io.c

使用TI DSP 2407A 进行开发的源代码

#include "io.h"

#include "DSP240x_Device.h"



//本函数配置IO口的功能，参数列表为1.IO口复用控制寄存器，2端口方向与数据控制寄存器
//3一般IO口似能值，4，端口为输入还是输出，5，如果为输出时的默认值6,输出寄存器值

void IO_Init()
{

//IO_Status_Init(NO1_MCR,NO1_DATDIR,NO1_ENA,IO_IN,NO1_OUT,IO_LOW,NO1_HIGH);

       IO_Status_Init(CAP1_MCR,CAP1_DATDIR,CAP1_ENA,IO_IN,CAP1_OUT,IO_LOW,CAP1_HIGH);
       IO_Status_Init(CAP2_MCR,CAP2_DATDIR,CAP2_ENA,IO_IN,CAP2_OUT,IO_LOW,CAP2_HIGH);
       IO_Status_Init(CAP3_MCR,CAP3_DATDIR,CAP3_ENA,IO_IN,CAP3_OUT,IO_LOW,CAP3_HIGH);
       IO_Status_Init(CAP4_MCR,CAP4_DATDIR,CAP4_ENA,IO_IN,CAP4_OUT,IO_LOW,CAP4_HIGH);


}
void IO_Status_Init(volatile unsigned int * mcr,volatile unsigned int * datdir,unsigned int X_enable , 
          unsigned int in_out,unsigned int X_io_out,unsigned int High_Low,unsigned int X_high)
{
      volatile unsigned int * temp_mcr;
      volatile unsigned int * temp_datdir;
      unsigned int TEMPREG;
      
      temp_mcr = mcr;
      temp_datdir = datdir;
      
      TEMPREG = * temp_mcr;
      TEMPREG &=  ~X_enable;
      *temp_mcr = TEMPREG;
      
      if(in_out == 0)    //0:input
      {
         TEMPREG = * temp_datdir;
         TEMPREG &=  ~ X_io_out;
         * temp_datdir = TEMPREG;
      }
      
      else                  //1 or other :output
      {
      
         TEMPREG = *temp_datdir;
         TEMPREG |= X_io_out;
         
        if(High_Low)		
			TEMPREG |= X_high;
		else
			TEMPREG &= (~X_high);
			
		*temp_datdir = TEMPREG;
		
	  } 
	  
 }
      
      
      
unsigned int IN_Status_Load(volatile unsigned int * datdir,unsigned int X_high)
{
	unsigned int TEMPREG = 0 ;	

	TEMPREG = * datdir;
	TEMPREG &= X_high;

	if (TEMPREG >0)
		return 1;
	else
		return 0;
}



void OUT_Status_Set(volatile unsigned int * datdir,unsigned High_Low,unsigned int X_high)
{
	unsigned int TEMPREG;

	TEMPREG = * datdir;
	
		if(High_Low)		
			TEMPREG |=X_high;
		else
			TEMPREG &= (~X_high);
	
	 * datdir = TEMPREG;

}




void IO_test()
{
   unsigned int temp,i;

   IO_Status_Init(NO1_MCR,NO1_DATDIR,NO1_ENA,IO_IN,NO1_OUT,IO_LOW,NO1_HIGH);
         
	for (i=0;i<10;i++)
	{
	
    	temp = IN_Status_Load(NO1_DATDIR,NO1_HIGH);
    	
    	puts("dfghdfhdf");
    	 
    	 printf ("the status is. %d \n",temp);
	
    	wait_second(3);
		
	}
	
}