CPS-Lab
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Lab7
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main.cpp
00001 /* 00002 * ENGR E 210 - CYBER PHYSICAL SYSTEMS (DIGITAL SYSTEMS) 00003 * LAB 7 - ELEVATOR ALTIMETER 00004 * CODE BY KRISH HEMANT MHATRE AND ETHAN ZHANG 00005 */ 00006 00007 #include "mbed.h" 00008 #include "MPL3115A2.h" 00009 00010 Serial pc(SERIAL_TX, SERIAL_RX); 00011 DigitalOut myled(LED1); 00012 00013 // Selects SDA as I2C1_SDA on pin PB_7 00014 // Selects SCL on I2C1_SCL on pin PB_6 00015 // The I2C address of the pressure sensor is fixed at 0x60. 00016 MPL3115A2 pressure_sensor(PB_7,PB_6,0x60); 00017 int mpl3115_reg_print(int start, int length); 00018 00019 int main() { 00020 uint8_t id; 00021 pc.printf("\n\r*** MPL3115A2 Pressure/Temperature Sensor Test *** \n\r"); 00022 while ((id=pressure_sensor.getID())!=0xC4) { 00023 pc.printf("Status read unsuccessful: Value = 0x%02x\n\r",id); 00024 pc.printf("Check wiring to the pressure sensor\n\r",id); 00025 pc.printf("Retesting for correct ID in 1 second...\n\r"); 00026 wait(1); 00027 } 00028 pc.printf("Status read successfully: Value = 0x%02x\n\r",id); 00029 pc.printf("***1hz readings from the pressure sensor***\n\r"); 00030 while(1) 00031 { 00032 float distanceA = pressure_sensor.getAltitude(); 00033 wait(1); 00034 myled = 1; 00035 float distanceB = pressure_sensor.getAltitude(); 00036 float velocity; 00037 if(distanceA>distanceB) 00038 { 00039 velocity = distanceA-distanceB; 00040 } 00041 else 00042 { 00043 velocity = distanceB-distanceA; 00044 } 00045 pc.printf("Velocity = %f m/s\n\r", velocity); 00046 pc.printf("TEMPERATURE = %2.2f C PRESSURE = %2.2f hPa\n\r", pressure_sensor.getTemperature(), pressure_sensor.getPressure()); 00047 myled = 0; 00048 wait(1); 00049 } 00050 00051 00052 //int I = mpl3115_reg_print(0, 50); 00053 } 00054 00055 00056 int mpl3115_reg_print(int start, int length) { 00057 int return_value = 0; 00058 char *text = " "; 00059 uint8_t value; 00060 int address; 00061 if(start < 0x00 || start > 0x2E) 00062 { 00063 return_value = -1; 00064 exit(0); 00065 } 00066 else 00067 { 00068 int i = start; 00069 for(i = start; i < length; i++) 00070 { 00071 address = i; 00072 if(i == 0) 00073 { 00074 text = "STATUS"; 00075 pressure_sensor.readRegs(address, &value, 8); 00076 } 00077 else if(i == 1) 00078 { 00079 text = "OUT_P_MSB"; 00080 pressure_sensor.readRegs(address, &value, 8); 00081 } 00082 else if(i == 2) 00083 { 00084 text = "OUT_P_CSB"; 00085 pressure_sensor.readRegs(address, &value, 8); 00086 } 00087 else if(i == 3) 00088 { 00089 text = "OUT_P_LSB"; 00090 pressure_sensor.readRegs(address, &value, 8); 00091 } 00092 else if(i == 4) 00093 { 00094 text = "OUT_T_MSB"; 00095 pressure_sensor.readRegs(address, &value, 8); 00096 } 00097 else if(i == 5) 00098 { 00099 text = "OUT_T_LSB"; 00100 pressure_sensor.readRegs(address, &value, 8); 00101 } 00102 else if(i == 6) 00103 { 00104 text = "DR_STATUS"; 00105 pressure_sensor.readRegs(address, &value, 8); 00106 } 00107 else if(i == 7) 00108 { 00109 text = "OUT_P_DELTA_MSB"; 00110 pressure_sensor.readRegs(address, &value, 8); 00111 } 00112 else if(i == 8) 00113 { 00114 text = "OUT_P_DELTA_CSB"; 00115 pressure_sensor.readRegs(address, &value, 8); 00116 } 00117 else if(i == 9) 00118 { 00119 text = "OUT_P_DELTA_LSB"; 00120 pressure_sensor.readRegs(address, &value, 8); 00121 } 00122 else if(i == 10) 00123 { 00124 text = "OUT_T_DLETA_MSB"; 00125 pressure_sensor.readRegs(address, &value, 8); 00126 } 00127 else if(i == 11) 00128 { 00129 text = "OUT_T_DELTA_LSB"; 00130 pressure_sensor.readRegs(address, &value, 8); 00131 } 00132 else if(i == 12) 00133 { 00134 text = "WHO_AM_I"; 00135 pressure_sensor.readRegs(address, &value, 8); 00136 } 00137 else if(i == 13) 00138 { 00139 text = "F_STATUS"; 00140 pressure_sensor.readRegs(address, &value, 8); 00141 } 00142 else if(i == 14) 00143 { 00144 text = "F_DATA"; 00145 pressure_sensor.readRegs(address, &value, 8); 00146 } 00147 else if(i == 15) 00148 { 00149 text = "F_SETUP"; 00150 pressure_sensor.readRegs(address, &value, 8); 00151 } 00152 else if(i == 16) 00153 { 00154 text = "TIME_DLY"; 00155 pressure_sensor.readRegs(address, &value, 8); 00156 } 00157 else if(i == 17) 00158 { 00159 text = "SYSMOD"; 00160 pressure_sensor.readRegs(address, &value, 8); 00161 } 00162 else if(i == 18) 00163 { 00164 text = "INT_SOURCE"; 00165 pressure_sensor.readRegs(address, &value, 8); 00166 } 00167 else if(i == 19) 00168 { 00169 text = "PT_DATA_CFG"; 00170 pressure_sensor.readRegs(address, &value, 8); 00171 } 00172 else if(i == 20) 00173 { 00174 text = "BAR_IN_MSB"; 00175 pressure_sensor.readRegs(address, &value, 8); 00176 } 00177 else if(i == 21) 00178 { 00179 text = "BAR_IN_LSB"; 00180 pressure_sensor.readRegs(address, &value, 8); 00181 } 00182 else if(i == 22) 00183 { 00184 text = "P_TGT_MSB"; 00185 pressure_sensor.readRegs(address, &value, 8); 00186 } 00187 else if(i == 23) 00188 { 00189 text = "P_TGT_LSB"; 00190 pressure_sensor.readRegs(address, &value, 8); 00191 } 00192 else if(i == 24) 00193 { 00194 text = "T_TGT"; 00195 pressure_sensor.readRegs(address, &value, 8); 00196 } 00197 else if(i == 25) 00198 { 00199 text = "P_WND_MSB"; 00200 pressure_sensor.readRegs(address, &value, 8); 00201 } 00202 else if(i == 26) 00203 { 00204 text = "P_WND_LSB"; 00205 pressure_sensor.readRegs(address, &value, 8); 00206 } 00207 else if(i == 27) 00208 { 00209 text = "T_WND"; 00210 pressure_sensor.readRegs(address, &value, 8); 00211 } 00212 else if(i == 28) 00213 { 00214 text = "P_MIN_MSB"; 00215 pressure_sensor.readRegs(address, &value, 8); 00216 } 00217 else if(i == 29) 00218 { 00219 text = "P_MIN_CSB"; 00220 pressure_sensor.readRegs(address, &value, 8); 00221 } 00222 else if(i == 30) 00223 { 00224 text = "P_MIN_MSB"; 00225 pressure_sensor.readRegs(address, &value, 8); 00226 } 00227 else if(i == 31) 00228 { 00229 text = "T_MIN_MSB"; 00230 pressure_sensor.readRegs(address, &value, 8); 00231 } 00232 else if(i == 32) 00233 { 00234 text = "T_MIN_LSB"; 00235 pressure_sensor.readRegs(address, &value, 8); 00236 } 00237 else if(i == 33) 00238 { 00239 text = "P_MAX_MSB"; 00240 pressure_sensor.readRegs(address, &value, 8); 00241 } 00242 else if(i == 34) 00243 { 00244 text = "P_MAX_CSB"; 00245 pressure_sensor.readRegs(address, &value, 8); 00246 } 00247 else if(i == 35) 00248 { 00249 text = "P_MAX_MSB"; 00250 pressure_sensor.readRegs(address, &value, 8); 00251 } 00252 else if(i == 36) 00253 { 00254 text = "T_MAX_MSB"; 00255 pressure_sensor.readRegs(address, &value, 8); 00256 } 00257 else if(i == 37) 00258 { 00259 text = "T_MAX_LSB"; 00260 pressure_sensor.readRegs(address, &value, 8); 00261 } 00262 else if(i == 38) 00263 { 00264 text = "CTRL_REG1"; 00265 pressure_sensor.readRegs(address, &value, 8); 00266 } 00267 else if(i == 39) 00268 { 00269 text = "CTRL_REG2"; 00270 pressure_sensor.readRegs(address, &value, 8); 00271 } 00272 else if(i == 40) 00273 { 00274 text = "CTRL_REG3"; 00275 pressure_sensor.readRegs(address, &value, 8); 00276 } 00277 else if(i == 41) 00278 { 00279 text = "CTRL_REG4"; 00280 pressure_sensor.readRegs(address, &value, 8); 00281 } 00282 else if(i == 42) 00283 { 00284 text = "CTRL_REG5"; 00285 pressure_sensor.readRegs(address, &value, 8); 00286 } 00287 else if(i == 43) 00288 { 00289 text = "OFF_P"; 00290 pressure_sensor.readRegs(address, &value, 8); 00291 } 00292 else if(i == 44) 00293 { 00294 text = "OFF_T"; 00295 pressure_sensor.readRegs(address, &value, 8); 00296 } 00297 else if(i == 45) 00298 { 00299 text = "OFF_H"; 00300 pressure_sensor.readRegs(address, &value, 8); 00301 } 00302 else 00303 { 00304 text = "NULL"; 00305 value = NULL; 00306 00307 } 00308 00309 if(i <= 46 && text != "NULL") 00310 { 00311 printf("0x%2.2hhX: %s=0x%2.2hhX \n\r", address, text, value); 00312 } 00313 } 00314 } 00315 return return_value; 00316 } 00317
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