comm.h

采用811芯片实现单片机读写U盘的源代码

#ifdef COMM_FILE
#define COMM_EXT
#else
#define COMM_EXT extern
#endif

#ifdef COMM_FILE
uchar data time;
uint data r_in=0,r_out=0,t_in=0,t_out=0; /*队列指针*/
bit r_full=0,t_empty=0,t_done=0;
/*0＝接收缓冲区空，1＝满；
0＝发送缓冲区空，1＝正在发送
1＝正在发送最后字节；
*/
#else
extern uchar data time;
extern uint data r_in,r_out,t_in,t_out; /*队列指针*/
extern bit r_full,t_empty,t_done;
#endif

COMM_EXT uchar t_buf[1024];      /* 串行发送缓冲 */
COMM_EXT uchar r_buf[1024];      /* 串行接收缓冲 */

COMM_EXT void send_str(uint length,uchar *buffer);
//extern void send_char(uchar ch);
COMM_EXT uchar wait_send_end(void);
COMM_EXT uchar rece(uint length,uchar *buffer);
COMM_EXT void clear_rece_buffer(void);
COMM_EXT uchar rece_s(uchar *buffer);
COMM_EXT uchar rece_cmd(uchar *cmd,uchar *package,uint *len,uchar *para);
COMM_EXT uchar send_data(uchar package,uint len,uchar *para);
COMM_EXT void send_error(uchar error);