www.pudn.com > ADSP-BF561_MicronSensorExample_I2C_ASM_in_C.zip > main.c

/*****************************************************************************/ 
/*****************************************************************************/ 
/**                                                                         **/ 
/** (C) Copyright 2003 - Analog Devices, Inc.  All rights reserved.         **/ 
/**                                                                         **/ 
/*****************************************************************************/ 
/*****************************************************************************/ 
 
/*****************************************************************************/ 
/*               ADI DSP Division, EMP, Munich                               */ 
/*****************************************************************************/ 
/* 
 * 
 * FILE NAME	: main.c	 
 * 
 * DATE         : $Date: 2006/02/22 10:09:41 $ 
 * 
 * AUTHOR(S)    : $Author: ANALOG\tlorenz $ 
 * 
 * REVISION NO. : $Revision: 1.3 $ 
 * 
 * HISTORY      : $Log: main.c,v $ 
 * HISTORY      : Revision 1.2  2005/06/21 10:09:41  ANALOG\tlorenz 
 * HISTORY      : no message 
 * HISTORY      : 
 * HISTORY      : Revision 1.1.1.1  2005/04/12 06:59:32  ANALOG\tlorenz 
 * HISTORY      : start point 
 * HISTORY      : 
 * HISTORY      : 
 *  
 * DESCRIPTION  : Configuration via I2C and download images from the  
 *				  Micron image sensor "MT9V022" 
 * 
 * SOFTWARE		: VisualDSP++4.5 
 * 
 * HARDWARE		: ADSP-BF561 EZ-KIT  
 * 
 *  date        author          changes 
 *  22-JAN-2006 T. Lorenzen       final release 
 * 
 * 
 *****************************************************************************/ 
#include  
#include  
#include  
#include  
#include "main.h" 
 
 
#define CFG_GP_Input_3Syncs 	0x0020 
#define GP_Input_Mode			0x000C 
#define STOP_MODE				0x0000 
#define AUTOBUFFER_MODE			0x1000 
 
#define POL_C 			0x0000 
#define POL_S 			0x0000 
#define PIXEL_PER_LINE	720 
#define LINES_PER_FRAME	480 
 
#define DMA_COUNT_DIV	1 
#define DATALEN			0x0800		// 10-bit bus 
#define	DataPacking		0x0000		// packing disabled=0x0000 
 
#define PPICOUNT		719 
 
 
/************************************************************/ 
/*********** Prototypes *************************************/ 
/************************************************************/ 
void VideoSensorFrameCapture ( unsigned short *usPTR ); 
void MI350_init(void); 
/************************************************************/ 
 
 
/************************************************************/ 
/************* Variable Definitions *************************/ 
/************************************************************/ 
 
section ("sdram_data") volatile unsigned short VideoInputFrame[LINES_PER_FRAME][PIXEL_PER_LINE]; 
volatile unsigned short *usDestAddr; 
 
extern int result; 
/************************************************************/ 
 
void main() { 
 
	usDestAddr = &VideoInputFrame[0][0];				// init the pointer with the start addr of the array 
 
	// initialise Micron Sensor 
	MI350_init(); 
 
	VideoSensorFrameCapture ( (void*) usDestAddr );		// function call 
 
	printf ("DMA done \n"); 
 
	while(1); 
}; 
 
 
void VideoSensorFrameCapture ( unsigned short *usPTR ){ 
 
	// configure DMA for PPI0 
	*pDMA1_0_X_COUNT = PIXEL_PER_LINE/DMA_COUNT_DIV;	// pixels per line	 
	*pDMA1_0_Y_COUNT = LINES_PER_FRAME;					// lines per frame from the sensor 
	*pDMA1_0_X_MODIFY = 2;								// Modifier 2 because of 16-bit DMA mode 
	*pDMA1_0_Y_MODIFY = 2;								// Modifier 2 because of 16-bit DMA mode 
	*pDMA1_0_START_ADDR = usPTR;						// Destination address of the image 
 
	// Autobuffer mode DMA | Restart FIFO | 2-D DMA | Bus width 16 bit | write to memory  
	*pDMA1_0_CONFIG = AUTOBUFFER_MODE | RESTART | DMA2D | WDSIZE_16 | WNR; 
 
	// PPI0 setup 
	*pPPI0_FRAME = LINES_PER_FRAME;	//The PPI is set to receive X lines per frame 
	*pPPI0_COUNT = PPICOUNT;		//The PPI is set to stop receiving after X number of samples for each liene 
 
	// Fetching data at the raising (MT9V022) edge of PCLK| PPI 10-bit bus | PPI input with three frame syncs 
	*pPPI0_CONTROL = POL_S | POL_C | DATALEN | DataPacking | CFG_GP_Input_3Syncs | GP_Input_Mode; 
 
	*pDMA1_0_CONFIG |= DMAEN;	// | DMA enable 
	ssync(); 
	*pPPI0_CONTROL |= PORT_EN;	// | Start PPI 
	ssync(); 
}