Created
February 18, 2020 17:08
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BCD Converter.c
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| int Hexascii(unsigned char *dest, unsigned char *src, int size) | |
| { | |
| int i; | |
| if (size > 0) | |
| { | |
| for (i = 0; i < (size / 2); i++) | |
| { | |
| *(dest + (2 *i)) = ((*(src + i) &0xF0) >> 4) + 0x30; | |
| if (*(dest + (2 *i)) > 0x39) | |
| *(dest + (2 *i)) += 0x07; | |
| *(dest + (2 *i) + 1) = (*(src + i) &0x0F) + 0x30; | |
| if (*(dest + (2 *i) + 1) > 0x39) | |
| *(dest + (2 *i) + 1) += 0x07; | |
| } | |
| if (size % 2 != 0) | |
| { | |
| /* traitement size impaire */ | |
| *(dest + (2 *i)) = ((*(src + i) &0xF0) >> 4) + 0x30; | |
| if (*(dest + (2 *i)) > 0x39) | |
| *(dest + (2 *i)) += 0x07; | |
| } | |
| return (0); | |
| } | |
| else | |
| return (1); | |
| } | |
| unsigned long ulHextoLongLittle(unsigned long l, unsigned char *buff) | |
| { | |
| unsigned char buffA34 [5]; | |
| memset(buffA34,0x00,sizeof buffA34); | |
| buffA34[0]=(int)((l & 0xFF000000)>>24); | |
| buffA34[1]=(int)((l & 0x00FF0000)>>16); | |
| buffA34[2]=(int)((l & 0x0000FF00)>>8); | |
| buffA34[3]=(int)((l & 0x000000FF)); | |
| memcpy(buff, buffA34,4); | |
| return l; | |
| } | |
| unsigned long ulHextoLongBig(unsigned long l, unsigned char *buff) | |
| { | |
| unsigned char buffA34 [5]; | |
| memset(buffA34,0x00,sizeof buffA34); | |
| buffA34[3]=(int)((l & 0xFF000000)>>24); | |
| buffA34[2]=(int)((l & 0x00FF0000)>>16); | |
| buffA34[1]=(int)((l & 0x0000FF00)>>8); | |
| buffA34[0]=(int)((l & 0x000000FF)); | |
| memcpy(buff, buffA34,4); | |
| return l; | |
| } | |
| unsigned long ucLittletoLong(unsigned char * input)// only support 4 | |
| { | |
| unsigned char buff[5]; | |
| memset(buff, 0x00, sizeof buff); | |
| buff[0]=input[3]; | |
| buff[1]=input[2]; | |
| buff[2]=input[1]; | |
| buff[3]=input[0]; | |
| return HextoLong(buff, 4); | |
| } | |
| unsigned long HextoLong( unsigned char * input,int len) | |
| { | |
| unsigned long retAmt=0; | |
| char temp[100]; | |
| int i,m=1; | |
| i=len*2; | |
| memset(temp,0x00,sizeof temp); | |
| Hexascii(temp,input, i); | |
| i--; | |
| while (i>=0) | |
| { | |
| if (temp[i] >= '0' && temp[i] <= '9') | |
| retAmt=retAmt+((int)temp[i]-48)*m; | |
| if ((temp[i] >= 'A' && temp[i] <= 'F')||(temp[i] >= 'a' && temp[i] <= 'f')) | |
| retAmt=retAmt+((int)temp[i]-55)*m; | |
| m=m*16; | |
| i--; | |
| } | |
| return retAmt; | |
| } |
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