DS18B20_BMP280/DS18B20_BMP280.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 #define F_CPU 8000000UL\r
  34 #include <avr/io.h>\r
  35 #include <avr/interrupt.h>\r
  36 #include <util/delay.h>\r
  37 #include <avr/wdt.h>\r
  38 #include <avr/sleep.h>\r
  39 #include <avr/pgmspace.h>\r
  40 #include "../common/I2C/USI_TWI_Master.h"\r
  41 #include "../common/I2C/BMP280.h"\r
  42 #include "../common/owSlave_tools.h"\r
  43 \r
  44 \r
  45 #define OWST_EXTERN_VARS\r
  46 \r
  47 \r
  48 \r
  49 \r
  50 uint8_t owid[8]={0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x40};/**/\r
  51 uint8_t config_info[26]={0x02,0x03, 0x00,0x00, 0x00,0x00, 0x00,0x00, 0x02,14,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};\r
  52         \r
  53 #if (owid>128) \r
  54 #error "Variable not correct"\r
  55 #endif\r
  56 \r
  57 \r
  58 \r
  59 \r
  60 \r
  61 \r
  62 typedef union {\r
  63         volatile uint8_t bytes[8];\r
  64         struct {\r
  65                 uint16_t temp;  //0\r
  66                 uint8_t TH;  //2\r
  67                 uint8_t TL;  //3\r
  68                 uint8_t config;  //4\r
  69                 uint8_t rrFF; //5\r
  70                 uint8_t rr00; //6\r
  71                 uint8_t rr10; //7\r
  72         };\r
  73 } pack_t;\r
  74 volatile pack_t pack;\r
  75 \r
  76 \r
  77 \r
  78 \r
  79 \r
  80 \r
  81 \r
  82 \r
  83 int main(void){\r
  84     OWST_INIT_USI_ON\r
  85         \r
  86         pack.temp=0x0550;\r
  87         pack.config=0x7F;\r
  88         pack.TH=75;\r
  89         pack.TL=70;\r
  90         pack.rrFF=0xFF;\r
  91         pack.rr00=0;\r
  92         pack.rr10=0x10;\r
  93         \r
  94         OWINIT();\r
  95 \r
  96         OWST_EN_PULLUP\r
  97         USI_TWI_Master_Initialise();\r
  98         _delay_ms(500);\r
  99         bmp280Init();\r
 100         _delay_ms(50);\r
 101         bmp280Init();\r
 102         //DDRB|=(1<<PINB1);\r
 103         gcontrol=1;\r
 104         sei();\r
 105     while(1)   {\r
 106         \r
 107                 if (gcontrol) {\r
 108                         //PORTB|=(1<<PINB1); //Dauer 5.4ms\r
 109                         uint32_t P;\r
 110                         int32_t t;\r
 111                         bmp280ConvertInt(&t,&P,1);\r
 112                         P=P-70000;\r
 113                         P=P/20;\r
 114                         uint16_t w=P;\r
 115                         uint8_t t8=w>>4;\r
 116                         uint8_t af=0;\r
 117                         if (t8>pack.TH) af=1;\r
 118                         if (t8<=pack.TL) af=1; \r
 119                         cli();\r
 120                         pack.temp=w;\r
 121                         //pack.temp++;\r
 122                         alarmflag=af;\r
 123                         sei();                  \r
 124                         EXTERN_SLEEP();\r
 125                         //PORTB&=~(1<<PINB1);\r
 126                 }\r
 127 \r
 128                 OWST_MAIN_END\r
 129 \r
 130    }\r
 131 \r
 132 \r
 133 }