main.c.bak

PIC4455 ADC源程序

//==============================================================================
// DEVICE       = PICC-18
// VERSION      = 1.0
// DATE         = 11.08.2007
// LAST CHANGE  = -
// Developer    = Keith Yuen
// =============================================================================
// Description:  ADC Driver demo for PIC18F4455
// =============================================================================

#include <pic18.h>
#include "delay.h"
#include "adc.h"
#include "glcd.h"


void PortInit(void)
{
	TRISD = 0b00000000;
	TRISC = 0b00000000;
	TRISB = 0b00000000;
	TRISA = 0b11111111;
}


void TimerInit(void)
{
	//TIMER
	TMR0IE = 1;
	TMR0H = 0xD1;	//1ms
	TMR0L = 0xDF;
	T0CON = 0x08;	//
	TMR0ON = 1;		//ON TIMER
}

void main()
{
	unsigned char value;

	//OFF WatchDog
	SWDTEN = 0;	

	//INTERRUPT
    INTCON = 0;  // reset all the flag bits for all the interrupts
    GIE    = 1;  // global interrupt enable bit (1: enable all)

	
	PortInit();
	TimerInit();
	
	ADC_Init();
	DelayMs(50);
	GLCD_Init();


	GLCD_WriteAlignString("ADC DEMO", 0, GLCD_ALIGN_CENTER);
	GLCD_WriteAlignString("ADC : ", 2, GLCD_ALIGN_LEFT);

	while(1)
	{
		ADC_Convert();
		GLCD_SetPos(2, GLCD_charPos[6]);
		ADC_Wait();
		value = ADC_GetByte();
		GLCD_WriteDec(value);
		DelayMs(250);
	}
}

//1ms interrupt
void interrupt prv_int(void)
{
	static unsigned char tick10ms = 0;
	static unsigned char tick1ms = 0;

    if (!TMR0IF)
       return;
	
    TMR0IF = 0;
	TMR0H = 0xD1;	//1ms
	TMR0L = 0xDF;



    tick1ms++;
    if (tick1ms == 10)
    {
        tick1ms = 0;
		////////////////////////
		//10ms ACTION HERE:
		tick10ms++;
	    if (tick10ms == 100)
	    {
	        tick10ms = 0;
			////////////////////////
			//1s ACTION HERE:
			
	    }
    }

		

}