440 lines
13 KiB
C++
440 lines
13 KiB
C++
#include "w25qxx.h"
|
||
uint16_t W25QXX_TYPE = 0XFFFF; //默认是W25Q128
|
||
|
||
//4Kbytes为一个Sector
|
||
//16个扇区为1个Block
|
||
//W25Q128
|
||
//容量为16M字节,共有256个Block,4096个Sector
|
||
static void delayus(uint32_t nus){
|
||
volatile uint32_t i;
|
||
while (nus-- > 0){
|
||
i = 26;
|
||
while (i-- > 0);
|
||
}
|
||
}
|
||
/**
|
||
* @brief 初始化SPI,ESP32一共用4个SPI，能用的有两个.
|
||
*
|
||
*/
|
||
void SPI1S_Init(void){
|
||
// gpio init
|
||
// pinMode(NORFLASH_HOLD_PIN, OUTPUT);
|
||
// pinMode(NORFLASH_WP_PIN, OUTPUT);
|
||
// digitalWrite(NORFLASH_HOLD_PIN, HIGH); //保持
|
||
// digitalWrite(NORFLASH_WP_PIN, HIGH); //写保护
|
||
#ifdef HARDWARE_SPI
|
||
//使用硬件SPI
|
||
SPI.begin(NORFLASH_CLK_PIN, NORFLASH_MISO_PIN, NORFLASH_MOSI_PIN, NORFLASH_CS_PIN);
|
||
SPI.setDataMode(SPI_MODE0);
|
||
SPI.setBitOrder(MSBFIRST);
|
||
SPI.setFrequency(SPI_FREQUENCY);
|
||
// SPI.setFrequency(1000000*20);
|
||
pinMode(NORFLASH_CS_PIN, OUTPUT);
|
||
#endif
|
||
#ifdef SOFTWARE_SPI
|
||
//使用软件模拟SPI
|
||
pinMode(NORFLASH_CLK_PIN, OUTPUT);
|
||
pinMode(NORFLASH_MOSI_PIN, OUTPUT);
|
||
pinMode(NORFLASH_MISO_PIN, INPUT);
|
||
pinMode(NORFLASH_CS_PIN, OUTPUT);
|
||
|
||
digitalWrite(NORFLASH_CS_PIN,HIGH);
|
||
digitalWrite(NORFLASH_CLK_PIN,LOW);
|
||
delay(1);
|
||
#endif
|
||
#ifdef FLASH_TEST_ENABLE
|
||
/* readwrite test */
|
||
int g = 0;
|
||
uint8_t str[1280];
|
||
memset(str, 0, sizeof(str));
|
||
unsigned int j = 0;
|
||
for(int k=0; k < 5; k++)
|
||
{
|
||
for(int i = 0; i < 256; i++)
|
||
{
|
||
str[j] = i;
|
||
j++;
|
||
}
|
||
}
|
||
Serial.println("");
|
||
Serial.println("-----write data-------");
|
||
W25QXX_CS0;
|
||
W25QXX_Erase_Sector(0x00);
|
||
W25QXX_Write(str,0x10,256);
|
||
memset(str, 0, sizeof(str));
|
||
W25QXX_Read(str,0x00,512);
|
||
W25QXX_CS1;
|
||
Serial.println("str:");
|
||
for(int k = 0; k < 512; k++) {
|
||
if(g == 16){
|
||
Serial.println("|");
|
||
if(k % 256 == 0) Serial.println("---------------");
|
||
{
|
||
g = 1;
|
||
}
|
||
}
|
||
else {
|
||
g++;
|
||
}
|
||
Serial.printf("%02X ", str[k]);
|
||
}
|
||
#endif
|
||
}
|
||
/**
|
||
* @brief 读写一个字节
|
||
*
|
||
* @param TxData 要写入的字节
|
||
* @return uint8_t 读取到的字节
|
||
*/
|
||
uint8_t SPI1_ReadWriteByte(uint8_t TxData)
|
||
{
|
||
uint8_t Rxdata;
|
||
#ifdef HARDWARE_SPI
|
||
Rxdata = SPI.transfer(TxData);
|
||
return Rxdata;
|
||
#endif
|
||
#ifdef SOFTWARE_SPI
|
||
uint8_t i = 0, Rxdata = 0;
|
||
for(i = 0; i < 8; i++)
|
||
{
|
||
digitalWrite(NORFLASH_CLK_PIN, HIGH);
|
||
digitalWrite(NORFLASH_CLK_PIN, LOW);
|
||
if(digitalRead(NORFLASH_MISO_PIN))
|
||
{
|
||
Rxdata |= 0x80 >> i;
|
||
}
|
||
}
|
||
return Rxdata;
|
||
#endif
|
||
return Rxdata; //返回收到的数据
|
||
}
|
||
|
||
/**
|
||
* @brief 初始化SPI FLASH的IO口
|
||
*
|
||
*/
|
||
void W25QXX_Init(void)
|
||
{
|
||
SPI1S_Init(); //初始化SPI
|
||
W25QXX_TYPE = W25QXX_ReadID(); //读取FLASH ID.
|
||
}
|
||
|
||
//读取W25QXX的状态寄存器，W25QXX一共有3个状态寄存器
|
||
//状态寄存器1：
|
||
//BIT7 6 5 4 3 2 1 0
|
||
//SPR RV TB BP2 BP1 BP0 WEL BUSY
|
||
//SPR:默认0,状态寄存器保护位,配合WP使用
|
||
//TB,BP2,BP1,BP0:FLASH区域写保护设置
|
||
//WEL:写使能锁定
|
||
//BUSY:忙标记位(1,忙;0,空闲)
|
||
//默认:0x00
|
||
//状态寄存器2：
|
||
//BIT7 6 5 4 3 2 1 0
|
||
//SUS CMP LB3 LB2 LB1 (R) QE SRP1
|
||
//状态寄存器3：
|
||
//BIT7 6 5 4 3 2 1 0
|
||
//HOLD/RST DRV1 DRV0 (R) (R) WPS ADP ADS
|
||
//regno:状态寄存器号，范:1~3
|
||
//返回值:状态寄存器值
|
||
/**
|
||
* @brief 读取W25QXX的状态寄存器
|
||
*
|
||
* @param regno 状态寄存器号，范:1~3
|
||
* @return uint8_t 状态寄存器值
|
||
*/
|
||
uint8_t W25QXX_ReadSR(uint8_t regno)
|
||
{
|
||
uint8_t byte=0,command=0;
|
||
switch(regno)
|
||
{
|
||
case 1:
|
||
command = W25X_ReadStatusReg1; //读状态寄存器1指令
|
||
break;
|
||
case 2:
|
||
command = W25X_ReadStatusReg2; //读状态寄存器2指令
|
||
break;
|
||
case 3:
|
||
command = W25X_ReadStatusReg3; //读状态寄存器3指令
|
||
break;
|
||
default:
|
||
command = W25X_ReadStatusReg1;
|
||
break;
|
||
}
|
||
W25QXX_CS0; //使能器件
|
||
SPI1_ReadWriteByte(command); //发送读取状态寄存器命令
|
||
byte=SPI1_ReadWriteByte(0Xff); //读取一个字节
|
||
W25QXX_CS1; //取消片选
|
||
return byte;
|
||
}
|
||
//写W25QXX状态寄存器
|
||
void W25QXX_Write_SR(uint8_t regno,uint8_t sr)
|
||
{
|
||
uint8_t command=0;
|
||
switch(regno)
|
||
{
|
||
case 1:
|
||
command=W25X_WriteStatusReg1; //写状态寄存器1指令
|
||
break;
|
||
case 2:
|
||
command=W25X_WriteStatusReg2; //写状态寄存器2指令
|
||
break;
|
||
case 3:
|
||
command=W25X_WriteStatusReg3; //写状态寄存器3指令
|
||
break;
|
||
default:
|
||
command=W25X_WriteStatusReg1;
|
||
break;
|
||
}
|
||
W25QXX_CS0; //使能器件
|
||
SPI1_ReadWriteByte(command); //发送写取状态寄存器命令
|
||
SPI1_ReadWriteByte(sr); //写入一个字节
|
||
W25QXX_CS1; //取消片选
|
||
}
|
||
//W25QXX写使能
|
||
//将WEL置位
|
||
void W25QXX_Write_Enable(void)
|
||
{
|
||
W25QXX_CS0; //使能器件
|
||
SPI1_ReadWriteByte(W25X_WriteEnable); //发送写使能
|
||
W25QXX_CS1; //取消片选
|
||
}
|
||
//W25QXX写禁止
|
||
//将WEL清零
|
||
void W25QXX_Write_Disable(void)
|
||
{
|
||
W25QXX_CS0; //使能器件
|
||
SPI1_ReadWriteByte(W25X_WriteDisable); //发送写禁止指令
|
||
W25QXX_CS1; //取消片选
|
||
}
|
||
|
||
//读取芯片ID
|
||
//返回值如下:
|
||
//0XEF13,表示芯片型号为W25Q80
|
||
//0XEF14,表示芯片型号为W25Q16
|
||
//0XEF15,表示芯片型号为W25Q32
|
||
//0XEF16,表示芯片型号为W25Q64
|
||
//0XEF17,表示芯片型号为W25Q128
|
||
//0XEF18,表示芯片型号为W25Q256
|
||
uint16_t W25QXX_ReadID(void)
|
||
{
|
||
uint16_t Temp = 0;
|
||
W25QXX_CS0;
|
||
SPI1_ReadWriteByte(0x90);//发送读取ID命令
|
||
SPI1_ReadWriteByte(0x00);
|
||
SPI1_ReadWriteByte(0x00);
|
||
SPI1_ReadWriteByte(0x00);
|
||
Temp|=SPI1_ReadWriteByte(0xFF)<<8;
|
||
Temp|=SPI1_ReadWriteByte(0xFF);
|
||
W25QXX_CS1;
|
||
return Temp;
|
||
}
|
||
//读取SPI FLASH
|
||
//在指定地址开始读取指定长度的数据
|
||
//pBuffer:数据存储区
|
||
//ReadAddr:开始读取的地址(24bit)
|
||
//NumByteToRead:要读取的字节数(最大65535)
|
||
void W25QXX_Read(uint8_t* pBuffer,uint32_t ReadAddr,uint16_t NumByteToRead)
|
||
{
|
||
uint16_t i;
|
||
W25QXX_CS0; //使能器件
|
||
SPI1_ReadWriteByte(W25X_ReadData); //发送读取命令
|
||
if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的，要发送最高8位
|
||
{
|
||
SPI1_ReadWriteByte((uint8_t)((ReadAddr)>>24));
|
||
}
|
||
SPI1_ReadWriteByte((uint8_t)((ReadAddr)>>16)); //发送24bit地址
|
||
SPI1_ReadWriteByte((uint8_t)((ReadAddr)>>8));
|
||
SPI1_ReadWriteByte((uint8_t)ReadAddr);
|
||
for(i=0; i<NumByteToRead; i++)
|
||
{
|
||
pBuffer[i]=SPI1_ReadWriteByte(0XFF); //循环读数
|
||
}
|
||
W25QXX_CS1;
|
||
}
|
||
//SPI在一页(0~65535)内写入少于256个字节的数据
|
||
//在指定地址开始写入最大256字节的数据
|
||
//pBuffer:数据存储区
|
||
//WriteAddr:开始写入的地址(24bit)
|
||
//NumByteToWrite:要写入的字节数(最大256),该数不应该超过该页的剩余字节数!!!
|
||
void W25QXX_Write_Page(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite)
|
||
{
|
||
uint16_t i;
|
||
W25QXX_Write_Enable(); //SET WEL
|
||
W25QXX_CS0; //使能器件
|
||
SPI1_ReadWriteByte(W25X_PageProgram); //发送写页命令
|
||
if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的，要发送最高8位
|
||
{
|
||
SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>24));
|
||
}
|
||
SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>16)); //发送24bit地址
|
||
SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>8));
|
||
SPI1_ReadWriteByte((uint8_t)WriteAddr);
|
||
for(i=0; i<NumByteToWrite; i++)SPI1_ReadWriteByte(pBuffer[i]); //循环写数
|
||
W25QXX_CS1; //取消片选
|
||
W25QXX_Wait_Busy(); //等待写入结束
|
||
}
|
||
/**
|
||
* @brief 只能写入一页的数据，刚好256字节.
|
||
*
|
||
* @param pBuffer 待写入的数据256字节
|
||
* @param WriteAddr flash的首地址，确保是页的开头地址。
|
||
* @return uint8_t 错误返回1，完成返回0
|
||
*/
|
||
uint8_t W25QXX_Write_Page_Only(uint8_t* pBuffer,uint16_t WriteAddr){
|
||
uint16_t i;
|
||
if ((WriteAddr%256)!=0){
|
||
return 1; //要写入的地址不是页首地址就直接返回
|
||
}
|
||
W25QXX_Write_Enable(); //SET WEL
|
||
W25QXX_CS0; //使能器件
|
||
SPI1_ReadWriteByte(W25X_PageProgram); //发送写页命令
|
||
if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的，要发送最高8位
|
||
{
|
||
SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>24));
|
||
}
|
||
SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>16)); //发送24bit地址
|
||
SPI1_ReadWriteByte((uint8_t)((WriteAddr)>>8));
|
||
SPI1_ReadWriteByte((uint8_t)WriteAddr);
|
||
SPI.writeBytes(pBuffer,256); //写256个数据
|
||
W25QXX_CS1; //取消片选
|
||
W25QXX_Wait_Busy(); //等待写入结束
|
||
return 0;
|
||
}
|
||
/**
|
||
* @brief 无检验写SPI FLASH必须确保所写的地址范围内的数据全部为0XFF,否则在非0XFF处写入的数据将失败!具有自动换页功能
|
||
* 在指定地址开始写入指定长度的数据,但是要确保地址不越界!
|
||
*
|
||
* @param pBuffer 数据存储区
|
||
* @param WriteAddr 开始写入的地址(24bit)
|
||
* @param NumByteToWrite 要写入的字节数(最大65535)
|
||
*/
|
||
void W25QXX_Write_NoCheck(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite)
|
||
{
|
||
uint16_t pageremain;
|
||
pageremain=256-WriteAddr%256; //单页剩余的字节数
|
||
if(NumByteToWrite<=pageremain)pageremain=NumByteToWrite;//不大于256个字节
|
||
while(1)
|
||
{
|
||
W25QXX_Write_Page(pBuffer,WriteAddr,pageremain);
|
||
if(NumByteToWrite==pageremain)break;//写入结束了
|
||
else //NumByteToWrite>pageremain
|
||
{
|
||
pBuffer+=pageremain;
|
||
WriteAddr+=pageremain;
|
||
|
||
NumByteToWrite-=pageremain; //减去已经写入了的字节数
|
||
if(NumByteToWrite>256)pageremain=256; //一次可以写入256个字节
|
||
else pageremain=NumByteToWrite; //不够256个字节了
|
||
}
|
||
};
|
||
}
|
||
uint8_t W25QXX_BUFFER[4096];
|
||
/**
|
||
* @brief 写SPI FLASH在指定地址开始写入指定长度的数据.该函数带擦除操作!此函数全局定义了一数组uint8_t W25QXX_BUFFER[4096];
|
||
*
|
||
* @param pBuffer 存储区
|
||
* @param WriteAddr 数据开始写入的地址(24bit)
|
||
* @param NumByteToWrite 要写入的字节数(最大65535)
|
||
*/
|
||
void W25QXX_Write(uint8_t* pBuffer,uint32_t WriteAddr,uint32_t NumByteToWrite)
|
||
{
|
||
uint32_t secpos;
|
||
uint16_t secoff;
|
||
uint16_t secremain;
|
||
uint16_t i;
|
||
uint8_t * W25QXX_BUF;
|
||
W25QXX_BUF=W25QXX_BUFFER;
|
||
secpos=WriteAddr/4096;//扇区地址
|
||
secoff=WriteAddr%4096;//在扇区内的偏移
|
||
secremain=4096-secoff;//扇区剩余空间大小
|
||
// printf("ad:%X,nb:%X\r\n",WriteAddr,NumByteToWrite);//测试用
|
||
if(NumByteToWrite <= secremain) secremain = NumByteToWrite; //不大于扇区剩余空间大小
|
||
while(1)
|
||
{
|
||
W25QXX_Read(W25QXX_BUF,secpos*4096,4096);//读出整个扇区的内容
|
||
for(i=0; i<secremain; i++) //校验数据
|
||
{
|
||
if(W25QXX_BUF[secoff+i]!=0XFF) break;//需要擦除
|
||
}
|
||
if(i<secremain)//需要擦除
|
||
{
|
||
W25QXX_Erase_Sector(secpos);//擦除这个扇区
|
||
for(i=0; i<secremain; i++) //复制
|
||
{
|
||
W25QXX_BUF[i+secoff]=pBuffer[i];
|
||
}
|
||
W25QXX_Write_NoCheck(W25QXX_BUF,secpos*4096,4096);//写入整个扇区
|
||
|
||
}
|
||
else W25QXX_Write_NoCheck(pBuffer,WriteAddr,secremain); //写已经擦除了的,直接写入扇区剩余区间.
|
||
if(NumByteToWrite==secremain) break;//写入结束了
|
||
else//写入未结束
|
||
{
|
||
secpos++;//扇区地址增1
|
||
secoff=0;//偏移位置为0
|
||
|
||
pBuffer+=secremain; //指针偏移
|
||
WriteAddr+=secremain;//写地址偏移
|
||
NumByteToWrite-=secremain; //字节数递减
|
||
if(NumByteToWrite>4096)secremain=4096; //下一个扇区还是写不完
|
||
else secremain=NumByteToWrite; //下一个扇区可以写完了
|
||
}
|
||
};
|
||
}
|
||
//擦除整个芯片
|
||
//等待时间超长...
|
||
void W25QXX_Erase_Chip(void)
|
||
{
|
||
W25QXX_Write_Enable(); //SET WEL
|
||
W25QXX_Wait_Busy();
|
||
W25QXX_CS0; //使能器件
|
||
SPI1_ReadWriteByte(W25X_ChipErase); //发送片擦除命令
|
||
W25QXX_CS1; //取消片选
|
||
W25QXX_Wait_Busy(); //等待芯片擦除结束
|
||
}
|
||
/**
|
||
* @brief 擦除一个扇区,擦除一个扇区的最少时间:150ms
|
||
*
|
||
* @param Dst_Addr 扇区地址 根据实际容量设置
|
||
*/
|
||
void W25QXX_Erase_Sector(uint32_t Dst_Addr)
|
||
{
|
||
//监视falsh擦除情况,测试用
|
||
//printf("fe:%x\r\n",Dst_Addr);
|
||
Dst_Addr*=4096;
|
||
W25QXX_Write_Enable(); //SET WEL
|
||
W25QXX_Wait_Busy();
|
||
W25QXX_CS0; //使能器件
|
||
SPI1_ReadWriteByte(W25X_SectorErase); //发送扇区擦除指令
|
||
if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的，要发送最高8位
|
||
{
|
||
SPI1_ReadWriteByte((uint8_t)((Dst_Addr)>>24));
|
||
}
|
||
SPI1_ReadWriteByte((uint8_t)((Dst_Addr)>>16)); //发送24bit地址
|
||
SPI1_ReadWriteByte((uint8_t)((Dst_Addr)>>8));
|
||
SPI1_ReadWriteByte((uint8_t)Dst_Addr);
|
||
W25QXX_CS1; //取消片选
|
||
W25QXX_Wait_Busy(); //等待擦除完成
|
||
}
|
||
//等待空闲
|
||
void W25QXX_Wait_Busy(void)
|
||
{
|
||
while((W25QXX_ReadSR(1)&0x01)==0x01); // 等待BUSY位清空
|
||
}
|
||
//进入掉电模式
|
||
void W25QXX_PowerDown(void)
|
||
{
|
||
W25QXX_CS0; //使能器件
|
||
SPI1_ReadWriteByte(W25X_PowerDown); //发送掉电命令
|
||
W25QXX_CS1; //取消片选
|
||
delayus(3); //等待TPD
|
||
}
|
||
//唤醒
|
||
void W25QXX_WAKEUP(void)
|
||
{
|
||
W25QXX_CS0; //使能器件
|
||
SPI1_ReadWriteByte(W25X_ReleasePowerDown); // send W25X_PowerDown command 0xAB
|
||
W25QXX_CS1; //取消片选
|
||
delayus(3); //等待TRES1
|
||
}
|