python 文件操作学习 Tkinter GUI
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# -*- coding: utf-8 -*-#使用cp936 写入文件名会有问题，原因是编码方式的差异"""创建GUI解码servo CAN数据"""import osimport re#正则表达式库import sysimport timeimport chardetimport datetimeimport tkFileDialogimport tkMessageBoxfrom Tkinter import *filename = ""def get_file(): global filename #创建文件对话框,只打开txt类型文件 filename = tkFileDialog.askopenfilename(filetypes=[("text file", "*.txt")]) var.set(filename)def convert_result(): tkMessageBox.showinfo("转换结果",u"CAN数据解密成功")#获取高位def get_H(tmp): return (tmp&0xF0)>>4#获取低位def get_L(tmp): return tmp&0x0F#拼接成一个字节 8bitsdef get_all_byte(H,L):#注意优先级+高于<<高于& return ((L&0x0F)+((H&0x0F)<<4))#拼接一个半字 16bitsdef get_half_word(byteH,byteL): return (((byteH&0xFF)<<8)+(byteL&0xFF))#拼接一个字 32bits H->Ldef get_one_word(byte3,byte2,byte1,byte0): ha_wd1 = ((byte3&0xFF)<<8)+(byte2&0xFF) ha_wd0 = ((byte1&0xFF)<<8)+(byte0&0xFF) return (ha_wd1<<16)+ha_wd0#数据解密def data_unlock(buff):##-------------拆分数据-----------## FrontCon_data0_L = get_L(buff[0]) FrontCon_data0_H = get_H(buff[0]) FrontCon_data1_L = get_L(buff[1]) FrontCon_data1_H = get_H(buff[1]) FrontCon_data2_L = get_L(buff[2]) FrontCon_data2_H = get_H(buff[2]) FrontCon_data3_L = get_L(buff[3]) FrontCon_data3_H = get_H(buff[3]) FrontCon_data4_L = get_L(buff[4]) FrontCon_data4_H = get_H(buff[4]) FrontCon_data5_L = get_L(buff[5]) FrontCon_data5_H = get_H(buff[5]) FrontCon_data6_L = get_L(buff[6]) FrontCon_data6_H = get_H(buff[6]) FrontCon_data7_L = get_L(buff[7]) FrontCon_data7_H = get_H(buff[7])##-------------解码数据-----------## Center_data0_L = FrontCon_data0_L Center_data0_H = FrontCon_data0_H Center_data1_L = FrontCon_data1_L Center_data1_H = FrontCon_data1_H Center_data2_L = FrontCon_data2_L^Center_data0_L Center_data2_H = FrontCon_data2_H^Center_data0_L Center_data3_L = FrontCon_data3_L^Center_data0_L Center_data3_H = FrontCon_data3_H^Center_data0_L Center_data4_L = FrontCon_data4_L^Center_data0_L Center_data4_H = FrontCon_data4_H^Center_data0_L Center_data5_L = FrontCon_data5_L^Center_data0_L Center_data5_H = FrontCon_data5_H^Center_data0_L Center_data6_L = FrontCon_data6_L^Center_data0_L Center_data6_H = FrontCon_data6_H^Center_data0_L Center_data7_L = FrontCon_data7_L^Center_data0_L Center_data7_H = FrontCon_data7_H^Center_data0_L OverCon_data7_L = Center_data0_L OverCon_data0_L = Center_data0_H OverCon_data7_H = Center_data1_L OverCon_data1_L = Center_data1_H OverCon_data4_L = Center_data2_L OverCon_data2_L = Center_data2_H OverCon_data4_H = Center_data3_L OverCon_data3_L = Center_data3_H OverCon_data0_H = Center_data4_L OverCon_data1_H = Center_data4_H OverCon_data2_H = Center_data5_L OverCon_data3_H = Center_data5_H OverCon_data5_L = Center_data6_L OverCon_data6_L = Center_data6_H OverCon_data5_H = Center_data7_L OverCon_data6_H = Center_data7_H buff[0] = get_all_byte(OverCon_data0_H,OverCon_data0_L) buff[1] = get_all_byte(OverCon_data1_H,OverCon_data1_L) buff[2] = get_all_byte(OverCon_data2_H,OverCon_data2_L) buff[3] = get_all_byte(OverCon_data3_H,OverCon_data3_L) buff[4] = get_all_byte(OverCon_data4_H,OverCon_data4_L) buff[5] = get_all_byte(OverCon_data5_H,OverCon_data5_L) buff[6] = get_all_byte(OverCon_data6_H,OverCon_data6_L) buff[7] = get_all_byte(OverCon_data7_H,OverCon_data7_L) #校验 FrontCon_data0_L = (OverCon_data0_L+OverCon_data0_H+OverCon_data1_L+OverCon_data1_H+ OverCon_data2_L+OverCon_data2_H+OverCon_data3_L+OverCon_data3_H+OverCon_data4_L+ OverCon_data4_H+OverCon_data5_L+OverCon_data5_H+OverCon_data6_L+OverCon_data6_H) #print 'Front_0L',hex(FrontCon_data0_L),'Over_7H',hex(OverCon_data7_H) #注意C语言为公用体，累计会导致溢出，故只取低4bit if FrontCon_data0_L&0x0F == OverCon_data7_H&0x0F: return 1 else: return 0def unlock_can_data(): global filename #filename = r'C:\Users\smart\Desktop\cal_money\raw_can_data.txt' #filename = 'C:/Users/smart/Desktop/摇床0等待CAN数据/0820_hunlunfh.txt' dir_idx = filename.rfind('/')#双斜杠表示查找'\',防止转义 dir = filename[:dir_idx+1] print 'file name:',filename,'dir:',dir new_file = dir+'unlock_can_data.txt' new_f = open(new_file,'w') cur_time ='当前时间:'+time.strftime("%Y-%m-%d %H:%M:%S",time.localtime())+'\n' new_f.write('源文件'+filename+'\n') new_f.write(cur_time) f = open(filename ,'r') for line in f: new_line = line #print line.strip() tmp = line.strip() cmd_id = 0 can_data = [] #从后向前查找0x08 if tmp.rfind('0x08') != -1: #print 'data',tmp[tmp.rfind('0x08')+11:],'index:',tmp[tmp.rfind('0x08')+11] start_idx = tmp.rfind('0x08')+11 end_idx = len(tmp) for i in range(8): can_data.append(eval('0x'+tmp[start_idx:start_idx+3])) start_idx += 3 #print 'd0 to d7',can_data #查找命令ID if tmp.find('0x') != -1: start_idx = tmp.find('0x') #判断是否是伺服设备ID('44') if tmp[start_idx+8:start_idx+10] == '44': cmd_id = eval(tmp[start_idx:start_idx+10])>>11 #print 'cmd id:',hex(cmd_id) #处理各种ID的数据 if cmd_id == 0x03: if data_unlock(can_data) == 1:#数据正确，解密成功 qei = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0]) spd = can_data[4] ctl = can_data[5] if qei > 0x7FFFFFFF: qei = 0xFFFFFFFF + 1 - qei new_line = new_line.strip()+'('+'qei:'+'-'+str(qei)+' spd:'+str(spd)+' ctl:'+str(ctl)+')'+'\n' else: new_line = new_line.strip()+'('+'qei:'+str(qei)+' spd:'+str(spd)+' ctl:'+str(ctl)+')'+'\n' else: print 'unlock failed.' elif cmd_id == 0x04: if data_unlock(can_data) == 1:#数据正确，解密成功 set_qei = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0]) if set_qei > 0x7FFFFFFF: set_qei = 0xFFFFFFFF + 1 - set_qei new_line = new_line.strip()+'('+'set_qei:'+'-'+str(set_qei)+')'+'\n' else: new_line = new_line.strip()+'('+'set_qei:'+str(set_qei)+')'+'\n' else: print 'unlock failed.' elif cmd_id == 0x08: qei = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0]) spd = can_data[4] ctl = can_data[5] if qei > 0x7FFFFFFF: qei = 0xFFFFFFFF + 1 - qei new_line = new_line.strip()+'('+'qei:'+'-'+str(qei)+' spd:'+str(spd)+' ctl:'+str(ctl)+')'+'\n' else: new_line = new_line.strip()+'('+'qei:'+str(qei)+' spd:'+str(spd)+' ctl:'+str(ctl)+')'+'\n' elif cmd_id == 0x09: set_qei = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0]) if set_qei > 0x7FFFFFFF: set_qei = 0xFFFFFFFF + 1 - set_qei new_line = new_line.strip()+'('+'set_qei:'+'-'+str(set_qei)+')'+'\n' else: new_line = new_line.strip()+'('+'set_qei:'+str(set_qei)+')'+'\n' elif cmd_id == 0x100: spd = get_half_word(can_data[1],can_data[0])#H->L spd1 = get_half_word(can_data[3],can_data[2]) pls = get_half_word(can_data[5],can_data[4]) pls1 = get_half_word(can_data[7],can_data[6]) if (pls > 0x7FFF)and(pls1 > 0x7FFF): pls = 0xFFFF + 1 - pls pls1 = 0xFFFF + 1 - pls1 new_line = new_line.strip()+'('+'spd:'+str(spd)+' spd1:'+str(spd1)+' pls:'+'-'+str(pls)+' pls1:'+'-'+str(pls1)+')'+'\n' elif pls > 0x7FFF: pls = 0xFFFF + 1 - pls new_line = new_line.strip()+'('+'spd:'+str(spd)+' spd1:'+str(spd1)+' pls:'+'-'+str(pls)+' pls1:'+str(pls1)+')'+'\n' elif pls1 > 0x7FFF: pls1 = 0xFFFF + 1 - pls1 new_line = new_line.strip()+'('+'spd:'+str(spd)+' spd1:'+str(spd1)+' pls:'+str(pls)+' pls1:'+'-'+str(pls1)+')'+'\n' else: new_line = new_line.strip()+'('+'spd:'+str(spd)+' spd1:'+str(spd1)+' pls:'+str(pls)+' pls1:'+str(pls1)+')'+'\n' elif cmd_id == 0x101: nexspd = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0]) nexpls = get_one_word(can_data[7],can_data[6],can_data[5],can_data[4]) new_line = new_line.strip()+'('+'nexspd:'+str(nexspd)+' nexpls:'+str(nexpls)+')'+'\n' elif cmd_id == 0x102: startpos = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0]) endpos = get_one_word(can_data[7],can_data[6],can_data[5],can_data[4]) new_line = new_line.strip()+'('+'startpos:'+str(startpos)+' endpos:'+str(endpos)+')'+'\n' elif cmd_id == 0x103: limL = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0]) limR = get_one_word(can_data[7],can_data[6],can_data[5],can_data[4]) if limL > 0x7FFFFFFF: limL = 0xFFFFFFFF + 1 - limL new_line = new_line.strip()+'('+'limL:'+'-'+str(limL)+' limR:'+str(limR)+')'+'\n' else: new_line = new_line.strip()+'('+'limL:'+str(limL)+' limR:'+str(limR)+')'+'\n' elif cmd_id == 0x110: spd = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0]) pls = get_one_word(can_data[7],can_data[6],can_data[5],can_data[4]) if pls > 0x7FFFFFFF: pls = 0xFFFFFFFF + 1 - pls new_line = new_line.strip()+'('+'spd:'+str(spd)+' pls:'+'-'+str(pls)+')'+'\n' else: new_line = new_line.strip()+'('+'spd:'+str(spd)+' pls:'+str(pls)+')'+'\n' else: new_line = new_line.strip()+'\n' else: pass new_f.write(new_line.decode('gbk')) #print 'unlock finished.\n' f.close() new_f.close() convert_result()#弹出消息，解密成功if __name__ == '__main__': reload(sys) sys.setdefaultencoding('utf-8') #创建根窗口 root = Tk() root.title("CAN数据解密") root.geometry("400x200+450+210")#width x height;起始坐标 frame = Frame(root) frame.pack() frm_L = Frame(frame) var = StringVar() Label(frm_L,text="").pack() Entry(frm_L,textvariable=var,bd=1).pack(expand=1) Label(frm_L,text="").pack() frm_L.pack() frm_R = Frame(frame) Button(frm_R,text="打开文件",command=get_file,height=2,width=8).pack(side=LEFT) Button(frm_R,text="解密",command=unlock_can_data,height=2,width=10).pack(side=RIGHT) frm_R.pack() frm_D = Frame(root) Button(frm_D,text="退出",command=frm_R.quit,height=2,width=8,bg="#B0D060").pack() frm_D.pack(side=BOTTOM) root.mainloop()界面：
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