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MAX6955驱动16段数码管
//-----------------------------------------------------------------
//  说明: 本例运行时,8只16段数码滚动显示数字0~9,字母A~Z
//        本例使MAX6955工作于全解码模式,因此只需要向MAX6955输出
//        待显示字符ASCII码即可,不需要编写并发送各字符的段码.
//
//----------Proteus中单只16段数码管上下排引脚名称------------------
// NO.  1   2   3  4   5   6   7  8   9
//******************************************
// 上:  A1  A2  B  C   D2  D1  E  F   位控制
// 下:  H   I   J  G2  K   I   M  G1  DP
//-----------------------------------------------------------------
#include <pic.h> 
#include <string.h>
#define INT8U   unsigned char
#define INT16U  unsigned int
#define _XTAL_FREQ 4000000UL
//子器件地址0xC0,0xC1
#define MAX6955R 0B11000001  //1 = READ 
#define MAX6955W 0B11000000  //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();}
//16段数码管滚动显示的字符串
char SEG_LED_String[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
//-----------------------------------------------------------------
// 延时子程序
//-----------------------------------------------------------------
void delayX100ms(INT8U x)
{
    while (x--) __delay_ms(100);
}

//-----------------------------------------------------------------
// 写MAX6955子程序
//-----------------------------------------------------------------
void MAX6955_Write(INT8U addr, INT8U dat)
{


}

//-----------------------------------------------------------------
// MAX6955初始化
//-----------------------------------------------------------------
void MAX6955_INIT()
{



}

//-----------------------------------------------------------------
// IIC初始化
//-----------------------------------------------------------------
void IIC_Init()
{



}

//-----------------------------------------------------------------
// 主程序
//-----------------------------------------------------------------
void main()
{
    INT8U i,j,Len = strlen(SEG_LED_String);
    IIC_Init();                       //IIC初始化
    MAX6955_INIT();                   //MAX6955初始化设置    
    while (1)
    {  




    }
}