// File: UrineControl.c
//
// 
// MIT Media Lab
// December, 05 2002
// 
//
#case
#include <16F877.H>

// Configure PIC to use: HS clock, no Watchdog Timer, 
// no code protection, enable Power Up Timer
//
#fuses HS,NOWDT,NOPROTECT,PUT

// Tell compiler clock is 20MHz.  This is required for delay_ms()
// and for all serial I/O (such as printf(...).  These functions
// use software delay loops, so the compiler needs to know the
// processor speed.
//
#use DELAY(clock=20000000)

//
//
#use fast_io(A)
#use fast_io(B)
#use fast_io(c)
#use fast_io(d)
#use fast_io(e)

// Pins for piezscan
//
#define RS232_XMT       PIN_C6  // (output) RS232 serial transmit
#define RED_LED         PIN_D7  // (output) Red LED (low true)
#define RS232_RCV       PIN_C7  // (input) RS232 serial receive
#define PIEZO1		PIN_B0  // (input) piezo mic
#define PIEZO2		PIN_B1  // (input) piezo mic
#define PIEZO3		PIN_B2  // (input) piezo mic
#define PIEZO4		PIN_B3  // (input) piezo mic
#define PIEZO5		PIN_B4  // (input) piezo mic
#define PIEZO6		PIN_B5  // (input) piezo mic
#define PIEZO7		PIN_B6  // (input) piezo mic
#define PIEZO8		PIN_B7  // (input) piezo mic
#define PIEZO9		PIN_A0  // (input) piezo mic
#define PIEZO10		PIN_A1  // (input) piezo mic
#define PIEZO11		PIN_A2  // (input) piezo mic
#define PIEZO12		PIN_A3  // (input) piezo mic
#define PIEZO13		PIN_A4  // (input) piezo mic
#define PIEZO14		PIN_A5  // (input) piezo mic
#define PIEZO15		PIN_E0  // (input) piezo mic
#define PIEZO16		PIN_E1  // (input) piezo mic

// Macros to simplify I/O operations
//
#define RED_LED_ON      output_low(RED_LED)
#define RED_LED_OFF     output_high(RED_LED)

// Default tri-state port direction bits: all PORT B bits are
// output except for RC232_RCV (port-Cbit 7).
// port d output except d7 which is input for red led.

#define IRX_A_TRIS      0b111111
#define IRX_B_TRIS      0b11111111
#define IRX_C_TRIS      0b10000000
#define IRX_D_TRIS	0b00000000
#define IRX_E_TRIS      0b011


//
// Inform printf() and friends of the desired baud rate 
// and which pins to use for serial I/O.
//
#use rs232(baud=9600, xmit=RS232_XMT, rcv=RS232_RCV)

//Global Varibles

long state_packet1;
long state_packet2;
long i;

//Functions

void state_test()
{
	state_packet1 = 0;
	state_packet2 = 0;

	for (i=0; i<800; i++)
	{

		if(input(PIEZO1)) state_packet1 |= 0b00000001;
		if(input(PIEZO2)) state_packet1 |= 0b00000010;
		if(input(PIEZO3)) state_packet1 |= 0b00000100;
		if(input(PIEZO4)) state_packet1 |= 0b00001000;
		if(input(PIEZO5)) state_packet1 |= 0b00010000;
		if(input(PIEZO6)) state_packet1 |= 0b00100000;
		if(input(PIEZO7)) state_packet1 |= 0b01000000;
		if(input(PIEZO8)) state_packet1 |= 0b10000000;
 
		if(input(PIEZO9))  state_packet2 |= 0b00000001;
		if(input(PIEZO10)) state_packet2 |= 0b00000010;
		if(input(PIEZO11)) state_packet2 |= 0b00000100;
		if(input(PIEZO12)) state_packet2 |= 0b00001000;
		if(input(PIEZO13)) state_packet2 |= 0b00010000;
		if(input(PIEZO14)) state_packet2 |= 0b00100000;
		if(input(PIEZO15)) state_packet2 |= 0b01000000;
		if(input(PIEZO16)) state_packet2 |= 0b10000000; 
	}
	return;
}


void main() 
  {
  // since we've declared #use fast_io(B) (above), we MUST 
  // include a call to set_tris_b() at startup.
  // 
  set_tris_a(IRX_A_TRIS);
  set_tris_b(IRX_B_TRIS);
  set_tris_c(IRX_C_TRIS);
  set_tris_d(IRX_D_TRIS);
  set_tris_e(IRX_E_TRIS);

  RED_LED_ON;                    // reality check at startup
  delay_ms(200);
  RED_LED_OFF;
  printf("Start up successful \r\n");

  while(1)
  {
    state_test();
    printf("%2x%2x \r\n", state_packet2, state_packet1);     // print to serial port
  }
}