DS2450_SHT2X_BMP280/DS2450_SHT2X_BMP280.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/SHT2x.h"\r
  43 #include "../common/I2C/BMP280.h"\r
  44 extern void OWINIT();\r
  45 extern void EXTERN_SLEEP();\r
  46 \r
  47 uint8_t owid[8]={0x20, 0xA2, 0xD9, 0x84, 0x00, 0x16, 0x02, 0x5D};/**/\r
  48 uint8_t config_info[16]={0x01,14,0x04,0x08,  0x06,0x09, 0x02,16,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00};\r
  49 \r
  50 #if (owid>128) \r
  51 #error "Variable not correct"\r
  52 #endif\r
  53 \r
  54 extern uint8_t mode;\r
  55 extern uint8_t gcontrol;\r
  56 extern uint8_t reset_indicator;\r
  57 extern uint8_t alarmflag;\r
  58 volatile uint8_t wdcounter=10;\r
  59 \r
  60 \r
  61 #if  defined(__AVR_ATtiny24__)||defined(__AVR_ATtiny44__)  || defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny24A__)||defined(__AVR_ATtiny44A__)  || defined(__AVR_ATtiny84A__)\r
  62 ISR(WATCHDOG_vect) {\r
  63 #else\r
  64 ISR(WDT_vect) {\r
  65 #endif \r
  66         wdcounter++;\r
  67         if (reset_indicator==1) reset_indicator++;\r
  68         else if (reset_indicator==2) mode=0;\r
  69 }\r
  70 \r
  71 typedef union {\r
  72         volatile uint8_t bytes[0x20];\r
  73         struct {\r
  74                 //Page0\r
  75                 uint16_t A;  //0\r
  76                 uint16_t B;  //2\r
  77                 uint16_t C;  //4\r
  78                 uint16_t D;  //6\r
  79                 //Page1\r
  80                 uint8_t CSA1;\r
  81                 uint8_t CSA2;\r
  82                 uint8_t CSB1;\r
  83                 uint8_t CSB2;\r
  84                 uint8_t CSC1;\r
  85                 uint8_t CSC2;\r
  86                 uint8_t CSD1;\r
  87                 uint8_t CSD2;\r
  88                 //Page2\r
  89                 uint8_t LA;\r
  90                 uint8_t HA;\r
  91                 uint8_t LB;\r
  92                 uint8_t HB;\r
  93                 uint8_t LC;\r
  94                 uint8_t HC;\r
  95                 uint8_t LD;\r
  96                 uint8_t HD;\r
  97                 //Page3\r
  98                 uint8_t FC1;\r
  99                 uint8_t FC2;\r
 100                 uint8_t FC3;\r
 101                 uint8_t FC4;\r
 102                 uint8_t VCCP;\r
 103                 uint8_t FC5;\r
 104                 uint8_t FC6;\r
 105                 uint8_t FC7;\r
 106                 uint8_t convc1;\r
 107                 uint8_t convc2;\r
 108                 \r
 109                 \r
 110         };\r
 111 } pack_t;\r
 112 volatile pack_t pack;\r
 113 \r
 114 \r
 115 \r
 116 volatile int16_t am2302_temp;\r
 117 volatile uint16_t am2302_hum;\r
 118 \r
 119 \r
 120 uint8_t userRegister[1];\r
 121 int16_t sRH,sT;\r
 122 volatile double temperatureC,humidityRH;\r
 123 uint32_t P;\r
 124 int32_t t;\r
 125 \r
 126 \r
 127 \r
 128 \r
 129 int main(void){\r
 130         pack.A=0;\r
 131         pack.B=0;\r
 132         pack.C=0;\r
 133         pack.D=0;\r
 134         pack.CSA1=0x08;\r
 135         pack.CSA2=0x8C;\r
 136         pack.CSB1=0x08;\r
 137         pack.CSB2=0x8C;\r
 138         pack.CSC1=0x08;\r
 139         pack.CSC2=0x8C;\r
 140         pack.CSD1=0x08;\r
 141         pack.CSD2=0x8C;\r
 142         pack.HA=0xFF;\r
 143         pack.LA=0x00;\r
 144         pack.HB=0xFF;\r
 145         pack.LB=0x00;\r
 146         pack.HC=0xFF;\r
 147         pack.LC=0x00;\r
 148         pack.HD=0xFF;\r
 149         pack.LD=0x00;\r
 150         pack.VCCP=0;\r
 151     PORTB=0xFF-(1<<PORTB0); //Schalter kann gegen Masse sein und zieht dann immer Strom\r
 152         DDRB|=(1<<PORTB0); //Als Ausgang und 0\r
 153         PORTA=0xFF;  //All Pull up;\r
 154          PRR|=(1<<PRADC);  // adc for save Power\r
 155 \r
 156         ACSR|=(1<<ACD);  //Disable Comparator\r
 157         OWINIT();\r
 158 \r
 159         MCUCR &=~(1<<PUD); //All Pins Pullup...\r
 160         MCUCR |=(1<<BODS);\r
 161         WDTCSR |= ((1<<WDCE) );   // Enable the WD Change Bit//| (1<<WDE)\r
 162         WDTCSR |=   (1<<WDIE) |              // Enable WDT Interrupt\r
 163         (1<<WDP3) | (1<<WDP0);   // Set Timeout to ~8 seconds\r
 164         \r
 165         gcontrol=1;\r
 166         \r
 167         USI_TWI_Master_Initialise();\r
 168         bmp280Init();\r
 169         SHT2x_SoftReset();\r
 170         SHT2x_ReadUserRegister(userRegister);\r
 171         //(userRegister & ~SHT2x_RES_MASK) | SHT2x_RES_10_13BIT;\r
 172         SHT2x_WriteUserRegister(userRegister); //write changed user reg\r
 173         // --- measure humidity with "Hold Master Mode (HM)" ---\r
 174         //SHT2x_MeasurePoll(HUMIDITY, &sRH);\r
 175         // --- measure temperature with "Polling Mode" (no hold master) ---\r
 176         //SHT2x_MeasurePoll(TEMP, &sT);\r
 177         //-- calculate humidity and temperature --\r
 178         //temperatureC = SHT2x_CalcTemperatureC(sT);\r
 179         //humidityRH = SHT2x_CalcRH(sRH);\r
 180         \r
 181         sei();\r
 182         \r
 183         //DDRB|=(1<<PINB1);\r
 184 \r
 185     while(1)   {\r
 186         \r
 187         if (wdcounter>3) {      \r
 188                 SHT2x_MeasurePoll(HUMIDITY, &sRH);\r
 189                 // --- measure temperature with "Polling Mode" (no hold master) ---\r
 190                 SHT2x_MeasurePoll(TEMP, &sT);\r
 191                 //-- calculate humidity and temperature --\r
 192                 temperatureC = SHT2x_CalcTemperatureC(sT);\r
 193                 humidityRH = SHT2x_CalcRH(sRH);\r
 194                 bmp280ConvertInt(&t,&P,1);\r
 195                 wdcounter=0;\r
 196         }\r
 197         \r
 198 \r
 199                 \r
 200                 \r
 201 \r
 202 \r
 203                 if (gcontrol) {\r
 204                         //PORTB|=(1<<PINB1);\r
 205                         uint8_t bb=1;\r
 206                         uint8_t bb1=1;\r
 207                         for(uint8_t i=0;i<4;i++){\r
 208                                 if (pack.convc1&bb1) {\r
 209                                         if (pack.convc2&(bb)) {pack.bytes[i*2]=0;pack.bytes[i*2+1]=0;}\r
 210                                         bb=bb<<1;\r
 211                                         if (pack.convc2&(bb)) {pack.bytes[i*2]=0xFF;pack.bytes[i*2+1]=0xFF;}\r
 212                                         bb=bb<<1;\r
 213                                 } else bb=bb<<2;\r
 214                                 bb1=bb1<<1;                             \r
 215                         }\r
 216                         //CHanel A\r
 217                         if (pack.convc1&1) {\r
 218                                 /*if (pack.CSA2&0x01)   ADMUX=0; else ADMUX=0x80;\r
 219                                 _delay_us(100);\r
 220                                 ADCSRA|=(1<<ADSC);\r
 221                                 while ((ADCSRA&(1<<ADSC)));\r
 222                                 cli();pack.A=ADC;sei();*/\r
 223                                 uint16_t ct=(temperatureC*100.0)+32767;\r
 224                                 cli();pack.A=ct;sei();\r
 225                                 wdcounter=10;\r
 226                                 alarmflag=0;\r
 227                                 \r
 228                                 if (pack.CSA2&0x08)  //AEH\r
 229                                         if (pack.bytes[1]>pack.HA) {alarmflag=1;pack.CSA2|=0x20;}\r
 230                                 if (pack.CSA2&0x04)  //AEL\r
 231                                         if (pack.bytes[1]<pack.LA) {alarmflag=1;pack.CSA2|=0x10;}\r
 232                         }\r
 233 \r
 234                         if (pack.convc1&2) {\r
 235                                 /*if (pack.CSB2&0x01)   ADMUX=1; else ADMUX=0x81;\r
 236                                 _delay_us(100);\r
 237                                 ADCSRA|=(1<<ADSC);\r
 238                                 while ((ADCSRA&(1<<ADSC)));\r
 239                                 cli();pack.B=ADC;sei();*/\r
 240                                 wdcounter=10;\r
 241                                 cli();pack.B=humidityRH*100;sei();\r
 242                                 if (pack.CSB2&0x08)  //AEH\r
 243                                         if (pack.bytes[1]>pack.HB) {alarmflag=1;pack.CSB2|=0x20;}\r
 244                                 if (pack.CSB2&0x04)  //AEL\r
 245                                         if (pack.bytes[1]<pack.LB) {alarmflag=1;pack.CSB2|=0x10;}\r
 246                         }\r
 247 \r
 248                         if (pack.convc1&4) {\r
 249                                 /*if (pack.CSC2&0x01)   ADMUX=2; else ADMUX=0x82;\r
 250                                 _delay_us(100);\r
 251                                 ADCSRA|=(1<<ADSC);\r
 252                                 while ((ADCSRA&(1<<ADSC)));\r
 253                                 cli();pack.C=ADC;sei();*/\r
 254                                 wdcounter=10;\r
 255                                 cli();pack.C=0;sei();\r
 256                                 if (pack.CSC2&0x08)  //AEH\r
 257                                         if (pack.bytes[1]>pack.HC) {alarmflag=1;pack.CSC2|=0x20;}\r
 258                                 if (pack.CSC2&0x04)  //AEL\r
 259                                         if (pack.bytes[1]<pack.LC) {alarmflag=1;pack.CSC2|=0x10;}\r
 260                         } \r
 261                         if (pack.convc1&8) {\r
 262                                 /*if (pack.CSD2&0x01)   ADMUX=3; else ADMUX=0x83;\r
 263                                 _delay_us(100);\r
 264                                 ADCSRA|=(1<<ADSC);\r
 265                                 while ((ADCSRA&(1<<ADSC)));\r
 266                                 cli();pack.D=ADC;sei();*/\r
 267                                 wdcounter=10;\r
 268                                 cli();pack.D=P/100.0*32.0;sei();\r
 269                                 if (pack.CSD2&0x08)  //AEH\r
 270                                         if (pack.bytes[1]>pack.HD) {alarmflag=1;pack.CSD2|=0x20;}\r
 271                                 if (pack.CSD2&0x04)  //AEL\r
 272                                         if (pack.bytes[1]<pack.LD) {alarmflag=1;pack.CSD2|=0x10;}\r
 273                         }\r
 274                         \r
 275                         EXTERN_SLEEP();\r
 276                         //PORTB&=~(1<<PINB1);\r
 277                 }\r
 278 \r
 279                 /*uint8_t bb=1;\r
 280                 for(uint8_t i=0;i<4;i++) {\r
 281                         if (pack.bytes[8+i*2]&0x80) {  //Chanel as output\r
 282                                 if (pack.bytes[8+i*2]&0x40) {\r
 283                                         DDRA|=bb;\r
 284                                 } else {\r
 285                                         DDRA&=~bb;\r
 286                                 }\r
 287                         } else {\r
 288                                 DDRA&=~bb;\r
 289                         }\r
 290                         bb=bb*2;\r
 291                 }*/\r
 292                 \r
 293 #if  defined(__AVR_ATtiny25__)||defined(__AVR_ATtiny45__)  || defined(__AVR_ATtiny85__)\r
 294                         if (((TIMSK & (1<<TOIE0))==0)&& (mode==0))\r
 295 #endif                  \r
 296 #if  defined(__AVR_ATtiny24__)||defined(__AVR_ATtiny44__)  || defined(__AVR_ATtiny84__) ||defined(__AVR_ATtiny24A__)||defined(__AVR_ATtiny44A__)  || defined(__AVR_ATtiny84A__)\r
 297                         if (((TIMSK0 & (1<<TOIE0))==0)&& (mode==0))\r
 298 #endif\r
 299                           {\r
 300 \r
 301                         MCUCR|=(1<<SE)|(1<<SM1);\r
 302                         MCUCR&=~(1<<ISC01);\r
 303                 } else {\r
 304                         MCUCR|=(1<<SE);\r
 305                         MCUCR&=~(1<<SM1);\r
 306                 }\r
 307         //      asm("SLEEP");\r
 308    }\r
 309 \r
 310 \r
 311 }