data_pc.cpp

00001 #include "data_pc.h"
00002 #include "data_command.h"
00003 
00004 Serial pc(PA_2, PA_3);                                                          // tx, rx U2 min
00005 
00006 
00007 int pc_control = 0;                                                              // 命令帧标志位
00008 unsigned int flag_A = 0, flag_B = 0;
00009 unsigned int pc_num = 0;
00010 
00011 uint16_t mode_flag_get[1] = {0};
00012 uint16_t mode_flag_use[1] = {0};
00013 unsigned int mode_flag = 3;
00014 
00015 void pc_decode(){
00016     mode_flag = mode_flag_use[0];
00017 }
00018 
00019 void pc_clear(){
00020     mode_flag_use[0] = 0;
00021 }
00022 
00023 void serial_pc_isr(){
00024     while(pc.readable()){
00025         uint16_t c=pc.getc();
00026         if(c == 'A'){
00027             flag_A = 1;
00028             flag_B = 0;
00029             pc_num = 0;
00030             mode_flag_get[0] = 0;
00031             break; 
00032         }
00033         if(c == 'B'){
00034             flag_B = 1;
00035         }
00036         if(flag_A == 1){
00037             if((flag_B != 1) && (pc_num < 1))
00038             {
00039                 mode_flag_get[pc_num] = c;    
00040             }
00041             pc_num++;
00042             
00043             if((flag_B == 1) && (pc_num != 2))
00044             {                        
00045                 flag_A = 0;
00046                 flag_B = 0; 
00047                 pc_num   = 0;     
00048             }
00049             if((flag_B == 1) && (pc_num == 2))
00050             {                        
00051                 flag_A = 0;
00052                 flag_B = 0; 
00053                 pc_num   = 0; 
00054                 
00055                 mode_flag_use[0] = mode_flag_get[0] - '0'; 
00056                 pc_decode();
00057                 
00058                 command.printf("%d", mode_flag);                                                    // 命令帧接收成功   
00059                 
00060                 pc_clear();
00061                 
00062             }
00063             pc_control = 1;                                                      
00064         } 
00065     }
00066 }