image.c

瑞萨单片机开发软代码.非常实用小巧的平台,很多应用都可以在上面实现.

#include <machine.h> 
#include <string.h> 
#include "flashdisk.h"
#include "genEcc.h"
#include "h8s2215.h"
#include "sci.h"

#define IMG_BLK_SIZE  2048
#define IMG_FILE_ID	"_LCD_IMAGE"
#define IMG_ADDR_START_16M 50
#define BLOCK_SIZE 16384

#define LITTLE

#ifdef  LITTLE
unsigned long GetLong( unsigned char *buf ) 
{
	return ((unsigned long)(buf[0])|(((unsigned long)buf[1])<<8)|(((unsigned long)buf[2])<<16)|(((unsigned long)buf[3])<<24));
}
unsigned short GetShort( unsigned char *buf)
{
 	return ((unsigned short)(buf[0])|(((unsigned short)buf[1])<<8));
}
#else
unsigned long GetLong( unsigned char *buf ) 
{
	return ((unsigned long)(buf[3])|(((unsigned long)buf[2])<<8)|(((unsigned long)buf[1])<<16)|(((unsigned long)buf[0])<<24));
}
unsigned short GetShort( unsigned char *buf)
{
 	return ((unsigned short)(buf[1])|(((unsigned short)buf[0])<<8));
}
#endif

extern unsigned char g_filecnt, g_FileID;
struct _disk_map
{
	unsigned char	disk_size;
	//disk_size			16M:1,	32M:2,	64M:4,	128M:8,		256M:16,	512M:32,	1024M:64
	//addr_img_blk		50		50		...		
	//addr_param_blk	950		1950	...
	//addr_reserved		1000	2020	...
	unsigned long	addr_img_blk;
	unsigned long	addr_param_blk;
	unsigned long	addr_reserved;
}map_disk;

extern FLASH_RW flash_rw;
extern DATA_BUFF Cache[];
 
unsigned long dwAddrImg;
unsigned long dwFileSize;

unsigned short* GetImgBuf( int ImgID );
int IsExistImgFile( int FileID, unsigned long *FileSize,unsigned short *wWidth, unsigned short *wHeight );
int init_img_disk();

// usage:
// 1. check the image file is exist
// 2. get the image buf
unsigned short* GetImgBuf( int ImgID )
{
	int i;

#if 1
    ChipSelect_F1                                // chip select
//	for( i =0; i<4; i++ )
	{
//		flash_rw.addr = dwAddrImg+ImgID*4+1+i;
		flash_rw.addr = dwAddrImg+ImgID;
	    flash_rw.length = 512;
//	    flash_rw.buff_ptr = &Cache->data_buff[0+512*i];
	    flash_rw.buff_ptr = &Cache->data_buff[0];
	    fread_sector_no_ecc();
	}
	De_ChipSelect_F1
#endif
#if 0
    ChipSelect_F1                                // chip select
//	for( i=0; i<4; i++ )
	{
//		flash_rw.addr = dwAddrImg+ImgID*4+1+i;
		flash_rw.addr = dwAddrImg+ImgID;
	    flash_rw.length = 512;
//	    flash_rw.buff_ptr = &Cache->data_buff[0+512*i];
	    flash_rw.buff_ptr = &Cache->data_buff[0];
	    fread_data(0);
	}
	De_ChipSelect_F1
#endif	
	return (unsigned short*)&Cache->data_buff[0];
}

int IsExistImgFile( int FileID, unsigned long *FileSize ,unsigned short *wWidth, unsigned short *wHeight)
{
	int i,j;

	dwAddrImg = map_disk.addr_img_blk*32;//50*32
   // dwAddrImg = dwAddrImg+FileID*((dwFileSize+512)/BLOCK_SIZE+1)*32;
	dwAddrImg = dwAddrImg+FileID*32*5;
    ChipSelect_F1                                // chip select
	for( i=0; i<5; i++ )
	{
		flash_rw.addr = dwAddrImg;
	    flash_rw.length = 22;
	    flash_rw.buff_ptr = &Cache->ReadCache.Buf[0];
	    fread_data(0);
		if( !memcmp( &Cache->ReadCache.Buf[0], IMG_FILE_ID, 10 ) )
		{
		    SCI_Str("\r\nDebug the data: ");

			for( j =0 ; j<22; j++ )
			{
				SCI_HexB( Cache->ReadCache.Buf[j] );
				SCI_Char(' ');
			}

		    SCI_Str("\r\n");

			*FileSize = GetLong( &Cache->ReadCache.Buf[10] );

			*wWidth   = GetShort( &Cache->ReadCache.Buf[14] );

			*wHeight  = GetShort( &Cache->ReadCache.Buf[18] );

			break;	
		}
		dwAddrImg += 32;
	}
	De_ChipSelect_F1

	if( i == 6 )
	{
		SCI_Str("\r\nCan't find the image file ID = 0x=: ");
		SCI_Hex( (unsigned long)FileID );
		SCI_Str("\r\n");
		return 1;
	}
	else
	{
		SCI_Str("\r\nFind the image file, File ID = 0x");
	    SCI_Hex((unsigned long)FileID); 
		SCI_Str("Addr = 0x");
	    SCI_Hex((unsigned long)dwAddrImg); 
		SCI_Str("FileSize = 0x");
	    SCI_Hex((unsigned long)*FileSize); 
		SCI_Str("wWidth = 0x");
	    SCI_HexS((unsigned short)*wWidth); 
		SCI_Str("Height = 0x");
	    SCI_HexS((unsigned short)*wHeight); 
		dwAddrImg++;
		return 0;
	}
}

int init_img_disk()
{
	int i=1,j, ret=0;

	map_disk.disk_size = 1;
	map_disk.addr_img_blk = IMG_ADDR_START_16M;
	map_disk.addr_param_blk = 950;

	dwAddrImg = map_disk.addr_img_blk*32;
	g_filecnt = 0;

    ChipSelect_F1                                // chip select

	while( i<800 )
	{
	    flash_rw.addr = dwAddrImg;
	    flash_rw.length = 22;
	    flash_rw.buff_ptr = &Cache->ReadCache.Buf[0];
	    fread_data(0);
	
		Cache->ReadCache.Buf[10] = 0;

		if( !memcmp( &Cache->ReadCache.Buf[0], IMG_FILE_ID, 10 ) )
		{

			if( g_filecnt == 0 )
				map_disk.addr_img_blk = dwAddrImg/32;
					
			dwFileSize = GetLong( &Cache->ReadCache.Buf[10] );

	       	SCI_Str("\r\nFind the image : Address=0x");
	       	SCI_Hex((unsigned long)dwAddrImg); 
	       	SCI_Str("\r\nThis image size: dwFileSize=0x");
	       	SCI_Hex((unsigned long)dwFileSize); 
		    SCI_Str("\r\nDebug the data: ");

			for( j =0 ; j<22; j++ )
			{
				SCI_HexB( Cache->ReadCache.Buf[j] );
				SCI_Char(' ');
			}

		    SCI_Str("\r\n");
			g_filecnt++;
		}
		dwAddrImg+=32;
		i++;
	}

   	SCI_Str("\r\nFind 0x ");
   	SCI_Hex((unsigned long)g_filecnt ); 
   	SCI_Str(" images\r\n");

   	SCI_Str("\r\nThe Image Size: dwFileSize=0x");
   	SCI_Hex((unsigned long)dwFileSize); 
    SCI_Str("\r\nDebug the data: ");

	De_ChipSelect_F1

}

void debug_flash()
{
	int i = 1, j;

    ChipSelect_F1                                // chip select
	while( i )
	{
	    flash_rw.addr = (unsigned long)i*32;
	    flash_rw.length = 22;
	    flash_rw.buff_ptr = &Cache->ReadCache.Buf[0];
	    fread_data(0);
	    SCI_Str("\r\nDebug the data: ");

		for( j =0 ; j<22; j++ )
		{
			SCI_HexB( Cache->ReadCache.Buf[j] );
			SCI_Char(' ');
		}

	    SCI_Str("\r\n");
		i++;

		if( i>=1024 )
			break;
	}
	De_ChipSelect_F1

}