bit b_5ms=0,b_1s=0;
bit state=1;
bit b_rx_timeover=0;
bit b_rx_end=0,b_tx_sign=0;
unsigned char tcnt=10;
unsigned char rx_timeover=0;
unsigned char rx_length=0;
unsigned char rx_head=0;
unsigned char rx_buffer_index=0;
unsigned char write_timeover=0;
unsigned char tx_code;
unsigned char n_lamp;
unsigned char rt_buffer[180];
unsigned char step;