main.c

在ADS1.2编译环境下编写的I2C总线驱动中间件实验

/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                      graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name:			main.c
** Last modified Date:  2004-09-16
** Last Version:		1.0
** Descriptions:		The main() function example template
**
**------------------------------------------------------------------------------------------------------
** Created by:			Chenmingji
** Created date:		2004-09-16
** Version:				1.0
** Descriptions:		The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Descriptions:
**
********************************************************************************************************/
#include "config.h"
#include "stdlib.h"

#define	TaskStkLengh	64			//Define the Task0 stack length 定义用户任务0的堆栈长度
OS_STK	TaskStk [TaskStkLengh];		//Define the Task0 stack 定义用户任务0的堆栈

void 	Task0(void *pdata);			//Task0 任务0

int main(void)
{
	OSInit ();																										
	OSTaskCreate (Task0,(void *)0, &TaskStk[TaskStkLengh - 1], 2);		
	OSStart ();
	return 0;															
}


/*********************************************************************************************************
**                            Task0 任务0
********************************************************************************************************/
void Task0(void *pdata)
{   char  disp_buf[50];
    uint8  dat_buf[10];


	pdata = pdata;
	TargetInit();
	
	while (1)
	{   dat_buf[0] = 0;         // 扩展地址(LM75温度寄存器的地址)	    
	    I2cRead(LM75, dat_buf, dat_buf, 1, 2);
	    
	    if((dat_buf[0]&0x80)==0)
	    {   // 正温度时，直接将dat_buf[0]和dat_buf[1]的d7位转换为相应温度值
	        sprintf(disp_buf, "Temperature is %3d.", (int)dat_buf[0]);
	        if((dat_buf[1]&0x80)==0)
	        {   strcat(disp_buf, "0");
	        }
	        else
	        {   strcat(disp_buf, "5");
	        } // end of if((dat_buf[0]&0x80)==0)...else...	        
	    }
	    else
	    {   // 负温度时，需要将dat_buf[0]和dat_buf[1]的d7位取补数，再转换为相应温度值
	        dat_buf[0] = ~dat_buf[0];
	        dat_buf[1] = (~dat_buf[1])+0x80;
	        if((dat_buf[1]&0x80)==0) dat_buf[0] += 1;
	        
	        sprintf(disp_buf, "Temperature is -%3d.", (int)dat_buf[0]);
	        if((dat_buf[1]&0x80)==0)
	        {   strcat(disp_buf, "0");
	        }
	        else
	        {   strcat(disp_buf, "5");
	        } // end of if((dat_buf[0]&0x80)==0)...else...	
	    }
	    PC_DispStr(30,10, disp_buf, DISP_FGND_YELLOW+DISP_BGND_BLUE);
		OSTimeDly(OS_TICKS_PER_SEC);    // 延时1S
	}
}
   
/*********************************************************************************************************
**                            End Of File
********************************************************************************************************/