报错为not find类，但不理解怎么解决
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@kidswong999 这个是task2
import sensor, image, time, pyb, struct, math def compareBlob(blob1, blob2): #比较两个色块大小的函数 tmp = blob1.pixels() - blob2.pixels() if tmp == 0: return 0 elif tmp > 0: return 1 else: return -1 def task_2017_1_2(): red_threshold_01 = (0,55) #目标色块的灰度值参数范围 Buzzer = pyb.Pin("P6", pyb.Pin.OUT_PP) Buzzer.value(1) time.sleep(500) Buzzer.value(0) time.sleep(500) Buzzer.value(1) time.sleep(500) Buzzer.value(0) while(True): print("the task number is 2 now!") img = sensor.snapshot().lens_corr(1.8) blobs = img.find_blobs([red_threshold_01], pixels_threshold=100, merge=True) #寻找目标色块，低于150像素的视为噪声 img.binary([red_threshold_01], invert = True) #二值化处理 if blobs: #如果识别到目标色块 #print(blobs) #在终端打印出blobs的信息 bigBlob = blobs[0] #将第一个色块赋值给最大色块 for blob_temp in blobs: #此循环找出最大色块，进一步滤除噪声 if compareBlob(bigBlob, blob_temp) == -1: bigBlob = blob_temp img.draw_rectangle(bigBlob[0:4]) #画个矩形框标出色块所在区域 img.draw_cross(bigBlob[5], bigBlob[6]) #画个十字架标出色块所在区域的中心点 print("Bigbolb.pixel: %d" %bigBlob.pixels()) if (bigBlob.pixels() < 1500) and \ (bigBlob.pixels() > 300): pyb.LED(2).on() Buzzer.value(1) else: pyb.LED(2).off() Buzzer.value(0)
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@kidswong999 这个是task3
import sensor, image, time, pyb, struct, math import pid, data_pack def compareBlob(blob1, blob2): #比较两个色块大小的函数 tmp = blob1.pixels() - blob2.pixels() if tmp == 0: return 0 elif tmp > 0: return 1 else: return -1 def task_2017_1_3(): red_threshold_03 = (0,55) #目标色块的灰度值参数范围 time_flag = 0 num_stop = 0 pid_x = pid.PID(80,0.3,0,0,30) #x轴方向的pid控制，pid参数要自己调 pid_y = pid.PID(60,0.3,0,0,30) #y轴方向的pid控制 flag_x_y = 0 prepare_flag = 0 Buzzer = pyb.Pin("P6", pyb.Pin.OUT_PP) ##################各个字母所对应的ASCII值###################### R = ord('R') L = ord('L') S = ord('S') B = ord('B') G = ord('G') E = ord('E') ########################################################### Buzzer.value(1) time.sleep(500) Buzzer.value(0) time.sleep(500) Buzzer.value(1) time.sleep(500) Buzzer.value(0) time.sleep(500) Buzzer.value(1) time.sleep(500) Buzzer.value(0) while(True): print("the task number is 3 now!") img = sensor.snapshot().lens_corr(1.8) blobs = img.find_blobs([red_threshold_03], pixels_threshold=100, merge=True) #寻找目标色块，低于150像素的视为噪声 img.binary([red_threshold_03], invert = True) #二值化处理 if len(blobs) == 2: #如果识别到目标色块 print("the number of blobs is %d" %len(blobs)) if(abs(blobs[0].cx()-80)<5) and \ (abs(blobs[0].cy()-60)<5): time_flag = 1 if flag_x_y == 0 : #调节x与y方向的切换标志 speed_x = pid_x.IncPIDCalc(blobs[0].cx()) # print("speed_x: %f" %speed_x) if speed_x > 0: #说明目标当前x值偏小，无人机偏右，需要向左调整 data_pack.send_cmd(L,speed_x) else: data_pack.send_cmd(R,abs(speed_x)) flag_x_y = 1 #标志位置1，表示下次循环调整y轴方向 else : speed_y = pid_y.IncPIDCalc(blobs[0].cy()) #print("speed_y: %f" %speed_y) if speed_y >= 0: #说明目标当前y值偏小，无人机偏后，需要向前调整 data_pack.send_cmd(G,speed_y) else: data_pack.send_cmd(B,abs(speed_y)) flag_x_y = 0 #标志位置0，表示下次循环调整x轴方向 elif len(blobs) == 0: print("the number of blobs is %d" %len(blobs)) if prepare_flag == 0 or prepare_flag == 2: data_pack.send_cmd(E,0) #没有检测到目标色块，这里让无人机原地罚站 else: data_pack.send_cmd(G,5) else : print("the number of blobs is %d" %len(blobs)) bigBlob = blobs[0] #将第一个色块赋值给最大色块 for blob_temp in blobs: #此循环找出最大色块，进一步滤除噪声 if compareBlob(bigBlob, blob_temp) == -1: bigBlob = blob_temp if prepare_flag == 1 and bigBlob.cy() > 80: data_pack.send_cmd(G,5) elif prepare_flag == 1 and bigBlob.cy() < 40: prepare_flag = 2 if(abs(bigBlob.cx()-80)<5) and \ (abs(bigBlob.cy()-60)<5) and \ prepare_flag == 0: prepare_flag = 1 if(abs(bigBlob.cx()-80)<5) and \ (abs(bigBlob.cy()-60)<5) and \ prepare_flag == 2: time_flag = 1 if prepare_flag == 0 or prepare_flag == 2: if flag_x_y == 0 : #调节x与y方向的切换标志 speed_x = pid_x.IncPIDCalc(bigBlob.cx()) # print("speed_x: %f" %speed_x) if speed_x > 0: #说明目标当前x值偏小，无人机偏右，需要向左调整 data_pack.send_cmd(L,speed_x) else: data_pack.send_cmd(R,abs(speed_x)) flag_x_y = 1 #标志位置1，表示下次循环调整y轴方向 else : speed_y = pid_y.IncPIDCalc(bigBlob.cy()) #print("speed_y: %f" %speed_y) if speed_y >= 0: #说明目标当前y值偏小，无人机偏后，需要向前调整 data_pack.send_cmd(G,speed_y) else: data_pack.send_cmd(B,abs(speed_y)) flag_x_y = 0 #标志位置0，表示下次循环调整x轴方向 else: #准备就绪，进入8区 data_pack.send_cmd(G,15) if time_flag == 1: num_stop += 1 if num_stop >= 120 : #100次差不多5秒钟，降落 data_pack.send_cmd(L,15) time.sleep(100) data_pack.send_cmd(L,15) time.sleep(100) data_pack.send_cmd(L,15) time.sleep(100) num_stop = 0 data_pack.send_cmd(E,0)
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@kidswong999 这个是task plus
import sensor, image, time, pyb, struct, math import pid, data_pack def compareBlob(blob1, blob2): #比较两个色块大小的函数 tmp = blob1.pixels() - blob2.pixels() if tmp == 0: return 0 elif tmp > 0: return 1 else: return -1 def task_2017_2(): threshold_01 = (0,55) #目标色块的灰度值参数范围 number_period = 0 pid_x = pid.PID(80,0.5,0,0,30) #x轴方向的pid控制，pid参数要自己调 pid_y = pid.PID(60,0.5,0,0,30) #y轴方向的pid控制 flag_x_y = 0 flag_buzzer = 0 stop_flag_car = 0 clock = time.clock() Buzzer = pyb.Pin("P6", pyb.Pin.OUT_PP) uart1 = pyb.UART(1, 115200, timeout_char = 100) #打开串口1 ##################各个字母所对应的ASCII值###################### R = ord('R') L = ord('L') S = ord('S') B = ord('B') G = ord('G') E = ord('E') ########################################################### Buzzer.value(1) time.sleep(400) Buzzer.value(0) time.sleep(400) Buzzer.value(1) time.sleep(400) Buzzer.value(0) time.sleep(400) Buzzer.value(1) time.sleep(400) Buzzer.value(0) time.sleep(400) Buzzer.value(1) time.sleep(400) Buzzer.value(0) while(True): #print("the task number is 1 now!") clock.tick() number_period += 1 if number_period >= 60 : number_period = 0 if stop_flag_car != S: stop_flag_car = uart1.readchar() if stop_flag_car == S: if flag_buzzer == 0: data_pack.send_cmd(E,0) Buzzer.value(1) time.sleep(1000) Buzzer.value(0) flag_buzzer = 1 #time.sleep(1000) # print("landing start!") #print("stop_flag_car : %s" %stop_flag_car) # data_pack.send_cmd(S,0) #print("stop_flag_car : %s" %stop_flag_car) #continue img = sensor.snapshot().lens_corr(1.8) blobs = img.find_blobs([threshold_01], pixels_threshold=100, merge=True) #寻找目标色块，低于150像素的视为噪声 img.binary([threshold_01], invert = True) #二值化处理 if blobs: #如果识别到目标色块 #print(blobs) #在终端打印出blobs的信息 bigBlob = blobs[0] #将第一个色块赋值给最大色块 for blob_temp in blobs: #此循环找出最大色块，进一步滤除噪声 if compareBlob(bigBlob, blob_temp) == -1: bigBlob = blob_temp img.draw_rectangle(bigBlob[0:4]) #画个矩形框标出色块所在区域 img.draw_cross(bigBlob[5], bigBlob[6]) #画个十字架标出色块所在区域的中心点 if flag_x_y == 0 : #调节x与y方向的切换标志 speed_x = pid_x.IncPIDCalc(bigBlob.cx()) # print("speed_x: %f" %speed_x) if speed_x > 0: #说明目标当前x值偏小，无人机偏右，需要向左调整 data_pack.send_cmd(L,speed_x) else: data_pack.send_cmd(R,abs(speed_x)) flag_x_y = 1 #标志位置1，表示下次循环调整y轴方向 else : speed_y = pid_y.IncPIDCalc(bigBlob.cy()) #print("speed_y: %f" %speed_y) if speed_y >= 0: #说明目标当前y值偏小，无人机偏后，需要向前调整 data_pack.send_cmd(G,speed_y) else: data_pack.send_cmd(B,abs(speed_y)) flag_x_y = 0 #标志位置0，表示下次循环调整x轴方向 else: data_pack.send_cmd(S,0) #没有检测到目标色块，这里让无人机原地罚站
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@kidswong999 这个是pid
import sensor, image, time, math, struct ,pyb,utime class PID: def __init__(self, SetPoint,Proportion,Integral,Derivative,Limit): # WARNING: Don't use PA4-X5 or PA5-X6 as echo pin without a 1k resistor self.SetPoint = SetPoint #设定值 self.Proportion = Proportion #P self.Integral = Integral #I self.Derivative = Derivative #D self.Limit = Limit #限幅 self.LastError = 0 #前1次误差值 self.PrevError = 0 #前2次误差值 self.iError = 0 #当前误差 self.iIncpid = 0 #增量误差 self.Uk = 0 #输出返回\ def IncPIDCalc(self, NextPoint): # 当前误差 self.iError = self.SetPoint - NextPoint # 增量误差 self.iIncpid = (self.Proportion * (self.iError - self.LastError)+ self.Integral * self.iError + self.Derivative * (self.iError - 2 * self.LastError + self.PrevError)) #存储误差，用于下次计算 self.PrevError = self.LastError self.LastError = self.iError self.Uk += self.iIncpid self.Uk = self.Limit_Amplitude(self.Uk) # print("NextPoint : %f" % NextPoint) # print("Uk : %f" % self.Uk) return self.Uk def Limit_Amplitude(self,num): if num > self.Limit : return self.Limit elif num < -self.Limit: return -self.Limit else: return num
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@kidswong999 这个是data_pack
import sensor, image, time def get_line_k(x1,x2,y1,y2): det_x = x2 - x1 det_y = y2 - y1 if det_x == 0: #考虑斜率无穷大的情况 det_x = 1 return (det_y/det_x) def get_line_b(x1,x2,y1,y2): k = get_line_k(x1,x2,y1,y2) return (y1-(k*x1)) def get_line_cross_x(k1,k2,b1,b2): det_k = k1 - k2 if det_k == 0: return -1 else: return (b2 - b1)/(k1 - k2) def get_line_cross_y(k1,k2,b1,b2): det_k = k1 - k2 if det_k == 0: return -1 else: return (b1*k2 - k1*b2)/(k2 - k1) def get_cross_dot(lines): cross_dot = [0,0] x1 = lines[0].x1() x2 = lines[0].x2() x3 = lines[1].x1() x4 = lines[1].x2() y1 = lines[0].y1() y2 = lines[0].y2() y3 = lines[1].y1() y4 = lines[1].y2() k1 = get_line_k(x1,x2,y1,y2) k2 = get_line_k(x3,x4,y3,y4) b1 = get_line_b(x1,x2,y1,y2) b2 = get_line_b(x3,x4,y3,y4) cross_dot[0] = get_line_cross_x(k1,k2,b1,b2) cross_dot[1] = get_line_cross_y(k1,k2,b1,b2) return cross_dot
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@ugli 写错了，这个是line_calcu.py
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@kidswong999 这个才是data_pack
import time, pyb, struct C = ord('C') F = ord('F') G = ord('G') B = ord('B') R = ord('R') L = ord('L') D = ord('D') U = ord('U') E = ord('E') S = ord('S') H = ord('H') uart3 = pyb.UART(3, 500000, timeout_char = 1000) green_led = pyb.LED(2) def send_89(direct,velcity): ''' 功能字为0x89，控制前进(后退)、左(右)、上升(下降)速度大小 speed字段必须正 ''' s = 0xAA+0x8C+direct+(int(velcity/256))+(int(velcity%256)) s = int(s % 256) temp_flow = struct.pack("<BBBBBhB", 0x00, 0xAA, 0x89, 03, direct, int(velcity), s) uart3.write(temp_flow) def send_98(direct,velcity): ''' 功能字为0x98，控制顺(逆)时针转动速度大小 speed字段正负一样 ''' s = 0xAA+0x9B+direct+(int(velcity/256))+(int(velcity%256)) s = int(s % 256) temp_flow = struct.pack("<BBBBBhB", 0x00, 0xAA, 0x98, 03, direct, velcity, s) uart3.write(temp_flow) def send_cmd(direct,velcity): if direct == C or direct == F: send_98(direct,velcity) time.sleep(3) else: send_89(direct,velcity) if direct == S: time.sleep(3)
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@kidswong999 这个是car_calcu.py
import pyb,struct uart = pyb.UART(3,115200, timeout_char = 1000) def car_run(x1,x2): if x1 > 0 : right_value = x1 else : right_value = x1 if x2 > 0 : left_value = x2 else : left_value = x2 send_rpm(right_value,left_value) def send_rpm(right_value,left_value): left_rpm = int(left_value * 27) right_rpm = int(right_value * 27) left_rpm_low = left_rpm & 0x00ff left_rpm_high = left_rpm >> 8 right_rpm_low = right_rpm & 0x00ff right_rpm_high = right_rpm >> 8 xor = 0x6^0x3^0x4^(left_rpm_low)^(left_rpm_high)^(right_rpm_low)^(right_rpm_high) xor = (int(xor%256)) temp_flow = struct.pack("<BBBBBhhB", 0xaa, 0x55, 0x6, 0x3, 0x4, left_rpm, right_rpm, xor) ret = uart.write(temp_flow) print(left_rpm/27, right_rpm/27)
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@kidswong999 实在抱歉，大佬，是我不熟悉这个论坛的问题，没有注意到插入代码，直接复制到了发言内容里，缩进被直接去掉了。
剩下最后一个包里的key_point.py了，很简短的一句：import sensor, image, time再次抱歉，浪费了大佬宝贵的时间，但还是恬不知耻的想要请大佬赐教。万胜感激！
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main.py是哪个啊？
OpenMV硬件的具体型号是什么？
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@kidswong999 这个是main.py，具体型号为openMV4H7plus
import sensor, image, time, pyb, struct, math import pid, data_pack, t2017_task1, t2017_task2, t2017_task3, t2017_task_plus ######################初始化程序############################## sensor.reset() #对openmv进行复位 sensor.set_pixformat(sensor.GRAYSCALE) #以RGG565的格式读取像素信息 sensor.set_framesize(sensor.QQVGA) #分辨率为QQVGA:160*120 sensor.skip_frames(10) #前10帧数据舍去，避免刚刚启动，数据不稳定造成误判 sensor.set_auto_whitebal(False) #关闭自动白平衡 clock = time.clock() uart = pyb.UART(3, 500000, timeout_char = 1000) #打开串口3 red_threshold_01 = (0,55) #目标色块的灰度值参数范围 flag_x_y = 0 #这是一个标志位，循环调整无人机的x方向和y方向 num_stop = 0 #罚站次数，罚站即不对无人机进行位置调整 time_flag = 0 pid_x = pid.PID(80,0.5,0,0,30) #x轴方向的pid控制，pid参数要自己调 pid_y = pid.PID(60,0.5,0,0,30) #y轴方向的pid控制 task_number = 0 #任务切换 MV_ctrl_flag = 0 Buzzer = pyb.Pin("P6", pyb.Pin.OUT_PP) ##################各个字母所对应的ASCII值###################### R = ord('R') L = ord('L') S = ord('S') B = ord('B') G = ord('G') E = ord('E') H = ord('H') task1 = ord('a') task2 = ord('b') task3 = ord('c') task4 = ord('d') task5 = ord('e') ########################################################### def send_direction_packet(direct,velcity): #与无人机mcu的通信协议，数据打包并发送 s = 0xAA+0x8C+direct+(int(velcity/256))+(int(velcity%256)) #s是校验字节，是数据包里s之前所有数据的和 s = int(s % 256) #因为协议里s是8位的，这里取低八位 temp_flow = struct.pack("<BBBBhB", #数据包的封装格式，B:unsigned char; h:short 0xAA, 0x89, 03, direct, int(velcity), s) uart.write(temp_flow) while(True): times = clock.avg() clock.reset() #用来测量一个循环所用的时间，单位ms，不用的话这里也可以删掉 clock.tick() print("time: %d" %times) #task_number = 4 ###### while(task_number == 0): #获取任务ID task_char = uart.readchar() Buzzer.value(0) if task_char == task1: task_number = 1 elif task_char == task2: task_number = 2 elif task_char == task3: task_number = 3 elif task_char == task4: task_number = 4 elif task_char == task5: task_number = 5 else : task_number =0 print("task_number : %d" %task_number) if task_number != 2: #2 while(MV_ctrl_flag == 0): #判断openMV是否获得控制权 MV_ctrl_char = uart.readchar() if MV_ctrl_char == H: MV_ctrl_flag = 1 print("start work") if task_number == 1: t2017_task1.task_2017_1_1() elif task_number == 2: t2017_task2.task_2017_1_2() elif task_number == 3: t2017_task3.task_2017_1_3() elif (task_number == 4) or (task_number == 5): print("task number : %d" %task_number) t2017_task_plus.task_2017_2() ############################################################################################## ############################################################# ## # ## 此文件实现对黑色动态物体的跟踪 # ## # ############################################################# #import sensor, image, time, pyb, struct, math #import pid, data_pack #from machine import Pin #######################初始化程序############################# #sensor.reset() #对openmv进行复位 #sensor.set_pixformat(sensor.GRAYSCALE) #以RGG565的格式读取像素信息 #sensor.set_framesize(sensor.QQVGA) #分辨率为QQVGA:160*120 #sensor.skip_frames(10) #前10帧数据舍去，避免刚刚启动，数据不稳定造成误判 #sensor.set_auto_whitebal(False) #关闭自动白平衡 #clock = time.clock() #uart = pyb.UART(3, 500000, timeout_char = 1000) #打开串口3 #red_threshold_01 = (0,55) #目标色块的灰度值参数范围 #flag_x_y = 0 #这是一个标志位，循环调整无人机的x方向和y方向 #num_stop = 0 #罚站次数，罚站即不对无人机进行位置调整 #start_MV_flag = 0 #time_flag = 0 #prepare_flag = 0 #pid_x = pid.PID(80,0.3,0,0,30) #x轴方向的pid控制，pid参数要自己调 #pid_y = pid.PID(60,0.3,0,0,30) #y轴方向的pid控制 #Buzzer = pyb.Pin("P6", pyb.Pin.OUT_PP) #none_blob_flag = 0 ###################各个字母所对应的ASCII值###################### #R = ord('R') #L = ord('L') #S = ord('S') #B = ord('B') #G = ord('G') #E = ord('E') #H = ord('H') #task1 = ord('a') #task2 = ord('b') #task3 = ord('c') #task4 = ord('d') #task5 = ord('e') ############################################################ #def send_direction_packet(direct,velcity): #与无人机mcu的通信协议，数据打包并发送 #s = 0xAA+0x8C+direct+(int(velcity/256))+(int(velcity%256)) #s是校验字节，是数据包里s之前所有数据的和 #s = int(s % 256) #因为协议里s是8位的，这里取低八位 #temp_flow = struct.pack("<BBBBhB", #数据包的封装格式，B:unsigned char; h:short #0xAA, #0x89, #03, #direct, #int(velcity), #s) #uart.write(temp_flow) #def compareBlob(blob1, blob2): #比较两个色块大小的函数 #tmp = blob1.pixels() - blob2.pixels() #if tmp == 0: #return 0 #elif tmp > 0: #return 1 #else: #return -1 #while(True): #times = clock.avg() #clock.reset() #用来测量一个循环所用的时间，单位ms，不用的话这里也可以删掉 #clock.tick() #print("time: %d" %times) #img = sensor.snapshot().lens_corr(1.8) #blobs = img.find_blobs([red_threshold_01], #pixels_threshold=100, merge=True) #寻找目标色块，低于150像素的视为噪声 #img.binary([red_threshold_01], invert = True) #二值化处理 ## Buzzer.value(1) #while(start_MV_flag == 0): #value_from_flyctr = uart.readchar() #print("value_from_flyctr : %d" %value_from_flyctr) #if value_from_flyctr == H : #start_MV_flag = 1 #悬停计时开始标志位 #if len(blobs) == 2: #如果识别到目标色块 #print("the number of blobs is %d" %len(blobs)) #if(abs(blobs[0].cx()-80)<5) and \ #(abs(blobs[0].cy()-60)<5): #time_flag = 1 #if flag_x_y == 0 : #调节x与y方向的切换标志 #speed_x = pid_x.IncPIDCalc(blobs[0].cx()) ## print("speed_x: %f" %speed_x) #if speed_x > 0: #说明目标当前x值偏小，无人机偏右，需要向左调整 #send_direction_packet(L,speed_x) #else: #send_direction_packet(R,abs(speed_x)) #flag_x_y = 1 #标志位置1，表示下次循环调整y轴方向 #else : #speed_y = pid_y.IncPIDCalc(blobs[0].cy()) ##print("speed_y: %f" %speed_y) #if speed_y >= 0: #说明目标当前y值偏小，无人机偏后，需要向前调整 #send_direction_packet(G,speed_y) #else: #send_direction_packet(B,abs(speed_y)) #flag_x_y = 0 #标志位置0，表示下次循环调整x轴方向 #elif len(blobs) == 0: #print("the number of blobs is %d" %len(blobs)) #if prepare_flag == 0: #send_direction_packet(E,0) #没有检测到目标色块，这里让无人机原地罚站 #else: #send_direction_packet(G,5) #prepare_flag = 2 #else : #print("the number of blobs is %d" %len(blobs)) #bigBlob = blobs[0] #将第一个色块赋值给最大色块 #for blob_temp in blobs: #此循环找出最大色块，进一步滤除噪声 #if compareBlob(bigBlob, blob_temp) == -1: #bigBlob = blob_temp #if(abs(blobs[0].cx()-80)<5) and \ #(abs(blobs[0].cy()-60)<5) and \ #prepare_flag == 0: #prepare_flag = 1 #if(abs(blobs[0].cx()-80)<5) and \ #(abs(blobs[0].cy()-60)<5) and \ #prepare_flag == 2: #time_flag = 1 #if prepare_flag == 0 or prepare_flag == 2: #if flag_x_y == 0 : #调节x与y方向的切换标志 #speed_x = pid_x.IncPIDCalc(bigBlob.cx()) ## print("speed_x: %f" %speed_x) #if speed_x > 0: #说明目标当前x值偏小，无人机偏右，需要向左调整 #send_direction_packet(L,speed_x) #else: #send_direction_packet(R,abs(speed_x)) #flag_x_y = 1 #标志位置1，表示下次循环调整y轴方向 #else : #speed_y = pid_y.IncPIDCalc(bigBlob.cy()) ##print("speed_y: %f" %speed_y) #if speed_y >= 0: #说明目标当前y值偏小，无人机偏后，需要向前调整 #send_direction_packet(G,speed_y) #else: #send_direction_packet(B,abs(speed_y)) #flag_x_y = 0 #标志位置0，表示下次循环调整x轴方向 #else: #准备就绪，进入8区 #send_direction_packet(G,5) #if time_flag == 1: #num_stop += 1 #if num_stop >= 120 : #100次差不多5秒钟，降落 #send_direction_packet(L,15) #time.sleep(2000) #num_stop = 0 #send_direction_packet(E,0)