1 | struct SensorData ReadI2C(void){
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2 | struct SensorData I2C_data;
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3 | I2C_data.Temperature = 0.0;
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4 | I2C_data.Pressure = 0.0;
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5 | unsigned long ulTemp_MSB=0;
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6 | int ulTemp_LSB=0;
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7 | unsigned long ulPres_MSB=0;
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8 |
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9 | unsigned long ulPres_CSB=0;
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10 |
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11 | unsigned long ulPres_LSB=0;
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12 |
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13 | unsigned int iFracPres=0;
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14 |
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15 | int i=0;
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16 |
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17 | //init measurement
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18 |
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19 | while(I2CMasterBusy(I2C1_MASTER_BASE) || I2CMasterBusBusy(I2C1_MASTER_BASE)){
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20 | };
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21 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, false);
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22 | I2CMasterDataPut(I2C1_MASTER_BASE,0x26);
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23 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_BURST_SEND_START);
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24 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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25 | {
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26 | };
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27 | I2CMasterDataPut(I2C1_MASTER_BASE,0x02);
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28 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_SINGLE_SEND);
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29 |
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30 |
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31 | //configure data ready event
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32 |
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33 | while(I2CMasterBusy(I2C1_MASTER_BASE) || I2CMasterBusBusy(I2C1_MASTER_BASE)){
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34 | };
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35 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, false);
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36 | I2CMasterDataPut(I2C1_MASTER_BASE,0x13);
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37 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_BURST_SEND_START);
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38 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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39 | {
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40 | };
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41 | I2CMasterDataPut(I2C1_MASTER_BASE,0x07);
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42 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_SINGLE_SEND);
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43 |
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44 |
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45 | //set ship active
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46 |
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47 | while(I2CMasterBusy(I2C1_MASTER_BASE) || I2CMasterBusBusy(I2C1_MASTER_BASE)){
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48 | };
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49 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, false);
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50 | I2CMasterDataPut(I2C1_MASTER_BASE,0x26);
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51 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_BURST_SEND_START);
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52 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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53 | {
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54 | };
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55 | I2CMasterDataPut(I2C1_MASTER_BASE,0x03);
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56 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_SINGLE_SEND);
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57 |
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58 | //poll data for temp
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59 | while(I2CMasterBusy(I2C1_MASTER_BASE) || I2CMasterBusBusy(I2C1_MASTER_BASE))
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60 | {
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61 | };
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62 |
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63 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, false);
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64 | I2CMasterDataPut(I2C1_MASTER_BASE,0x04);
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65 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_BURST_SEND_START);
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66 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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67 | {
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68 | };
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69 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, true);
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70 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_SINGLE_RECEIVE);
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71 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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72 | {
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73 | };
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74 | ulTemp_MSB=I2CMasterDataGet(I2C1_MASTER_BASE);
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75 |
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76 | while(I2CMasterBusy(I2C1_MASTER_BASE) || I2CMasterBusBusy(I2C1_MASTER_BASE))
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77 | {
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78 | };
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79 |
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80 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, false);
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81 | I2CMasterDataPut(I2C1_MASTER_BASE,0x05);
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82 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_BURST_SEND_START);
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83 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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84 | {
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85 | };
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86 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, true);
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87 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_SINGLE_RECEIVE);
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88 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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89 | {
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90 | };
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91 | ulTemp_LSB=I2CMasterDataGet(I2C1_MASTER_BASE);
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92 |
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93 |
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94 |
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95 | I2C_data.Temperature = ulTemp_MSB + ((float)ulTemp_LSB)/1000;
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96 |
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97 |
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98 | //poll data for pressure
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99 | while(I2CMasterBusy(I2C1_MASTER_BASE) || I2CMasterBusBusy(I2C1_MASTER_BASE))
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100 | {
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101 | };
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102 |
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103 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, false);
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104 | I2CMasterDataPut(I2C1_MASTER_BASE,0x01);
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105 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_BURST_SEND_START);
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106 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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107 | {
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108 | };
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109 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, true);
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110 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_SINGLE_RECEIVE);
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111 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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112 | {
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113 | };
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114 | ulPres_MSB=I2CMasterDataGet(I2C1_MASTER_BASE);
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115 |
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116 | ulPres_MSB <<=10;
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117 |
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118 | while(I2CMasterBusy(I2C1_MASTER_BASE) || I2CMasterBusBusy(I2C1_MASTER_BASE))
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119 | {
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120 | };
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121 |
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122 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, false);
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123 | I2CMasterDataPut(I2C1_MASTER_BASE,0x02);
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124 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_BURST_SEND_START);
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125 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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126 | {
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127 | };
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128 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, true);
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129 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_SINGLE_RECEIVE);
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130 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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131 | {
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132 | };
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133 | ulPres_CSB=I2CMasterDataGet(I2C1_MASTER_BASE);
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134 | ulPres_CSB<<=2;
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135 |
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136 | while(I2CMasterBusy(I2C1_MASTER_BASE) || I2CMasterBusBusy(I2C1_MASTER_BASE))
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137 | {
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138 | };
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139 |
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140 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, false);
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141 | I2CMasterDataPut(I2C1_MASTER_BASE,0x03);
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142 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_BURST_SEND_START);
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143 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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144 | {
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145 | };
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146 | I2CMasterSlaveAddrSet(I2C1_MASTER_BASE, 0x60, true);
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147 | I2CMasterControl(I2C1_MASTER_BASE,I2C_MASTER_CMD_SINGLE_RECEIVE);
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148 | while(I2CMasterBusy(I2C1_MASTER_BASE))
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149 | {
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150 | };
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151 | ulPres_LSB=I2CMasterDataGet(I2C1_MASTER_BASE);
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152 |
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153 |
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154 | iFracPres = ulPres_LSB;
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155 | ulPres_LSB>>=5;
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156 |
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157 | for(i=0;i<2;i++){
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158 | if(i==0){
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159 | iFracPres = iFracPres << 11;
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160 | }else{
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161 | iFracPres = iFracPres >> 15;
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162 | }
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163 | }
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164 | I2C_data.Pressure = (ulPres_MSB + ulPres_CSB + ulPres_LSB +(float)iFracPres/10.0)/100.0;
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165 | return I2C_data;
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