first commit
This commit is contained in:
minidso
198
S100App/Src/Ext_Flash.c
Normal file
198
S100App/Src/Ext_Flash.c
Normal file
@@ -0,0 +1,198 @@
|
||||
/********************* (C) COPYRIGHT 2015 e-Design Co.,Ltd. ********************
|
||||
File Name : EXT_Flash.c
|
||||
Version : S100 APP Ver 2.11
|
||||
Description:
|
||||
Author : bure
|
||||
Data:
|
||||
History:
|
||||
*******************************************************************************/
|
||||
|
||||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include "Ext_Flash.h"
|
||||
#include "BIOS.h"
|
||||
|
||||
|
||||
#define OK 0 // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||||
#define SEC_ERR 1 // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
|
||||
#define TMAX 100000 // <20><>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>
|
||||
|
||||
u32 Mass_Memory_Size;
|
||||
u32 Mass_Block_Size;
|
||||
u32 Mass_Block_Count;
|
||||
u32 Tout;
|
||||
|
||||
|
||||
u8 flash_mode;
|
||||
|
||||
void ExtFLASH_SectorErase(u32 SectorAddr);
|
||||
|
||||
/*******************************************************************************
|
||||
SPI_FLASH_SectorErase : Sector Erases the specified FLASH Page.(4k/sector)
|
||||
*******************************************************************************/
|
||||
void ExtFLASH_SectorErase(u32 SectorAddr)
|
||||
{
|
||||
ExtFlash_WriteEnable();
|
||||
ExtFlash_CS_LOW();
|
||||
ExtFlash_SendByte(SE);
|
||||
ExtFlash_SendByte((SectorAddr & 0xFF0000) >> 16); //Send high address byte
|
||||
ExtFlash_SendByte((SectorAddr & 0xFF00) >> 8); //Send medium address byte
|
||||
ExtFlash_SendByte(SectorAddr & 0xFF); //Send low address byte
|
||||
ExtFlash_CS_HIGH();
|
||||
ExtFlash_WaitForWriteEnd(); // Wait the end of Flash writing
|
||||
}
|
||||
|
||||
|
||||
void ExtFlash_PageWR(u8* pBuffer, u32 WriteAddr)
|
||||
{
|
||||
u32 addr,i,j;
|
||||
u8* ptr;
|
||||
u8 page=0,flag=0,write_mode;
|
||||
u8 buffer[256];
|
||||
|
||||
flag=0;
|
||||
if(flash_mode==FLASH_8M) {
|
||||
addr=WriteAddr & 0xFFF000;
|
||||
page=16;
|
||||
} else {
|
||||
page=1;
|
||||
addr=WriteAddr & 0xFFFF00;
|
||||
}
|
||||
while(page>0) {
|
||||
ExtFlash_PageRD((u8*)&buffer,addr, 256);
|
||||
for(j=0; j<255; j++) {
|
||||
if(buffer[j++]!=0xff) {
|
||||
flag=1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
addr+=256;
|
||||
page--;
|
||||
}
|
||||
if(flash_mode==FLASH_8M) {
|
||||
page=16;
|
||||
addr=WriteAddr & 0xFFF000;
|
||||
if(flag==1)ExtFLASH_SectorErase(addr);
|
||||
write_mode=PP;
|
||||
} else {
|
||||
page=1;
|
||||
addr=WriteAddr & 0xFFFF00;
|
||||
if(flag==1)write_mode=PW;
|
||||
else write_mode=PP;
|
||||
}
|
||||
ptr=pBuffer;
|
||||
for(i=0; i<page; i++) {
|
||||
ExtFlash_PageProg(ptr, addr,write_mode);
|
||||
addr+=256;
|
||||
ptr+=256;
|
||||
}
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
дFLASHҳ(256 Bytes)<29><> Mode=0: <20><>0<EFBFBD><30>1<EFBFBD><31><EFBFBD>ݸ<EFBFBD>д Mode=1: <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д
|
||||
*******************************************************************************/
|
||||
void ExtFlash_PageProg(u8* pBuffer, u32 WriteAddr,u8 CMD)
|
||||
{
|
||||
u16 Lenght = 256;
|
||||
|
||||
ExtFlash_CS_HIGH();
|
||||
ExtFlash_WaitForWriteEnd();
|
||||
ExtFlash_WriteEnable();
|
||||
ExtFlash_CS_LOW();
|
||||
ExtFlash_SendByte(CMD);
|
||||
ExtFlash_SendByte((WriteAddr & 0xFF0000) >> 16);
|
||||
ExtFlash_SendByte((WriteAddr & 0xFF00) >> 8);
|
||||
ExtFlash_SendByte(WriteAddr & 0xFF);
|
||||
while(Lenght--) { // while there is data to be written on the FLASH
|
||||
ExtFlash_SendByte((*pBuffer));
|
||||
pBuffer++;
|
||||
}
|
||||
ExtFlash_CS_HIGH();
|
||||
ExtFlash_WaitForWriteEnd();
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
SPI_FLASH_BufferRead
|
||||
*******************************************************************************/
|
||||
void ExtFlash_PageRD(u8* pBuffer, u32 ReadAddr, u16 Lenght)
|
||||
{
|
||||
ExtFlash_CS_HIGH();
|
||||
ExtFlash_WaitForWriteEnd();
|
||||
ExtFlash_CS_LOW();
|
||||
ExtFlash_SendByte(READ);
|
||||
ExtFlash_SendByte((ReadAddr & 0xFF0000) >> 16);
|
||||
ExtFlash_SendByte((ReadAddr& 0xFF00) >> 8);
|
||||
ExtFlash_SendByte(ReadAddr & 0xFF);
|
||||
|
||||
while(Lenght--) { // while there is data to be read
|
||||
*pBuffer = (ExtFlash_SendByte(Dummy_Byte));
|
||||
pBuffer++;
|
||||
}
|
||||
ExtFlash_CS_HIGH();
|
||||
}
|
||||
/*******************************************************************************
|
||||
SPI_FLASH_ReadByte
|
||||
*******************************************************************************/
|
||||
u8 ExtFlash_ReadByte(void)
|
||||
{
|
||||
return (ExtFlash_SendByte(Dummy_Byte));
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
SPI_FLASH_SendByte
|
||||
*******************************************************************************/
|
||||
u8 ExtFlash_SendByte(u8 byte)
|
||||
{
|
||||
Tout = 0;
|
||||
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_TXE) == RESET) {
|
||||
if(Tout++ > TMAX) return 255;
|
||||
}
|
||||
SPI_I2S_SendData(SPI3, byte);
|
||||
Tout = 0;
|
||||
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_RXNE) == RESET) {
|
||||
if(Tout++ > TMAX) return 255;
|
||||
}
|
||||
return SPI_I2S_ReceiveData(SPI3);
|
||||
}
|
||||
/*******************************************************************************
|
||||
SPI_FLASH_WriteEnable
|
||||
*******************************************************************************/
|
||||
void ExtFlash_WriteEnable(void)
|
||||
{
|
||||
ExtFlash_CS_LOW();
|
||||
ExtFlash_SendByte(WREN);
|
||||
ExtFlash_CS_HIGH();
|
||||
}
|
||||
/*******************************************************************************
|
||||
SPI_FLASH_WaitForWriteEnd
|
||||
*******************************************************************************/
|
||||
void ExtFlash_WaitForWriteEnd(void)
|
||||
{
|
||||
u8 FLASH_Status = 0;
|
||||
|
||||
ExtFlash_CS_LOW();
|
||||
ExtFlash_SendByte(RDSR);
|
||||
Tout = 0;
|
||||
do {
|
||||
FLASH_Status = ExtFlash_SendByte(Dummy_Byte);
|
||||
if(Tout++ > TMAX) return;
|
||||
} while((FLASH_Status & WIP_Flag) == SET); // Write in progress
|
||||
ExtFlash_CS_HIGH();
|
||||
}
|
||||
/*******************************************************************************
|
||||
MAL_GetStatus
|
||||
*******************************************************************************/
|
||||
void MAL_GetStatus (void)
|
||||
{
|
||||
if(flash_mode==FLASH_8M) {
|
||||
Mass_Block_Count = 2048; //FLASH_SIZE/FLASH_PAGE_SIZE;
|
||||
Mass_Block_Size = 512*8; //FLASH_PAGE_SIZE; 4096
|
||||
Mass_Memory_Size = 512*4096*4 ; //FLASH_SIZE; 0x800000;
|
||||
} else {
|
||||
Mass_Block_Count = 4096; //FLASH_SIZE/FLASH_PAGE_SIZE; 4096
|
||||
Mass_Block_Size = 512; //FLASH_PAGE_SIZE;
|
||||
Mass_Memory_Size = 512*4096 ; //FLASH_SIZE; 0x200000;
|
||||
}
|
||||
}
|
||||
|
||||
/********************************* END OF FILE ******************************/
|
||||
Reference in New Issue
Block a user