Create rs232_CCS.c

Created my own functions:
void putChar(uint8_t a);       //Transmits a character
uint8_t  getChar(void);        //Waits and gets a character from SCI
void putInt16(int16_t X);      //msb - lsb of 12 bit data
void putInt8(int16_t Y);        //8 msb of 12 bit data
void printf(uint8_t *msg);     //Prints a character string till '\0