Diff: main.cpp

Revision:

3:9b47638100af

Parent:

2:d5b23f4e6884

diff -r d5b23f4e6884 -r 9b47638100af main.cpp
--- a/main.cpp	Wed Apr 02 12:26:31 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,43 +0,0 @@
-#include "mbed.h"
-#define PI 3.1415
-
-Timer     t;
-
-AnalogIn   ain_v1(p20); // Input voltage from antenna
-
-
-int main()
-{
-    float v1, m, b, p_in, Pt, Gt, Gr, Pr, f, c, r;
-    
-    t.start();
-    while(t.read()<10.0)
-    {
-    // Voltage to Power calculations
-    v1      = ain_v1;           // ain_v1;   // Comes from mBed (Can adjust manually for now)
-    b       = 2.095;            // (volts) Direct function generator measurement
-    m       = .0316;            // volts/dBm (Calculated at 2000 MHz and 0 and -40 dBm)
-    p_in    = (v1-b)/m;         // Derived from v = m*p+b (linear relationship of voltage and power)
-   
-    // Range equation Terms
-    Pt      = .001;             //(watts or 1mW or 0 dBm) Power Transmitted. This is ~16 dBm (.0398 watts) for an iphone 5
-    Gt      = 1;                // Unitless (1 for FG)                      Shouldn't both of these gains be 'directive' gains, not power gains
-    Gr      = .007;                // (.007) (7 mW) How do we get this? Should be on datasheet... but calc required? 7 milliwatt?
-    Pr      = pow(10, ((p_in-30)/10)); // (watts)
-    
-    // Free Space Loss Terms
-    f       = 2000000000;       // (Hz) This will be constant for a phone... but what to put for the FG
-    c       = 300000000;        // m/s
-    
-    r       = (c*(sqrt(Pt*Gt*Gr)/Pr))/(4*PI*f);
-    
-    //printf("\rRange  (meters) = %.3f\n\r",r);
-    //printf("Power    (watts) = %.4f\n\r",Pr);
-    printf("Voltage into mBed = %.4f\n\r",v1);
-    }
-}
-
-
-
-
-