[原创]单片机 HexToStr and HexToBcd BcdToStr

网上的很多例子都是不好用的

我这个是我验证过的，大家可以放心用啊

//------------------------------------------
//适合于9999以下的数据转换
// 9999 -> 0x270F Max
//
unsigned int uHex2Bcd_SubFunction(uint16_t sbcd_data)
{
    if ((sbcd_data&0x0f)>9)
    {
        sbcd_data=sbcd_data+6;
    }
    if ((sbcd_data&0x00f0)>0x90)
    {
        sbcd_data=sbcd_data+0x60;
    }
    if ((sbcd_data&0x0f00)>0x0900)
    {
        sbcd_data=sbcd_data+0x600;
    }
    if ((sbcd_data&0xf000)>0x9000)
    {
        sbcd_data=sbcd_data+0x6000;
    }
    return(sbcd_data);
} 


unsigned int uHex2Bcd (unsigned int hex_data)

{
    unsigned int bcd_data;
    unsigned char temp;
 
    temp=hex_data&0x0f;
    if (temp>9)
    {
        bcd_data=temp+6;
    }
    else
    {
        bcd_data=temp;
    }
    temp=(hex_data>>4)&0x0f;
    for (;temp>0;temp--)
    {
        bcd_data=bcd_data+0x16;
        bcd_data=uHex2Bcd_SubFunction(bcd_data);
    }
    temp=(hex_data>>8)&0x0f;
    for (;temp>0;temp--)
    {
        bcd_data=bcd_data+0x256;
        bcd_data=uHex2Bcd_SubFunction(bcd_data);
    }
    temp=(hex_data>>12)&0x0f;
    for (;temp>0;temp--)
    {
        bcd_data=bcd_data+0x4096;
        bcd_data=uHex2Bcd_SubFunction(bcd_data);
    }
    return(bcd_data);

}



//========================================================================

uint8_t uInt_HexToStr(void * pDest,void * pSrc,uint8_t Bytes_Of_Src)
{
    uint8_t aHex[4];
    uint8_t Tmp;
    uint8_t *pDest2;
    uint8_t *pSrc2; 
    
    if ((Bytes_Of_Src==1) || (Bytes_Of_Src==2) ||(Bytes_Of_Src==4))
    {    
        pDest2 = pDest;    
        pSrc2  = pSrc;
        
        if (Bytes_Of_Src==1)
        {
            aHex[0] = *pSrc2;  
        }
        
        if (Bytes_Of_Src==2)
        {
            aHex[0] = *(pSrc2+1);
            aHex[1] = *pSrc2;  
        }
        
        if (Bytes_Of_Src==4)
        { 
            aHex[0] = *(pSrc2+3);
            aHex[1] = *(pSrc2+2);        
            aHex[2] = *(pSrc2+1);
            aHex[3] = *pSrc2;       
        }
        
        Tmp = (aHex[0]&0xf0)>>4;
        (Tmp<10) ? (Tmp=Tmp+0x30) : (Tmp=Tmp+0x37);           
        *pDest2=Tmp;
                     
        Tmp = (aHex[0]&0x0f);
        (Tmp<10) ? (Tmp=Tmp+0x30) : (Tmp=Tmp+0x37);     

        *(pDest2+1)=Tmp;
        
        
        if (Bytes_Of_Src>=2)
        {
            Tmp = (aHex[1]&0xf0)>>4;
            (Tmp<10) ? (Tmp=Tmp+0x30) : (Tmp=Tmp+0x37);           
            *(pDest2+2)=Tmp;
                         
            Tmp = (aHex[1]&0x0f);
            (Tmp<10) ? (Tmp=Tmp+0x30) : (Tmp=Tmp+0x37);     
            *(pDest2+3)=Tmp;
        }
        //----------------------------------------------
        if (Bytes_Of_Src>=4)
        {
            Tmp = (aHex[2]&0xf0)>>4;
            (Tmp<10) ? (Tmp=Tmp+0x30) : (Tmp=Tmp+0x37);           
            *(pDest2+4)=Tmp;
                         
            Tmp = (aHex[2]&0x0f);
            (Tmp<10) ? (Tmp=Tmp+0x30) : (Tmp=Tmp+0x37);     

            *(pDest2+5)=Tmp;
            
            Tmp = (aHex[3]&0xf0)>>4;
            (Tmp<10) ? (Tmp=Tmp+0x30) : (Tmp=Tmp+0x37);           
            *(pDest2+6)=Tmp;
                         
            Tmp = (aHex[3]&0x0f);
            (Tmp<10) ? (Tmp=Tmp+0x30) : (Tmp=Tmp+0x37);     
            *(pDest2+7)=Tmp;  
        } 
        
        Tmp=1; // 执行完毕     
    }
    else
    {
        Tmp=0; // 源数据字节长度不符合要求，只能是2或者4 字节
    }
    
    return Tmp; //返回执行结果：1-正常，0-异常
    
}

以下是调用举例，把数据发送到串口，显示在电脑的串口调试软件上

void uUSART_Test(void)
{
    
    /* 局部变量定义 */
    char src[50];
    uint32_t aaa;

    aaa=0x270f;
    
    uInt_HexToStr(src,&aaa,2);
    uUART_PutStr_Len(USART1," 0x",3);
    uUART_PutStr_Len(USART1,(uint8_t *)src,4);
    //uUART_PutStr(USART1,"
");    
    
    bbb=uHex2Bcd(aaa);
    uInt_HexToStr(src,&bbb,2);
    uUART_PutStr_Len(USART1," -> ",4);
    uUART_PutStr_Len(USART1,(uint8_t *)src,4);
    uUART_PutStr(USART1,"
");   
    
}

电脑显示

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