DS2438_SHT2X/DS2438_SHT2X.c

   1 // Copyright (c) 2017, Tobias Mueller tm(at)tm3d.de\r
   2 // All rights reserved.\r
   3 //\r
   4 // Redistribution and use in source and binary forms, with or without\r
   5 // modification, are permitted provided that the following conditions are\r
   6 // met:\r
   7 //\r
   8 //  * Redistributions of source code must retain the above copyright\r
   9 //    notice, this list of conditions and the following disclaimer.\r
  10 //  * Redistributions in binary form must reproduce the above copyright\r
  11 //    notice, this list of conditions and the following disclaimer in the\r
  12 //    documentation and/or other materials provided with the\r
  13 //    distribution.\r
  14 //  * All advertising materials mentioning features or use of this\r
  15 //    software must display the following acknowledgement: This product\r
  16 //    includes software developed by tm3d.de and its contributors.\r
  17 //  * Neither the name of tm3d.de nor the names of its contributors may\r
  18 //    be used to endorse or promote products derived from this software\r
  19 //    without specific prior written permission.\r
  20 //\r
  21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\r
  22 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\r
  23 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\r
  24 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\r
  25 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\r
  26 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\r
  27 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\r
  28 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\r
  29 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\r
  30 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\r
  31 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
  32 \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/SHT2xV2.h"\r
  43 #include "../common/calibr.h"\r
  44 \r
  45 extern void OWINIT();\r
  46 extern void EXTERN_SLEEP();\r
  47 \r
  48 uint8_t owid[8]={0x26, 0xA2, 0xD9, 0x84, 0x00, 0x00, 0x05, 0x16};/**/\r
  49 uint8_t config_info[26]={0x01,0x06, 0x05,0x08, 0x04,0x07, 0x00,0x00, 0x02,0x07,0x00,0x07,0x00,0x00,0x00,0x00, 0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};\r
  50         \r
  51 \r
  52 extern uint8_t mode;\r
  53 extern uint8_t gcontrol;\r
  54 extern uint8_t reset_indicator;\r
  55 extern uint8_t alarmflag;\r
  56 \r
  57 volatile uint8_t wdcounter=5;\r
  58 \r
  59 \r
  60 typedef union {\r
  61 \r
  62         volatile uint8_t bytes[64];\r
  63         struct {\r
  64                 uint8_t status;  //1\r
  65                 int16_t temp;  //2\r
  66                 uint16_t voltage;  //4\r
  67                 uint16_t current;  //6\r
  68                 uint8_t threshold; //8\r
  69                 \r
  70                 uint8_t page1[8]; //9\r
  71                 uint8_t page2[8]; //17\r
  72                 uint8_t page3[8]; //25\r
  73                 uint8_t page4[8];  //33\r
  74                 uint8_t page5[8];  //41\r
  75                 uint8_t page6[8];  //49\r
  76                 uint8_t page7[8];  //57\r
  77                 //uint8_t crc;  //65\r
  78         };\r
  79 } pack_t;\r
  80 volatile pack_t pack;\r
  81 \r
  82 \r
  83 \r
  84 volatile int16_t am2302_temp;\r
  85 volatile uint16_t am2302_hum;\r
  86 \r
  87 uint8_t userRegister[1];\r
  88 double temperatureC,humidityRH;\r
  89 volatile double l;\r
  90 \r
  91 #if  defined(__AVR_ATtiny24__)||defined(__AVR_ATtiny44__)  || defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny24A__)||defined(__AVR_ATtiny44A__)  || defined(__AVR_ATtiny84A__)\r
  92 ISR(WATCHDOG_vect) {\r
  93 #else\r
  94 ISR(WDT_vect) {\r
  95 #endif \r
  96         wdcounter++;\r
  97         if (reset_indicator==1) reset_indicator++;\r
  98         else if (reset_indicator==2) mode=0;\r
  99 \r
 100 \r
 101 }\r
 102 \r
 103 int testSW(void) {\r
 104         uint8_t r;\r
 105         DDRB&=~(1<<PORTB0);  //Eingang\r
 106          __asm__ __volatile__ ("nop"); \r
 107          PORTB|=(1<<PORTB0); //Pullup\r
 108          __asm__ __volatile__ ("nop"); \r
 109          __asm__ __volatile__ ("nop"); \r
 110          __asm__ __volatile__ ("nop"); \r
 111          __asm__ __volatile__ ("nop"); \r
 112          __asm__ __volatile__ ("nop"); \r
 113          r=PINB&(1<<PORTB0);\r
 114          __asm__ __volatile__ ("nop"); \r
 115          PORTB&=~(1<<PORTB0); \r
 116          __asm__ __volatile__ ("nop"); \r
 117         DDRB|=(1<<PORTB0);  //Eingang\r
 118         return (r==0);\r
 119          \r
 120          \r
 121 }\r
 122 \r
 123 int main(void){\r
 124      PRR|=(1<<PRADC);  // adc for save Power\r
 125         PORTA=0xFF;\r
 126         PORTB=0xFF-(1<<PORTB0); //Schalter kann gegen Masse sein und zieht dann immer Strom\r
 127         DDRB|=(1<<PORTB0); //Als Ausgang und 0\r
 128         \r
 129         \r
 130         OWINIT();\r
 131 \r
 132         ACSR|=(1<<ACD);  //Disable Comparator\r
 133         ADCSRB|=(1<<ACME); //Disable Analog multiplexer\r
 134         MCUCR &=~(1<<PUD); //All Pins Pullup...\r
 135         MCUCR |=(1<<BODS);\r
 136 \r
 137         \r
 138         WDTCSR |= ((1<<WDCE) );   // Enable the WD Change Bit//| (1<<WDE)\r
 139         WDTCSR |=   (1<<WDIE) |              // Enable WDT Interrupt\r
 140         (1<<WDP3) | (1<<WDP0);   // Set Timeout to ~8 seconds\r
 141          if (testSW()) {\r
 142                 config_info[5]=8;\r
 143         }else{\r
 144                 config_info[5]=7;\r
 145          }\r
 146         \r
 147     uint8_t i;\r
 148     for(i=0;i<64;i++) pack.bytes[i]=0;\r
 149         pack.page3[0]=0xF1;\r
 150         MCUSR=0;\r
 151         USI_TWI_Master_Initialise();\r
 152         initSHT2x();\r
 153         _delay_ms(100);\r
 154         sei();\r
 155         \r
 156          while(1)   { \r
 157                  if (gcontrol) {\r
 158                          wdcounter=3;\r
 159                          gcontrol=0;\r
 160                  }\r
 161                  if (wdcounter>2) {\r
 162                          getSHT2xHumTemp(&temperatureC,&humidityRH);\r
 163                          double RH = humidityRH*10.0;//calibr_hum(temperatureC,-0.2,humidityRH)*10.0;\r
 164                          double T=temperatureC;//-0.2;\r
 165                          T*=10.0;\r
 166                          if (testSW()) {\r
 167                                  am2302_hum= RH;\r
 168                                  am2302_temp=T*25.6;\r
 169                                  config_info[5]=12;     \r
 170                                  \r
 171                          }else{\r
 172                                  \r
 173                                 double hhum=(1.0546-0.000216*T)*(RH);\r
 174                                 //am2302_hum=0.318*hhum +76.0;\r
 175                                 am2302_hum=0.31*hhum +80;\r
 176                                 am2302_temp=T*25.6;\r
 177                                 //am2302_temp=am2302_temp-45;\r
 178                                 config_info[5]=7;\r
 179                          }\r
 180                          //PORTB&=~(1<<PINB1);\r
 181                          wdcounter=0;\r
 182                  }\r
 183 \r
 184                 if (((TIMSK0 & (1<<TOIE0))==0)&& (mode==0))       {\r
 185                         MCUCR|=(1<<SE)|(1<<SM1);\r
 186                         MCUCR&=~(1<<ISC01);\r
 187                 } else {\r
 188                         MCUCR|=(1<<SE);\r
 189                         MCUCR&=~(1<<SM1);\r
 190                 }\r
 191                 asm("SLEEP");\r
 192         }\r
 193 \r
 194 \r
 195 }