hex string to ascii ?

Development Boards MicroMod
5

Here’s the code I’m using so far, it doesn’t work tho as it doesnt seem to want to flash to my lpc2378 chip.

uart0Write("414243");

void uart0Write(char *data)
{
  char ch;
  char* temp;

  temp = hex2asc(data);
  while ((ch = *temp) && (uart0WriteByte(ch) >= 0))
    data++;
}

static char *cpHex = "0123456789ABCDEF";
static int _Char2Index(char cHexChar) {
  char* cpPtr;
  cpPtr = strchr(cpHex, toupper(cHexChar));
  if (NULL == cpPtr) return(0);
  return((int)(cpPtr - cpHex));
}

char* hex2asc(char* cpSrc) {
  char* cpBuffer;
  char* cpDst;

  cpBuffer = malloc( strlen(cpSrc)/2 + 1 );
  cpDst = cpBuffer;
  while ('\0' != *cpSrc) {
    *cpDst = _Char2Index(*cpSrc)*16 + _Char2Index(*(cpSrc+1));
	cpDst++;
    cpSrc +=2;
  }
  *cpDst = '\0';

  return (cpBuffer);
}