\r
 111                 #else\r
 112                 uint8_t page2[8]; //17\r
 113                 union{ \r
 114                         uint8_t page3[8]; //25\r
 115                         struct {\r
 116                                 uint16_t R0;\r
 117                                 uint16_t VS;\r
 118                                 uint8_t cmode;\r
 119                                 int16_t ip;\r
 120                                 uint8_t free;\r
 121                         };\r
 122                 };\r
 123                 union{ \r
 124                         uint8_t page4[8];  //33\r
 125                         struct {\r
 126                                 uint16_t tol_s8;\r
 127                                 uint16_t tol_d;\r
 128                                 uint16_t r_day_max;\r
 129                                 uint16_t r_week_max;\r
 130                         };\r
 131                 };\r
 132                 uint8_t page5[8];  //41\r
 133                 uint8_t page6[8];  //49\r
 134                 uint8_t page7[8];  //57\r
 135                 //uint8_t crc;  //65\r
 136                 #endif\r
 137         };\r
 138 } pack2_t;\r
 139 volatile pack2_t pack2;\r
 140 \r
 141 \r
 142 \r
 143 \r
 144 volatile int16_t am2302_temp;\r
 145 volatile uint16_t am2302_hum;\r
 146 \r
 147 \r
 148 uint8_t userRegister[1];\r
 149 int16_t sRH,sT;\r
 150 double temperatureC,humidityRH,hhum;\r
 151 double l;\r
 152 \r
 153 uint8_t max_adr=0;\r
 154 #define CH0_M MAX1164x_C_SCAN0|MAX1164x_C_SGL\r
 155 #define CH1_M MAX1164x_C_SCAN0|MAX1164x_C_SGL|MAX1164x_C_CS0\r
 156 #define CH0_CH1 MAX1164x_C_SCAN0\r
 157 //|MAX1164x_C_CS0\r
 158 \r
 159 uint16_t weekmaxarr[8];\r
 160 \r
 161 inline double interp(double t, double h) {\r
 162         double h2;\r
 163          double t2;\r
 164         h2=h*h;\r
 165         t2=t*t;\r
 166         return 4.76111e-9*h2*t2-3.96956e-7*h2*t+0.0000408889*h2-1.07132e-6*h*t2+0.000115968*h*t-0.0101333*h+0.000163806*t2-0.0241179*t+1.80591;\r
 167 }\r
 168 \r
 169 double R0;\r
 170 uint16_t mr;\r
 171 uint8_t startup=10;\r
 172 double ip;\r
 173 \r
 174 #define EEPROM_R0 0\r
 175 #define EEPROM_R0d 2\r
 176 #define EEPROM_R0w 4\r
 177 #define EEPROM_dol 6\r
 178 \r
 179 \r
 180 uint16_t readEEPROM(uint8_t addr,uint16_t def) {\r
 181         uint16_t hr;\r
 182         while(EECR & (1<<EEPE));\r
 183         EEARL=addr+1;\r
 184         EECR |= (1<<EERE);\r
 185         hr=EEDR;\r
 186         if (hr!=0xFF) {\r
 187                 hr=hr<<8;\r
 188                 while(EECR & (1<<EEPE));\r
 189                 EEARL=addr;\r
 190                 EECR |= (1<<EERE);\r
 191                 hr|=EEDR;\r
 192                 return hr;\r
 193         }\r
 194         return def;\r
 195 }\r
 196 \r
 197 void writeEEPROM(uint8_t addr,uint16_t val) {\r
 198         while(EECR & (1<<EEPE));\r
 199         EECR = (0<<EEPM1)|(0<<EEPM0);\r
 200         EEARL = addr;\r
 201         EEDR = val&0xFF;\r
 202         EECR |= (1<<EEMPE);\r
 203         EECR |= (1<<EEPE);\r
 204         while(EECR & (1<<EEPE));\r
 205         EECR = (0<<EEPM1)|(0<<EEPM0);\r
 206         EEARL = addr+1;\r
 207         EEDR = val>>8;\r
 208         EECR |= (1<<EEMPE);\r
 209         EECR |= (1<<EEPE);\r
 210 }\r
 211 \r
 212 int main(void){\r
 213         //volatile double test=calibr_hum(20,1,20);\r
 214     PRR|=(1<<PRADC);  // adc for save Power\r
 215         pack1.temp=0x0550;\r
 216         pack1.config=0x7F;\r
 217         pack1.TH=75;\r
 218         pack1.TL=70;\r
 219         pack1.rrFF=0xFF;\r
 220         pack1.rr00=0;\r
 221         pack1.rr10=0x10;\r
 222         PORTA=0xFF;\r
 223         PORTB=0xFF;\r
 224         OWINIT();\r
 225         PORTB|=(1<<PINB1);\r
 226         DDRB|=(1<<PINB1);\r
 227         PORTA|=(1<<PINA0);\r
 228         DDRA|=(1<<PINA0);\r
 229         \r
 230         MCUCR &=~(1<<PUD); //All Pins Pullup...\r
 231         MCUCR |=(1<<BODS);\r
 232         \r
 233         pack2.cmode=0;\r
 234         pack2.R0=readEEPROM(EEPROM_R0,1);\r
 235         R0=pack2.R0/100.0;\r
 236                 \r
 237         pack2.r_day_max=readEEPROM(EEPROM_R0d,1);\r
 238         pack2.r_week_max=readEEPROM(EEPROM_R0w,1);\r
 239         pack2.tol_d=readEEPROM(EEPROM_dol,0); \r
 240         pack2.tol_s8=0;  //Tag faengt mit Einschalten an\r
 241         for(uint8_t i=0;i<7;i++) {\r
 242                 weekmaxarr[i]=pack2.r_week_max;\r
 243         }\r
 244 \r
 245         WDTCSR |= ((1<<WDCE) );   // Enable the WD Change Bit//| (1<<WDE)\r
 246         WDTCSR |=   (1<<WDIE) |              // Enable WDT Interrupt\r
 247         //(1<<WDP0) |(1<<WDP2) | (1<<WDP1);    // Set Timeout to ~2 seconds\r
 248         (1<<WDP3) | (1<<WDP0);    // Set Timeout to ~8 seconds\r
 249 \r
 250         MCUSR=0;\r
 251         USI_TWI_Master_Initialise();\r
 252         \r
 253         SHT2x_SoftReset();\r
 254         SHT2x_ReadUserRegister(userRegister);\r
 255         SHT2x_WriteUserRegister(userRegister); //write changed user reg\r
 256         MAX1164x_config(MAX1164x_S_SEL2|MAX1164x_S_SEL0,CH0_M);//#define MAX1164x_C_CS0\r
 257         _delay_ms(30); //Internal Referenz start\r
 258         //2970 -> 1,5V  \r
 259         gcontrol=1;\r
 260         sei();\r
 261         //DDRB|=(1<<PINB1);\r
 262     while(1)   {\r
 263                 if (pack1.config==0x1F) {\r
 264                         pack1.config=0x7F;\r
 265                         R0=1;\r
 266                         pack2.R0=0;\r
 267                         writeEEPROM(EEPROM_R0,0);\r
 268                 } \r
 269                 if (pack1.config==0x05) {\r
 270                         pack1.config=0x7F;                              \r
 271                         pack2.r_day_max=1;\r
 272                         pack2.r_week_max=1;\r
 273                         pack2.tol_d=0;\r
 274                         pack2.tol_s8=0;  //Tag faengt mit Einschalten an        \r
 275                         R0=1;   \r
 276                         writeEEPROM(EEPROM_R0,0xFF);\r
 277                         writeEEPROM(EEPROM_R0d,0xFF);  //Maximum des Tages\r
 278                         writeEEPROM(EEPROM_R0w,0xFF); //Maximum der Letzten 7 Tage\r
 279                         writeEEPROM(EEPROM_dol,0xFF); //Anzahl der Betriebstage         \r
 280                         for(uint8_t i=0;i<7;i++) {\r
 281                                 weekmaxarr[i]=1;\r
 282                         }                               \r
 283                 } \r
 284                 if (wdcounter>0) {\r
 285                         pack2.tol_s8++;\r
 286                         if (pack2.tol_s8>(10000))  {//10800 ist theortisch der Tag aber meistens zu lang\r
 287                                 pack2.tol_s8=0;\r
 288                                 pack2.tol_d++;  //rund 180 Jahre :-)\r
 289                                 pack2.r_week_max=0;\r
 290                                 weekmaxarr[7]=pack2.r_day_max;\r
 291                                 for(uint8_t i=0;i<7;i++) {\r
 292                                         weekmaxarr[i]=weekmaxarr[i+1];\r
 293                                         if (weekmaxarr[i]>pack2.r_week_max) pack2.r_week_max=weekmaxarr[i];\r
 294                                 }\r
 295                                 if (pack2.tol_d>7) {\r
 296                                         pack2.R0=pack2.r_week_max;\r
 297                                 } else {\r
 298                                         pack2.R0=pack2.r_day_max;\r
 299                                 }\r
 300                                 R0=pack2.R0/100.0-0.5*(pack2.R0/100-R0);\r
 301                                 pack2.R0=R0*100;\r
 302                                 writeEEPROM(EEPROM_R0,pack2.R0);\r
 303                                 writeEEPROM(EEPROM_R0d,pack2.r_day_max);  //Maximum des Tages\r
 304                                 writeEEPROM(EEPROM_R0w,pack2.r_week_max); //Maximum der Letzten 7 Tage\r
 305                                 writeEEPROM(EEPROM_dol,pack2.tol_d); //Anzahl der Betriebstage\r
 306                                 pack2.r_day_max=0;\r
 307                         }\r
 308                         if (startup!=0) startup--;\r
 309                         SHT2x_MeasurePoll(HUMIDITY, &sRH);\r
 310                         // --- measure temperature with "Polling Mode" (no hold master) ---\r
 311                         SHT2x_MeasurePoll(TEMP, &sT);\r
 312                         //-- calculate humidity and temperature --\r
 313                         temperatureC = SHT2x_CalcTemperatureC(sT);\r
 314                         humidityRH = SHT2x_CalcRH(sRH);\r
 315                         ip=interp(temperatureC,humidityRH);\r
 316                         pack2.ip=ip*1000;\r
 317                         humidityRH=calibr_hum(temperatureC,-0.45,humidityRH)*10.0;\r
 318                         //humidityRH=humidityRH*10.0;\r
 319                         temperatureC =temperatureC *10.0-4.5;\r
 320                         hhum=(1.0546-0.000216*temperatureC)*(humidityRH);\r
 321                         am2302_hum=0.318*hhum +76.0;\r
 322                         am2302_temp=temperatureC*25.6;\r
 323                         //PORTB&=~(1<<PINB1);\r
 324                         mr=0;\r
 325 //Kritische Sektion !___Ein Breakpoint in dieser Section kann den TGS8100 zerstoeren!___________________________\r
 326                         PORTB&=~(1<<PINB1);\r
 327                         _delay_us(150);\r
 328                         mr+=MAX1164x_read();\r
 329                         _delay_us(150);\r
 330                         mr+=MAX1164x_read();\r
 331                         \r
 332                         PORTB|=(1<<PINB1);\r
 333 //ENDE Kritische Sektion !______________________________\r
 334                         //l=mr/2.0*2.048/4096; \r
 335                         // l maximal 2  mr max 4096  //mr 2V=8000 \r
 336                         \r
 337                         if (pack2.cmode) { //cmode=0 V 0..2 V cmode=1 V 1.5..3.5V\r
 338                                 //l+=1.5; //Spannung real\r
 339                                 mr+=6000;\r
 340                         } \r
 341                         //if (l>1.8) {\r
 342                         if (mr>7200) {                          \r
 343                                 if (pack2.cmode==0) {\r
 344                                         MAX1164x_config(MAX1164x_S_SEL2|MAX1164x_S_SEL0,CH0_CH1);\r
 345                                         pack2.cmode=1;\r
 346                                 }\r
 347                         }\r
 348                         //if (l<1.6) {\r
 349                         if (mr<6400) {  \r
 350                                 if (pack2.cmode==1) {\r
 351                                         MAX1164x_config(MAX1164x_S_SEL2|MAX1164x_S_SEL0,CH0_M);\r
 352                                         pack2.cmode=0;\r
 353                                 }\r
 354                                 \r
 355                                 \r
 356                         }\r
 357                         //hr=l*10000.0;\r
 358                         pack2.VS=mr*5/2;\r
 359                         l=mr/4000.0;\r
 360                         l=( 3/l- 1) *30;\r
 361                         pack2.current=l*100;\r
 362                         \r
 363                         l=l/ip;\r
 364                         \r
 365                         if (startup==0){\r
 366                                 if (l>R0) {\r
 367                                         R0=l;\r
 368                                         pack2.R0=R0*100;\r
 369                                         writeEEPROM(EEPROM_R0,pack2.R0);\r
 370 \r
 371                                 }\r
 372                                 if (l*100>pack2.r_day_max) {\r
 373                                         pack2.r_day_max=l*100;\r
 374                                 }\r
 375                         }\r
 376                          l=l/R0;\r
 377                         l=log(1/l);\r
 378                         l=l*160*4; //fuer DS18B20\r
 379                 //      if (l>500) {\r
 380                 //              l=100;\r
 381                 //      }\r
 382                         wdcounter=0;\r
 383                         \r
 384                 }\r
 385         \r
 386                 if (gcontrol==1) {\r
 387                         uint16_t w=l;\r
 388                         uint8_t t8=w>>4;\r
 389                         uint8_t af=0;\r
 390                         if (t8>pack1.TH) af=1;\r
 391                         if (t8<=pack1.TL) af=1; \r
 392                         cli();\r
 393                         pack1.temp=w;\r
 394                         //pack.temp++;\r
 395                         alarmflag=af;\r
 396                         sei();                  \r
 397                         EXTERN_SLEEP();         \r
 398                 }\r
 399                 if ((gcontrol==2)||(gcontrol==3)) {\r
 400                         gcontrol=0;\r
 401                         \r
 402                 }\r
 403 \r
 404                 \r
 405 #if  defined(__AVR_ATtiny25__)||defined(__AVR_ATtiny45__)  || defined(__AVR_ATtiny85__)\r
 406                         if (((TIMSK & (1<<TOIE0))==0)&& (mode==0))\r
 407 #endif                  \r
 408 #if  defined(__AVR_ATtiny24__)||defined(__AVR_ATtiny44__)  || defined(__AVR_ATtiny84__) ||defined(__AVR_ATtiny24A__)||defined(__AVR_ATtiny44A__)  || defined(__AVR_ATtiny84A__)\r
 409                         if (((TIMSK0 & (1<<TOIE0))==0)&& (mode==0))\r
 410 #endif\r
 411                           {\r
 412 \r
 413                         MCUCR|=(1<<SE)|(1<<SM1);\r
 414                         MCUCR&=~(1<<ISC01);\r
 415                 } else {\r
 416                         MCUCR|=(1<<SE);\r
 417                         MCUCR&=~(1<<SM1);\r
 418                 }\r
 419                 asm("SLEEP");\r
 420    }\r
 421 \r
 422 \r
 423 }\r