main.c

BF561采集PAL制图像

#include "main.h"


// set up DMA descriptors (one for each frame, then repeat)
// small descriptor model, only start address needs to be fetched

tDMA_descriptor DMA_PPI0_first = 	{&DMA_PPI0_second, sFrame0};
tDMA_descriptor DMA_PPI0_second = 	{&DMA_PPI0_third , sFrame1};
tDMA_descriptor DMA_PPI0_third = 	{&DMA_PPI0_fourth, sFrame2};
tDMA_descriptor DMA_PPI0_fourth = 	{&DMA_PPI0_first , sFrame3};

extern volatile char p,b;



#define DELAY_SIZE 0x00fffffff
//long sum,t,i;
//int ave,l1=0x60,l2=0x80,lp=0x70;
//int DGC=0x20;
//int AGC=0x00;
volatile int current_in_Frame  = -1;		// 0, 1, 2 or 3  ... indicates the last frame that was received COMPLETELY
//short c,d1,d2;
bool Set_PACK32 = false;
bool Set_Entire_Field = false;
bool ISPAL=1;
//int *r1,*r2;
// User program
void main() {

	// unblock Core B if dual core operation is desired	
#ifndef RUN_ON_SINGLE_CORE
	*pSICA_SYSCR &= 0xFFDF; // clear bit 5 to unlock  
#endif

	// set Clocks
	Set_PLL( (short)(CORECLK/CLKIN), (short)(CORECLK/SYSCLK));			// sets Core and System Clocks to the values defined in system.h 

	// initialise SDRAM
	InitSDRAM();
	
	*pTC_PER = 0x0770;			// set DMA traffic control register to favour unidirectional transfers to SDRAM

	// initialise Video Encoder ADV7179
	Reset_ADV7171();
	if (!Init_ADV7171(ISPAL))
	return false;

	// initialise Video Decoder ADV7183
	Reset_tvp5150();
	if (!Init_tvp5150(ISPAL))
	return false;
	//if (!I2C_Read5150(&r, 0x07)) return false;
	
	// initialise PPI0 and associated DMA channel for Video IN
	current_in_Frame  = -1;				// no frames received yet
	semaphore_frames_received = false;	// do not start output stream yet

	Set_Entire_Field = false;
#ifdef ENTIRE_FIELD_MODE
	Set_Entire_Field = true;
#endif

	Set_PACK32 = false;
#ifdef PACK_32
	Set_PACK32 = true;
#endif
	
	InitPPI0(Set_Entire_Field, Set_PACK32, &DMA_PPI0_first, PIXEL_PER_LINE, LINES_PER_FRAME);
	

		
	// initialise Interrupts
	InitInterrupts_coreA();
	
	
	// enable transfers
	*pDMA1_0_CONFIG |= DMAEN;
	ssync();
	*pPPI0_CONTROL |= PORT_EN;
	
	ssync();
	//p=0;
	//b=0;
	
	
		//I2C_Write3152(0x02,0xA1);
	   // I2C_Write3152(0x09,0x1A);
	   // I2C_Write3152(0x3F,0x1B);
	    //I2C_Write3152(0x06,0x1C);
	   // I2C_Write3152(0x3F,0x1D);
	    //I2C_Write3152(0x01,0x38);
//	printf("Core #%d Started input stream!\n", &_CORE);


	//sum=0;
	// main loop, just wait for interrupts
	/*for(;;)
	{
	while(p) {
				//   do nothing
		d1=*sFrame0;
		d2=*(sFrame0+1);
		for(t=0;t<0x65401;t++)
		{
			sum=sum+*(sFrame0+t);
		}
		ave=(sum/0x65401);/// while(1)
	    p=0x0;
	    
	   /*if (ave>l2)            //图像亮度过高
         { 
            if(ave-lp>2)
            {
               if(DGC>=0x25)
                 {DGC=DGC-0x05;}
                   if(DGC>=0x20) 
                    I2C_Write3152(DGC,0x33);
                    if(AGC>=0x03)
                   {AGC=AGC-0x05;}
                   if(AGC>=0x00)
                   I2C_Write3152(AGC,0x35);
            }
         }*/
            /*if (ave<l1)           //图像亮度过低
         {
            /* if((lp-ave)>2)
             {
               if(DGC<=0xFA)
                {DGC=DGC+0x05;}
                if(DGC<=0xFF)
                I2C_Write3152(DGC,0x33);
                if(AGC<=0x7C)
                  {AGC=AGC+0x05;}
                  if(AGC<=0x7F)
                  I2C_Write3152(AGC,0x35);
             }
             I2C_Write3152(0x7f,0x35);
             I2C_Write3152(0xff,0x33);
                
                                     
         }
         
         if (ave>l2)            //图像亮度过高
         { 
            if(ave-lp>2)
            {
               if(DGC>=0x25)
                 {DGC=DGC-0x05;}
                   if(DGC>=0x20) 
                    I2C_Write3152(DGC,0x33);
                    for(i=0; i<DELAY_SIZE; i++)
		{
			asm("nop;");
		}
                    if(AGC>=0x03)
                   {AGC=AGC-0x05;}
                   if(AGC>=0x00)
                   I2C_Write3152(AGC,0x35);
                   for(i=0; i<DELAY_SIZE; i++)
		{
			asm("nop;");
		}
            }
         }*/
         
            
	    
	      
	    /*sum=0;
	    InitPPI0(Set_Entire_Field, Set_PACK32, &DMA_PPI0_first, PIXEL_PER_LINE, LINES_PER_FRAME);
	    *pDMA1_0_CONFIG |= DMAEN;
	    ssync();
	    *pPPI0_CONTROL |= PORT_EN;
	    ssync();
	    }
	
	}*/
	while(1)
	{idle();
	}
	
}		// main