1 // Copyright (c) 2017, Tobias Mueller tm(at)tm3d.de
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2 // All rights reserved.
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4 // Redistribution and use in source and binary forms, with or without
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5 // modification, are permitted provided that the following conditions are
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8 // * Redistributions of source code must retain the above copyright
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9 // notice, this list of conditions and the following disclaimer.
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10 // * Redistributions in binary form must reproduce the above copyright
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11 // notice, this list of conditions and the following disclaimer in the
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12 // documentation and/or other materials provided with the
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14 // * All advertising materials mentioning features or use of this
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15 // software must display the following acknowledgement: This product
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16 // includes software developed by tm3d.de and its contributors.
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17 // * Neither the name of tm3d.de nor the names of its contributors may
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18 // be used to endorse or promote products derived from this software
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19 // without specific prior written permission.
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21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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22 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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23 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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24 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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25 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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26 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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27 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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28 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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29 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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30 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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31 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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32 #define F_CPU 8000000UL
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35 #include <util/delay.h>
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38 #include "USI_TWI_Master.h"
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39 #include "CDM7160.h"
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44 uint16_t CDM7160getCO2_() {
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45 volatile uint8_t b1,b2;
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46 while((PINA&(1<<PINA0))!=0);
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47 I2c_StartCondition();
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48 I2c_WriteByte(0b11010010);
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49 I2c_WriteByte(0x03);
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50 I2c_StartCondition();
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51 I2c_WriteByte (0b11010011);
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52 b1 =I2c_ReadByte(ACK);
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53 b2 =I2c_ReadByte(NO_ACK);
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54 I2c_StopCondition();
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61 uint16_t CDM7160getCO2() {
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62 volatile uint8_t b[16],i;
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63 while((PINA&(1<<PINA0))!=0);
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64 I2c_StartCondition();
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65 I2c_WriteByte(0b11010010);
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66 I2c_WriteByte(0x00);
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67 I2c_StartCondition();
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68 I2c_WriteByte (0b11010011);
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70 b[i] =I2c_ReadByte(ACK);
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72 b[15] =I2c_ReadByte(NO_ACK);
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73 I2c_StopCondition();
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75 return b[3]|(b[4]<<8);
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81 void CDM7160setMode(uint8_t mode) {
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82 while((PINA&(1<<PINA0))!=0);
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83 I2c_StartCondition();
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84 I2c_WriteByte(0b11010010);
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85 I2c_WriteByte(0x01);
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86 I2c_StartCondition();
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87 I2c_WriteByte (0b11010011);
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88 uint8_t b =I2c_ReadByte(NO_ACK);
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89 I2c_StopCondition();
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93 I2c_StartCondition();
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94 I2c_WriteByte(0b11010010);
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95 I2c_WriteByte(0x01);
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97 I2c_StopCondition();
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100 void CDM7160softReset() {
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101 while((PINA&(1<<PINA0))!=0);
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102 I2c_StartCondition();
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103 I2c_WriteByte(0b11010010);
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104 I2c_WriteByte(0x00);
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105 I2c_WriteByte(0x01);
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106 I2c_StopCondition();
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110 void CDM7160setFMode(uint8_t fmode) //Set Filtermode 0 average, 1 IIR
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112 while((PINA&(1<<PINA0))!=0);
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113 I2c_StartCondition();
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114 I2c_WriteByte(0b11010010);
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115 I2c_WriteByte(0x01);
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116 I2c_StartCondition();
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117 I2c_WriteByte (0b11010011);
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118 volatile uint8_t b =I2c_ReadByte(NO_ACK);
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119 I2c_StopCondition();
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123 I2c_StartCondition();
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124 I2c_WriteByte(0b11010010);
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125 I2c_WriteByte(0x01);
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127 I2c_StopCondition();
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129 void CDM7160setAvCount(uint8_t count) {//Set the Averaging count
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130 while((PINA&( 1<<PINA0))!=0);
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131 I2c_StartCondition();
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132 I2c_WriteByte(0b11010010);
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133 I2c_WriteByte(0x07);
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134 I2c_WriteByte(count&0x3F);
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135 I2c_StopCondition();
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