C-language Data Conversion (hex-char-byte Array-acsii)

The online collation, the source is not clear, thank the Author.

Dataconvert.c

#include <stdio.h>#include<string.h>#include"DataConvert.h"intStrtohex (Char*ch,Char*Hex) {  inthigh,low; intTMP =0; if(ch = = NULL | | hex = =NULL) {    return-1; }  if(strlen (ch) = =0){    return-2; }   while(*Ch) {tmp= (int)*ch; high= tmp >>4; low= tmp & the; *hex++ = Valuetohexch (high);//write high byte first*hex++ = Valuetohexch (low);//Next Write Low bytech++; }  *hex =' /'; return 0;}intHEXTOSTR (Char*hex,Char*Ch) {  inthigh,low; intTMP =0; if(hex = = NULL | | ch = =NULL) {    return-1; }  if(strlen (hex)%2==1){    return-2; }   while(*Hex) { high= Hexchartovalue (*hex); if(high <0){      *ch =' /'; return-3; } Hex++;//the pointer moves to the next characterLow = Hexchartovalue (*hex); if(low <0){      *ch =' /'; return-3; } tmp= (high <<4) +low ; *ch++ = (Char) tmp; Hex++; }  *ch =' /'; return 0;}intHexchartovalue (Const CharCh) {  intresult =0; //get 16-binary high-byte bits of data  if(ch >='0'&& CH <='9') {result= (int) (ch-'0'); }  Else if(ch >='a'&& CH <='Z') {result= (int) (ch-'a') +Ten; }  Else if(ch >='A'&& CH <='Z') {result= (int) (ch-'A') +Ten; }  Else{result= -1; }  returnresult;}CharValuetohexch (Const intValue) {  Charresult =' /'; if(value >=0&& value <=9) {result= (Char) (value + -);//48 ASCII encoded ' 0 ' character encoded value  }  Else if(value >=Ten&& value <= the) {result= (Char) (value-Ten+ $);//subtract 10 to find its offset in 16, and 65 is the ASCII character encoding value of ' A '  }  Else{    ; }  returnresult;}intHexchartobyte (Char*s,Char*byte){    intI,n =0;  for(i =0; s[i]; i + =2)    {        if(s[i] >='A'&& s[i] <='F')            byte[n] = s[i]-'A'+Ten; Else byte[n] = s[i]-'0'; if(s[i +1] >='A'&& S[i +1] <='F')            byte[n] = (byte[n] <<4) | (s[i +1] -'A'+Ten); Else byte[n] = (byte[n] <<4) | (s[i +1] -'0'); ++n; }        returnn;} unsignedCharChartoascii (ConstUnsignedCharCha) {unsignedCharascii; if(cha >=0x0A) && (cha <=0x0F) ) {ascii= Cha +'A'-Ten; }    Else{ascii= Cha +'0'; }    returnascii;}

DataConvert.h

#ifndef __data_h#define__data_hintStrtohex (Char*ch,Char*hex);intHEXTOSTR (Char*hex,Char*ch);intHexchartovalue (Const Charch);CharValuetohexch (Const intvalue);intHexchartobyte (Char*s,Char*byte); unsignedCharChartoascii (ConstUnsignedCharcha);#endif

Main.c

#include <stdio.h>#include<string.h>#include"DataConvert.h"#defineMcu_firware_version "V1.0.0"#defineBle_firware_version "V1.0.0"#defineFont_version "V1.0.0"intMainintargcChar*Argv[]) {    inti; Charresult[1024x768]; Char*p_result =result; //converting version Number data    Charmcu_version_hex[ a]; Charmcu_version_byte[6]; Char*p_ch =mcu_firware_version; Char*p_hex =mcu_version_hex;    Strtohex (p_ch,p_hex); intn =Hexchartobyte (mcu_version_hex,mcu_version_byte); Charble_version_hex[ a]; Charble_version_byte[6]; P_ch=ble_firware_version; P_hex=ble_version_hex;    Strtohex (p_ch,p_hex); intm =Hexchartobyte (ble_version_hex,ble_version_byte); Charfont_version_hex[ a]; Charfont_version_byte[6]; P_ch=font_version; P_hex=font_version_hex;    Strtohex (p_ch,p_hex); intK =Hexchartobyte (font_version_hex,font_version_byte); //populating the version Number data     for(inti =0; i<n;i++) printf ("%x",0XFF&mcu_version_byte[i]);  for(inti =0; i<m;i++) printf ("%x",0XFF&ble_version_byte[i]);  for(inti =0; i<k;i++) printf ("%x",0XFF&font_version_byte[i]);        Hextostr (p_hex, p_result); printf ("the string is:%s\n", p_result);}

The demo above converts a string into a UTF8 byte stream, which can be converted to string validation using the UTF8 conversion tool.

------end

C-language Data Conversion (hex-char-byte Array-acsii)