/* 
	ARSP -- Altimeter Radar Sensor Processing (P-Spec 2.1.2)

  Programmer Name - ***************
  Data - 11/16/00
  Group - 20

  Reference - Guidance and Control Software Development Specification
              Version 2.3 with Formal Modifications 2.3-1 through 
	      2.3-7; Withers and Becher

  Purpose - The vehicle has one altimeter radar.  The ARSP functional
            unit reads the altimeter counter provided by this radar 
	    and converts the data into a measure of distance to the
	    surface.

            Variable    Data Store   Data type            Range
  Inputs -  ar_alitude	     so  	double		[0, 2000]
            ar_frequency     rp 	double		[1, 2.45*10^9]
	    k_alt	     gs         long		[0, 1]
	    ar_counter	     ex 	short		[-1, (2^15)-1]
	    ar_status	     gs  	char		[0:healthy, 1:failed]

  Outputs - ar_altitude
            k_alt
	    ar_status

  Process - The processing of the altimeter counter data (ar_counter)
            into the vehicle's altitude above the planet's terrain
	    depends on wether or not an echo is recieved by the 
	    current time step.  The distance covered by the radio 
	    pulses emitted from the altimeter radar is directly
	    proportional to the time between transmission and 
	    reception of its echo.  A digital counter (ar_counter) is
	    started as the radar pulse is transmitted.  The counter
	    increments ar_frequency times per second.  If an echo is
	    received, the lower order fifteen bits ar_counter contain
	    the pulse count, and the sign bit will contain the value 
	    zero.  If an echo is not received, ar_counter will contain
	    sixteen one bits.
*/

using namespace std;

#include "/home/cs350/term.projects/include.files/external.h"
#include "/home/cs350/term.projects/include.files/guidance_state.h"
#include "/home/cs350/term.projects/include.files/run_parameters.h"
#include "/home/cs350/term.projects/include.files/sensor_output.h"

#include <iostream>  // For debugging only!  No I/O permitted in real code.

extern struct external ex;
extern struct guidance_state gs;
extern struct run_parameters rp;
extern struct sensor_output so;

void arsp()
{

}