在线等！哪位大侠用过三星NAND FLASH K9K8G08U0A

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在线等！哪位大侠用过三星NAND FLASH K9K8G08U0A [复制链接]

小弟我最近再用NAND FLASH K9K8G08U0A（8Gbit）作为DSP2812的外扩存储器，我是用IO口模拟时序进行读写，按照三星的技术文档现在写了页写（Page _Write）和页读(Page_Read)两个函数，把一页写入数据（如：1，2，3，4，5等，一页共2112*8bit），读出来的全是0xFF,哪位用过的大侠来指点下啊，源程序如下：

//=========Flash  专用头文件  （定义了一些IO口和变量还有函数）================
#include"DSP281x_Device.h"    // DSP281x Headerfile Include File
#include"DSP281x_Examples.h" // DSP281x Examples Include File

#define FLASH_IO0  GpioDataRegs.GPADAT.bit.GPIOA0
#define FLASH_IO1  GpioDataRegs.GPADAT.bit.GPIOA1
#define FLASH_IO2  GpioDataRegs.GPADAT.bit.GPIOA2
#define FLASH_IO3  GpioDataRegs.GPADAT.bit.GPIOA3
#define FLASH_IO4  GpioDataRegs.GPADAT.bit.GPIOA4
#define FLASH_IO5  GpioDataRegs.GPADAT.bit.GPIOA5
#define FLASH_IO6  GpioDataRegs.GPADAT.bit.GPIOA6
#define FLASH_IO7  GpioDataRegs.GPADAT.bit.GPIOA7

#define FLASH_RB GpioDataRegs.GPDDAT.bit.GPIOD0
#define FLASH_RE GpioDataRegs.GPDDAT.bit.GPIOD1

#define FLASH_CLE GpioDataRegs.GPADAT.bit.GPIOA11
#define FLASH_ALE GpioDataRegs.GPADAT.bit.GPIOA12

#define FLASH_WE GpioDataRegs.GPADAT.bit.GPIOA13
#define FLASH_WP GpioDataRegs.GPADAT.bit.GPIOA14

#define FLASH_Delay DSP28x_usDelay

#define FLASH_Port FLASH_IO0+(FLASH_IO1<<1)+(FLASH_IO2<<2)+(FLASH_IO3<<3)+(FLASH_IO4<<4)+(FLASH_IO5<<5)+(FLASH_IO6<<6)+(FLASH_IO7<<7)

extern void  Page_Write(Uint32 Address,Uchar *Array,Uint16  ArrayLength);
extern void  Page_Read(Uint32 Address,Uchar *Array,Uint16  ArrayLength);

extern void AddConver(Uint32 Address);
extern void  InputPort(Uchar Command);
extern void  WriteCmd(Uchar Command);
extern void  WriteData(Uchar Data);
extern Uchar  ReadData(void);
extern void  WriteAdd(Uint32  Address);
extern Uchar FLASH_ReadStatus(Uchar Command);

注：另有DSP定义口为IO还是外设口，输入还是输出的函数我就没有放上来

//==========下面就是页写和页读函数=====================

//===页写函数====================
void  Page_Write(Uint32 Address,Uchar *Array,Uint16  ArrayLength)
{
Uint16 i;
Uchar Statustemp;

FLASH_WP =1;
FLASH_RE = 1;

WriteCmd(0x80);

WriteAdd(Address);

FLASH_CLE = 0;
FLASH_ALE = 0;
FLASH_Delay(2);  //FLASH_Delay(1)大约为7ns

for(i=0;i {
WriteData(*(Array+i));
}

WriteCmd(0x10);

while(FLASH_RB == 0);
FLASH_Delay(2);

Statustemp = FLASH_ReadStatus(0x70);

if((Statustemp & 0x01) == 1) //检验写是否出错，我写的时候这个标志没有置位，说明没有出错
{
ERR = 1;
}

}

void  Page_Read(Uint32 Address,Uchar *Array,Uint16  ArrayLength)
{
Uint16 i;

WriteCmd(0x00);
WriteAdd(Address);
WriteCmd(0x30);

while(FLASH_RB == 0);

FLASH_RE = 1;
FLASH_CLE = 0;
FLASH_WE = 1;
FLASH_ALE = 0;

FLASH_Delay(2);

//==========I/O 0- I/O 7设置为输入==================
EALLOW;
GpioMuxRegs.GPADIR.bit.GPIOA0 = 0;
GpioMuxRegs.GPADIR.bit.GPIOA1 = 0;
GpioMuxRegs.GPADIR.bit.GPIOA2 = 0;
GpioMuxRegs.GPADIR.bit.GPIOA3 = 0;
GpioMuxRegs.GPADIR.bit.GPIOA4 = 0;
GpioMuxRegs.GPADIR.bit.GPIOA5 = 0;
GpioMuxRegs.GPADIR.bit.GPIOA6 = 0;
GpioMuxRegs.GPADIR.bit.GPIOA7 = 0;
EDIS;

for(i=0;i {
*(Array+i) = ReadData();
}

}

//=========写命令函数======================
void  WriteCmd(Uchar Command)
{

FLASH_WP =1;

while(FLASH_RB == 0);

FLASH_Delay(3);

FLASH_ALE = 0;
FLASH_CLE = 1;
FLASH_WE = 0;

InputPort(Command);
FLASH_Delay(2);

FLASH_WE = 1;
FLASH_CLE = 0;

}

//==========写数据函数============================
void  WriteData(Uchar Data)
{

FLASH_WE = 0;

InputPort(Data);

FLASH_Delay(1);

FLASH_WE = 1;

FLASH_Delay(1);

}

//==========读数据命令=================
Uchar  ReadData(void)
{
Uchar Rdata;

//==========I/O 0-I/O 7为输入口===========

FLASH_RE = 0;
FLASH_Delay(2);
Rdata = FLASH_Port;  /*读取1B*/
FLASH_RE = 1;
FLASH_Delay(2);

return(Rdata);
}

//=========写地址函数========================
void  WriteAdd(Uint32 Address)
{
Uint16 i;

AddConver(Address);

FLASH_CLE = 0;

for(i=0;i<5;i++)
{
while(FLASH_RB == 0);

FLASH_ALE = 1;
FLASH_WE = 0;

switch(i)
{
case 0:
InputPort(CAdd1);
break;
case 1:
InputPort(CAdd2);
break;
case 2:
InputPort(RAdd1);
break;
case 3:
InputPort(RAdd2);
break;
case 4:
InputPort(RAdd3);
break;
}

FLASH_Delay(2);

FLASH_WE = 1;
FLASH_Delay(1);

//=========页写的时序图中在地址写入时ALE一直为高=========
// FLASH_ALE = 0;
// FLASH_Delay(2);

}

}

Uchar FLASH_ReadStatus(Uchar Command)
{
Uchar StatusData;

WriteCmd(Command);
FLASH_Delay(8);
FLASH_RE = 0;
FLASH_Delay(1);

StatusData = FLASH_Port;

FLASH_RE = 1;

FLASH_Delay(2);

return(StatusData);

}

void  InputPort(Uchar Command)
{
//==========I/O 0-I/O 7最为输出口===========
EALLOW;
GpioMuxRegs.GPADIR.bit.GPIOA0 = 1;
GpioMuxRegs.GPADIR.bit.GPIOA1 = 1;
GpioMuxRegs.GPADIR.bit.GPIOA2 = 1;
GpioMuxRegs.GPADIR.bit.GPIOA3 = 1;
GpioMuxRegs.GPADIR.bit.GPIOA4 = 1;
GpioMuxRegs.GPADIR.bit.GPIOA5 = 1;
GpioMuxRegs.GPADIR.bit.GPIOA6 = 1;
GpioMuxRegs.GPADIR.bit.GPIOA7 = 1;
EDIS;

//========I/O 0的值=================
if(Command & 0x01)
{
FLASH_IO0 = 1;
}
else
{
FLASH_IO0 = 0;
}

//========I/O 1的值=================
if(Command & 0x02)
{
FLASH_IO1 = 1;
}
else
{
FLASH_IO1 = 0;
}

//========I/O 2的值=================
if(Command & 0x04)
{
FLASH_IO2 = 1;
}
else
{
FLASH_IO2 = 0;
}

//========I/O 3的值=================
if(Command & 0x08)
{
FLASH_IO3 = 1;
}
else
{
FLASH_IO3 = 0;
}

//========I/O 4的值=================
if(Command & 0x10)
{
FLASH_IO4 = 1;
}
else
{
FLASH_IO4 = 0;
}

//========I/O 5的值=================
if(Command & 0x20)
{
FLASH_IO5 = 1;
}
else
{
FLASH_IO5 = 0;
}

//========I/O 6的值=================
if(Command & 0x40)
{
FLASH_IO6 = 1;
}
else
{
FLASH_IO6 = 0;
}

//========I/O 7的值=================
if(Command & 0x80)
{
FLASH_IO7 = 1;
}
else
{
FLASH_IO7 = 0;
}

}

void AddConver(Uint32 Address)
{
CAdd1 = (Uchar)(Address & 0x000000FF);
CAdd2 = (Uchar)((Address & 0x00000F00)>>8);

RAdd1 = (Uchar)((Address & 0x000FF000)>>12);
RAdd2 = (Uchar)((Address & 0x0FF00000)>>20);
RAdd3 = (Uchar)((Address & 0xF0000000)>>28);

}

大侠们帮我看看啊我都困扰了好几天了，不知道是不是有什么问题，用过的帮帮忙啊，谢谢了