common/I2C/CDM7160.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 #define F_CPU 8000000UL\r
  33 #include <avr/io.h>\r
  34 \r
  35 #include <util/delay.h>\r
  36 \r
  37 \r
  38 #include "TWI_Master.h"\r
  39 #include "CDM7160.h"\r
  40 \r
  41 \r
  42 \r
  43 \r
  44 uint16_t CDM7160getCO2_() {\r
  45         volatile uint8_t b1,b2;\r
  46         while((PINA&(1<<PINA0))!=0);\r
  47         I2c_StartCondition();\r
  48         I2c_WriteByte(0b11010010);\r
  49         I2c_WriteByte(0x03);\r
  50         I2c_StartCondition();\r
  51         I2c_WriteByte (0b11010011);\r
  52         b1 =I2c_ReadByte(ACK);\r
  53         b2 =I2c_ReadByte(NO_ACK);\r
  54         I2c_StopCondition();\r
  55         \r
  56         return b1|(b2<<8);\r
  57         \r
  58         \r
  59 \r
  60 }\r
  61 uint16_t CDM7160getCO2() {\r
  62         volatile uint8_t b[16],i;\r
  63         while((PINA&(1<<PINA0))!=0);\r
  64         I2c_StartCondition();\r
  65         I2c_WriteByte(0b11010010);\r
  66         I2c_WriteByte(0x00);\r
  67         I2c_StartCondition();\r
  68         I2c_WriteByte (0b11010011);\r
  69         for(i=0;i<15;i++) {\r
  70                 b[i] =I2c_ReadByte(ACK);\r
  71         }\r
  72         b[15] =I2c_ReadByte(NO_ACK);\r
  73         I2c_StopCondition();\r
  74         \r
  75         return b[3]|(b[4]<<8);\r
  76         \r
  77         \r
  78 \r
  79 }\r
  80 \r
  81 void CDM7160setMode(uint8_t mode) {\r
  82         while((PINA&(1<<PINA0))!=0);\r
  83         I2c_StartCondition();\r
  84         I2c_WriteByte(0b11010010);\r
  85         I2c_WriteByte(0x01);\r
  86         I2c_StartCondition();\r
  87         I2c_WriteByte (0b11010011);\r
  88         uint8_t b =I2c_ReadByte(NO_ACK);\r
  89         I2c_StopCondition();\r
  90         _delay_ms(2);\r
  91         b&=0xFC;\r
  92         b|=(mode<<1)&0x3;\r
  93         I2c_StartCondition();\r
  94         I2c_WriteByte(0b11010010);\r
  95         I2c_WriteByte(0x01);\r
  96         I2c_WriteByte(b);\r
  97         I2c_StopCondition();\r
  98 }\r
  99 \r
 100 void CDM7160softReset() {\r
 101         while((PINA&(1<<PINA0))!=0);\r
 102         I2c_StartCondition();\r
 103         I2c_WriteByte(0b11010010);\r
 104         I2c_WriteByte(0x00);\r
 105         I2c_WriteByte(0x01);\r
 106         I2c_StopCondition();\r
 107 }\r
 108 \r
 109 \r
 110 void CDM7160setFMode(uint8_t fmode) //Set Filtermode 0 average, 1 IIR\r
 111 {\r
 112         while((PINA&(1<<PINA0))!=0);\r
 113         I2c_StartCondition();\r
 114         I2c_WriteByte(0b11010010);\r
 115         I2c_WriteByte(0x01);\r
 116         I2c_StartCondition();\r
 117         I2c_WriteByte (0b11010011);\r
 118         volatile uint8_t b =I2c_ReadByte(NO_ACK);\r
 119         I2c_StopCondition();\r
 120         _delay_ms(2);\r
 121         b&=0xFB;\r
 122         b|=((fmode&1)<<2);\r
 123         I2c_StartCondition();\r
 124         I2c_WriteByte(0b11010010);\r
 125         I2c_WriteByte(0x01);\r
 126         I2c_WriteByte(b);\r
 127         I2c_StopCondition();\r
 128 }\r
 129 void CDM7160setAvCount(uint8_t count) {//Set the Averaging count\r
 130         while((PINA&(   1<<PINA0))!=0);\r
 131         I2c_StartCondition();\r
 132         I2c_WriteByte(0b11010010);\r
 133         I2c_WriteByte(0x07);\r
 134         I2c_WriteByte(count&0x3F);\r
 135         I2c_StopCondition();\r
 136 \r
 137 }; \r