Show_str();只能显示字符串不能显示汉字

liushuifong

采用原子大哥的程序，做汉字显示实验，只能显示字符串不能显示汉字；但做图片显示实验，中文图片的名字能正常显示，不知道是什么原因？

miaoguoqiang

没有加入汉字库

正点原子

回复【楼主位】liushuifong:
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下载我们原版代码测试下.
不过你那板子,貌似不是我们的板子哦...

liushuifong

回复【2楼】miaoguoqiang:
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没加汉字库？后面获取图片的名称，怎么就能正确显示汉字？

liushuifong

回复【3楼】正点原子:
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确实不是原子大哥的开发板，以前买的时候没发现你们的开发板，资料这么好。所以现在一般跟着你们的资料在学习。谢谢
我用的Flash是M25P16，M25P16驱动代码：

/*********************
M25P16 flash硬件说明：
    PA4---CS
    PA5---CLK
    PA6---MISO
    PA7---MOSI
**********************/    
u32 SPI_FLASH_TYPE;

//4Kbytes为一个Sector
//16个扇区为1个Block
//W25X16
//容量为2M字节,共有32个Block,512个Sector

//初始化SPI FLASH的IO口
void SPI_Flash_Init(void)
{
    RCC->APB2ENR|=1<<0;
    RCC->APB2ENR|=1<<2;       //PORTA时钟使能
    RCC->APB2ENR|=1<<3;   //PORTB时钟使能
    RCC->APB2ENR|=1<<5;      //PORTD时钟使能

    //将PB7上拉，防止XPT2406干扰Flash
    GPIOB->CRL&=0X0FFFFFFF;//PB7推挽
    GPIOB->CRL|=0X30000000;//PB7上拉
    GPIOB->ODR|=1<<7;

    GPIOA->CRL&=0XFFF0FFFF;
    GPIOA->CRL|=0X00030000;//PA4 推挽     
    GPIOA->ODR|=1<<4;    //PA4上拉

    //LED初始化
    GPIOD->CRH&=0XFF0FFFFF;
    GPIOD->CRH|=0X00300000;
    GPIOD->ODR|=1<<13;
    SPI1_Init();     //初始化SPI
    SPI1_SetSpeed(div2);
    SPI_FLASH_TYPE=SPI_Flash_ReadID();//读取FLASH ID.
    printf("FLASH_ID:0X%04X\n",SPI_FLASH_TYPE);
    SPI_Flash_WAKEUP();//唤醒一下
} 

//读取SPI_FLASH的状态寄存器
//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
u8 SPI_Flash_ReadSR(void)  
{  
     u8 byte=0;   
     SPI_FLASH_CS(0);                            //使能器件   
     SPI1_ReadWriteByte(W25X_ReadStatusReg);    //发送读取状态寄存器命令    
     byte=SPI1_ReadWriteByte(0Xff);             //读取一个字节  
     SPI_FLASH_CS(1);                            //取消片选     
     return byte;  
}
//写SPI_FLASH状态寄存器
//只有SPR,TB,BP2,BP1,BP0(bit 7,5,4,3,2)可以写!!!
void SPI_FLASH_Write_SR(u8 sr)  
{   
     SPI_FLASH_CS(0);                            //使能器件   
     SPI1_ReadWriteByte(W25X_WriteStatusReg);   //发送写取状态寄存器命令    
     SPI1_ReadWriteByte(sr);               //写入一个字节  
     SPI_FLASH_CS(1);                            //取消片选           
}  
//SPI_FLASH写使能 
//将WEL置位  
void SPI_FLASH_Write_Enable(void)  
{
     SPI_FLASH_CS(0);                            //使能器件   
     SPI1_ReadWriteByte(W25X_WriteEnable);      //发送写使能  
     SPI_FLASH_CS(1);                            //取消片选           
}
//SPI_FLASH写禁止 
//将WEL清零 
void SPI_FLASH_Write_Disable(void)  
{  
     SPI_FLASH_CS(0);                            //使能器件  
     SPI1_ReadWriteByte(W25X_WriteDisable);     //发送写禁止指令    
     SPI_FLASH_CS(1);                            //取消片选           
}       
//读取芯片ID W25X16的ID:0XEF14
u16 SPI_Flash_ReadID(void)
{
     u16 Temp = 0;   
     SPI_FLASH_CS(0);        
     SPI1_ReadWriteByte(0x9f);//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);  
     SPI_FLASH_CS(1);        
     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 SPI_Flash_Read(u8* pBuffer,u32 ReadAddr,u16 NumByteToRead)  
{ 
    u16 i;                 
    SPI_FLASH_CS(0);                            //使能器件  
    SPI1_ReadWriteByte(W25X_ReadData);         //发送读取命令  
    SPI1_ReadWriteByte((u8)((ReadAddr)>>16));  //发送24bit地址   
    SPI1_ReadWriteByte((u8)((ReadAddr)>>8));  
    SPI1_ReadWriteByte((u8)ReadAddr);  
    for(i=0;i<NumByteToRead;i++)
    {
        pBuffer=SPI1_ReadWriteByte(0XFF);   //循环读数 
    }
    SPI_FLASH_CS(1);                            //取消片选           
} 
//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 SPI_Flash_Write_Page(const u8 *pBuffer,u32 WriteAddr,u16 NumByteToWrite)
{
    u16 i; 
    SPI_FLASH_Write_Enable();                  //SET WEL
    SPI_FLASH_CS(0);                            //使能器件  
    SPI1_ReadWriteByte(W25X_PageProgram);      //发送写页命令  
    SPI1_ReadWriteByte((u8)((WriteAddr)>>16)); //发送24bit地址   
    SPI1_ReadWriteByte((u8)((WriteAddr)>>8));  
    SPI1_ReadWriteByte((u8)WriteAddr);  
    for(i=0;i<NumByteToWrite;i++)SPI1_ReadWriteByte(pBuffer);//循环写数 
    SPI_FLASH_CS(1);                            //取消片选
    SPI_Flash_Wait_Busy();        //等待写入结束
}
//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!
//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65535)
void SPI_Flash_Write_NoCheck(const u8 *pBuffer,u32 WriteAddr,u16 NumByteToWrite)  
{        
     u16 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)
     {    
          SPI_Flash_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
          }
     };    
}
//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!
//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65535)      
u8 SPI_FLASH_BUF[4096];          
void SPI_Flash_Write(const u8 *pBuffer,u32 WriteAddr,u16 NumByteToWrite)  
{ 
     u32 secpos;
     u16 secoff;
     u16 secremain;    
      u16 i;
    // u8 SPI_FLASH_BUF[4096];   

     secpos=WriteAddr/4096;//扇区地址 0~511 for w25x16
     secoff=WriteAddr%4096;//在扇区内的偏移
     secremain=4096-secoff;//扇区剩余空间大小  

     if(NumByteToWrite<=secremain)secremain=NumByteToWrite;//不大于4096个字节
     while(1) 
     { 
          SPI_Flash_Read(SPI_FLASH_BUF,secpos*4096,4096);//读出整个扇区的内容
          for(i=0;i<secremain;i++)//校验数据
          {
               if(SPI_FLASH_BUF[secoff+i]!=0XFF)break;//需要擦除     
          }
          if(i<secremain)//需要擦除
          {
               SPI_Flash_Erase_Sector(secpos);//擦除这个扇区
               for(i=0;i<secremain;i++)    //复制
               {
                    SPI_FLASH_BUF[i+secoff]=pBuffer;   
               }
               SPI_Flash_Write_NoCheck(SPI_FLASH_BUF,secpos*4096,4096);//写入整个扇区 

          }else SPI_Flash_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
//整片擦除时间:
//W25X16:25s
//W25X32:40s
//W25X64:40s
//等待时间超长...
void SPI_Flash_Erase_Chip(void)  
{                                            
     SPI_FLASH_Write_Enable();                  //SET WEL
     SPI_Flash_Wait_Busy();  
     SPI_FLASH_CS(0);                            //使能器件  
     SPI1_ReadWriteByte(W25X_ChipErase);        //发送片擦除命令  
     SPI_FLASH_CS(1);                            //取消片选            
     SPI_Flash_Wait_Busy();          //等待芯片擦除结束
}  
//擦除一个扇区
//Dst_Addr:扇区地址 0~511 for w25x16
//擦除一个山区的最少时间:150ms
void SPI_Flash_Erase_Sector(u32 Dst_Addr)  
{  
    Dst_Addr*=4096;
    SPI_FLASH_Write_Enable();                  //SET WEL  
    SPI_Flash_Wait_Busy();  
    SPI_FLASH_CS(0);                            //使能器件  
    SPI1_ReadWriteByte(W25X_SectorErase);      //发送扇区擦除指令
    SPI1_ReadWriteByte((u8)((Dst_Addr)>>16));  //发送24bit地址   
    SPI1_ReadWriteByte((u8)((Dst_Addr)>>8));  
    SPI1_ReadWriteByte((u8)Dst_Addr); 
    SPI_FLASH_CS(1);                            //取消片选           
    SPI_Flash_Wait_Busy();          //等待擦除完成
} 
//等待空闲
void SPI_Flash_Wait_Busy(void)  
{   
     while ((SPI_Flash_ReadSR()&0x01)==0x01);   // 等待BUSY位清空
} 
//进入掉电模式
void SPI_Flash_PowerDown(void)  
{
    SPI_FLASH_CS(0);                            //使能器件  
    SPI1_ReadWriteByte(W25X_PowerDown);        //发送掉电命令 
    SPI_FLASH_CS(1);                            //取消片选           
    Delay_us(30);                               //等待TPD 
}  
//唤醒
void SPI_Flash_WAKEUP(void)  
{ 
    SPI_FLASH_CS(0);                            //使能器件  
    SPI1_ReadWriteByte(W25X_ReleasePowerDown);   //  send W25X_PowerDown command 0xAB   
    SPI_FLASH_CS(1);                            //取消片选           
    Delay_us(30);                               //等待TRES1
}

miaoguoqiang

回复【4楼】liushuifong:
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不知道是不是例程不同的原因。我没看例程，不太清楚。

liushuifong

回复【6楼】miaoguoqiang:
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谢谢