gpior2x.c

DSP下的gpio的编写程序,平台为DSP54X

/*
;***********************************************************************
;*				  						 北京达盛科技有限公司
;*                                     	    研    发    部
;*
;*                                 	http://www.techshine.com
;*
;*--------------------------------------------- 文件信息 ---------------                                      
;*
;* 文件名称 : GPIOR2X.C	
;* 文件功能 : 该文件为测试CPU2 GPIO的测试程序,CPU=TMS320VC5402LF2407
;* 接口说明： 把2407的管脚配置成IO模式
;*-----------------------------------------------------------------------
//------------------头文件--------------------------------------

/*******************************************************************/
#include "exp4_2407.h"
/*******************************************************************/

//----------------------------------------------------------
// --------------- 宏定义 ---------------------------------/
//----------------------------------------------------------

#define UCHAR  				unsigned char
#define UINT16 				unsigned int
#define UINT32 				unsigned long

#define TRUE     			1
#define FALSE    			0


/*
**********************************************************************
          *************** 所使用的函数原型 *****************
**********************************************************************
*/

void cpu_init(void);              //初始化CPU

void iope_init(void);             //初始化IOPE

interrupt void PHANTOM(void);     //伪中断程序

extern void delay_100us(void);    //100us延迟 --指令之间的延迟

void Delay(UINT16 numbers);       //长延迟
//-------------------------------------------------------------------
/*
************************************************************************
			*********************** 函数定义 ******************
************************************************************************
*/

//--------------------------------------------------------------------
// 函数名称 : void cpu_init(void)
// 函数说明 : 初始化CPU
// 输入参数 : 无
// 输出参数 : 无
//--------------------------------------------------------------------
void cpu_init()

{

	asm(" nop ");
	asm(" nop ");
	asm(" nop ");
    asm(" setc INTM");         //禁止所有中断 ST0.9=INTM
    asm(" clrc SXM");          //抑制符号位扩展
    asm(" clrc OVM");          //累加器中结果正常溢出
    asm(" clrc CNF");          //配置 B0为数据存储器

/*** Configure the System Control and Status registers ***/    
//    * SCSR1=0x0EFD;            //配置时钟锁相为0.5倍频CLKOUT=0.5*10MHZ=5MHZ
//    * SCSR1=0x0CFD;            //*0.57
//    * SCSR1=0x0AFD;            //*0.66
//    * SCSR1=0x08FD;            //*0.8
//    * SCSR1=0x06FD;            //*1
//    * SCSR1=0x04FD;            //*1.33
//      * SCSR1=0x02FD;          //*2 
        * SCSR1=0x00FD;          //*4 
/*
 bit 15        0:      reserved
 bit 14        0:      CLKOUT = CPUCLK
 bit 13-12     00:     IDLE1 selected for low-power mode when execute IDLE instruction
 bit 11-9      111:    PLL x0.5 mode
 bit 8         0:      reserved
 bit 7         1:      1 = enable ADC module clock
 bit 6         1:      1 = enable SCI module clock
 bit 5         1:      1 = enable SPI module clock
 bit 4         1:      1 = enable CAN module clock
 bit 3         1:      1 = enable EVB module clock
 bit 2         1:      1 = enable EVA module clock
 bit 1         0:      reserved
 bit 0         1:      clear the ILLADR bit
*/    
 
      *SCSR2 = (*SCSR2 | 0x000B) & 0x000F;
    
/*
 bit 15-7      0's:    reserved
 bit 6         0:      Input Qualifier Clocks=5 clock
 bit 5         0:      D'ont write this bit.allows  user to disable WD through the WDDIS bit in the WDCR.
 bit 4         0:      XMIF_HI-Z, 0=normal mode, 1=Hi-Z'd
 bit 3         1:      disable the boot ROM, enable the FLASH
 bit 2         no change   MP/MC* bit reflects state of MP/MC* pin
 bit 1-0      11:      11 = SARAM mapped to prog and data
*/
    
/*** Disable the watchdog timer ***/
          
    * WDCR=0x00EF;             //禁止看门狗
/*
 bits 15-8     0's:     reserved
 bit 7         1:       clear WD flag
 bit 6         1:       disable the dog
 bit 5-3       101:     must be written as 101
 bit 2-0       111:     WDCLK divider = 64  WDCLK= CLKOUT/512
*/
	
/*** Setup external memory interface for LF2407  ***/
    WSGR = 0x01FF; 
  //  WSGR = 0x0000;
/*
 bit 15-11     0's:    reserved
 bit 10-9      00:     bus visibility off
 bit 8-6       111:    7 wait-state for I/O space
 bit 5-3       111:    7 wait-state for data space
 bit 2-0       111:    7 wait state for program space
*/	

/*** Setup shared I/O pins ***/
    *MCRA = 0x0000;  /* group A pins */
/*
 bit 15        0:      0=IOPB7,     1=TCLKINA
 bit 14        0:      0=IOPB6,     1=TDIRA
 bit 13        0:      0=IOPB5,     1=T2PWM/T2CMP
 bit 12        0:      0=IOPB4,     1=T1PWM/T1CMP
 bit 11        0:      0=IOPB3,     1=PWM6
 bit 10        0:      0=IOPB2,     1=PWM5
 bit 9         0:      0=IOPB1,     1=PWM4
 bit 8         0:      0=IOPB0,     1=PWM3
 bit 7         0:      0=IOPA7,     1=PWM2
 bit 6         0:      0=IOPA6,     1=PWM1
 bit 5         0:      0=IOPA5,     1=CAP3
 bit 4         0:      0=IOPA4,     1=CAP2/QEP2
 bit 3         0:      0=IOPA3,     1=CAP1/QEP1
 bit 2         0:      0=IOPA2,     1=XINT1
 bit 1         0:      0=IOPA1,     1=SCIRXD
 bit 0         0:      0=IOPA0,     1=SCITXD
*/

    *MCRB = 0xFE03;    /* group B pins */
/*
 bit 15        1:      0=reserved,  1=TMS2 (always write as 1)
 bit 14        1:      0=reserved,  1=TMS  (always write as 1)
 bit 13        1:      0=reserved,  1=TD0  (always write as 1)
 bit 12        1:      0=reserved,  1=TDI  (always write as 1)
 bit 11        1:      0=reserved,  1=TCK  (always write as 1)
 bit 10        1:      0=reserved,  1=EMU1 (always write as 1)
 bit 9         1:      0=reserved,  1=EMU0 (always write as 1)
 bit 8         0:      0=IOPD0,     1=XINT2/ADCSOC
 bit 7         0:      0=IOPC7,     1=CANRX
 bit 6         0:      0=IOPC6,     1=CANTX
 bit 5         0:      0=IOPC5,     1=SPISTE
 bit 4         0:      0=IOPC4,     1=SPICLK
 bit 3         0:      0=IOPC3,     1=SPISOMI
 bit 2         0:      0=IOPC2,     1=SPISIMO
 bit 1         1:      0=IOPC1,     1=BIO*
 bit 0         1:      0=IOPC0,     1=W/R*
*/

    *MCRC = 0x0001;    /* group C pins */
/*
 bit 15        0:      reserved
 bit 14        0:      0=IOPF6,     1=IOPF6
 bit 13        0:      0=IOPF5,     1=TCLKINB
 bit 12        0:      0=IOPF4,     1=TDIRB
 bit 11        0:      0=IOPF3,     1=T4PWM/T4CMP
 bit 10        0:      0=IOPF2,     1=T3PWM/T3CMP
 bit 9         0:      0=IOPF1,     1=CAP6
 bit 8         0:      0=IOPF0,     1=CAP5/QEP4
 bit 7         0:      0=IOPE7,     1=CAP4/QEP3
 bit 6         0:      0=IOPE6,     1=PWM12
 bit 5         0:      0=IOPE5,     1=PWM11
 bit 4         0:      0=IOPE4,     1=PWM10
 bit 3         0:      0=IOPE3,     1=PWM9
 bit 2         0:      0=IOPE2,     1=PWM8
 bit 1         0:      0=IOPE1,     1=PWM7
 bit 0         1:      0=IOPE0,     1=CLKOUT    
*/

/*** Configure IOPA pin as an INPUT ***/
    *PADATDIR = *PADATDIR & 0x00FF;
 
/*** Configure IOPB pin as an INPUT ***/
    *PBDATDIR = *PBDATDIR & 0x00FF;
    
/*** Configure IOPC pin as an INPUT ***/
    *PCDATDIR = *PCDATDIR & 0x00FF;
    
/*** Configure IOPD pin as an INPUT ***/
    *PDDATDIR = *PDDATDIR & 0xFEFF; 

/*** Configure IOPE pin as an INPUT ***/
    *PEDATDIR = *PEDATDIR & 0x00FF; 
    
/*** Configure IOPF pin as an INPUT ***/
    *PFDATDIR = *PFDATDIR & 0x7FFF;           
    

/*** Setup timers 1 and 2, and the PWM configuration ***/
    *T1CON = 0x0000;                    /* disable timer 1 */
    *T2CON = 0x0000;                    /* disable timer 2 */

    *GPTCONA = 0x0000;                  /* configure GPTCONA */
    *GPTCONB = 0x0000;                  /* configure GPTCONB */
/*     
 bit 15        0:      reserved
 bit 14        0:      T2STAT, read-only
 bit 13        0:      T1STAT, read-only
 bit 12-11     00:     reserved
 bit 10-9      00:     T2TOADC, 00 = no timerX event starts ADC
 bit 8-7       00:     T1TOADC, 00 = no timerX event starts ADC
 bit 6         0:      TCOMPOE, 0 = Hi-z all timer compare outputs
 bit 5-4       00:     reserved
 bit 3-2       00:     TXPIN, 00 = forced low
 bit 1-0       00:     TXPIN, 00 = forced low
*/
     
     * IMR=0x0000; 

/*     
 bit 15-6     0:      reserved
 bit 5        0:      Level INT6 is masked
 bit 4        0:      Level INT5 is masked
 bit 3        0:      Level INT4 is masked
 bit 2        0:      Level INT3 is masked
 bit 1        0:      Level INT2 is masked
 bit 0        0:      Level INT1 is masked

*/

     * IFR=0xFFFF;              //清除所有中断标志,"写1清0"

}


//--------------------------------------------------------------------
// 函数名称 : void iope_init(void)
// 函数说明 : 初始化CPU
// 输入参数 : 无
// 输出参数 : 无
//--------------------------------------------------------------------

void iope_init()
{

       *MCRC = 0x0001;    /* group C pins */
/*
 bit 15        0:      reserved
 bit 14        0:      0=IOPF6,     1=IOPF6
 bit 13        0:      0=IOPF5,     1=TCLKINB
 bit 12        0:      0=IOPF4,     1=TDIRB
 bit 11        0:      0=IOPF3,     1=T4PWM/T4CMP
 bit 10        0:      0=IOPF2,     1=T3PWM/T3CMP
 bit 9         0:      0=IOPF1,     1=CAP6
 bit 8         0:      0=IOPF0,     1=CAP5/QEP4
 bit 7         0:      0=IOPE7,     1=CAP4/QEP3
 bit 6         0:      0=IOPE6,     1=PWM12
 bit 5         0:      0=IOPE5,     1=PWM11
 bit 4         0:      0=IOPE4,     1=PWM10
 bit 3         0:      0=IOPE3,     1=PWM9
 bit 2         0:      0=IOPE2,     1=PWM8
 bit 1         0:      0=IOPE1,     1=PWM7
 bit 0         1:      0=IOPE0,     1=CLKOUT    
*/

  return;
  
}    


/*
***********************************************************
- 函数名称 : void Delay(int numbers)
- 函数说明 : 延时
- 输入参数 : numbers
- 输出参数 : 无
***********************************************************
*/
void Delay(UINT16 numbers)
{
  	UINT16 i,j;
  	for(i=0;i<400;i++);
 
  		for(j=0;j<numbers;j++);

  	
  		
} 
	
/*
***********************************************************
- 函数名称 : interrupt void PHANTOM(void)
- 函数说明 : 伪中断子程序
- 输入参数 : 无
- 输出参数 : 无
***********************************************************
*/


interrupt void PHANTOM(void)
{
  
  * IFR=0xFFFF;              //清除所有中断标志,"写1清0"
  asm(" clrc INTM");         //开总中断
  return;
}

/*
************************************************************
	****************** 主函数 *******************
************************************************************
*/


void main()
{

   UINT16  temp1, temp2,i;
   
//----------系统初始化-------------------------------  
   asm(" nop ");
   cpu_init();          //初始化CPU
   asm(" nop ");
   
//-----------IOPE初始化--------------------------------
   iope_init();         //初始化IOPE,配置相应的管脚为IO口
   asm(" nop ");
   
//------------GPIO测试---------------------------------
for(i=0;i<10000;i++)
 {
   asm(" nop ");
   Delay(5);  //延迟
   *PEDATDIR = *PEDATDIR | 0x6060;  //配置PWM11、12为输出管脚，输出高
   *PFDATDIR = *PFDATDIR | 0x3F3F;  //配置CAP5\6,T3PWM\T4PWM\TDIRB\TCLKINB为输出管脚，输出高
   
   asm(" nop ");
   Delay(5);   //延迟
   *PEDATDIR = *PEDATDIR & 0xFF9F;  //配置PWM11、12为输出管脚，输出低
   *PFDATDIR = *PFDATDIR & 0xFFC0;  //配置CAP5\6,T3PWM\T4PWM\TDIRB\TCLKINB为输出管脚，输出低
   
  }



    
  asm(" nop ");
  Delay(5);  //延迟
  *PEDATDIR = *PEDATDIR & 0x9FFF;  //配置PWM11、12为输入管脚
  *PFDATDIR = *PFDATDIR & 0xC0FF;  //配置CAP5\6,T3PWM\T4PWM\TDIRB\TCLKINB为输入管脚
  asm(" nop ");
  
  while(1)
  { 
   
   asm(" nop ");
   
   temp1 = *PEDATDIR & 0x0060;  //读输入的IO值
   temp2 = *PFDATDIR & 0x003f;  //读输入的IO值
   
   asm(" nop ");
   
  }

}