DS2450_SHT2X_BMP280/DS2450_SHT2X_BMP280.c

   1
   2 // Copyright (c) 2015, Tobias Mueller tm(at)tm3d.de
   3 // All rights reserved.
   4 //
   5 // Redistribution and use in source and binary forms, with or without
   6 // modification, are permitted provided that the following conditions are
   7 // met:
   8 //
   9 //  * Redistributions of source code must retain the above copyright
  10 //    notice, this list of conditions and the following disclaimer.
  11 //  * Redistributions in binary form must reproduce the above copyright
  12 //    notice, this list of conditions and the following disclaimer in the
  13 //    documentation and/or other materials provided with the
  14 //    distribution.
  15 //  * All advertising materials mentioning features or use of this
  16 //    software must display the following acknowledgement: This product
  17 //    includes software developed by tm3d.de and its contributors.
  18 //  * Neither the name of tm3d.de nor the names of its contributors may
  19 //    be used to endorse or promote products derived from this software
  20 //    without specific prior written permission.
  21 //
  22 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  26 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  27 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  28 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  32 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33
  34 #define F_CPU 8000000UL
  35 #include <avr/io.h>
  36 #include <avr/interrupt.h>
  37 #include <util/delay.h>
  38 #include <avr/wdt.h>
  39 #include <avr/sleep.h>
  40 #include <avr/pgmspace.h>
  41 #include "../common/I2C/USI_TWI_Master.h"
  42 #include "../common/I2C/SHT2x.h"
  43 #include "../common/I2C/BMP280.h"
  44 extern void OWINIT();
  45 extern void EXTERN_SLEEP();
  46
  47 uint8_t owid[8]={0x20, 0xA2, 0xD9, 0x84, 0x00, 0x16, 0x02, 0x5D};/**/
  48 uint8_t config_info[16]={0x01,14,0x04,0x08,  0x06,0x09, 0x02,16,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
  49
  50 #if (owid>128)
  51 #error "Variable not correct"
  52 #endif
  53
  54 extern uint8_t mode;
  55 extern uint8_t gcontrol;
  56 extern uint8_t reset_indicator;
  57 extern uint8_t alarmflag;
  58 volatile uint8_t wdcounter=10;
  59
  60
  61 #if  defined(__AVR_ATtiny24__)||defined(__AVR_ATtiny44__)  || defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny24A__)||defined(__AVR_ATtiny44A__)  || defined(__AVR_ATtiny84A__)
  62 ISR(WATCHDOG_vect) {
  63 #else
  64 ISR(WDT_vect) {
  65 #endif
  66         wdcounter++;
  67         if (reset_indicator==1) reset_indicator++;
  68         else if (reset_indicator==2) mode=0;
  69 }
  70
  71 typedef union {
  72         volatile uint8_t bytes[0x20];
  73         struct {
  74                 //Page0
  75                 uint16_t A;  //0
  76                 uint16_t B;  //2
  77                 uint16_t C;  //4
  78                 uint16_t D;  //6
  79                 //Page1
  80                 uint8_t CSA1;
  81                 uint8_t CSA2;
  82                 uint8_t CSB1;
  83                 uint8_t CSB2;
  84                 uint8_t CSC1;
  85                 uint8_t CSC2;
  86                 uint8_t CSD1;
  87                 uint8_t CSD2;
  88                 //Page2
  89                 uint8_t LA;
  90                 uint8_t HA;
  91                 uint8_t LB;
  92                 uint8_t HB;
  93                 uint8_t LC;
  94                 uint8_t HC;
  95                 uint8_t LD;
  96                 uint8_t HD;
  97                 //Page3
  98                 uint8_t FC1;
  99                 uint8_t FC2;
 100                 uint8_t FC3;
 101                 uint8_t FC4;
 102                 uint8_t VCCP;
 103                 uint8_t FC5;
 104                 uint8_t FC6;
 105                 uint8_t FC7;
 106                 uint8_t convc1;
 107                 uint8_t convc2;
 108
 109
 110         };
 111 } pack_t;
 112 volatile pack_t pack;
 113
 114
 115
 116 volatile int16_t am2302_temp;
 117 volatile uint16_t am2302_hum;
 118
 119
 120 uint8_t userRegister[1];
 121 int16_t sRH,sT;
 122 volatile double temperatureC,humidityRH;
 123 uint32_t P;
 124 int32_t t;
 125
 126
 127
 128
 129 int main(void){
 130         pack.A=0;
 131         pack.B=0;
 132         pack.C=0;
 133         pack.D=0;
 134         pack.CSA1=0x08;
 135         pack.CSA2=0x8C;
 136         pack.CSB1=0x08;
 137         pack.CSB2=0x8C;
 138         pack.CSC1=0x08;
 139         pack.CSC2=0x8C;
 140         pack.CSD1=0x08;
 141         pack.CSD2=0x8C;
 142         pack.HA=0xFF;
 143         pack.LA=0x00;
 144         pack.HB=0xFF;
 145         pack.LB=0x00;
 146         pack.HC=0xFF;
 147         pack.LC=0x00;
 148         pack.HD=0xFF;
 149         pack.LD=0x00;
 150         pack.VCCP=0;
 151     PORTB=0xFF-(1<<PORTB0); //Schalter kann gegen Masse sein und zieht dann immer Strom
 152         DDRB|=(1<<PORTB0); //Als Ausgang und 0
 153         PORTA=0xFF;  //All Pull up;
 154          PRR|=(1<<PRADC);  // adc for save Power
 155
 156         ACSR|=(1<<ACD);  //Disable Comparator
 157         OWINIT();
 158
 159         MCUCR &=~(1<<PUD); //All Pins Pullup...
 160         MCUCR |=(1<<BODS);
 161         WDTCSR |= ((1<<WDCE) );   // Enable the WD Change Bit//| (1<<WDE)
 162         WDTCSR |=   (1<<WDIE) |              // Enable WDT Interrupt
 163         (1<<WDP3) | (1<<WDP0);   // Set Timeout to ~8 seconds
 164
 165         gcontrol=1;
 166
 167         USI_TWI_Master_Initialise();
 168         bmp280Init();
 169         SHT2x_SoftReset();
 170         SHT2x_ReadUserRegister(userRegister);
 171         //(userRegister & ~SHT2x_RES_MASK) | SHT2x_RES_10_13BIT;
 172         SHT2x_WriteUserRegister(userRegister); //write changed user reg
 173         // --- measure humidity with "Hold Master Mode (HM)" ---
 174         //SHT2x_MeasurePoll(HUMIDITY, &sRH);
 175         // --- measure temperature with "Polling Mode" (no hold master) ---
 176         //SHT2x_MeasurePoll(TEMP, &sT);
 177         //-- calculate humidity and temperature --
 178         //temperatureC = SHT2x_CalcTemperatureC(sT);
 179         //humidityRH = SHT2x_CalcRH(sRH);
 180
 181         sei();
 182
 183         //DDRB|=(1<<PINB1);
 184
 185     while(1)   {
 186
 187         if (wdcounter>3) {
 188                 SHT2x_MeasurePoll(HUMIDITY, &sRH);
 189                 // --- measure temperature with "Polling Mode" (no hold master) ---
 190                 SHT2x_MeasurePoll(TEMP, &sT);
 191                 //-- calculate humidity and temperature --
 192                 temperatureC = SHT2x_CalcTemperatureC(sT);
 193                 humidityRH = SHT2x_CalcRH(sRH);
 194                 bmp280ConvertInt(&t,&P,1);
 195                 wdcounter=0;
 196         }
 197
 198
 199
 200
 201
 202
 203                 if (gcontrol) {
 204                         //PORTB|=(1<<PINB1);
 205                         uint8_t bb=1;
 206                         uint8_t bb1=1;
 207                         for(uint8_t i=0;i<4;i++){
 208                                 if (pack.convc1&bb1) {
 209                                         if (pack.convc2&(bb)) {pack.bytes[i*2]=0;pack.bytes[i*2+1]=0;}
 210                                         bb=bb<<1;
 211                                         if (pack.convc2&(bb)) {pack.bytes[i*2]=0xFF;pack.bytes[i*2+1]=0xFF;}
 212                                         bb=bb<<1;
 213                                 } else bb=bb<<2;
 214                                 bb1=bb1<<1;
 215                         }
 216                         //CHanel A
 217                         if (pack.convc1&1) {
 218                                 /*if (pack.CSA2&0x01)   ADMUX=0; else ADMUX=0x80;
 219                                 _delay_us(100);
 220                                 ADCSRA|=(1<<ADSC);
 221                                 while ((ADCSRA&(1<<ADSC)));
 222                                 cli();pack.A=ADC;sei();*/
 223                                 uint16_t ct=(temperatureC*100.0)+32767;
 224                                 cli();pack.A=ct;sei();
 225                                 wdcounter=10;
 226                                 alarmflag=0;
 227
 228                                 if (pack.CSA2&0x08)  //AEH
 229                                         if (pack.bytes[1]>pack.HA) {alarmflag=1;pack.CSA2|=0x20;}
 230                                 if (pack.CSA2&0x04)  //AEL
 231                                         if (pack.bytes[1]<pack.LA) {alarmflag=1;pack.CSA2|=0x10;}
 232                         }
 233
 234                         if (pack.convc1&2) {
 235                                 /*if (pack.CSB2&0x01)   ADMUX=1; else ADMUX=0x81;
 236                                 _delay_us(100);
 237                                 ADCSRA|=(1<<ADSC);
 238                                 while ((ADCSRA&(1<<ADSC)));
 239                                 cli();pack.B=ADC;sei();*/
 240                                 wdcounter=10;
 241                                 cli();pack.B=humidityRH*100;sei();
 242                                 if (pack.CSB2&0x08)  //AEH
 243                                         if (pack.bytes[1]>pack.HB) {alarmflag=1;pack.CSB2|=0x20;}
 244                                 if (pack.CSB2&0x04)  //AEL
 245                                         if (pack.bytes[1]<pack.LB) {alarmflag=1;pack.CSB2|=0x10;}
 246                         }
 247
 248                         if (pack.convc1&4) {
 249                                 /*if (pack.CSC2&0x01)   ADMUX=2; else ADMUX=0x82;
 250                                 _delay_us(100);
 251                                 ADCSRA|=(1<<ADSC);
 252                                 while ((ADCSRA&(1<<ADSC)));
 253                                 cli();pack.C=ADC;sei();*/
 254                                 wdcounter=10;
 255                                 cli();pack.C=0;sei();
 256                                 if (pack.CSC2&0x08)  //AEH
 257                                         if (pack.bytes[1]>pack.HC) {alarmflag=1;pack.CSC2|=0x20;}
 258                                 if (pack.CSC2&0x04)  //AEL
 259                                         if (pack.bytes[1]<pack.LC) {alarmflag=1;pack.CSC2|=0x10;}
 260                         }
 261                         if (pack.convc1&8) {
 262                                 /*if (pack.CSD2&0x01)   ADMUX=3; else ADMUX=0x83;
 263                                 _delay_us(100);
 264                                 ADCSRA|=(1<<ADSC);
 265                                 while ((ADCSRA&(1<<ADSC)));
 266                                 cli();pack.D=ADC;sei();*/
 267                                 wdcounter=10;
 268                                 cli();pack.D=P/100.0*32.0;sei();
 269                                 if (pack.CSD2&0x08)  //AEH
 270                                         if (pack.bytes[1]>pack.HD) {alarmflag=1;pack.CSD2|=0x20;}
 271                                 if (pack.CSD2&0x04)  //AEL
 272                                         if (pack.bytes[1]<pack.LD) {alarmflag=1;pack.CSD2|=0x10;}
 273                         }
 274
 275                         EXTERN_SLEEP();
 276                         //PORTB&=~(1<<PINB1);
 277                 }
 278
 279                 /*uint8_t bb=1;
 280                 for(uint8_t i=0;i<4;i++) {
 281                         if (pack.bytes[8+i*2]&0x80) {  //Chanel as output
 282                                 if (pack.bytes[8+i*2]&0x40) {
 283                                         DDRA|=bb;
 284                                 } else {
 285                                         DDRA&=~bb;
 286                                 }
 287                         } else {
 288                                 DDRA&=~bb;
 289                         }
 290                         bb=bb*2;
 291                 }*/
 292
 293 #if  defined(__AVR_ATtiny25__)||defined(__AVR_ATtiny45__)  || defined(__AVR_ATtiny85__)
 294                         if (((TIMSK & (1<<TOIE0))==0)&& (mode==0))
 295 #endif
 296 #if  defined(__AVR_ATtiny24__)||defined(__AVR_ATtiny44__)  || defined(__AVR_ATtiny84__) ||defined(__AVR_ATtiny24A__)||defined(__AVR_ATtiny44A__)  || defined(__AVR_ATtiny84A__)
 297                         if (((TIMSK0 & (1<<TOIE0))==0)&& (mode==0))
 298 #endif
 299                           {
 300
 301                         MCUCR|=(1<<SE)|(1<<SM1);
 302                         MCUCR&=~(1<<ISC01);
 303                 } else {
 304                         MCUCR|=(1<<SE);
 305                         MCUCR&=~(1<<SM1);
 306                 }
 307         //      asm("SLEEP");
 308    }
 309
 310
 311 }