DS18B20_BMP280/DS18B20_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
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  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/BMP280.h"
  43
  44
  45 extern void OWINIT();
  46
  47
  48
  49
  50 uint8_t owid[8]={0x28, 0xA2, 0xD9, 0x84, 0x00, 0x16, 0x77, 0x6B};/**/
  51 uint8_t config_info[16]={0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x10,0x11,0x12,0x13,0x14,0x15,0x16};
  52
  53 #if (owid>128)
  54 #error "Variable not correct"
  55 #endif
  56
  57 extern uint8_t mode;
  58 extern uint8_t gcontrol;
  59 extern uint8_t reset_indicator;
  60 extern uint8_t alarmflag;
  61
  62
  63
  64
  65 typedef union {
  66         volatile uint8_t bytes[8];
  67         struct {
  68                 uint16_t temp;  //0
  69                 uint8_t TH;  //2
  70                 uint8_t TL;  //3
  71                 uint8_t config;  //4
  72                 uint8_t rrFF; //5
  73                 uint8_t rr00; //6
  74                 uint8_t rr10; //7
  75         };
  76 } pack_t;
  77 volatile pack_t pack;
  78
  79
  80
  81
  82
  83
  84
  85
  86 int main(void){
  87     PRR|=(1<<PRADC);  // adc for save Power
  88         pack.temp=0x0550;
  89         pack.config=0x7F;
  90         pack.TH=75;
  91         pack.TL=70;
  92         pack.rrFF=0xFF;
  93         pack.rr00=0;
  94         pack.rr10=0x10;
  95         PORTA=0xFF;
  96         PORTB=0xFF;
  97         OWINIT();
  98
  99         MCUCR &=~(1<<PUD); //All Pins Pullup...
 100         MCUCR |=(1<<BODS);
 101
 102         MCUSR=0;
 103         USI_TWI_Master_Initialise();
 104         bmp280Init();
 105
 106         gcontrol=1;
 107         sei();
 108     while(1)   {
 109
 110                 if (gcontrol) {
 111                         uint32_t P;
 112                         int32_t t;
 113                         bmp280ConvertInt(&t,&P,1);
 114                         P=P*16;
 115                         P=P/1000;
 116                         uint16_t w=P;
 117                         uint8_t t8=w>>4;
 118                         uint8_t af=0;
 119                         if (t8>pack.TH) af=1;
 120                         if (t8<=pack.TL) af=1;
 121                         cli();
 122                         pack.temp=w;
 123                         //pack.temp++;
 124                         alarmflag=af;
 125                         sei();
 126                         gcontrol=0;
 127                 }
 128
 129
 130 #if  defined(__AVR_ATtiny25__)||defined(__AVR_ATtiny45__)  || defined(__AVR_ATtiny85__)
 131                         if (((TIMSK & (1<<TOIE0))==0)&& (mode==0))
 132 #endif
 133 #if  defined(__AVR_ATtiny24__)||defined(__AVR_ATtiny44__)  || defined(__AVR_ATtiny84__) ||defined(__AVR_ATtiny24A__)||defined(__AVR_ATtiny44A__)  || defined(__AVR_ATtiny84A__)
 134                         if (((TIMSK0 & (1<<TOIE0))==0)&& (mode==0))
 135 #endif
 136                           {
 137
 138                         MCUCR|=(1<<SE)|(1<<SM1);
 139                         MCUCR&=~(1<<ISC01);
 140                 } else {
 141                         MCUCR|=(1<<SE);
 142                         MCUCR&=~(1<<SM1);
 143                 }
 144                 //MCUCR&=~(1<<ISC01);
 145                 asm("SLEEP");
 146    }
 147
 148
 149 }