求ASCII转HEX和HEX转ASCII的算法

huamao

如题

zlf667788

求你给我点钱

hemjidn

好象超简单的。

coole

取之于该网站，服务于该网站。下面是我在该网站上找的，希望对你有用。
void hex_to_ascii(unsigned char dat)
{
    unsigned char dat_buff;
  
    dat_buff = dat;
    dat = dat&0x0f;
    if((dat>=0)&&(dat<=9))
    {
       dat += 0x30;
    }
    else
       dat += 0x37;
        UART_TX_buff[7] = dat;
          
    dat = dat_buff;
        dat >>= 4;
        dat = dat&0x0f;
    if((dat>=0)&&(dat<=9))
    {
      dat += 0x30;
    }
    else
      dat += 0x37;
        UART_TX_buff[8] = dat;
}
void ascii_to_hex(void)
{
    unsigned char cnt,i;
   
        for(cnt=0,i=0;cnt<6;cnt++,cnt++,i++)
        {
          Twi_Hex_Data = Twi_ASCI_Data[cnt+1];//先放ASCII的高位(四位)
          Twi_Hex_Data <<= 4;
          Twi_Hex_Data += Twi_ASCI_Data[cnt];
        }
}

zhuzi1441

记号，谢谢

huamao

谢谢大家哈，

lovefei

这种问题应该自己多考虑的！多查查资料，建议！

yinhe

记号

nicksean

#define Hex2Ascii(data)  (data < 10)? ('0' + data) : ('A' + data - 10)

void Byte2ASCII(unsigned char data, unsigned char *pBuf)
{
    unsigned char temp;

    temp = data & 0x0F;
    pBuf[1] = Hex2Ascii(temp);

    temp = data >> 4;
    pBuf[0] = Hex2Ascii(temp);
}

这个短点

nicksean

再加上两字节的:
#define Hex2Ascii(data)  (data < 10)? ('0' + data) : ('A' + data - 10)
void Byte2ASCII(unsigned char data, unsigned char *pBuf)
{
    unsigned char temp;
   
    temp = data & 0x0F;
    pBuf[1] = Hex2Ascii(temp);
   
    temp = data >> 4;
    pBuf[0] = Hex2Ascii(temp);
}


void Uint2ASCII(unsigned short data, unsigned char *pBuf)
{
    unsigned char temp;
   
    temp = (unsigned char)(data & 0x000F);
    pBuf[3] = Hex2Ascii(temp);
   
    data >>= 4;
    temp = (unsigned char)(data & 0x000F);
    pBuf[2] = Hex2Ascii(temp);
   
    data >>= 4;
    temp = (unsigned char)(data & 0x000F);
    pBuf[1] = Hex2Ascii(temp);
   
    data >>= 4;
    temp = (unsigned char)(data);
    pBuf[0] = Hex2Ascii(temp);
}

#define Ascii2Hex(data)  (data >= '0' && data <= '9')? (data - '0') : ((data >= 'A' && data <= 'F')? (data - 'A' + 10) : ((data >= 'a' && data <= 'f')? (data - 'a' + 10) : 0))
unsigned char ASCII2Byte(unsigned char *pBuf)
{
    unsigned char temp;
    unsigned char c;
   
    c = *pBuf++;
    temp = ((unsigned char)Ascii2Hex(c)) << 4;
    c = *pBuf;
    temp += Ascii2Hex(c);
   
    return temp;
}

unsigned short ASCII2Uint(unsigned char *pBuf)
{
    unsigned short temp;
    unsigned char c;
   
    c = *pBuf++;
    temp = ((unsigned short)Ascii2Hex(c)) << 12;
    c = *pBuf++;
    temp += ((unsigned short)Ascii2Hex(c)) << 8;
    c = *pBuf++;
    temp += ((unsigned short)Ascii2Hex(c)) << 4;
    c = *pBuf;
    temp += Ascii2Hex(c);
   
    return temp;
}

stevenlu

mark！要用到时再看

hanbao0371

好东西，谢谢分享了，TO nicksean 不务正业，向你学习

TongIC

nicksean 发表于 2008-4-19 09:49
再加上两字节的:
#define Hex2Ascii(data)  (data < 10)? ('0' + data) : ('A' + data - 10)
void Byte2ASC ...

好算法，谢谢分享！

nicksean

不客气，希望对你有用

lingdianhao

这个算法很简单啊！自己写就好了！