Diff: main.cpp

Revision:

0:a67807d31892

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Mar 10 01:40:42 2018 +0000
@@ -0,0 +1,317 @@
+/* 
+ * ENGR E 210 - CYBER PHYSICAL SYSTEMS (DIGITAL SYSTEMS)
+ * LAB 7 - ELEVATOR ALTIMETER
+ * CODE BY KRISH HEMANT MHATRE AND ETHAN ZHANG
+ */
+
+#include "mbed.h"
+#include "MPL3115A2.h"
+
+Serial pc(SERIAL_TX, SERIAL_RX);
+DigitalOut myled(LED1);
+
+// Selects SDA as I2C1_SDA on pin PB_7
+// Selects SCL on I2C1_SCL on pin PB_6
+// The I2C address of the pressure sensor is fixed at 0x60. 
+MPL3115A2 pressure_sensor(PB_7,PB_6,0x60);
+int mpl3115_reg_print(int start, int length);
+
+int main() {
+    uint8_t id;
+    pc.printf("\n\r*** MPL3115A2 Pressure/Temperature Sensor Test *** \n\r");
+    while ((id=pressure_sensor.getID())!=0xC4) {
+        pc.printf("Status read unsuccessful: Value = 0x%02x\n\r",id);
+        pc.printf("Check wiring to the pressure sensor\n\r",id);
+        pc.printf("Retesting for correct ID in 1 second...\n\r");
+        wait(1);
+    }
+    pc.printf("Status read successfully: Value = 0x%02x\n\r",id);
+    pc.printf("***1hz readings from the pressure sensor***\n\r");
+    while(1) 
+    {
+        float distanceA = pressure_sensor.getAltitude();
+        wait(1);
+        myled = 1;
+        float distanceB = pressure_sensor.getAltitude();
+        float velocity;
+        if(distanceA>distanceB)
+        {
+           velocity = distanceA-distanceB;
+        }
+        else
+        {
+           velocity = distanceB-distanceA;
+        }
+        pc.printf("Velocity = %f m/s\n\r", velocity);
+        pc.printf("TEMPERATURE = %2.2f C     PRESSURE = %2.2f hPa\n\r", pressure_sensor.getTemperature(), pressure_sensor.getPressure());
+        myled = 0;
+        wait(1);
+    }
+    
+    
+    //int I = mpl3115_reg_print(0, 50);
+}
+
+
+int mpl3115_reg_print(int start, int length) {
+    int return_value = 0;
+    char *text = "                                  ";
+    uint8_t value;
+    int address;
+    if(start < 0x00 || start > 0x2E)
+    {
+        return_value = -1;  
+        exit(0); 
+    } 
+    else
+    {
+    int i = start;
+    for(i = start; i < length; i++) 
+    {
+        address = i;
+        if(i == 0)
+        {
+            text = "STATUS";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 1)
+        {
+            text = "OUT_P_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 2)
+        {
+            text = "OUT_P_CSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 3)
+        {
+            text = "OUT_P_LSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 4)
+        {
+            text = "OUT_T_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 5)
+        {
+            text = "OUT_T_LSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 6)
+        {
+            text = "DR_STATUS";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 7)
+        {
+            text = "OUT_P_DELTA_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 8)
+        {
+            text = "OUT_P_DELTA_CSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 9)
+        {
+            text = "OUT_P_DELTA_LSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 10)
+        {
+            text = "OUT_T_DLETA_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 11)
+        {
+            text = "OUT_T_DELTA_LSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 12)
+        {
+            text = "WHO_AM_I";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 13)
+        {
+            text = "F_STATUS";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 14)
+        {
+            text = "F_DATA";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 15)
+        {
+            text = "F_SETUP";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 16)
+        {
+            text = "TIME_DLY";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 17)
+        {
+            text = "SYSMOD";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 18)
+        {
+            text = "INT_SOURCE";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 19)
+        {
+            text = "PT_DATA_CFG";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 20)
+        {
+            text = "BAR_IN_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 21)
+        {
+            text = "BAR_IN_LSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 22)
+        {
+            text = "P_TGT_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 23)
+        {
+            text = "P_TGT_LSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 24)
+        {
+            text = "T_TGT";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 25)
+        {
+            text = "P_WND_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 26)
+        {
+            text = "P_WND_LSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 27)
+        {
+            text = "T_WND";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 28)
+        {
+            text = "P_MIN_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 29)
+        {
+            text = "P_MIN_CSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 30)
+        {
+            text = "P_MIN_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 31)
+        {
+            text = "T_MIN_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 32)
+        {
+            text = "T_MIN_LSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 33)
+        {
+            text = "P_MAX_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 34)
+        {
+            text = "P_MAX_CSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 35)
+        {
+            text = "P_MAX_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 36)
+        {
+            text = "T_MAX_MSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 37)
+        {
+            text = "T_MAX_LSB";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+       else if(i == 38)
+        {
+            text = "CTRL_REG1";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 39)
+        {
+            text = "CTRL_REG2";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 40)
+        {
+            text = "CTRL_REG3";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 41)
+        {
+            text = "CTRL_REG4";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 42)
+        {
+            text = "CTRL_REG5";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 43)
+        {
+            text = "OFF_P";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 44)
+        {
+            text = "OFF_T";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else if(i == 45)
+        {
+            text = "OFF_H";   
+            pressure_sensor.readRegs(address, &value, 8);
+        }
+        else
+        {
+            text = "NULL";
+            value = NULL;
+            
+        }
+        
+        if(i <= 46 && text != "NULL")
+        {
+           printf("0x%2.2hhX: %s=0x%2.2hhX \n\r", address, text, value);
+        }
+    }
+ }   
+    return return_value;
+}
+