main.c

HT单片机模拟I2C通讯

/********************************************
*   文件名:main.c                           	*
*   实现功能:通过键盘完成对电机M1、M2的升降控制 	*
*   作者:xxlxws                             	*
*   日期:2006-08-06                         	*
*   版本号:1.0                              	*
********************************************/

#include "ht46r47.h"
#include "main.h"
#include "init.h"
#include "func.h"
#include "inter.h"

void main(void)
{
    uint8 i,rd_data[10],addr;
    bit ack;
	uint8 wr_data[10] = {0x12,0x20,0x28,0xfe,0x16,0x45,0x98,0x73,0x55,0x01};
	addr = 0x20;
    Init();
    while(1)
    {
		I2C_Write_N(10,addr,wr_data);
		for(i=0; i<10; i++)
		{
			rd_data[i] = 0x00;
		}
		I2C_Read_N(10,addr,rd_data);


        /*写*/
		for(i=0; i<10; i++)
		{		
        	I2C_Start();
        	I2C_Write_Byte(0xa0);               /*写控制字*/
        	ack = I2C_Ack();                    /*ACK*/
        	if(!ack)
        	{
        	    I2C_Write_Byte(addr+i);           /*写地址*/
        	    ack = I2C_Ack();                /*ACK*/
        	    if(!ack)
        	    {
        	        I2C_Write_Byte(wr_data[i]);       /*写数据*/
        	        ack = I2C_Ack();            /*ACK*/
        	        I2C_Stop();
        	    }
        	}
		}		/*end of for loop*/

        /*读*/
		for(i=0; i<10; i++)
		{
			rd_data[i] = 0x00;
		}


		for(i=0; i<10; i++)
		{
			I2C_Start();
			I2C_Write_Byte(0xa0);               /*写控制字*/
			ack = I2C_Ack();                    /*ACK*/
			if(!ack)
			{
				I2C_Write_Byte(addr+i);          /*写地址*/
				ack = I2C_Ack();                /*ACK*/
				if(!ack)
				{
					I2C_Start();
					I2C_Write_Byte(0xa1);       /*写控制字读取当前地址数据*/
					ack = I2C_Ack();            /*ACK*/
					if(!ack)
					{
						rd_data[i] = I2C_Read_Byte();
						I2C_Stop();
					}
				}
			}
		}		/*end of for loop*/
    }   /*end of while(1)*/
}