nandflash.c

针对K9F1208M FLASH的读写程序

#include  "config.h"
#include  "soucehead.h" 
extern unsigned char Data_buffer[0x200];
extern void  Display_hex(unsigned char hex,unsigned int window_start_x,unsigned  int window_start_y,unsigned long int color,char times_x,char times_y);

extern unsigned short int Image_data[];
extern long int FLASHCOM;
extern long int FLASHADDR;
extern long int FLASHDATA;
int Movie_current_block;

extern unsigned int LCD_x_size,LCD_y_size;
extern unsigned char LCD_code,LCD_data_mode,LCD_dots,BMP_start_block,BMP_block_number;
extern volatile unsigned char Menu_status,Menu_status_1,Menu_status_2;

extern void Delay(void);
extern void  Delay100ns(long int dly);
extern void  Delayms(long int dly);
extern void  UART0_SendByte(uint8 data);

extern unsigned long int RootDirAddr;
extern unsigned long int Data_start_Addr;
extern unsigned RootDirNum;
extern unsigned int RsvdSec;
extern unsigned char SecPerClus;

void Flash_page_program(unsigned long int flash_page_addr)
{
	unsigned int i;
	FLASHCS_ON;
	FLASHBUSY_WAIT();
	FLASHCOM=0x80;Delay100ns(1);
	FLASHADDR=0x00;Delay100ns(1);
	FLASHADDR=(flash_page_addr);Delay100ns(1);
	FLASHADDR=(flash_page_addr>>8);Delay100ns(1);
	FLASHADDR=(flash_page_addr>>16);	Delay100ns(10);
	for (i=0;i<512;i++)
	{
		FLASHDATA=Data_buffer[i];Delay100ns(1);	
	}
	FLASHCOM=0x10;	Delay100ns(1);
	FLASHBUSY_WAIT();
	FLASHCS_OFF;
}

void Flash_block_erase(unsigned int flash_block_addr)
{
	FLASHCS_ON;
	FLASHBUSY_WAIT();
	FLASHCOM=0x60;Delay100ns(1);	
	FLASHADDR=(flash_block_addr<<5);	Delay100ns(1);
	FLASHADDR=(flash_block_addr>>3);	Delay100ns(1);
	FLASHADDR=(flash_block_addr>>11);	Delay100ns(1);
	FLASHCOM=0xD0;	Delay100ns(10);
	FLASHBUSY_WAIT();Delay100ns(10);
	FLASHCS_OFF;
}

void Flash_page_read(unsigned long int flash_page_addr)
{
	unsigned int i;
	
	FLASHCS_ON;
	FLASHBUSY_WAIT();
	FLASHCOM=0x00;Delay100ns(1);
	FLASHADDR=0x00;Delay100ns(1);
	FLASHADDR=(flash_page_addr);Delay100ns(1);
	FLASHADDR=(flash_page_addr>>8);Delay100ns(1);
	FLASHADDR=(flash_page_addr>>16);	Delay100ns(1);
	FLASHBUSY_WAIT();Delay100ns(30);
	for (i=0;i<512;i++)
	{
		Data_buffer[i]=FLASHDATA;	Delay(); 
	}
		
	FLASHCS_OFF;
}

unsigned char Blank_Image(unsigned char image_size_format) 
{
	unsigned char i;
	Flash_page_read(ROOT_PAGE);
		
	if ((Data_buffer[image_size_format]&0x01)==0x00)
	{
	 	i=0; 
		Data_buffer[image_size_format]+=0x01;
	}	
	else
	{	if ((Data_buffer[image_size_format]&0x02)==0x00)
		{
			 i=1;
			 Data_buffer[image_size_format]+=0x02;
		}
		else
		{	if ((Data_buffer[image_size_format]&0x04)==0x00)
			{
		 		i=2;
		 		Data_buffer[image_size_format]+=0x04;
		 	}
			else
			{	if ((Data_buffer[image_size_format]&0x08)==0x00) 
				{
					i=3;
					Data_buffer[image_size_format]+=0x08;
				}
				else
				{	if((Data_buffer[image_size_format]&0x010)==0x00)
					{ 
						i=4;
						Data_buffer[image_size_format]+=0x10;
					}
					else
					{	if ((Data_buffer[image_size_format]&0x20)==0x00) 
						{
							i=5;
							Data_buffer[image_size_format]+=0x20;
						}
						else
						{ 	if ((Data_buffer[image_size_format]&0x40)==0x00) 
							{
								i=6;
								Data_buffer[image_size_format]+=0x40;
							}
							else
							{ 	if ((Data_buffer[image_size_format]&0x80)==0x00) 
								{
									i=7;
									Data_buffer[image_size_format]+=0x80;
								}
								else
								{
									i=0;
									Data_buffer[image_size_format]=0xFF;
								}
							}
						}
					}
				}
			}
		}
	}
	
	
		
	Flash_block_erase(ROOT_BLOCK);
	Flash_page_program(ROOT_PAGE);	
	
					
	return i;
}				

unsigned char Blank_Image_1(unsigned char image_size_format) 
{
	unsigned char i;
	Flash_page_read(ROOT_PAGE);
		
	if ((Data_buffer[image_size_format]&0x01)==0x00)
	{
	 	i=0; 
	}	
	else
	{	if ((Data_buffer[image_size_format]&0x02)==0x00)
		{
			 i=1;
		}
		else
		{	if ((Data_buffer[image_size_format]&0x04)==0x00)
			{
		 		i=2;
		 	}
			else
			{	if ((Data_buffer[image_size_format]&0x08)==0x00) 
				{
					i=3;
					}
				else
				{	if((Data_buffer[image_size_format]&0x010)==0x00)
					{ 
						i=4;
						
					}
					else
					{	if ((Data_buffer[image_size_format]&0x20)==0x00) 
						{
							i=5;
							
						}
						else
						{ 	if ((Data_buffer[image_size_format]&0x40)==0x00) 
							{
								i=6;
								
							}
							else
							{ 	if ((Data_buffer[image_size_format]&0x80)==0x00) 
								{
									i=7;
									;
								}
								else
								{
									i=0;
									
								}
							}
						}
					}
				}
			}
		}
	}
	
	
		

	
					
	return i;
}				

unsigned char Blank_Image_movie() 
{
	unsigned char i;
	Flash_page_read(ROOT_PAGE);
	i=Data_buffer[0x0f-Menu_status_2];
	Data_buffer[0x0f-Menu_status_2]++;	
	Flash_block_erase(ROOT_BLOCK);
	Flash_page_program(ROOT_PAGE);		
	UART0_SendByte(Data_buffer[0x0f-Menu_status_2]);	
	return i;
}				


void File_to_flash()
{
	unsigned long int i;
	unsigned long int j;
	unsigned long int block_number,file_size,image_size,block_addr; 
	unsigned long int page_number;
	unsigned long int page_addr,data_addr;
	unsigned int file_format;

	data_addr=RECEIVEBUFFER;
	
	file_format=Image_data[RECEIVEBUFFER]&0x0000FFFF; 
	if (file_format==0x4D42)              //BMP
	{
		file_size=((Image_data[RECEIVEBUFFER]&0xFFFF0000)>>16)+((Image_data[RECEIVEBUFFER+1]&0x0000FFFF)<<16);
		image_size=((Image_data[RECEIVEBUFFER+4]&0xFFFF0000))+((Image_data[RECEIVEBUFFER+5]&0xFFFF0000)>>16);
		switch(image_size)
		{
			case 0x00600040:          		//96*64
			{ 
				block_addr=32+Blank_Image(0)*2;
			}
			break;
			case 0x00800080:			//128*128
			{
				block_addr=48+Blank_Image(1)*4;
			}
			break;
			case 0x008000A0:            //128*160
			{
				block_addr=80+Blank_Image(2)*4;
			}
			break;
			case 0x00B000DC:             //LCD_x_size*LCD_y_size
			{
				block_addr=112+Blank_Image(3)*8;
			}
			break;
			case 0x00F00140:			//240*320
			{
				block_addr=176+Blank_Image(4)*15;
			}
			break;
			case 0x00800060:			
			{
				block_addr=1024+(Menu_status_2*768)+Blank_Image_movie()*3;
				if (block_addr>=ROOT_BLOCK)  block_addr=1024+(2*768);
						
			}
			break;
			case 0x00940094:			
			{
				block_addr=1005;
							}
			break;
			default:
			{
			}
			
		}
	}	
			
	if (file_format==0x2222)              //logo
	{
		file_size=((Image_data[RECEIVEBUFFER+0]&0xFFFF0000)>>16)+((Image_data[RECEIVEBUFFER+1]&0x0000FFFF)<<16);
		block_addr=0;
	}
	if(file_format==0x4947)
	{	file_size=0x1c5f6;
		block_addr=112+Blank_Image(3)*8;
  	}
	block_number=(file_size>>14)+1;
	page_number=(file_size>>9)+1;
	page_addr=block_addr*32;
	for (i=0;i<block_number;i++)
	{
		Flash_block_erase(block_addr+i);
	}

	for (i=0;i<page_number;i++)
	{
		for(j=0;j<0x80;j++)
		{
			Data_buffer[j*4]=Image_data[data_addr]&0x000000ff;  
			Data_buffer[j*4+1]=(Image_data[data_addr]&0x0000ff00)>>8;
			Data_buffer[j*4+2]=(Image_data[data_addr]&0x00ff0000)>>16;
			Data_buffer[j*4+3]=(Image_data[data_addr]&0xff000000)>>24;
			data_addr++;
		}
		Flash_page_program(page_addr+i);