UART構造体
typedef struct st_uartReg {
unsigned char CTL0;
unsigned char CTL1;
unsigned char CTL2;
union {
unsigned char BYTE;
struct {
unsigned char SRF:1;
unsigned char SRT:1;
unsigned char STT:1;
unsigned char SLS2:1;
unsigned char SLS1:1;
unsigned char SLS0:1;
unsigned char TDL:1;
unsigned char RDL:1;
} BIT;
} OPT0;
unsigned char STR;
unsigned char RX;
unsigned char TX;
unsigned char dummy[9];
}UUART, *PUART;