SPS30 library
Dependents: IZU2021_SPS30 Hybrid_IZU2021_MISSION_v2 Hybrid_IZU2021_MISSION
sps30.cpp@2:549bee9a4cd0, 2019-03-05 (annotated)
- Committer:
- ziqiyap
- Date:
- Tue Mar 05 07:01:55 2019 +0000
- Revision:
- 2:549bee9a4cd0
- Parent:
- 0:9221dac25d3b
- Child:
- 4:7558ddc3c7d6
added auto clean and manual clean class methods
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ziqiyap | 0:9221dac25d3b | 1 | #include "mbed.h" |
ziqiyap | 0:9221dac25d3b | 2 | #include "sps30.h" |
ziqiyap | 0:9221dac25d3b | 3 | |
ziqiyap | 0:9221dac25d3b | 4 | //----------------------------------------------------------------------------- |
ziqiyap | 0:9221dac25d3b | 5 | // Constructor |
ziqiyap | 0:9221dac25d3b | 6 | |
ziqiyap | 0:9221dac25d3b | 7 | sps30::sps30(PinName sda, PinName scl, int i2cFrequency) : _i2c(sda, scl) { |
ziqiyap | 0:9221dac25d3b | 8 | _i2c.frequency(i2cFrequency); |
ziqiyap | 0:9221dac25d3b | 9 | } |
ziqiyap | 0:9221dac25d3b | 10 | |
ziqiyap | 0:9221dac25d3b | 11 | //----------------------------------------------------------------------------- |
ziqiyap | 0:9221dac25d3b | 12 | // Destructor |
ziqiyap | 0:9221dac25d3b | 13 | |
ziqiyap | 0:9221dac25d3b | 14 | sps30::~sps30() { |
ziqiyap | 0:9221dac25d3b | 15 | } |
ziqiyap | 0:9221dac25d3b | 16 | |
ziqiyap | 0:9221dac25d3b | 17 | //----------------------------------------------------------------------------- |
ziqiyap | 2:549bee9a4cd0 | 18 | // start auto-measurement |
ziqiyap | 0:9221dac25d3b | 19 | // |
ziqiyap | 0:9221dac25d3b | 20 | |
ziqiyap | 2:549bee9a4cd0 | 21 | uint8_t sps30::startMeasurement() |
ziqiyap | 0:9221dac25d3b | 22 | { |
ziqiyap | 0:9221dac25d3b | 23 | i2cBuff[0] = SPS30_CMMD_STRT_MEAS >> 8; |
ziqiyap | 0:9221dac25d3b | 24 | i2cBuff[1] = SPS30_CMMD_STRT_MEAS & 255; |
ziqiyap | 0:9221dac25d3b | 25 | i2cBuff[2] = 0x03; |
ziqiyap | 0:9221dac25d3b | 26 | i2cBuff[3] = 0x00; |
ziqiyap | 0:9221dac25d3b | 27 | i2cBuff[4] = sps30::calcCrc2b(0x0300); |
ziqiyap | 0:9221dac25d3b | 28 | int res = _i2c.write(SPS30_I2C_ADDR, i2cBuff, 5, false); |
ziqiyap | 0:9221dac25d3b | 29 | if(res) return SPSnoAckERROR; |
ziqiyap | 0:9221dac25d3b | 30 | return SPSnoERROR; |
ziqiyap | 0:9221dac25d3b | 31 | } |
ziqiyap | 0:9221dac25d3b | 32 | |
ziqiyap | 0:9221dac25d3b | 33 | //----------------------------------------------------------------------------- |
ziqiyap | 0:9221dac25d3b | 34 | // Stop auto-measurement |
ziqiyap | 0:9221dac25d3b | 35 | |
ziqiyap | 2:549bee9a4cd0 | 36 | uint8_t sps30::stopMeasurement() |
ziqiyap | 0:9221dac25d3b | 37 | { |
ziqiyap | 0:9221dac25d3b | 38 | i2cBuff[0] = SPS30_CMMD_STOP_MEAS >> 8; |
ziqiyap | 0:9221dac25d3b | 39 | i2cBuff[1] = SPS30_CMMD_STOP_MEAS & 255; |
ziqiyap | 0:9221dac25d3b | 40 | int res = _i2c.write(SPS30_I2C_ADDR, i2cBuff, 2, false); |
ziqiyap | 0:9221dac25d3b | 41 | if(res) return SPSnoAckERROR; |
ziqiyap | 0:9221dac25d3b | 42 | return SPSnoERROR; |
ziqiyap | 0:9221dac25d3b | 43 | } |
ziqiyap | 0:9221dac25d3b | 44 | |
ziqiyap | 0:9221dac25d3b | 45 | //----------------------------------------------------------------------------- |
ziqiyap | 0:9221dac25d3b | 46 | // Get ready status value |
ziqiyap | 0:9221dac25d3b | 47 | |
ziqiyap | 2:549bee9a4cd0 | 48 | uint8_t sps30::getReadyStatus() |
ziqiyap | 0:9221dac25d3b | 49 | { |
ziqiyap | 0:9221dac25d3b | 50 | i2cBuff[0] = SPS30_CMMD_GET_READY_STAT >> 8; |
ziqiyap | 0:9221dac25d3b | 51 | i2cBuff[1] = SPS30_CMMD_GET_READY_STAT & 255; |
ziqiyap | 0:9221dac25d3b | 52 | int res = _i2c.write(SPS30_I2C_ADDR, i2cBuff, 2, false); |
ziqiyap | 0:9221dac25d3b | 53 | if(res) return SPSnoAckERROR; |
ziqiyap | 0:9221dac25d3b | 54 | |
ziqiyap | 0:9221dac25d3b | 55 | _i2c.read(SPS30_I2C_ADDR | 1, i2cBuff, 3, false); |
ziqiyap | 0:9221dac25d3b | 56 | uint16_t stat = (i2cBuff[0] << 8) | i2cBuff[1]; |
ziqiyap | 0:9221dac25d3b | 57 | ready = stat; |
ziqiyap | 0:9221dac25d3b | 58 | uint8_t dat = sps30::checkCrc2b(stat, i2cBuff[2]); |
ziqiyap | 0:9221dac25d3b | 59 | |
ziqiyap | 0:9221dac25d3b | 60 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 61 | if(dat == SPSisReady) return SPSisReady; |
ziqiyap | 0:9221dac25d3b | 62 | return SPSnoERROR; |
ziqiyap | 0:9221dac25d3b | 63 | } |
ziqiyap | 0:9221dac25d3b | 64 | |
ziqiyap | 0:9221dac25d3b | 65 | //----------------------------------------------------------------------------- |
ziqiyap | 0:9221dac25d3b | 66 | // Get all the measurement values, stick them into the array |
ziqiyap | 0:9221dac25d3b | 67 | |
ziqiyap | 2:549bee9a4cd0 | 68 | uint8_t sps30::readMeasurement() |
ziqiyap | 0:9221dac25d3b | 69 | { |
ziqiyap | 0:9221dac25d3b | 70 | i2cBuff[0] = SPS30_CMMD_READ_MEAS >> 8; |
ziqiyap | 0:9221dac25d3b | 71 | i2cBuff[1] = SPS30_CMMD_READ_MEAS & 255; |
ziqiyap | 0:9221dac25d3b | 72 | int res = _i2c.write(SPS30_I2C_ADDR, i2cBuff, 2, false); |
ziqiyap | 0:9221dac25d3b | 73 | if(res) return SPSnoAckERROR; |
ziqiyap | 0:9221dac25d3b | 74 | |
ziqiyap | 0:9221dac25d3b | 75 | _i2c.read(SPS30_I2C_ADDR | 1, i2cBuff, 60, false); |
ziqiyap | 0:9221dac25d3b | 76 | |
ziqiyap | 0:9221dac25d3b | 77 | uint16_t stat = (i2cBuff[0] << 8) | i2cBuff[1]; |
ziqiyap | 0:9221dac25d3b | 78 | mass_1p0_m = stat; |
ziqiyap | 0:9221dac25d3b | 79 | uint8_t dat = sps30::checkCrc2b(stat, i2cBuff[2]); |
ziqiyap | 0:9221dac25d3b | 80 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 81 | |
ziqiyap | 0:9221dac25d3b | 82 | stat = (i2cBuff[3] << 8) | i2cBuff[4]; |
ziqiyap | 0:9221dac25d3b | 83 | mass_1p0_l = stat; |
ziqiyap | 0:9221dac25d3b | 84 | dat = sps30::checkCrc2b(stat, i2cBuff[5]); |
ziqiyap | 0:9221dac25d3b | 85 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 86 | |
ziqiyap | 0:9221dac25d3b | 87 | |
ziqiyap | 0:9221dac25d3b | 88 | |
ziqiyap | 0:9221dac25d3b | 89 | stat = (i2cBuff[6] << 8) | i2cBuff[7]; |
ziqiyap | 0:9221dac25d3b | 90 | mass_2p5_m = stat; |
ziqiyap | 0:9221dac25d3b | 91 | dat = sps30::checkCrc2b(stat, i2cBuff[8]); |
ziqiyap | 0:9221dac25d3b | 92 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 93 | |
ziqiyap | 0:9221dac25d3b | 94 | stat = (i2cBuff[9] << 8) | i2cBuff[10]; |
ziqiyap | 0:9221dac25d3b | 95 | mass_2p5_l = stat; |
ziqiyap | 0:9221dac25d3b | 96 | dat = sps30::checkCrc2b(stat, i2cBuff[11]); |
ziqiyap | 0:9221dac25d3b | 97 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 98 | |
ziqiyap | 0:9221dac25d3b | 99 | |
ziqiyap | 0:9221dac25d3b | 100 | |
ziqiyap | 0:9221dac25d3b | 101 | stat = (i2cBuff[12] << 8) | i2cBuff[13]; |
ziqiyap | 0:9221dac25d3b | 102 | mass_4p0_m = stat; |
ziqiyap | 0:9221dac25d3b | 103 | dat = sps30::checkCrc2b(stat, i2cBuff[14]); |
ziqiyap | 0:9221dac25d3b | 104 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 105 | |
ziqiyap | 0:9221dac25d3b | 106 | stat = (i2cBuff[15] << 8) | i2cBuff[16]; |
ziqiyap | 0:9221dac25d3b | 107 | mass_4p0_l = stat; |
ziqiyap | 0:9221dac25d3b | 108 | dat = sps30::checkCrc2b(stat, i2cBuff[17]); |
ziqiyap | 0:9221dac25d3b | 109 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 110 | |
ziqiyap | 0:9221dac25d3b | 111 | |
ziqiyap | 0:9221dac25d3b | 112 | |
ziqiyap | 0:9221dac25d3b | 113 | stat = (i2cBuff[18] << 8) | i2cBuff[19]; |
ziqiyap | 0:9221dac25d3b | 114 | mass_10p0_m = stat; |
ziqiyap | 0:9221dac25d3b | 115 | dat = sps30::checkCrc2b(stat, i2cBuff[20]); |
ziqiyap | 0:9221dac25d3b | 116 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 117 | |
ziqiyap | 0:9221dac25d3b | 118 | stat = (i2cBuff[21] << 8) | i2cBuff[22]; |
ziqiyap | 0:9221dac25d3b | 119 | mass_10p0_l = stat; |
ziqiyap | 0:9221dac25d3b | 120 | dat = sps30::checkCrc2b(stat, i2cBuff[23]); |
ziqiyap | 0:9221dac25d3b | 121 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 122 | |
ziqiyap | 0:9221dac25d3b | 123 | |
ziqiyap | 0:9221dac25d3b | 124 | |
ziqiyap | 0:9221dac25d3b | 125 | stat = (i2cBuff[24] << 8) | i2cBuff[25]; |
ziqiyap | 0:9221dac25d3b | 126 | num_0p5_m = stat; |
ziqiyap | 0:9221dac25d3b | 127 | dat = sps30::checkCrc2b(stat, i2cBuff[26]); |
ziqiyap | 0:9221dac25d3b | 128 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 129 | |
ziqiyap | 0:9221dac25d3b | 130 | stat = (i2cBuff[27] << 8) | i2cBuff[28]; |
ziqiyap | 0:9221dac25d3b | 131 | num_0p5_l = stat; |
ziqiyap | 0:9221dac25d3b | 132 | dat = sps30::checkCrc2b(stat, i2cBuff[29]); |
ziqiyap | 0:9221dac25d3b | 133 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 134 | |
ziqiyap | 0:9221dac25d3b | 135 | |
ziqiyap | 0:9221dac25d3b | 136 | stat = (i2cBuff[30] << 8) | i2cBuff[31]; |
ziqiyap | 0:9221dac25d3b | 137 | num_1p0_m = stat; |
ziqiyap | 0:9221dac25d3b | 138 | dat = sps30::checkCrc2b(stat, i2cBuff[32]); |
ziqiyap | 0:9221dac25d3b | 139 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 140 | |
ziqiyap | 0:9221dac25d3b | 141 | stat = (i2cBuff[33] << 8) | i2cBuff[34]; |
ziqiyap | 0:9221dac25d3b | 142 | num_1p0_l = stat; |
ziqiyap | 0:9221dac25d3b | 143 | dat = sps30::checkCrc2b(stat, i2cBuff[35]); |
ziqiyap | 0:9221dac25d3b | 144 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 145 | |
ziqiyap | 0:9221dac25d3b | 146 | |
ziqiyap | 0:9221dac25d3b | 147 | |
ziqiyap | 0:9221dac25d3b | 148 | stat = (i2cBuff[36] << 8) | i2cBuff[37]; |
ziqiyap | 0:9221dac25d3b | 149 | num_2p5_m = stat; |
ziqiyap | 0:9221dac25d3b | 150 | dat = sps30::checkCrc2b(stat, i2cBuff[38]); |
ziqiyap | 0:9221dac25d3b | 151 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 152 | |
ziqiyap | 0:9221dac25d3b | 153 | stat = (i2cBuff[39] << 8) | i2cBuff[40]; |
ziqiyap | 0:9221dac25d3b | 154 | num_2p5_l = stat; |
ziqiyap | 0:9221dac25d3b | 155 | dat = sps30::checkCrc2b(stat, i2cBuff[41]); |
ziqiyap | 0:9221dac25d3b | 156 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 157 | |
ziqiyap | 0:9221dac25d3b | 158 | |
ziqiyap | 0:9221dac25d3b | 159 | |
ziqiyap | 0:9221dac25d3b | 160 | stat = (i2cBuff[42] << 8) | i2cBuff[43]; |
ziqiyap | 0:9221dac25d3b | 161 | num_4p0_m = stat; |
ziqiyap | 0:9221dac25d3b | 162 | dat = sps30::checkCrc2b(stat, i2cBuff[44]); |
ziqiyap | 0:9221dac25d3b | 163 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 164 | |
ziqiyap | 0:9221dac25d3b | 165 | stat = (i2cBuff[45] << 8) | i2cBuff[46]; |
ziqiyap | 0:9221dac25d3b | 166 | num_4p0_l = stat; |
ziqiyap | 0:9221dac25d3b | 167 | dat = sps30::checkCrc2b(stat, i2cBuff[47]); |
ziqiyap | 0:9221dac25d3b | 168 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 169 | |
ziqiyap | 0:9221dac25d3b | 170 | |
ziqiyap | 0:9221dac25d3b | 171 | stat = (i2cBuff[48] << 8) | i2cBuff[49]; |
ziqiyap | 0:9221dac25d3b | 172 | num_10p0_m = stat; |
ziqiyap | 0:9221dac25d3b | 173 | dat = sps30::checkCrc2b(stat, i2cBuff[50]); |
ziqiyap | 0:9221dac25d3b | 174 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 175 | |
ziqiyap | 0:9221dac25d3b | 176 | stat = (i2cBuff[51] << 8) | i2cBuff[52]; |
ziqiyap | 0:9221dac25d3b | 177 | num_10p0_l = stat; |
ziqiyap | 0:9221dac25d3b | 178 | dat = sps30::checkCrc2b(stat, i2cBuff[53]); |
ziqiyap | 0:9221dac25d3b | 179 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 180 | |
ziqiyap | 0:9221dac25d3b | 181 | |
ziqiyap | 0:9221dac25d3b | 182 | stat = (i2cBuff[54] << 8) | i2cBuff[55]; |
ziqiyap | 0:9221dac25d3b | 183 | typ_pm_size_m = stat; |
ziqiyap | 0:9221dac25d3b | 184 | dat = sps30::checkCrc2b(stat, i2cBuff[56]); |
ziqiyap | 0:9221dac25d3b | 185 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 186 | |
ziqiyap | 0:9221dac25d3b | 187 | stat = (i2cBuff[57] << 8) | i2cBuff[58]; |
ziqiyap | 0:9221dac25d3b | 188 | typ_pm_size_l = stat; |
ziqiyap | 0:9221dac25d3b | 189 | dat = sps30::checkCrc2b(stat, i2cBuff[59]); |
ziqiyap | 0:9221dac25d3b | 190 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 191 | |
ziqiyap | 0:9221dac25d3b | 192 | mass_1p0_i = (mass_1p0_m << 16) | mass_1p0_l; |
ziqiyap | 0:9221dac25d3b | 193 | mass_2p5_i = (mass_2p5_m << 16) | mass_2p5_l; |
ziqiyap | 0:9221dac25d3b | 194 | mass_4p0_i = (mass_4p0_m << 16) | mass_4p0_l; |
ziqiyap | 0:9221dac25d3b | 195 | mass_10p0_i = (mass_10p0_m << 16) | mass_10p0_l; |
ziqiyap | 0:9221dac25d3b | 196 | |
ziqiyap | 0:9221dac25d3b | 197 | num_0p5_i = (num_0p5_m << 16) | num_0p5_l; |
ziqiyap | 0:9221dac25d3b | 198 | num_1p0_i = (num_1p0_m << 16) | num_1p0_l; |
ziqiyap | 0:9221dac25d3b | 199 | num_2p5_i = (num_2p5_m << 16) | num_2p5_l; |
ziqiyap | 0:9221dac25d3b | 200 | num_4p0_i = (num_4p0_m << 16) | num_4p0_l; |
ziqiyap | 0:9221dac25d3b | 201 | num_10p0_i = (num_10p0_m << 16) | num_10p0_l; |
ziqiyap | 0:9221dac25d3b | 202 | |
ziqiyap | 0:9221dac25d3b | 203 | typ_pm_size_i = (typ_pm_size_m << 16) | typ_pm_size_l; |
ziqiyap | 0:9221dac25d3b | 204 | |
ziqiyap | 0:9221dac25d3b | 205 | mass_1p0_f = *(float*)&mass_1p0_i; |
ziqiyap | 0:9221dac25d3b | 206 | mass_2p5_f = *(float*)&mass_2p5_i; |
ziqiyap | 0:9221dac25d3b | 207 | mass_4p0_f = *(float*)&mass_4p0_i; |
ziqiyap | 0:9221dac25d3b | 208 | mass_10p0_f = *(float*)&mass_10p0_i; |
ziqiyap | 0:9221dac25d3b | 209 | |
ziqiyap | 0:9221dac25d3b | 210 | num_0p5_f = *(float*)&num_0p5_i; |
ziqiyap | 0:9221dac25d3b | 211 | num_1p0_f = *(float*)&num_1p0_i; |
ziqiyap | 0:9221dac25d3b | 212 | num_2p5_f = *(float*)&num_2p5_i; |
ziqiyap | 0:9221dac25d3b | 213 | num_4p0_f = *(float*)&num_4p0_i; |
ziqiyap | 0:9221dac25d3b | 214 | num_10p0_f = *(float*)&num_10p0_i; |
ziqiyap | 0:9221dac25d3b | 215 | |
ziqiyap | 0:9221dac25d3b | 216 | typ_pm_size_f = *(float*)&typ_pm_size_i; |
ziqiyap | 0:9221dac25d3b | 217 | |
ziqiyap | 0:9221dac25d3b | 218 | return SPSnoERROR; |
ziqiyap | 0:9221dac25d3b | 219 | } |
ziqiyap | 0:9221dac25d3b | 220 | |
ziqiyap | 0:9221dac25d3b | 221 | //----------------------------------------------------------------------------- |
ziqiyap | 0:9221dac25d3b | 222 | // Calculate the CRC of a 2 byte value using the SPS30 CRC polynomial |
ziqiyap | 0:9221dac25d3b | 223 | |
ziqiyap | 0:9221dac25d3b | 224 | uint8_t sps30::calcCrc2b(uint16_t seed) |
ziqiyap | 0:9221dac25d3b | 225 | { |
ziqiyap | 0:9221dac25d3b | 226 | uint8_t bit; // bit mask |
ziqiyap | 0:9221dac25d3b | 227 | uint8_t crc = SPS30_CRC_INIT; // calculated checksum |
ziqiyap | 0:9221dac25d3b | 228 | |
ziqiyap | 0:9221dac25d3b | 229 | // calculates 8-Bit checksum with given polynomial |
ziqiyap | 0:9221dac25d3b | 230 | |
ziqiyap | 0:9221dac25d3b | 231 | crc ^= (seed >> 8) & 255; |
ziqiyap | 0:9221dac25d3b | 232 | for(bit = 8; bit > 0; --bit) |
ziqiyap | 0:9221dac25d3b | 233 | { |
ziqiyap | 0:9221dac25d3b | 234 | if(crc & 0x80) crc = (crc << 1) ^ SPS30_POLYNOMIAL; |
ziqiyap | 0:9221dac25d3b | 235 | else crc = (crc << 1); |
ziqiyap | 0:9221dac25d3b | 236 | } |
ziqiyap | 0:9221dac25d3b | 237 | |
ziqiyap | 0:9221dac25d3b | 238 | crc ^= seed & 255; |
ziqiyap | 0:9221dac25d3b | 239 | for(bit = 8; bit > 0; --bit) |
ziqiyap | 0:9221dac25d3b | 240 | { |
ziqiyap | 0:9221dac25d3b | 241 | if(crc & 0x80) crc = (crc << 1) ^ SPS30_POLYNOMIAL; |
ziqiyap | 0:9221dac25d3b | 242 | else crc = (crc << 1); |
ziqiyap | 0:9221dac25d3b | 243 | } |
ziqiyap | 0:9221dac25d3b | 244 | |
ziqiyap | 0:9221dac25d3b | 245 | return crc; |
ziqiyap | 0:9221dac25d3b | 246 | } |
ziqiyap | 0:9221dac25d3b | 247 | |
ziqiyap | 0:9221dac25d3b | 248 | //----------------------------------------------------------------------------- |
ziqiyap | 0:9221dac25d3b | 249 | // Compare the CRC values |
ziqiyap | 0:9221dac25d3b | 250 | |
ziqiyap | 0:9221dac25d3b | 251 | uint8_t sps30::checkCrc2b(uint16_t seed, uint8_t crcIn) |
ziqiyap | 0:9221dac25d3b | 252 | { |
ziqiyap | 0:9221dac25d3b | 253 | uint8_t crcCalc = sps30::calcCrc2b(seed); |
ziqiyap | 0:9221dac25d3b | 254 | if(crcCalc != crcIn) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 255 | return SPSnoERROR; |
ziqiyap | 0:9221dac25d3b | 256 | } |
ziqiyap | 0:9221dac25d3b | 257 | |
ziqiyap | 0:9221dac25d3b | 258 | //----------------------------------------------------------------------------- |
ziqiyap | 0:9221dac25d3b | 259 | // Get article code |
ziqiyap | 0:9221dac25d3b | 260 | |
ziqiyap | 0:9221dac25d3b | 261 | uint8_t sps30::getArticleCode() |
ziqiyap | 0:9221dac25d3b | 262 | { |
ziqiyap | 0:9221dac25d3b | 263 | i2cBuff[0] = SPS30_CMMD_READ_ARTICLECODE >> 8; |
ziqiyap | 0:9221dac25d3b | 264 | i2cBuff[1] = SPS30_CMMD_READ_ARTICLECODE & 255; |
ziqiyap | 0:9221dac25d3b | 265 | int res = _i2c.write(SPS30_I2C_ADDR, i2cBuff, 2, false); |
ziqiyap | 0:9221dac25d3b | 266 | if(res) return SPSnoAckERROR; |
ziqiyap | 0:9221dac25d3b | 267 | |
ziqiyap | 0:9221dac25d3b | 268 | int i = 0; |
ziqiyap | 0:9221dac25d3b | 269 | for(i = 0; i < sizeof(acode); i++) acode[i] = 0; |
ziqiyap | 0:9221dac25d3b | 270 | for(i = 0; i < sizeof(i2cBuff); i++) i2cBuff[i] = 0; |
ziqiyap | 0:9221dac25d3b | 271 | |
ziqiyap | 0:9221dac25d3b | 272 | _i2c.read(SPS30_I2C_ADDR | 1, i2cBuff, SPS30_ACODE_SIZE, false); |
ziqiyap | 0:9221dac25d3b | 273 | int t = 0; |
ziqiyap | 0:9221dac25d3b | 274 | for(i = 0; i < SPS30_ACODE_SIZE; i +=3) { |
ziqiyap | 0:9221dac25d3b | 275 | uint16_t stat = (i2cBuff[i] << 8) | i2cBuff[i + 1]; |
ziqiyap | 0:9221dac25d3b | 276 | acode[i - t] = stat >> 8; |
ziqiyap | 0:9221dac25d3b | 277 | acode[i - t + 1] = stat & 255; |
ziqiyap | 0:9221dac25d3b | 278 | uint8_t dat = sps30::checkCrc2b(stat, i2cBuff[i + 2]); |
ziqiyap | 0:9221dac25d3b | 279 | t++; |
ziqiyap | 0:9221dac25d3b | 280 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 281 | if(stat == 0) break; |
ziqiyap | 0:9221dac25d3b | 282 | } |
ziqiyap | 0:9221dac25d3b | 283 | |
ziqiyap | 0:9221dac25d3b | 284 | return SPSnoERROR; |
ziqiyap | 0:9221dac25d3b | 285 | } |
ziqiyap | 0:9221dac25d3b | 286 | |
ziqiyap | 0:9221dac25d3b | 287 | //----------------------------------------------------------------------------- |
ziqiyap | 0:9221dac25d3b | 288 | // Get sps30 serial number |
ziqiyap | 0:9221dac25d3b | 289 | |
ziqiyap | 0:9221dac25d3b | 290 | uint8_t sps30::getSerialNumber() |
ziqiyap | 0:9221dac25d3b | 291 | { |
ziqiyap | 0:9221dac25d3b | 292 | i2cBuff[0] = SPS30_CMMD_READ_SERIALNBR >> 8; |
ziqiyap | 0:9221dac25d3b | 293 | i2cBuff[1] = SPS30_CMMD_READ_SERIALNBR & 255; |
ziqiyap | 0:9221dac25d3b | 294 | int res = _i2c.write(SPS30_I2C_ADDR, i2cBuff, 2, false); |
ziqiyap | 0:9221dac25d3b | 295 | if(res) return SPSnoAckERROR; |
ziqiyap | 0:9221dac25d3b | 296 | |
ziqiyap | 0:9221dac25d3b | 297 | int i = 0; |
ziqiyap | 0:9221dac25d3b | 298 | for(i = 0; i < sizeof(sn); i++) sn[i] = 0; |
ziqiyap | 0:9221dac25d3b | 299 | for(i = 0; i < sizeof(i2cBuff); i++) i2cBuff[i] = 0; |
ziqiyap | 0:9221dac25d3b | 300 | |
ziqiyap | 0:9221dac25d3b | 301 | _i2c.read(SPS30_I2C_ADDR | 1, i2cBuff, SPS30_SN_SIZE, false); |
ziqiyap | 0:9221dac25d3b | 302 | int t = 0; |
ziqiyap | 0:9221dac25d3b | 303 | for(i = 0; i < SPS30_SN_SIZE; i +=3) { |
ziqiyap | 0:9221dac25d3b | 304 | uint16_t stat = (i2cBuff[i] << 8) | i2cBuff[i + 1]; |
ziqiyap | 0:9221dac25d3b | 305 | sn[i - t] = stat >> 8; |
ziqiyap | 0:9221dac25d3b | 306 | sn[i - t + 1] = stat & 255; |
ziqiyap | 0:9221dac25d3b | 307 | uint8_t dat = sps30::checkCrc2b(stat, i2cBuff[i + 2]); |
ziqiyap | 0:9221dac25d3b | 308 | t++; |
ziqiyap | 0:9221dac25d3b | 309 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 0:9221dac25d3b | 310 | if(stat == 0) break; |
ziqiyap | 0:9221dac25d3b | 311 | } |
ziqiyap | 0:9221dac25d3b | 312 | |
ziqiyap | 0:9221dac25d3b | 313 | return SPSnoERROR; |
ziqiyap | 0:9221dac25d3b | 314 | } |
ziqiyap | 0:9221dac25d3b | 315 | |
ziqiyap | 0:9221dac25d3b | 316 | //----------------------------------------------------------------------------- |
ziqiyap | 2:549bee9a4cd0 | 317 | // Read Auto Cleaning Interval on the SPS30 |
ziqiyap | 2:549bee9a4cd0 | 318 | |
ziqiyap | 2:549bee9a4cd0 | 319 | uint8_t sps30::readAutoCleanInterval() |
ziqiyap | 2:549bee9a4cd0 | 320 | { |
ziqiyap | 2:549bee9a4cd0 | 321 | i2cBuff[0] = SPS30_CMMD_AUTO_CLEAN_INTV >> 8; |
ziqiyap | 2:549bee9a4cd0 | 322 | i2cBuff[1] = SPS30_CMMD_AUTO_CLEAN_INTV & 255; |
ziqiyap | 2:549bee9a4cd0 | 323 | |
ziqiyap | 2:549bee9a4cd0 | 324 | int res = _i2c.write(SPS30_I2C_ADDR, i2cBuff, 2, false); |
ziqiyap | 2:549bee9a4cd0 | 325 | if(res) return SPSnoAckERROR; |
ziqiyap | 2:549bee9a4cd0 | 326 | |
ziqiyap | 2:549bee9a4cd0 | 327 | _i2c.read(SPS30_I2C_ADDR | 1, i2cBuff, 6, false); |
ziqiyap | 2:549bee9a4cd0 | 328 | |
ziqiyap | 2:549bee9a4cd0 | 329 | uint16_t stat = (i2cBuff[0] << 8) | i2cBuff[1]; |
ziqiyap | 2:549bee9a4cd0 | 330 | clean_interval_m = stat; |
ziqiyap | 2:549bee9a4cd0 | 331 | uint8_t dat = sps30::checkCrc2b(stat, i2cBuff[2]); |
ziqiyap | 2:549bee9a4cd0 | 332 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 2:549bee9a4cd0 | 333 | |
ziqiyap | 2:549bee9a4cd0 | 334 | stat = (i2cBuff[3] << 8) | i2cBuff[4]; |
ziqiyap | 2:549bee9a4cd0 | 335 | clean_interval_l = stat; |
ziqiyap | 2:549bee9a4cd0 | 336 | dat = sps30::checkCrc2b(stat, i2cBuff[5]); |
ziqiyap | 2:549bee9a4cd0 | 337 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 2:549bee9a4cd0 | 338 | |
ziqiyap | 2:549bee9a4cd0 | 339 | clean_interval_i = (clean_interval_m << 16) | clean_interval_l; |
ziqiyap | 2:549bee9a4cd0 | 340 | |
ziqiyap | 2:549bee9a4cd0 | 341 | return SPSnoERROR; |
ziqiyap | 2:549bee9a4cd0 | 342 | } |
ziqiyap | 2:549bee9a4cd0 | 343 | |
ziqiyap | 2:549bee9a4cd0 | 344 | //----------------------------------------------------------------------------- |
ziqiyap | 2:549bee9a4cd0 | 345 | // Set Auto Cleaning Interval on the SPS30 |
ziqiyap | 2:549bee9a4cd0 | 346 | |
ziqiyap | 2:549bee9a4cd0 | 347 | uint8_t sps30::setAutoCleanInterval(uint32_t set_interval) |
ziqiyap | 2:549bee9a4cd0 | 348 | { |
ziqiyap | 2:549bee9a4cd0 | 349 | uint16_t set_interval_m = set_interval >> 16; |
ziqiyap | 2:549bee9a4cd0 | 350 | uint16_t set_interval_l = set_interval & 65535; |
ziqiyap | 2:549bee9a4cd0 | 351 | |
ziqiyap | 2:549bee9a4cd0 | 352 | i2cBuff[0] = SPS30_CMMD_AUTO_CLEAN_INTV >> 8; |
ziqiyap | 2:549bee9a4cd0 | 353 | i2cBuff[1] = SPS30_CMMD_AUTO_CLEAN_INTV & 255; |
ziqiyap | 2:549bee9a4cd0 | 354 | |
ziqiyap | 2:549bee9a4cd0 | 355 | i2cBuff[2] = set_interval_m >> 8; |
ziqiyap | 2:549bee9a4cd0 | 356 | i2cBuff[3] = set_interval_m & 255; |
ziqiyap | 2:549bee9a4cd0 | 357 | i2cBuff[4] = sps30::calcCrc2b(set_interval_m); |
ziqiyap | 2:549bee9a4cd0 | 358 | |
ziqiyap | 2:549bee9a4cd0 | 359 | i2cBuff[5] = set_interval_l >> 8; |
ziqiyap | 2:549bee9a4cd0 | 360 | i2cBuff[6] = set_interval_l & 255; |
ziqiyap | 2:549bee9a4cd0 | 361 | i2cBuff[7] = sps30::calcCrc2b(set_interval_l); |
ziqiyap | 2:549bee9a4cd0 | 362 | |
ziqiyap | 2:549bee9a4cd0 | 363 | int res = _i2c.write(SPS30_I2C_ADDR, i2cBuff, 8, false); |
ziqiyap | 2:549bee9a4cd0 | 364 | if(res) return SPSnoAckERROR; |
ziqiyap | 2:549bee9a4cd0 | 365 | |
ziqiyap | 2:549bee9a4cd0 | 366 | _i2c.read(SPS30_I2C_ADDR | 1, i2cBuff, 6, false); |
ziqiyap | 2:549bee9a4cd0 | 367 | |
ziqiyap | 2:549bee9a4cd0 | 368 | uint16_t stat = (i2cBuff[0] << 8) | i2cBuff[1]; |
ziqiyap | 2:549bee9a4cd0 | 369 | clean_interval_m = stat; |
ziqiyap | 2:549bee9a4cd0 | 370 | uint8_t dat = sps30::checkCrc2b(stat, i2cBuff[2]); |
ziqiyap | 2:549bee9a4cd0 | 371 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 2:549bee9a4cd0 | 372 | |
ziqiyap | 2:549bee9a4cd0 | 373 | stat = (i2cBuff[3] << 8) | i2cBuff[4]; |
ziqiyap | 2:549bee9a4cd0 | 374 | clean_interval_l = stat; |
ziqiyap | 2:549bee9a4cd0 | 375 | dat = sps30::checkCrc2b(stat, i2cBuff[5]); |
ziqiyap | 2:549bee9a4cd0 | 376 | if(dat == SPScrcERROR) return SPScrcERROR; |
ziqiyap | 2:549bee9a4cd0 | 377 | |
ziqiyap | 2:549bee9a4cd0 | 378 | clean_interval_i = (clean_interval_m << 16) | clean_interval_l; |
ziqiyap | 2:549bee9a4cd0 | 379 | |
ziqiyap | 2:549bee9a4cd0 | 380 | return SPSnoERROR; |
ziqiyap | 2:549bee9a4cd0 | 381 | } |
ziqiyap | 2:549bee9a4cd0 | 382 | |
ziqiyap | 2:549bee9a4cd0 | 383 | //----------------------------------------------------------------------------- |
ziqiyap | 2:549bee9a4cd0 | 384 | // Perform manual fan cleaning |
ziqiyap | 2:549bee9a4cd0 | 385 | |
ziqiyap | 2:549bee9a4cd0 | 386 | uint8_t sps30::startFanClean() |
ziqiyap | 2:549bee9a4cd0 | 387 | { |
ziqiyap | 2:549bee9a4cd0 | 388 | i2cBuff[0] = SPS30_CMMD_START_FAN_CLEAN >> 8; |
ziqiyap | 2:549bee9a4cd0 | 389 | i2cBuff[1] = SPS30_CMMD_START_FAN_CLEAN & 255; |
ziqiyap | 2:549bee9a4cd0 | 390 | int res = _i2c.write(SPS30_I2C_ADDR, i2cBuff, 2, false); |
ziqiyap | 2:549bee9a4cd0 | 391 | if(res) return SPSnoAckERROR; |
ziqiyap | 2:549bee9a4cd0 | 392 | return SPSnoERROR; |
ziqiyap | 2:549bee9a4cd0 | 393 | } |
ziqiyap | 2:549bee9a4cd0 | 394 | |
ziqiyap | 2:549bee9a4cd0 | 395 | //----------------------------------------------------------------------------- |
ziqiyap | 0:9221dac25d3b | 396 | // Perform a soft reset on the SPS30 |
ziqiyap | 0:9221dac25d3b | 397 | |
ziqiyap | 0:9221dac25d3b | 398 | uint8_t sps30::softReset() |
ziqiyap | 0:9221dac25d3b | 399 | { |
ziqiyap | 0:9221dac25d3b | 400 | i2cBuff[0] = SPS30_CMMD_SOFT_RESET >> 8; |
ziqiyap | 0:9221dac25d3b | 401 | i2cBuff[1] = SPS30_CMMD_SOFT_RESET & 255; |
ziqiyap | 0:9221dac25d3b | 402 | int res = _i2c.write(SPS30_I2C_ADDR, i2cBuff, 2, false); |
ziqiyap | 0:9221dac25d3b | 403 | if(res) return SPSnoAckERROR; |
ziqiyap | 0:9221dac25d3b | 404 | return SPSnoERROR; |
ziqiyap | 0:9221dac25d3b | 405 | } |