Diff: main.cpp

Revision:

0:161e2d4d4ef9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jun 21 00:00:47 2019 +0000
@@ -0,0 +1,82 @@
+#include "mbed.h"
+#include "max32630fthr.h"
+#include "USBSerial.h"
+#include "math.h"
+
+MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
+
+// Hardware serial port over DAPLink
+Serial daplink(P2_1, P2_0);
+
+// Virtual serial port over USB
+USBSerial microUSB; 
+I2C i2c(P5_7, P6_0);  //sda,scl
+
+const int Write_Addr = 0x90;                            //Write Addres for Ev Kit per data sheet for temperature sensor
+const int Read_Addr = 0x91;                             //Last bit set to 1 in order to read (not write)
+const int Temperature_Register_Addr = 0x00;             //Address of Register holding Temperature data
+char Configuration_Register_Addr[1];           //Address of Register holding Configuration Settings
+char Configuration_Sleep_Data[1];                 //Initialize Sensor into Sleep mode
+char Configuration_OneShot_Data[1];                  //Send signal for temperature reading, and then device goes back to sleep
+
+int main()
+{
+microUSB.printf("=================STARTING=================\r\n");
+
+
+char data[1];          //Hold Hexidecimal Value
+char bdata [15];        //Hold Binary Value
+microUSB.printf("Program beginingin now\r\n");
+
+Configuration_Register_Addr[0] = 0x01;
+Configuration_Register_Addr[1] = 0x00;
+
+Configuration_Sleep_Data[0] = 0x01;
+Configuration_Sleep_Data[1] = 0x01;
+
+Configuration_OneShot_Data[0] = 0x01;
+Configuration_OneShot_Data[1] = 0x81;
+
+i2c.write(Write_Addr, Configuration_Sleep_Data , 2, false);                    //Set into Sleep Mode
+   
+   
+    while(1){
+        microUSB.printf("Reading initialzing\r\n");
+
+        i2c.write(Write_Addr, Configuration_OneShot_Data , 2, false);                    //Set into Sleep Mode
+        wait_ms(1);
+        
+        i2c.write(Write_Addr, Temperature_Register_Addr , 1, true);                          //Send Address to begin communication, but leave true so we can 
+        i2c.read(Read_Addr, data, 2, false);                               //Read the 2 bytes of temperature info collected by the sensor
+            //for (int i = 0; i<2;i++){
+            //    microUSB.printf("%d   ",data[i]);                //Confirm values are being read from sensor via I2C            
+            //}
+            //microUSB.printf("\r\n");                                                     
+        int count =15;                                              //Loading bits from most significant to least
+        microUSB.printf("Starting Temperature Caluclation\r\n");
+        for (int k = 0; k<2;k++){                                   //Go through both bytes
+        //microUSB.printf("Converting %d from decimal to binary \r\n",data[k]);
+            for (int j = 7;j>=0;j--){
+                int r = data[k]>>j;                                 //Check all 8 bits
+                if(r&1)                                             //Binary 1
+                     bdata[count] = 1;                              //Load 1 into array
+                else                                                //Binary 0
+                     bdata[count] = 0;                              //Load 0 into array
+                count --;                                           //Move to next array position
+            }
+        }
+        double temp = 0;
+        int index = 14;
+        for (float z=6;z>=-8;z--){                                  //Calculate temperature from array holding binary value
+            float factor = pow (2,z);                               //Calculate Added Temperature for each bit (Per data sheet)
+            temp += bdata[index] * factor;                          //Combine all bit temperature to aquire total sum
+            index--;
+        }
+        microUSB.printf("Temperature is %f degrees Celcius\r\n", temp);
+        float fahrenheit = (((temp*9)/5) + 32);                                         //Calculate temperature in F
+        microUSB.printf("Temperature is %f degrees fahrenheit\r\n", fahrenheit);
+        microUSB.printf("Reading Complete\r\n");
+        microUSB.printf("\r\n\n\n\n\n\n");
+        wait(5);                                                   //Sensor measures every 10 seconds
+    }
+}
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