dcmotor.c

使用DSP2812

#include "DSP281x_Device.h"     // DSP281x Headerfile Include File
#include "DSP281x_Examples.h"   // DSP281x Examples Include File

// Prototype statements for functions found within this file.
interrupt void cpu_timer0_isr(void);
void Delay(unsigned int nTime);

void Gpio_select(void);
void error(int);
void program_stop();
void Gpio_PortA(void);
void Gpio_PortB(void);
void Gpio_PortF(void);
void Gpio_PortDEG(void);
char ConvertScanToChar(unsigned char cScanCode);
void RefreshLEDArray();			// 刷新显示
void SetLEDArray(int nNumber);		// 修改显示内容

#define T46uS		0x0d40
#define SCANCODE_0 0x70
#define SCANCODE_1 0x69
#define SCANCODE_2 0x72
#define SCANCODE_3 0x7A
#define SCANCODE_4 0x6B
#define SCANCODE_5 0x73
#define SCANCODE_6 0x74
#define SCANCODE_7 0x6C
#define SCANCODE_8 0x75
#define SCANCODE_9 0x7D
#define SCANCODE_Del 0x49
#define SCANCODE_Enter 0x5A
#define SCANCODE_Plus 0x79
#define SCANCODE_Minus 0x7B
#define SCANCODE_Mult 0x7C
#define SCANCODE_Divid 0x4A
#define SCANCODE_Num 0x77

Uint16 var1 = 0;
Uint16 var2 = 0;
Uint16 var3 = 0;
Uint16 test_count = 0;
Uint16 Test_flag = 0;
Uint16 Test_var  = 0;
Uint16 Test_status[32];

Uint16 PASS_flag = 0;
unsigned int uWork;

int jishu=0;
unsigned int uWork,nCount=0,uN,uN1,nCount1,nDir;
unsigned int uPort8000;

unsigned int nScreenBuffer[1024];
unsigned char ledbuf[8],ledx[8];
unsigned char ledkey[10][8]=
{
	{0x00,0x00,0x7C,0x82,0x82,0x82,0x7C,0x00},
	{0x00,0x00,0x00,0x84,0xFE,0x80,0x00,0x00},	//1
	{0x00,0x00,0x84,0xC2,0xA2,0x92,0x8C,0x00},	//2
	{0x00,0x00,0x44,0x92,0x92,0x92,0x6C,0x00},
	{0x00,0x00,0x30,0x28,0x24,0xFE,0x20,0x00},
	{0x00,0x00,0x4E,0x92,0x92,0x92,0x62,0x00},
	{0x00,0x00,0x7C,0x92,0x92,0x92,0x64,0x00},
	{0x00,0x00,0x02,0xC2,0x32,0x0A,0x06,0x00},
	{0x00,0x00,0x6C,0x92,0x92,0x92,0x6C,0x00},
	{0x00,0x00,0x4C,0x92,0x92,0x92,0x7C,0x00}
};

void main(void)
{   
	int nCount=0;
    char cKey,cOldKey;
	unsigned int nScanCode,nKeyCode;
	unsigned int nSpeed;

// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP281x_SysCtrl.c file.
   InitSysCtrl();

// Step 2. Initalize GPIO: 
// This example function is found in the DSP281x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio();  // Skipped for this example  


// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts 
   DINT;

// Initialize the PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.  
// This function is found in the DSP281x_PieCtrl.c file.
   InitPieCtrl();
   
// Disable CPU interrupts and clear all CPU interrupt flags:
   IER = 0x0000;
   IFR = 0x0000;

// Initialize the PIE vector table with pointers to the shell Interrupt 
// Service Routines (ISR).  
// This will populate the entire table, even if the interrupt
// is not used in this example.  This is useful for debug purposes.
// The shell ISR routines are found in DSP281x_DefaultIsr.c.
// This function is found in DSP281x_PieVect.c.
   InitPieVectTable();

// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.  
   EALLOW;  // This is needed to write to EALLOW protected registers
   PieVectTable.TINT0 = &cpu_timer0_isr;
   EDIS;    // This is needed to disable write to EALLOW protected registers

// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP281x_InitPeripherals.c
// InitPeripherals(); // Not required for this example

   /////InitCpuTimers();   // For this example, only initialize the Cpu Timers
   	CpuTimer0.RegsAddr = &CpuTimer0Regs;
	// Initialize timer period to maximum:	
	////CpuTimer0Regs.PRD.all  = T46uS*9*6/5;
	CpuTimer0Regs.PRD.all  = 0x500;
	// Initialize pre-scale counter to divide by 1 (SYSCLKOUT):	
	CpuTimer0Regs.TPR.all  = 0;
	CpuTimer0Regs.TIM.all  = 0;
	CpuTimer0Regs.TPRH.all = 0;
	// Make sure timer is stopped:
	CpuTimer0Regs.TCR.bit.TSS = 1;
	CpuTimer0Regs.TCR.bit.SOFT = 1;
	CpuTimer0Regs.TCR.bit.FREE = 1;
	// Reload all counter register with period value:
	CpuTimer0Regs.TCR.bit.TRB = 1;
	CpuTimer0Regs.TCR.bit.TIE = 1;
	// Reset interrupt counters:
	CpuTimer0.InterruptCount = 0;	         


    StartCpuTimer0();

// Step 5. User specific code, enable interrupts:


// Enable CPU INT1 which is connected to CPU-Timer 0:
   IER |= M_INT1;

// Enable TINT0 in the PIE: Group 1 interrupt 7
   PieCtrlRegs.PIEIER1.bit.INTx7 = 1;

// Enable global Interrupts and higher priority real-time debug events:
   EINT;   // Enable Global interrupt INTM
   ERTM;   // Enable Global realtime interrupt DBGM
   
   *(int *)0x108000=0x80;		// 初始化ICETEK-CTR
   *(int *)0x108000=0x0;
   *(int *)0x108000=0x80;
   *(int *)0x108007=0;			// 关闭东西方向的交通灯
   *(int *)0x108007=0x40;	// 关闭南北方向的交通灯
   *(int *)0x108007=0xC0;
   *(int *)0x108000=0x81;
	uPort8000=*(int *)0x108002;

   Gpio_PortA();
   Gpio_PortB();
   nSpeed=T46uS; 
   uN=60; nCount=nCount1=0; nDir=0; cKey=cOldKey=0;   
   while (1)
	{
	    		
	if ( nCount==0 )
		{
			//nCount=0;
			nScanCode=*(int *)0x108001;	// 读扫描码
			nScanCode&=0x0ff;	// 低8位
			uPort8000=*(int *)0x108002;
		
			if ( nScanCode!=0 )
			{
				if ( nScanCode==SCANCODE_Enter )	break;
				else
				{
					cKey=ConvertScanToChar(nScanCode);
					if ( cKey!=0 && cOldKey!=cKey )
					{
						cOldKey=cKey;
						switch ( cKey )
						{
							case '0': uN=30; break;
							case '1': uN=40; break;
							case '2': uN=50; break;
							case '3': uN=60; break;
							case '4': uN=800; break;
							case '5': uN=100; break;
							case '+':
								uN1=uN;
								uN=60;		// 降速
								Delay(128);
								GpioDataRegs.GPADAT.bit.GPIOA4 = 1;
															
   								////CpuTimer0Regs.PRD.all = nSpeed; 
   								//CpuTimer0Regs.PRD.all = 182*50;
				 			 	nDir=0; 
  			 					Delay(128);
								uN=uN1;
								break;
							case '-':
								uN1=uN;
								uN=60;		// 降速
								Delay(128);					
					            GpioDataRegs.GPADAT.bit.GPIOA4 = 0;						
   					            Delay(128);
   					            //CpuTimer0Regs.PRD.all=nSpeed; 
				 			 	nDir=1;
								Delay(128);
								uN=uN1;
								break;
						}
					}
				}
			}
		  
		}
		Delay(256);
	}
	StopCpuTimer0();
	*(int *)0x108000=0;
} 


interrupt void cpu_timer0_isr(void)
{  
   CpuTimer0.InterruptCount++;

   // Acknowledge this interrupt to receive more interrupts from group 1
   PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
   CpuTimer0Regs.TCR.bit.TIF = 1;
   CpuTimer0Regs.TCR.bit.TRB = 1;
   GpioDataRegs.GPBSET.bit.GPIOB4=1;
/*
   if(jishu==0)
    {GpioDataRegs.GPBDAT.bit.GPIOB4=0;
    //GpioDataRegs.GPBDAT.bit.GPIOB4=1;
     jishu=1;
     }
   else
    {GpioDataRegs.GPBDAT.bit.GPIOB4=1;
    jishu=0;
     }
*/
	GpioDataRegs.GPBDAT.bit.GPIOB4=( nCount1<uN )?1:0;
   nCount++;nCount%=64;
   nCount1++; nCount1%=100;
}

void Delay(unsigned int nDelay)
{
	int ii,jj,kk=0;
	for ( ii=0;ii<nDelay;ii++ )
	{
		for ( jj=0;jj<64;jj++ )
		{
			//RefreshLEDArray();
			kk++;
		}
	}
}

void Gpio_PortA(void)
{    

// GPIO Test #2: 
// Configure Upper 8 bits of Port as inputs and lower 8 bits as outputs    
// Loop back bits [7:0] to bits [15:8]
// Don't set any input qualifier
 
    var1= 0x0000;       // sets GPIO Muxs as I/Os
    var2= 0x00FF;       // sets GPIO 15-8 DIR as inputs, 7-0 DIR as outputs
    var3= 0x0000;       // Don't set any input qualifier
    
    Gpio_select();    
    
    test_count = 0;
    Test_status[Test_var] = 0x0002;
    Test_var++;
    
    Test_status[Test_var] = 0xD0BE;      // Set the default value of status 
                                         // to "PASSED"
    GpioDataRegs.GPACLEAR.all = 0x00FF;  // Test Clear
    asm(" RPT #5 ||NOP");                             
    GpioDataRegs.GPASET.bit.GPIOA4=1;
 
}

void Gpio_PortB(void)
{    

// GPIO Test #2: 
// Configure Upper 8 bits of Port as inputs and lower 8 bits as outputs    
// Loop back bits [7:0] to bits [15:8]
// Don't set any input qualifier
 
    var1= 0x0000;       // sets GPIO Muxs as I/Os
    var2= 0x00FF;       // sets GPIO 15-8 DIR as inputs, 7-0 DIR as outputs
    var3= 0x0000;       // Don't set any input qualifier
    
    Gpio_select();    
    
    test_count = 0;
    Test_status[Test_var] = 0x0002;
    Test_var++;
    
    Test_status[Test_var] = 0xD0BE;      // Set the default value of status 
                                         // to "PASSED"
    GpioDataRegs.GPBCLEAR.all = 0x00FF;  // Test Clear
    asm(" RPT #5 ||NOP");                             
    GpioDataRegs.GPBSET.bit.GPIOB4=1;
 
}

void Gpio_select(void)
{
     EALLOW;
     
    GpioMuxRegs.GPAMUX.all=var1;   // Configure MUXs as digital I/Os or
    GpioMuxRegs.GPBMUX.all=var1;   // peripheral I/Os
    GpioMuxRegs.GPDMUX.all=var1;
    GpioMuxRegs.GPFMUX.all=var1;         
    GpioMuxRegs.GPEMUX.all=var1; 
    GpioMuxRegs.GPGMUX.all=var1;
                                        
    GpioMuxRegs.GPADIR.all=var2;   // GPIO PORTs  as output
    GpioMuxRegs.GPBDIR.all=var2;   // GPIO DIR select GPIOs as output 
    GpioMuxRegs.GPDDIR.all=var2;
    GpioMuxRegs.GPEDIR.all=var2;        
    GpioMuxRegs.GPFDIR.all=var2; 
    GpioMuxRegs.GPGDIR.all=var2;

    GpioMuxRegs.GPAQUAL.all=var3;  // Set GPIO input qualifier values
    GpioMuxRegs.GPBQUAL.all=var3;   
    GpioMuxRegs.GPDQUAL.all=var3;
    GpioMuxRegs.GPEQUAL.all=var3;
 
    EDIS;
     
}     

char ConvertScanToChar(unsigned char cScanCode)
{
	char cReturn;
	
	cReturn=0;
	switch ( cScanCode )
	{
		case SCANCODE_0: cReturn='0'; break;
		case SCANCODE_1: cReturn='1'; break;
		case SCANCODE_2: cReturn='2'; break;
		case SCANCODE_3: cReturn='3'; break;
		case SCANCODE_4: cReturn='4'; break;
		case SCANCODE_5: cReturn='5'; break;
		case SCANCODE_6: cReturn='6'; break;
		case SCANCODE_7: cReturn='7'; break;
		case SCANCODE_8: cReturn='8'; break;
		case SCANCODE_9: cReturn='9'; break;
//		case SCANCODE_F1: 
		case SCANCODE_Plus: cReturn='+'; break;
//		case SCANCODE_F2: 
		case SCANCODE_Minus: cReturn='-'; break;
	}
	 
	return cReturn;
}

//===========================================================================
// No more.
//========================================