void Transmit_String(char *Log_String) {
  int Line_Ready = 0;
  int Length = strlen(Log_String);
  int x;

  for (x = 0; x < Length; x++) {
    // Check to make sure port is ready to send
    while (Line_Ready == 0) {
      Line_Ready = inportb(COM2_LINE_STATUS) & 0x20;
    }
    Line_Ready = 0;
    // Send next byte
    outportb(COM2_BUFFERS, Log_String[x]);
  }
}

// Example Call
Transmit_String("Hello World!");

char Manual_Command = '~';

//I initially tried
Transmit_String(&Manual_Command);

//Then...
  char *Temp = (char *) malloc(sizeof(char) * 5);

    sscanf(Temp, "%c", &Manual_Command);
    Transmit_String(Temp);