![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
trainning_template
sensors.cpp@6:398753e95e87, 2020-12-01 (annotated)
- Committer:
- brainliang
- Date:
- Tue Dec 01 07:10:01 2020 +0000
- Revision:
- 6:398753e95e87
- Parent:
- 5:7534fc9248a8
trainning_template
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Dennis_Yu | 0:6dca851b4779 | 1 | #include "sensors.h" |
Dennis_Yu | 0:6dca851b4779 | 2 | #include "mbed.h" |
Dennis_Yu | 0:6dca851b4779 | 3 | |
brainliang | 5:7534fc9248a8 | 4 | //extern Serial usb2pc; |
brainliang | 5:7534fc9248a8 | 5 | // extern DigitalOut myled; |
brainliang | 5:7534fc9248a8 | 6 | |
brainliang | 5:7534fc9248a8 | 7 | //==============================================YL-38 |
brainliang | 5:7534fc9248a8 | 8 | YL::YL(PinName dio) |
brainliang | 5:7534fc9248a8 | 9 | : status(false), signal(dio),signallevel(PC_13) |
brainliang | 5:7534fc9248a8 | 10 | { |
brainliang | 5:7534fc9248a8 | 11 | signal.fall(this, &YL::triggered); |
brainliang | 5:7534fc9248a8 | 12 | // usb2pc.printf("YL start!\r\n"); |
brainliang | 5:7534fc9248a8 | 13 | } |
brainliang | 5:7534fc9248a8 | 14 | //-------- |
brainliang | 5:7534fc9248a8 | 15 | YL::YL(PinName dio,PinName aio) |
brainliang | 5:7534fc9248a8 | 16 | : status(false), signal(dio),signallevel(aio) |
brainliang | 5:7534fc9248a8 | 17 | { |
brainliang | 5:7534fc9248a8 | 18 | signal.fall(this, &YL::triggered); |
brainliang | 5:7534fc9248a8 | 19 | // usb2pc.printf("YL start!\r\n"); |
brainliang | 5:7534fc9248a8 | 20 | } |
brainliang | 5:7534fc9248a8 | 21 | //-------- |
brainliang | 5:7534fc9248a8 | 22 | void YL::triggered() //触发中断!! |
brainliang | 5:7534fc9248a8 | 23 | { |
brainliang | 5:7534fc9248a8 | 24 | // usb2pc.printf("YL Triggered!\r\n"); |
brainliang | 5:7534fc9248a8 | 25 | status = true; |
brainliang | 5:7534fc9248a8 | 26 | } |
brainliang | 5:7534fc9248a8 | 27 | //-------- |
brainliang | 5:7534fc9248a8 | 28 | bool YL::operator==(const bool &target) |
brainliang | 5:7534fc9248a8 | 29 | { |
brainliang | 5:7534fc9248a8 | 30 | if(status == target) |
brainliang | 5:7534fc9248a8 | 31 | { |
brainliang | 5:7534fc9248a8 | 32 | return true; |
brainliang | 5:7534fc9248a8 | 33 | } |
brainliang | 5:7534fc9248a8 | 34 | else |
brainliang | 5:7534fc9248a8 | 35 | { |
brainliang | 5:7534fc9248a8 | 36 | return false; |
brainliang | 5:7534fc9248a8 | 37 | } |
brainliang | 5:7534fc9248a8 | 38 | } |
brainliang | 5:7534fc9248a8 | 39 | //-------- |
brainliang | 5:7534fc9248a8 | 40 | float YL::getairdata() |
brainliang | 5:7534fc9248a8 | 41 | { |
brainliang | 5:7534fc9248a8 | 42 | return signallevel.read(); |
brainliang | 5:7534fc9248a8 | 43 | } |
brainliang | 5:7534fc9248a8 | 44 | //----------- |
brainliang | 5:7534fc9248a8 | 45 | void YL::reset() |
brainliang | 5:7534fc9248a8 | 46 | { |
brainliang | 5:7534fc9248a8 | 47 | status = false; |
brainliang | 5:7534fc9248a8 | 48 | } |
brainliang | 5:7534fc9248a8 | 49 | int YL::read() |
brainliang | 5:7534fc9248a8 | 50 | { |
brainliang | 5:7534fc9248a8 | 51 | return signal.read(); |
brainliang | 5:7534fc9248a8 | 52 | } |
brainliang | 5:7534fc9248a8 | 53 | |
brainliang | 5:7534fc9248a8 | 54 | //==============================================MQ-2 |
brainliang | 5:7534fc9248a8 | 55 | mq::mq(PinName dio) |
brainliang | 5:7534fc9248a8 | 56 | : status(false), signal(dio),signallevel(PC_13) |
brainliang | 5:7534fc9248a8 | 57 | { |
brainliang | 5:7534fc9248a8 | 58 | signal.fall(this, &mq::triggered); |
brainliang | 5:7534fc9248a8 | 59 | // usb2pc.printf("mq start!\r\n"); |
brainliang | 5:7534fc9248a8 | 60 | } |
brainliang | 5:7534fc9248a8 | 61 | //-------- |
brainliang | 5:7534fc9248a8 | 62 | mq::mq(PinName dio,PinName aio) |
brainliang | 5:7534fc9248a8 | 63 | : status(false), signal(dio),signallevel(aio) |
brainliang | 5:7534fc9248a8 | 64 | { |
brainliang | 5:7534fc9248a8 | 65 | signal.fall(this, &mq::triggered); |
brainliang | 5:7534fc9248a8 | 66 | // usb2pc.printf("mq start!\r\n"); |
brainliang | 5:7534fc9248a8 | 67 | } |
brainliang | 5:7534fc9248a8 | 68 | //-------- |
brainliang | 5:7534fc9248a8 | 69 | void mq::triggered() //触发中断!! |
brainliang | 5:7534fc9248a8 | 70 | { |
brainliang | 5:7534fc9248a8 | 71 | // usb2pc.printf("mq Triggered!\r\n"); |
brainliang | 5:7534fc9248a8 | 72 | status = true; |
brainliang | 5:7534fc9248a8 | 73 | } |
brainliang | 5:7534fc9248a8 | 74 | //-------- |
brainliang | 5:7534fc9248a8 | 75 | bool mq::operator==(const bool &target) |
brainliang | 5:7534fc9248a8 | 76 | { |
brainliang | 5:7534fc9248a8 | 77 | if(status == target) |
brainliang | 5:7534fc9248a8 | 78 | { |
brainliang | 5:7534fc9248a8 | 79 | return true; |
brainliang | 5:7534fc9248a8 | 80 | } |
brainliang | 5:7534fc9248a8 | 81 | else |
brainliang | 5:7534fc9248a8 | 82 | { |
brainliang | 5:7534fc9248a8 | 83 | return false; |
brainliang | 5:7534fc9248a8 | 84 | } |
brainliang | 5:7534fc9248a8 | 85 | } |
brainliang | 5:7534fc9248a8 | 86 | //-------- |
brainliang | 5:7534fc9248a8 | 87 | float mq::getairdata() |
brainliang | 5:7534fc9248a8 | 88 | { |
brainliang | 5:7534fc9248a8 | 89 | return signallevel.read(); |
brainliang | 5:7534fc9248a8 | 90 | } |
brainliang | 5:7534fc9248a8 | 91 | //----------- |
brainliang | 5:7534fc9248a8 | 92 | void mq::reset() |
brainliang | 5:7534fc9248a8 | 93 | { |
brainliang | 5:7534fc9248a8 | 94 | status = false; |
brainliang | 5:7534fc9248a8 | 95 | } |
brainliang | 5:7534fc9248a8 | 96 | int mq::read() |
brainliang | 5:7534fc9248a8 | 97 | { |
brainliang | 5:7534fc9248a8 | 98 | return signal.read(); |
brainliang | 5:7534fc9248a8 | 99 | } |
brainliang | 5:7534fc9248a8 | 100 | |
brainliang | 5:7534fc9248a8 | 101 | |
brainliang | 5:7534fc9248a8 | 102 | //===========================================DHT11 |
brainliang | 5:7534fc9248a8 | 103 | dht11::dht11(PinName pin) |
brainliang | 5:7534fc9248a8 | 104 | :datapin(pin) |
brainliang | 5:7534fc9248a8 | 105 | { |
brainliang | 5:7534fc9248a8 | 106 | starttime.start(); |
brainliang | 5:7534fc9248a8 | 107 | // usb2pc.printf("dht11 start!\r\n"); |
brainliang | 5:7534fc9248a8 | 108 | } |
brainliang | 5:7534fc9248a8 | 109 | //---------- |
brainliang | 5:7534fc9248a8 | 110 | int dht11::getdata() |
brainliang | 5:7534fc9248a8 | 111 | { |
brainliang | 5:7534fc9248a8 | 112 | int timeout=10000; |
brainliang | 5:7534fc9248a8 | 113 | uint8_t data[5]; |
brainliang | 5:7534fc9248a8 | 114 | uint8_t bit=7; |
brainliang | 5:7534fc9248a8 | 115 | uint8_t count=0; |
brainliang | 5:7534fc9248a8 | 116 | |
brainliang | 5:7534fc9248a8 | 117 | for(int i=0;i<5;i++) |
brainliang | 5:7534fc9248a8 | 118 | { |
brainliang | 5:7534fc9248a8 | 119 | data[i]=0; |
brainliang | 5:7534fc9248a8 | 120 | } |
brainliang | 5:7534fc9248a8 | 121 | if(starttime.read_ms()<1500){while(starttime.read_ms()<1500){}starttime.stop();} |
brainliang | 5:7534fc9248a8 | 122 | |
brainliang | 5:7534fc9248a8 | 123 | datapin.output(); |
brainliang | 5:7534fc9248a8 | 124 | datapin=0; |
brainliang | 5:7534fc9248a8 | 125 | wait_ms(19); |
brainliang | 5:7534fc9248a8 | 126 | datapin=1; |
brainliang | 5:7534fc9248a8 | 127 | wait_us(30); |
brainliang | 5:7534fc9248a8 | 128 | datapin.input(); |
brainliang | 5:7534fc9248a8 | 129 | |
brainliang | 5:7534fc9248a8 | 130 | while(!datapin) |
brainliang | 5:7534fc9248a8 | 131 | { |
brainliang | 5:7534fc9248a8 | 132 | // if(timeout--==0){usb2pc.printf("timeout!no reset\r\n");return 0;} |
brainliang | 5:7534fc9248a8 | 133 | if(timeout--==0){return 0;} |
brainliang | 5:7534fc9248a8 | 134 | } |
brainliang | 5:7534fc9248a8 | 135 | timeout=10000; |
brainliang | 5:7534fc9248a8 | 136 | while(datapin) |
brainliang | 5:7534fc9248a8 | 137 | { |
brainliang | 5:7534fc9248a8 | 138 | // if(timeout--==0){usb2pc.printf("timeout!no respanse\r\n");return 0;} |
brainliang | 5:7534fc9248a8 | 139 | if(timeout--==0){return 0;} |
brainliang | 5:7534fc9248a8 | 140 | } |
brainliang | 5:7534fc9248a8 | 141 | timeout=10000; |
brainliang | 5:7534fc9248a8 | 142 | for(int i=0;i<40;i++) |
brainliang | 5:7534fc9248a8 | 143 | { |
brainliang | 5:7534fc9248a8 | 144 | while(!datapin) |
brainliang | 5:7534fc9248a8 | 145 | { |
brainliang | 5:7534fc9248a8 | 146 | // if(timeout--==0){usb2pc.printf("timeout!\r\n");return 0;} |
brainliang | 5:7534fc9248a8 | 147 | if(timeout--==0){return 0;} |
brainliang | 5:7534fc9248a8 | 148 | } |
brainliang | 5:7534fc9248a8 | 149 | timer.start(); |
brainliang | 5:7534fc9248a8 | 150 | timeout=10000; |
brainliang | 5:7534fc9248a8 | 151 | while(datapin) |
brainliang | 5:7534fc9248a8 | 152 | { |
brainliang | 5:7534fc9248a8 | 153 | // if(timeout--==0){usb2pc.printf("timeout!n\r\n");return 0;} |
brainliang | 5:7534fc9248a8 | 154 | if(timeout--==0){return 0;} |
brainliang | 5:7534fc9248a8 | 155 | } |
brainliang | 5:7534fc9248a8 | 156 | timeout=10000; |
brainliang | 5:7534fc9248a8 | 157 | long t=timer.read_us(); |
brainliang | 5:7534fc9248a8 | 158 | timer.stop(); |
brainliang | 5:7534fc9248a8 | 159 | timer.reset(); |
brainliang | 5:7534fc9248a8 | 160 | |
brainliang | 5:7534fc9248a8 | 161 | if(bit==0) |
brainliang | 5:7534fc9248a8 | 162 | { |
brainliang | 5:7534fc9248a8 | 163 | if(t>40){data[count]|=(1<<bit);} |
brainliang | 5:7534fc9248a8 | 164 | bit=7; |
brainliang | 5:7534fc9248a8 | 165 | count++; |
brainliang | 5:7534fc9248a8 | 166 | } |
brainliang | 5:7534fc9248a8 | 167 | else |
brainliang | 5:7534fc9248a8 | 168 | { |
brainliang | 5:7534fc9248a8 | 169 | if(t>40) |
brainliang | 5:7534fc9248a8 | 170 | { |
brainliang | 5:7534fc9248a8 | 171 | data[count]|=(1<<bit); |
brainliang | 5:7534fc9248a8 | 172 | } |
brainliang | 5:7534fc9248a8 | 173 | bit--; |
brainliang | 5:7534fc9248a8 | 174 | } |
brainliang | 5:7534fc9248a8 | 175 | } |
brainliang | 5:7534fc9248a8 | 176 | datapin=1; |
brainliang | 5:7534fc9248a8 | 177 | if(data[4]==data[0]+data[1]+data[2]+data[3]) |
brainliang | 5:7534fc9248a8 | 178 | { |
brainliang | 5:7534fc9248a8 | 179 | //usb2pc.printf("Humidity (%):%f\r\n",(float)data[0]); |
brainliang | 5:7534fc9248a8 | 180 | //usb2pc.printf("Temperature (oC): %f\r\n",(float)data[2]); |
brainliang | 5:7534fc9248a8 | 181 | H=data[0]+data[1]/10.0; |
brainliang | 5:7534fc9248a8 | 182 | T=data[2]+data[3]/10.0; |
brainliang | 5:7534fc9248a8 | 183 | return 1; |
brainliang | 5:7534fc9248a8 | 184 | } |
brainliang | 5:7534fc9248a8 | 185 | // else{usb2pc.printf("error!\r\ndata0:%d\tdata1:%d\r\ndata2:%d\tdata3:%d\r\ndata4:%d\r\n",(int)data[0],(int)data[1],(int)data[2],(int)data[3],(int)data[4]);return 0;} |
brainliang | 5:7534fc9248a8 | 186 | else{return 0;} |
brainliang | 5:7534fc9248a8 | 187 | } |
brainliang | 5:7534fc9248a8 | 188 | //------- |
brainliang | 5:7534fc9248a8 | 189 | float dht11::gethumidity() |
brainliang | 5:7534fc9248a8 | 190 | { |
brainliang | 6:398753e95e87 | 191 | getdata(); |
brainliang | 5:7534fc9248a8 | 192 | return H; |
brainliang | 5:7534fc9248a8 | 193 | } |
brainliang | 5:7534fc9248a8 | 194 | //------- |
brainliang | 5:7534fc9248a8 | 195 | float dht11::gettemperature() |
brainliang | 5:7534fc9248a8 | 196 | { |
brainliang | 6:398753e95e87 | 197 | getdata(); |
brainliang | 5:7534fc9248a8 | 198 | return T; |
brainliang | 5:7534fc9248a8 | 199 | } |
brainliang | 5:7534fc9248a8 | 200 | |
brainliang | 5:7534fc9248a8 | 201 | |
brainliang | 5:7534fc9248a8 | 202 | |
brainliang | 5:7534fc9248a8 | 203 | |
brainliang | 5:7534fc9248a8 | 204 | |
brainliang | 5:7534fc9248a8 | 205 | |
brainliang | 5:7534fc9248a8 | 206 | |
brainliang | 5:7534fc9248a8 | 207 | |
brainliang | 5:7534fc9248a8 | 208 | |
brainliang | 5:7534fc9248a8 | 209 | |
brainliang | 5:7534fc9248a8 | 210 | |
brainliang | 5:7534fc9248a8 | 211 | |
brainliang | 5:7534fc9248a8 | 212 | |
brainliang | 5:7534fc9248a8 | 213 | |
brainliang | 5:7534fc9248a8 | 214 | |
brainliang | 5:7534fc9248a8 | 215 | |
xmwmx | 4:fe1e9f9c7b33 | 216 | //============================================================SR501 |
xmwmx | 1:1197997ae0ea | 217 | void sr501::triggered() //触发中断!! |
Dennis_Yu | 0:6dca851b4779 | 218 | { |
brainliang | 5:7534fc9248a8 | 219 | // usb2pc.printf("sr501 Triggered!\r\n"); |
Dennis_Yu | 0:6dca851b4779 | 220 | status = true; |
Dennis_Yu | 0:6dca851b4779 | 221 | } |
xmwmx | 1:1197997ae0ea | 222 | //-------- |
xmwmx | 1:1197997ae0ea | 223 | sr501::sr501(PinName pSignal) //启动热释电!!! |
xmwmx | 2:cd0ea77c7d66 | 224 | : status(false), signal(pSignal) |
Dennis_Yu | 0:6dca851b4779 | 225 | { |
xmwmx | 2:cd0ea77c7d66 | 226 | signal.rise(this, &sr501::triggered); |
brainliang | 5:7534fc9248a8 | 227 | // usb2pc.printf("sr501 start!\r\n"); |
Dennis_Yu | 0:6dca851b4779 | 228 | } |
xmwmx | 1:1197997ae0ea | 229 | //------- |
xmwmx | 1:1197997ae0ea | 230 | bool sr501::operator==(const bool &target) |
Dennis_Yu | 0:6dca851b4779 | 231 | { |
Dennis_Yu | 0:6dca851b4779 | 232 | if(status == target) |
xmwmx | 1:1197997ae0ea | 233 | { |
Dennis_Yu | 0:6dca851b4779 | 234 | return true; |
xmwmx | 1:1197997ae0ea | 235 | } |
Dennis_Yu | 0:6dca851b4779 | 236 | else |
xmwmx | 1:1197997ae0ea | 237 | { |
Dennis_Yu | 0:6dca851b4779 | 238 | return false; |
xmwmx | 1:1197997ae0ea | 239 | } |
Dennis_Yu | 0:6dca851b4779 | 240 | } |
xmwmx | 1:1197997ae0ea | 241 | //------- |
Dennis_Yu | 0:6dca851b4779 | 242 | void sr501::reset() |
Dennis_Yu | 0:6dca851b4779 | 243 | { |
Dennis_Yu | 0:6dca851b4779 | 244 | status = false; |
Dennis_Yu | 0:6dca851b4779 | 245 | } |
xmwmx | 1:1197997ae0ea | 246 | //------- |
xmwmx | 1:1197997ae0ea | 247 | int sr501::read() |
xmwmx | 1:1197997ae0ea | 248 | { |
xmwmx | 2:cd0ea77c7d66 | 249 | return signal.read(); |
xmwmx | 1:1197997ae0ea | 250 | } |
xmwmx | 4:fe1e9f9c7b33 | 251 | //========================================== //BH1750 |
xmwmx | 1:1197997ae0ea | 252 | BH1750::BH1750(PinName sda,PinName scl) //启动光强!!!!!(默认设置) |
xmwmx | 1:1197997ae0ea | 253 | :link(sda,scl) |
xmwmx | 1:1197997ae0ea | 254 | { |
xmwmx | 1:1197997ae0ea | 255 | status = true; |
xmwmx | 1:1197997ae0ea | 256 | char mode[1]={BH1750_CONTINUOUS_HIGH_RES_MODE}; |
xmwmx | 2:cd0ea77c7d66 | 257 | //usb2pc.printf("modifying\r\n"); |
xmwmx | 1:1197997ae0ea | 258 | while(status) |
xmwmx | 1:1197997ae0ea | 259 | { |
xmwmx | 1:1197997ae0ea | 260 | status = link.write(BH1750_I2CADDR, mode, sizeof(mode), false); |
xmwmx | 1:1197997ae0ea | 261 | wait_ms(10); |
xmwmx | 1:1197997ae0ea | 262 | } |
brainliang | 5:7534fc9248a8 | 263 | // usb2pc.printf("BH1750 start with default mode!\r\n"); |
xmwmx | 1:1197997ae0ea | 264 | } |
xmwmx | 1:1197997ae0ea | 265 | //-------- |
xmwmx | 1:1197997ae0ea | 266 | BH1750::BH1750(PinName sda,PinName scl,char mode[]) //启动光强!!!!!(自定义设置) |
xmwmx | 1:1197997ae0ea | 267 | :link(sda,scl) |
xmwmx | 1:1197997ae0ea | 268 | { |
xmwmx | 1:1197997ae0ea | 269 | status = true; |
xmwmx | 1:1197997ae0ea | 270 | while(status) |
xmwmx | 1:1197997ae0ea | 271 | { |
xmwmx | 1:1197997ae0ea | 272 | status = link.write(BH1750_I2CADDR, mode, sizeof(mode), false); |
xmwmx | 1:1197997ae0ea | 273 | wait_ms(10); |
xmwmx | 1:1197997ae0ea | 274 | } |
brainliang | 5:7534fc9248a8 | 275 | // usb2pc.printf("BH1750 start with customize mode!\r\n"); |
xmwmx | 1:1197997ae0ea | 276 | } |
xmwmx | 1:1197997ae0ea | 277 | //-------- |
xmwmx | 1:1197997ae0ea | 278 | float BH1750::getlightdata() //读取光强(lux) |
xmwmx | 1:1197997ae0ea | 279 | { |
xmwmx | 1:1197997ae0ea | 280 | status = true; |
xmwmx | 1:1197997ae0ea | 281 | status = link.read(BH1750_I2CADDR, rawdata, 2, false); |
xmwmx | 1:1197997ae0ea | 282 | if(!status) |
xmwmx | 1:1197997ae0ea | 283 | { |
xmwmx | 1:1197997ae0ea | 284 | float result = ((rawdata[0]<<8)|rawdata[1])/1.2; |
xmwmx | 1:1197997ae0ea | 285 | return result; |
xmwmx | 1:1197997ae0ea | 286 | } |
xmwmx | 1:1197997ae0ea | 287 | else |
xmwmx | 1:1197997ae0ea | 288 | { |
brainliang | 5:7534fc9248a8 | 289 | // usb2pc.printf("BH1750 read fail!\r\n"); |
xmwmx | 1:1197997ae0ea | 290 | return -1; |
xmwmx | 1:1197997ae0ea | 291 | } |
xmwmx | 2:cd0ea77c7d66 | 292 | } |
brainliang | 5:7534fc9248a8 | 293 | |
xmwmx | 4:fe1e9f9c7b33 | 294 | //============================================DS18B20 |
xmwmx | 4:fe1e9f9c7b33 | 295 | DS18B20::DS18B20(PinName pin) |
xmwmx | 4:fe1e9f9c7b33 | 296 | :datapin(pin) |
xmwmx | 4:fe1e9f9c7b33 | 297 | { |
brainliang | 5:7534fc9248a8 | 298 | // if(start()){usb2pc.printf("DS18B20 started\r\n");} |
brainliang | 5:7534fc9248a8 | 299 | if(start()){} |
xmwmx | 4:fe1e9f9c7b33 | 300 | } |
xmwmx | 4:fe1e9f9c7b33 | 301 | //----------- |
xmwmx | 4:fe1e9f9c7b33 | 302 | int DS18B20::start() |
xmwmx | 4:fe1e9f9c7b33 | 303 | { |
xmwmx | 4:fe1e9f9c7b33 | 304 | //usb2pc.printf("starting\r\n"); |
xmwmx | 4:fe1e9f9c7b33 | 305 | datapin.output(); |
xmwmx | 4:fe1e9f9c7b33 | 306 | datapin=0; |
xmwmx | 4:fe1e9f9c7b33 | 307 | wait_us(600); |
xmwmx | 4:fe1e9f9c7b33 | 308 | datapin.input(); |
xmwmx | 4:fe1e9f9c7b33 | 309 | datapin.mode(PullUp); |
xmwmx | 4:fe1e9f9c7b33 | 310 | wait_us(70); |
xmwmx | 4:fe1e9f9c7b33 | 311 | while(datapin.read()){return 0;} |
xmwmx | 4:fe1e9f9c7b33 | 312 | //usb2pc.printf("started\r\n"); |
xmwmx | 4:fe1e9f9c7b33 | 313 | wait_us(250); |
xmwmx | 4:fe1e9f9c7b33 | 314 | return 1; |
xmwmx | 4:fe1e9f9c7b33 | 315 | } |
xmwmx | 4:fe1e9f9c7b33 | 316 | //---------- |
xmwmx | 4:fe1e9f9c7b33 | 317 | void DS18B20::writebyte(uint8_t send) |
xmwmx | 4:fe1e9f9c7b33 | 318 | { |
xmwmx | 4:fe1e9f9c7b33 | 319 | datapin.output(); |
xmwmx | 4:fe1e9f9c7b33 | 320 | datapin=1; |
xmwmx | 4:fe1e9f9c7b33 | 321 | wait_us(20); |
xmwmx | 4:fe1e9f9c7b33 | 322 | for(int i=0;i<8;i++) |
xmwmx | 4:fe1e9f9c7b33 | 323 | { |
xmwmx | 4:fe1e9f9c7b33 | 324 | datapin.output(); |
xmwmx | 4:fe1e9f9c7b33 | 325 | datapin=0; //产生读写时序的起始信号 |
xmwmx | 4:fe1e9f9c7b33 | 326 | wait_us(2); //要求至少1us的延时 |
xmwmx | 4:fe1e9f9c7b33 | 327 | datapin=send & 0x01; //对总线赋值,从最低位开始写起 |
xmwmx | 4:fe1e9f9c7b33 | 328 | wait_us(70);//延时70us,写0在60~120us之间释放,写1的话大于60us均可释放 |
xmwmx | 4:fe1e9f9c7b33 | 329 | datapin=1; //释放总线,为下一次mcu送数据做准备, |
xmwmx | 4:fe1e9f9c7b33 | 330 | send>>=1; //有效数据移动到最低位,2次写数据间隙至少需1us |
xmwmx | 4:fe1e9f9c7b33 | 331 | } |
xmwmx | 4:fe1e9f9c7b33 | 332 | datapin.output(); |
xmwmx | 4:fe1e9f9c7b33 | 333 | datapin=1; |
xmwmx | 4:fe1e9f9c7b33 | 334 | wait_us(70); |
xmwmx | 4:fe1e9f9c7b33 | 335 | } |
xmwmx | 4:fe1e9f9c7b33 | 336 | //----------- |
xmwmx | 4:fe1e9f9c7b33 | 337 | uint8_t DS18B20::readByte() //mcu读一个字节 |
xmwmx | 4:fe1e9f9c7b33 | 338 | { |
xmwmx | 4:fe1e9f9c7b33 | 339 | uint8_t i,value=0; |
xmwmx | 4:fe1e9f9c7b33 | 340 | for(i=0;i<8;i++) |
xmwmx | 4:fe1e9f9c7b33 | 341 | { |
xmwmx | 4:fe1e9f9c7b33 | 342 | datapin.output(); |
xmwmx | 4:fe1e9f9c7b33 | 343 | datapin=0; //起始信号 |
xmwmx | 4:fe1e9f9c7b33 | 344 | wait_us(2); |
xmwmx | 4:fe1e9f9c7b33 | 345 | datapin.input(); //mcu释放总线 |
xmwmx | 4:fe1e9f9c7b33 | 346 | datapin.mode(PullUp); |
xmwmx | 4:fe1e9f9c7b33 | 347 | if(datapin) |
xmwmx | 4:fe1e9f9c7b33 | 348 | { |
xmwmx | 4:fe1e9f9c7b33 | 349 | value=value|0x80;//保存高电平数据,低电平的话不用保存,移位后默认是0 |
xmwmx | 4:fe1e9f9c7b33 | 350 | } |
xmwmx | 4:fe1e9f9c7b33 | 351 | value>>=1; |
xmwmx | 4:fe1e9f9c7b33 | 352 | wait_us(30); //延时40us |
xmwmx | 4:fe1e9f9c7b33 | 353 | } |
xmwmx | 4:fe1e9f9c7b33 | 354 | return value; |
xmwmx | 4:fe1e9f9c7b33 | 355 | } |
xmwmx | 4:fe1e9f9c7b33 | 356 | //------------ |
xmwmx | 4:fe1e9f9c7b33 | 357 | float DS18B20::transfer(uint8_t h,uint8_t l) |
xmwmx | 4:fe1e9f9c7b33 | 358 | { |
xmwmx | 4:fe1e9f9c7b33 | 359 | //h=0x01; |
xmwmx | 4:fe1e9f9c7b33 | 360 | //l=0x01; |
xmwmx | 4:fe1e9f9c7b33 | 361 | int flag=(h&0x01)>>7; |
xmwmx | 4:fe1e9f9c7b33 | 362 | if(!flag) |
xmwmx | 4:fe1e9f9c7b33 | 363 | { |
xmwmx | 4:fe1e9f9c7b33 | 364 | float i=(h*256+l)*0.25; |
xmwmx | 4:fe1e9f9c7b33 | 365 | //usb2pc.printf("flag:%d\th:%d\tl:%d\r\n",flag,h,l); |
xmwmx | 4:fe1e9f9c7b33 | 366 | return i; |
xmwmx | 4:fe1e9f9c7b33 | 367 | } |
xmwmx | 4:fe1e9f9c7b33 | 368 | else |
xmwmx | 4:fe1e9f9c7b33 | 369 | { |
xmwmx | 4:fe1e9f9c7b33 | 370 | float i=((~h)*256+(~l))*0.25*-1; |
xmwmx | 4:fe1e9f9c7b33 | 371 | //usb2pc.printf("flag:%d\th:%d\tl:%d\r\n",flag,h,l); |
xmwmx | 4:fe1e9f9c7b33 | 372 | return i; |
xmwmx | 4:fe1e9f9c7b33 | 373 | } |
xmwmx | 4:fe1e9f9c7b33 | 374 | } |
xmwmx | 4:fe1e9f9c7b33 | 375 | //---------- |
xmwmx | 4:fe1e9f9c7b33 | 376 | int DS18B20::getdata() |
xmwmx | 4:fe1e9f9c7b33 | 377 | { |
xmwmx | 4:fe1e9f9c7b33 | 378 | T=5000; |
xmwmx | 4:fe1e9f9c7b33 | 379 | start(); |
xmwmx | 4:fe1e9f9c7b33 | 380 | writebyte(0xcc); |
xmwmx | 4:fe1e9f9c7b33 | 381 | writebyte(0x44); |
xmwmx | 4:fe1e9f9c7b33 | 382 | wait(2); |
xmwmx | 4:fe1e9f9c7b33 | 383 | |
xmwmx | 4:fe1e9f9c7b33 | 384 | start(); |
xmwmx | 4:fe1e9f9c7b33 | 385 | writebyte(0xcc); |
xmwmx | 4:fe1e9f9c7b33 | 386 | writebyte(0xbe); |
xmwmx | 4:fe1e9f9c7b33 | 387 | uint8_t a=readByte();//l |
xmwmx | 4:fe1e9f9c7b33 | 388 | uint8_t b=readByte();//h |
xmwmx | 4:fe1e9f9c7b33 | 389 | T=transfer(b,a); |
xmwmx | 4:fe1e9f9c7b33 | 390 | |
xmwmx | 4:fe1e9f9c7b33 | 391 | if(T==5000){return 0;} |
xmwmx | 4:fe1e9f9c7b33 | 392 | else{return 1;} |
xmwmx | 4:fe1e9f9c7b33 | 393 | } |
xmwmx | 4:fe1e9f9c7b33 | 394 | //---------- |
xmwmx | 4:fe1e9f9c7b33 | 395 | float DS18B20::gettemperature() |
xmwmx | 4:fe1e9f9c7b33 | 396 | { |
xmwmx | 4:fe1e9f9c7b33 | 397 | if(getdata()){return T;} |
brainliang | 5:7534fc9248a8 | 398 | //else{usb2pc.printf("get temperature fail!\r\n");return 0;} |
brainliang | 5:7534fc9248a8 | 399 | else{return 0;} |
xmwmx | 4:fe1e9f9c7b33 | 400 | } |
brainliang | 5:7534fc9248a8 | 401 | // ================================================== |
brainliang | 5:7534fc9248a8 | 402 | |
xmwmx | 4:fe1e9f9c7b33 | 403 | //============================================= |
xmwmx | 4:fe1e9f9c7b33 | 404 | BMP180::BMP180(PinName sda,PinName scl) |
xmwmx | 4:fe1e9f9c7b33 | 405 | :i2c(sda,scl) |
xmwmx | 4:fe1e9f9c7b33 | 406 | { |
xmwmx | 4:fe1e9f9c7b33 | 407 | OSS=OSS_3; |
xmwmx | 4:fe1e9f9c7b33 | 408 | uint8_t c = readByte(BMP180_ADDRESS, BMP180_WHO_AM_I); |
xmwmx | 4:fe1e9f9c7b33 | 409 | if(c == 0x55) { |
xmwmx | 4:fe1e9f9c7b33 | 410 | |
brainliang | 5:7534fc9248a8 | 411 | // usb2pc.printf("BMP-180 is 0x%x\r\n", c); |
brainliang | 5:7534fc9248a8 | 412 | // usb2pc.printf("BMP-180 should be 0x55\r\n"); |
brainliang | 5:7534fc9248a8 | 413 | // usb2pc.printf("BMP-180 online...\r\n"); |
xmwmx | 4:fe1e9f9c7b33 | 414 | |
xmwmx | 4:fe1e9f9c7b33 | 415 | BMP180Calibration(); |
brainliang | 5:7534fc9248a8 | 416 | // usb2pc.printf("BMP-180 calibration complete...\r\n"); |
xmwmx | 4:fe1e9f9c7b33 | 417 | } |
xmwmx | 4:fe1e9f9c7b33 | 418 | else |
xmwmx | 4:fe1e9f9c7b33 | 419 | { |
brainliang | 5:7534fc9248a8 | 420 | // usb2pc.printf("BMP-180 is 0x%x\r\n", c); |
brainliang | 5:7534fc9248a8 | 421 | // usb2pc.printf("BMP-180 should be 0x55\r\n"); |
xmwmx | 4:fe1e9f9c7b33 | 422 | while(1); // idle here forever |
xmwmx | 4:fe1e9f9c7b33 | 423 | } |
xmwmx | 4:fe1e9f9c7b33 | 424 | } |
xmwmx | 4:fe1e9f9c7b33 | 425 | void BMP180::writeByte(uint8_t address, uint8_t subAddress, uint8_t data) |
xmwmx | 4:fe1e9f9c7b33 | 426 | { |
xmwmx | 4:fe1e9f9c7b33 | 427 | char data_write[2]; |
xmwmx | 4:fe1e9f9c7b33 | 428 | data_write[0] = subAddress; |
xmwmx | 4:fe1e9f9c7b33 | 429 | data_write[1] = data; |
xmwmx | 4:fe1e9f9c7b33 | 430 | i2c.write(address, data_write, 2, 0); |
xmwmx | 4:fe1e9f9c7b33 | 431 | } |
xmwmx | 4:fe1e9f9c7b33 | 432 | |
xmwmx | 4:fe1e9f9c7b33 | 433 | char BMP180::readByte(uint8_t address, uint8_t subAddress) |
xmwmx | 4:fe1e9f9c7b33 | 434 | { |
xmwmx | 4:fe1e9f9c7b33 | 435 | char data[1]; // `data` will store the register data |
xmwmx | 4:fe1e9f9c7b33 | 436 | char data_write[1]; |
xmwmx | 4:fe1e9f9c7b33 | 437 | data_write[0] = subAddress; |
xmwmx | 4:fe1e9f9c7b33 | 438 | i2c.write(address, data_write, 1, 1); // no stop |
xmwmx | 4:fe1e9f9c7b33 | 439 | i2c.read(address, data, 1, 0); |
xmwmx | 4:fe1e9f9c7b33 | 440 | return data[0]; |
xmwmx | 4:fe1e9f9c7b33 | 441 | } |
xmwmx | 4:fe1e9f9c7b33 | 442 | |
xmwmx | 4:fe1e9f9c7b33 | 443 | void BMP180::readBytes(uint8_t address, uint8_t subAddress, uint8_t count, uint8_t * dest) |
xmwmx | 4:fe1e9f9c7b33 | 444 | { |
xmwmx | 4:fe1e9f9c7b33 | 445 | char data[14]; |
xmwmx | 4:fe1e9f9c7b33 | 446 | char data_write[1]; |
xmwmx | 4:fe1e9f9c7b33 | 447 | data_write[0] = subAddress; |
xmwmx | 4:fe1e9f9c7b33 | 448 | i2c.write(address, data_write, 1, 1); // no stop |
xmwmx | 4:fe1e9f9c7b33 | 449 | i2c.read(address, data, count, 0); |
xmwmx | 4:fe1e9f9c7b33 | 450 | for(int ii = 0; ii < count; ii++) { |
xmwmx | 4:fe1e9f9c7b33 | 451 | dest[ii] = data[ii]; |
xmwmx | 4:fe1e9f9c7b33 | 452 | } |
xmwmx | 4:fe1e9f9c7b33 | 453 | } |
xmwmx | 4:fe1e9f9c7b33 | 454 | |
xmwmx | 4:fe1e9f9c7b33 | 455 | |
xmwmx | 4:fe1e9f9c7b33 | 456 | // Stores all of the BMP180's calibration values into global variables |
xmwmx | 4:fe1e9f9c7b33 | 457 | // Calibration values are required to calculate temp and pressure |
xmwmx | 4:fe1e9f9c7b33 | 458 | // This function should be called at the beginning of the program |
xmwmx | 4:fe1e9f9c7b33 | 459 | // These BMP-180 functions were adapted from Jim Lindblom of SparkFun Electronics |
xmwmx | 4:fe1e9f9c7b33 | 460 | void BMP180::BMP180Calibration() |
xmwmx | 4:fe1e9f9c7b33 | 461 | { |
xmwmx | 4:fe1e9f9c7b33 | 462 | ac1 = readByte(BMP180_ADDRESS, 0xAA) << 8 | readByte(BMP180_ADDRESS, 0xAB); |
xmwmx | 4:fe1e9f9c7b33 | 463 | ac2 = readByte(BMP180_ADDRESS, 0xAC) << 8 | readByte(BMP180_ADDRESS, 0xAD); |
xmwmx | 4:fe1e9f9c7b33 | 464 | ac3 = readByte(BMP180_ADDRESS, 0xAE) << 8 | readByte(BMP180_ADDRESS, 0xAF); |
xmwmx | 4:fe1e9f9c7b33 | 465 | ac4 = readByte(BMP180_ADDRESS, 0xB0) << 8 | readByte(BMP180_ADDRESS, 0xB1); |
xmwmx | 4:fe1e9f9c7b33 | 466 | ac5 = readByte(BMP180_ADDRESS, 0xB2) << 8 | readByte(BMP180_ADDRESS, 0xB3); |
xmwmx | 4:fe1e9f9c7b33 | 467 | ac6 = readByte(BMP180_ADDRESS, 0xB4) << 8 | readByte(BMP180_ADDRESS, 0xB5); |
xmwmx | 4:fe1e9f9c7b33 | 468 | b1 = readByte(BMP180_ADDRESS, 0xB6) << 8 | readByte(BMP180_ADDRESS, 0xB7); |
xmwmx | 4:fe1e9f9c7b33 | 469 | b2 = readByte(BMP180_ADDRESS, 0xB8) << 8 | readByte(BMP180_ADDRESS, 0xB9); |
xmwmx | 4:fe1e9f9c7b33 | 470 | mb = readByte(BMP180_ADDRESS, 0xBA) << 8 | readByte(BMP180_ADDRESS, 0xBB); |
xmwmx | 4:fe1e9f9c7b33 | 471 | mc = readByte(BMP180_ADDRESS, 0xBC) << 8 | readByte(BMP180_ADDRESS, 0xBD); |
xmwmx | 4:fe1e9f9c7b33 | 472 | md = readByte(BMP180_ADDRESS, 0xBE) << 8 | readByte(BMP180_ADDRESS, 0xBF); |
xmwmx | 4:fe1e9f9c7b33 | 473 | } |
xmwmx | 4:fe1e9f9c7b33 | 474 | |
xmwmx | 4:fe1e9f9c7b33 | 475 | // Temperature returned will be in units of 0.1 deg C |
xmwmx | 4:fe1e9f9c7b33 | 476 | long BMP180::BMP180GetTemperature() |
xmwmx | 4:fe1e9f9c7b33 | 477 | { |
xmwmx | 4:fe1e9f9c7b33 | 478 | long ut = 0; |
xmwmx | 4:fe1e9f9c7b33 | 479 | uint8_t rawData[2] = {0, 0}; |
xmwmx | 4:fe1e9f9c7b33 | 480 | |
xmwmx | 4:fe1e9f9c7b33 | 481 | writeByte(BMP180_ADDRESS, 0xF4, 0x2E); // start temperature measurement |
xmwmx | 4:fe1e9f9c7b33 | 482 | wait_ms(5); |
xmwmx | 4:fe1e9f9c7b33 | 483 | readBytes(BMP180_ADDRESS, 0xF6, 2, &rawData[0]); // read raw temperature measurement |
xmwmx | 4:fe1e9f9c7b33 | 484 | ut = rawData[0]*256+ rawData[1]; |
xmwmx | 4:fe1e9f9c7b33 | 485 | |
xmwmx | 4:fe1e9f9c7b33 | 486 | long x1, x2; |
xmwmx | 4:fe1e9f9c7b33 | 487 | |
xmwmx | 4:fe1e9f9c7b33 | 488 | x1 = (((long)ut - (long)ac6)*(long)ac5) >> 15; |
xmwmx | 4:fe1e9f9c7b33 | 489 | x2 = ((long)mc << 11)/(x1 + md); |
xmwmx | 4:fe1e9f9c7b33 | 490 | b5 = x1 + x2; |
xmwmx | 4:fe1e9f9c7b33 | 491 | |
xmwmx | 4:fe1e9f9c7b33 | 492 | return ((b5 + 8)>>4)/10.0; |
xmwmx | 4:fe1e9f9c7b33 | 493 | } |
xmwmx | 4:fe1e9f9c7b33 | 494 | |
xmwmx | 4:fe1e9f9c7b33 | 495 | // Calculate pressure read calibration values |
xmwmx | 4:fe1e9f9c7b33 | 496 | // b5 is also required so BMP180GetTemperature() must be called first. |
xmwmx | 4:fe1e9f9c7b33 | 497 | // Value returned will be pressure in units of Pa. |
xmwmx | 4:fe1e9f9c7b33 | 498 | long BMP180::BMP180GetPressure() |
xmwmx | 4:fe1e9f9c7b33 | 499 | { |
xmwmx | 4:fe1e9f9c7b33 | 500 | long up = 0; |
xmwmx | 4:fe1e9f9c7b33 | 501 | writeByte(BMP180_ADDRESS, 0xF4, 0x34 | OSS << 6); // Configure pressure measurement for highest resolution |
xmwmx | 4:fe1e9f9c7b33 | 502 | wait_ms(5+8*OSS); // delay 5 ms at lowest resolution, 29 ms at highest |
xmwmx | 4:fe1e9f9c7b33 | 503 | uint8_t rawData[3] = {0, 0, 0}; |
xmwmx | 4:fe1e9f9c7b33 | 504 | readBytes(BMP180_ADDRESS, 0xF6, 3, &rawData[0]); // read raw pressure measurement of 19 bits |
xmwmx | 4:fe1e9f9c7b33 | 505 | up = (((long) rawData[0] << 16) | ((long)rawData[1] << 8) | rawData[2]) >> (8 - OSS); |
xmwmx | 4:fe1e9f9c7b33 | 506 | |
xmwmx | 4:fe1e9f9c7b33 | 507 | long x1, x2, x3, b3, b6, p; |
xmwmx | 4:fe1e9f9c7b33 | 508 | unsigned long b4, b7; |
xmwmx | 4:fe1e9f9c7b33 | 509 | |
xmwmx | 4:fe1e9f9c7b33 | 510 | b6 = b5 - 4000; |
xmwmx | 4:fe1e9f9c7b33 | 511 | // Calculate B3 |
xmwmx | 4:fe1e9f9c7b33 | 512 | x1 = (b2 * (b6 * b6)>>12)>>11; |
xmwmx | 4:fe1e9f9c7b33 | 513 | x2 = (ac2 * b6)>>11; |
xmwmx | 4:fe1e9f9c7b33 | 514 | x3 = x1 + x2; |
xmwmx | 4:fe1e9f9c7b33 | 515 | b3 = (((((long)ac1)*4 + x3)<<OSS) + 2)>>2; |
xmwmx | 4:fe1e9f9c7b33 | 516 | |
xmwmx | 4:fe1e9f9c7b33 | 517 | // Calculate B4 |
xmwmx | 4:fe1e9f9c7b33 | 518 | x1 = (ac3 * b6)>>13; |
xmwmx | 4:fe1e9f9c7b33 | 519 | x2 = (b1 * ((b6 * b6)>>12))>>16; |
xmwmx | 4:fe1e9f9c7b33 | 520 | x3 = ((x1 + x2) + 2)>>2; |
xmwmx | 4:fe1e9f9c7b33 | 521 | b4 = (ac4 * (unsigned long)(x3 + 32768))>>15; |
xmwmx | 4:fe1e9f9c7b33 | 522 | |
xmwmx | 4:fe1e9f9c7b33 | 523 | b7 = ((unsigned long)(up - b3) * (50000>>OSS)); |
xmwmx | 4:fe1e9f9c7b33 | 524 | if (b7 < 0x80000000) |
xmwmx | 4:fe1e9f9c7b33 | 525 | p = (b7<<1)/b4; |
xmwmx | 4:fe1e9f9c7b33 | 526 | else |
xmwmx | 4:fe1e9f9c7b33 | 527 | p = (b7/b4)<<1; |
xmwmx | 4:fe1e9f9c7b33 | 528 | |
xmwmx | 4:fe1e9f9c7b33 | 529 | x1 = (p>>8) * (p>>8); |
xmwmx | 4:fe1e9f9c7b33 | 530 | x1 = (x1 * 3038)>>16; |
xmwmx | 4:fe1e9f9c7b33 | 531 | x2 = (-7357 * p)>>16; |
xmwmx | 4:fe1e9f9c7b33 | 532 | p += (x1 + x2 + 3791)>>4; |
xmwmx | 4:fe1e9f9c7b33 | 533 | |
xmwmx | 4:fe1e9f9c7b33 | 534 | return p; |
xmwmx | 4:fe1e9f9c7b33 | 535 | } |
xmwmx | 4:fe1e9f9c7b33 | 536 | //=============================== |
xmwmx | 4:fe1e9f9c7b33 | 537 | GP2Y1010::GP2Y1010(PinName led,PinName measure) |
xmwmx | 4:fe1e9f9c7b33 | 538 | :measurePin(measure),ledPower(led) |
xmwmx | 4:fe1e9f9c7b33 | 539 | { |
xmwmx | 4:fe1e9f9c7b33 | 540 | samplingTime = 280; |
xmwmx | 4:fe1e9f9c7b33 | 541 | deltaTime = 40; |
xmwmx | 4:fe1e9f9c7b33 | 542 | sleepTime = 9680; |
xmwmx | 4:fe1e9f9c7b33 | 543 | |
xmwmx | 4:fe1e9f9c7b33 | 544 | voMeasured = 0; |
xmwmx | 4:fe1e9f9c7b33 | 545 | calcVoltage = 0; |
xmwmx | 4:fe1e9f9c7b33 | 546 | dustDensity = 0; |
xmwmx | 4:fe1e9f9c7b33 | 547 | } |
xmwmx | 4:fe1e9f9c7b33 | 548 | |
xmwmx | 4:fe1e9f9c7b33 | 549 | float GP2Y1010::getairdata() |
xmwmx | 4:fe1e9f9c7b33 | 550 | { |
xmwmx | 4:fe1e9f9c7b33 | 551 | ledPower=1; |
xmwmx | 4:fe1e9f9c7b33 | 552 | |
xmwmx | 4:fe1e9f9c7b33 | 553 | wait_us(samplingTime); |
xmwmx | 4:fe1e9f9c7b33 | 554 | |
xmwmx | 4:fe1e9f9c7b33 | 555 | voMeasured = measurePin.read(); |
xmwmx | 4:fe1e9f9c7b33 | 556 | |
xmwmx | 4:fe1e9f9c7b33 | 557 | wait_us(deltaTime); |
xmwmx | 4:fe1e9f9c7b33 | 558 | ledPower=0; |
xmwmx | 4:fe1e9f9c7b33 | 559 | wait_us(sleepTime); |
xmwmx | 4:fe1e9f9c7b33 | 560 | |
xmwmx | 4:fe1e9f9c7b33 | 561 | calcVoltage = voMeasured*5.0; |
xmwmx | 4:fe1e9f9c7b33 | 562 | dustDensity = 0.17*calcVoltage-0.1; |
xmwmx | 4:fe1e9f9c7b33 | 563 | |
xmwmx | 4:fe1e9f9c7b33 | 564 | if ( dustDensity < 0) |
xmwmx | 4:fe1e9f9c7b33 | 565 | { |
xmwmx | 4:fe1e9f9c7b33 | 566 | dustDensity = 0.00; |
xmwmx | 4:fe1e9f9c7b33 | 567 | } |
xmwmx | 4:fe1e9f9c7b33 | 568 | return dustDensity ; |
xmwmx | 4:fe1e9f9c7b33 | 569 | } |