//W25X40??51單片機讀寫程序??
//華邦串行FLASH?W25X40?讀寫程序范例
//適用于華邦W25X系列，單通道模式；


#include?
#include?
#define?uint8?unsigned?char
#define?uint16?unsigned?int
#define?uchar?unsigned?char
#define?uint?unsigned?int
#define?uint32?unsigned?long

sbit?_cs=?P1^2;
sbit?_do=?P1^3;
sbit?_wp=?P1^4;
//sbit?_hold=?P1^5;
sbit?_clk=?P1^6;
sbit?_di=?P1^7;

#define?W25P_WriteEnable?0x06
#define?W25P_WriteDisable?0x04
#define?W25P_ReadStatusReg?0x05
#define?W25P_WriteStatusReg?0x01
#define?W25P_ReadData??0x03
#define?W25P_FastReadData?0x0B
#define?W25P_PageProgram?0x02
#define?W25P_SectorErase?0xD8?//?64KB
#define?W25P_ChipErase??0xC7
#define?W25P_PowerDown??0xB9
#define?W25P_ReleasePowerDown?0xAB
#define?W25P_DeviceID??0xAB
#define?W25P_ManufactDeviceID?0x90
?
void?init_cpu（void）;
void?IO_Send_Byte（uchar?out）;
uchar?IO_Get_Byte（）;
void?delay（uchar?tt）;
void?IO_Wait_Busy（）;
void?IO_init（）;
uchar?IO_Read_StatusReg（）;
void?IO_Write_StatusReg（byte）;
void?IO_Write_Enable（）;
void?IO_PowerDown（）;
void?IO_ReleasePowerDown（）;
uchar?IO_Read_ID1（）;
uint?IO_Read_ID2（uchar?ID_Addr）;
uchar?IO_Read_Byte（uint32?Dst_Addr）;
void?IO_Read_nBytes（uint32?Dst_Addr?uchar?nBytes_128）;
uchar?IO_FastRead_Byte（uint32?Dst_Addr）;
void?IO_FastRead_nBytes（uint32?Dst_Addr?uchar?nBytes_128）;
void?IO_Write_Byte（uint32?Dst_Addr?uchar?byte）;
void?IO_Write_nBytes（uint32?Dst_Addr?uchar?nBytes_128）;
void?IO_Erase_Chip（）;
void?IO_Erase_Sector（uint32?Dst_Addr）;
void?Verify（uchar?byte?uchar?cor_byte）;
void?IO_Write_Disable（）;
void?trace（uchar?*struchar?len）;
uint?IO_Read_ID3（）;

uint8?Rxtemp;
bit?MYTI;
uint8?tx_buff[16];
uint8?upper_128[16];
bit?rx_ok;
#define?nop（）?_nop_（）

void?main（void）
{?
?uint?i;
?
?init_cpu（）;?
?IO_init（）;
?for（;;）
?{???
??if（rx_ok?==?1）
??{
???rx_ok?=?0;
???switch（Rxtemp）
???{
????case?0x01:
?????Rxtemp?=?0;
?????tx_buff[0]?=?IO_Read_ID1（）;
?????trace（tx_buff1）;
?????break;
????case?0x02:
????i?=?IO_Read_ID2（0x00）;
????tx_buff[1]?=?（uchar）i;
????tx_buff[0]?=?（uchar）（i>>8）;
????trace（tx_buff2）;
????
????break;
????case?0x03:
????i?=?IO_Read_ID3（）;
????tx_buff[1]?=?（uchar）i;
????tx_buff[0]?=?（uchar）（i>>8）;
????trace（tx_buff3）;
????break;
????case?0x04:
????tx_buff[0]?=?IO_Read_Byte（0x00000000）;
????trace（tx_buff1）;
????break;
????case?0x05:
????tx_buff[0]?=?0x55;
????IO_Write_Byte（0x000000000xa5）;
????trace（tx_buff1）;
????break;
????case?0x06:
????tx_buff[0]?=?IO_Read_StatusReg（）;
????trace（tx_buff1）;
????break;
????case?0x07:
????IO_Write_Enable（）;?
????break;
????case?0x08:
????upper_128[0]=0x01;upper_128[1]=0x02;upper_128[2]=0x03;upper_128[3]=0x04;
????IO_Write_nBytes（0x000000004）;
????
????break;
????case?0x09:
????IO_Erase_Chip（）;
????break;
????case?0x0a:
????IO_Erase_Sector（0x00000000）;
????break;
????default:
????break;
???}
???
??}
??
???
?}
}

void?init_cpu（void）
{??
?TMOD?=?0x21;???
?PCON?=?PCON?|?0x80;??//波特率加