//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------

//文件名：	PCAcapture.c

//程序說明:	此程序測試PCA負邊沿觸發的捕捉方式，連好J1和J6短路環,測試前將J13的P03同P13腳用跳線短接，
//			當按下按鍵S1,則P0.3出現一次下降沿,CE0配置到P0.3則捕捉到,是P1.0小燈亮一下。


#include <c8051f330.h>                    // SFR declarations
#include <intrins.h>
#include "common.h"
//------------------------------------------------------------------------------------
// Function PROTOTYPES
//------------------------------------------------------------------------------------
void PORTn_Init (void);
void PCA_Init (void);
void PCA_ISR (void);
 temperature (void);
sbit P03= P0^3;
sbit S1=P1^3;
sbit led=P1^0;
unsigned int m,n;

void YJ_Init(void);
void Write_CHAR(unsigned char yjchar);
//------------------------------------------------------------------------------------
// MAIN Routine
//------------------------------------------------------------------------------------
void main (void) {

   PCA0MD &= ~0x40;         // WDTE = 0 (disable watchdog timer)
   n=0;	
   PORTn_Init ();			/*IO口初始化*/
   PCA_Init ();				/*PCA初始化*/ 
   led=0;    
   EA = 1;
   
   
}

void PORTn_Init (void)
{
 
    P0SKIP    = 0x07;
    XBR1      = 0x41;

    P0MDOUT |= 0x08;     // 使能P0.3為推挽輸出
	P1MDOUT |=0x01;
led=0; 
}

void PCA_Init (void)
{
	EIE1 = 0x10;		/*允許PCA0中斷請求*/		
   	EIP1 |= 0x10;
	PCA0L	 = 0x00;
	PCA0H	 = 0x00;
	PCA0CPM0 = 0x11;	/*PCA0負邊沿捕捉方式，當CCF0=1時，允許輔捉/比較標志的中斷申請*/
	PCA0CPL0 = 0x00;
	PCA0CPH0 = 0x20;
	PCA0CN = 0x40;		/*允許PCA定時器/計數器*/
}


/*PCA中斷子程序*/
void PCA_ISR (void) interrupt 11
{  
	CF   = 0;

	CCF0 = 0;			/*清匹配中斷標志*/
	led=1;
    for(n=0;n<30000;n++);
    led=0;
   
		
}