//******************************************************************************
// Software License Agreement
//
// The software supplied herewith by Microchip Technology
// Incorporated (the "Company") is intended and supplied to you, the
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//******************************************************************************
// *****************************************************************************
// Filename: Main727.c
// Date: Dec. 13, 2007
// Purpose: Illustrate the use of the Capacitive Sensing Module
// This program scans 16 pads on a PCB. Each pad is sensed by the Capacitive
// Sensing Module at a fixed interval. The frequency of each pad at rest is averaged.l
// When a pad is touched, the frequency on the Cap. sensing module changes due to the
// extra capacitance from the finger. The change in frequency is noted and the LEDs
// light up to indicate which button was pressed.
// *****************************************************************************
//
// Compiler: Hi-Tech PIC-C v.9.60
// *****************************************************************************
#include <pic.h>
#include "Cap_Sense.h"
#define METHOD 4 // 1= Timer0 Base; 2= Timer2 Base; 3= WDT base; 4=WDT Sleep Base
#if METHOD == 4
__CONFIG(INTIO & WDTEN & PWRTEN & MCLRDIS & UNPROTECT);
#else
__CONFIG(INTIO & WDTDIS & PWRTEN & MCLRDIS & UNPROTECT);
#endif
/** Variables **/
bank1 unsigned int reading[NUM_BTTNS]; // current reading for each button
bank1 unsigned int average[NUM_BTTNS]; // running average for each button
bank1 unsigned int threshold; // threshold value is req'd # counts decrease from avg
unsigned char index; // index value relates ea. button and scanning sequence
bank2 unsigned int threshold128; // Threshold of 1/128th = 1/128th of the average value
bank2 unsigned int threshold64; // ... used in computation of threshold variable
bank2 unsigned int threshold32; // ... threshold is a selection of the sum of these
