main.c

单片机c语言程序设计100例--基于PIC+PROTEUS

//-----------------------------------------------------------------
//  名称: 用IIC接口控制MAX6953驱动4片5x7点阵显示器
//-----------------------------------------------------------------
//  说明: 本例运行时,四块点阵屏将滚动显示一组信息串,信息串中的字符
//        点阵信息由MAX6953提供,本例不需要为各字符单独提供字模点阵.
//        运行过程中通过按键命令可随时关断或开启6953.
//
//-----------------------------------------------------------------
#include <pic.h> 
#include <string.h>
#define INT8U   unsigned char
#define INT16U  unsigned int
#define _XTAL_FREQ 4000000UL
//子器件地址
#define MAX6953R 0B10100001  //1 = READ
#define MAX6953W 0B10100000  //0 = WRITE
bit ack = 0;
//I2C通用操作宏定义
#define Idle()         {while ((SSPCON2 & 0x1F)|(RW));}
#define Wait()         {while (SSPIF == 0);SSPIF = 0;}
#define Start()        {Idle(); SSPIF = 0;  SEN = 1; Wait();}
#define Stop()         {Idle(); SSPIF = 0;  PEN = 1; Wait();}
#define RepStart()     {Idle(); SSPIF = 0;  RSEN = 1;Wait();}
#define WriteByte(x)   {Idle(); SSPBUF = x; Wait(); ack = !ACKSTAT; }
#define EnableRecv()   {Idle(); RCEN = 1;   while (SSPIF == 0);}
#define AckI2C()       {ACKDT = 0;ACKEN = 1;Wait();}
#define NoAckI2C()     {ACKDT = 1;ACKEN = 1;Wait();}
//四块点阵屏滚动显示的信息串
char LED_String[] = "5x7LED TEST: <----0123456789";
//MAX6953关断控制
INT8U Shut_Down_6953 = 0x01;
//-----------------------------------------------------------------
// 延时子程序
//-----------------------------------------------------------------
void delayX100ms(INT8U x)
{
    while (x--) __delay_ms(100);
}

//-----------------------------------------------------------------
// I2C初始化
//-----------------------------------------------------------------
void I2C_Init()
{


}
      
//-----------------------------------------------------------------
// 写MAX6953子程序
//-----------------------------------------------------------------
void MAX6953_Write(INT8U addr, INT8U dat)
{


}

//-----------------------------------------------------------------
// MAX6953初始化
//-----------------------------------------------------------------
void MAX6953_INIT()
{


}

//-----------------------------------------------------------------
// 主程序
//-----------------------------------------------------------------
void main()
{
    INT8U i,j;
    TRISB0 = 1;                  //RB0按键输入
    RBPU = 0;                    //RB端口内部上拉




    while(1)
    {  



    }
}

//-----------------------------------------------------------------
// INT0中断函数控制点阵屏关断或开启
//-----------------------------------------------------------------
void interrupt Key_INT() 
{
   if (INTF == 1)
   {   


   } 
}