openmv串口检测到数据

[3icr]

import sensor, image, time

from pyb import UART
import json


uart = UART(3, 19200)

uart.init(4800, bits=8, parity=None, stop=1, timeout_char=1000)


target_threshold   = (58, 76, -13, 8, -84, 70)

ball_threshold =(58, 76, -13, 8, -84, 70)#待修改

sensor.reset()

sensor.set_pixformat(sensor.RGB565)

sensor.set_framesize(sensor.QQVGA)

sensor.skip_frames(10)

sensor.set_auto_whitebal(False)

clock = time.clock()


def find_c(threshold,roi):

     number=0
     max_size=0

     blobs = img.find_blobs(threshold,roi=roi,x_stride=10, y_stride=50)

     for b in blobs:

         if b[2]*b[3] > max_size:

             max_size = b[2]*b[3]

             if max_size>2000:

                 max_size=max_size

                 img.draw_rectangle(b[0:4], color = (0, 0, 0))

                 img.draw_cross(b[5], b[6], color = (0, 0, 0))
                 number=b[5]

     return number

def delay(a):  #对画面进行延迟，不影响ide中的画面流畅度
    b=0
    for i in range(20):
        sensor.snapshot()
        if i == 18:
            b=a
    return b


def delay1(a):#对画面进行延迟，不影响ide中的画面流畅度，并对串口发送数据进行延迟
    for i in range(20):
        sensor.snapshot()
        if i == 18:
            output_str=json.dumps(a)
            uart.write(output_str+'\r\n')






def average_zhi(num,n):
    sum=0
    a=[]
    i=0
    if num:
        a.append(num)
        i=i+1
        if i==n-1:
            a.sort()
            for i in a[1,b-1]:
                sum=sum+i
                c=b-2
                sum=int(sum/c)

    return sum



while(True):
    clock.tick()

    img = sensor.snapshot()



    roi1=[0,0,70,60]

    roi2=[90,0,60,60]

    roi_ball=[0,0,160,60]#待修改

    blobs1 = img.find_blobs([target_threshold],roi=roi1,x_stride=10, y_stride=50)

    blobs2 = img.find_blobs([target_threshold],roi=roi2,x_stride=10, y_stride=50)

    blobs_blob = img.find_blobs([ball_threshold],roi=roi_ball)
    if blobs1 and blobs2:

        first_number=find_c([target_threshold],roi1)

        second_number=find_c([target_threshold],roi2)

        average_number=(first_number+second_number)/2

        average_number=int(average_number)

        if 60<average_number<100 and first_number and second_number:

             average=average_zhi(average_number,10)

             #delay1(average_number)
             #if average


             print(average_number)
             #uart.write('1')
        # time.sleep(1500)
    '''uart.write('2')
    time.sleep(1500)
    uart.write('3')
    time.sleep(1500)
    uart.write('4g')
    time.sleep(1500)'''

这是代码
openmv串口检测到数据，现在为了确保数据的稳定性，我想把十个数放到一个数组中，然后通过串口向单片机发送，我写好时候为什么只返回0，并没有我想要的坐标值

[3icr]

@3icr 我的这个函数为什么一直返回零

def average_zhi(num,n):
    sum=0
    a=[]
    i=0
    if num:
        a.append(num)
        i=i+1
        if i==n-1:
            a.sort()
            for i in a[1,b-1]:
                sum=sum+i
                c=b-2
                sum=int(sum/c)

    return sum

[kidswong999]

我不知道你的函数为什么错了，我没法检查。

[3icr]

@kidswong999 def average_zhi(num,n):
sum=0
a=[]
i=0
if num:
a.append(num)
i=i+1
if i==n-1:
a.sort()
for i in a[1,b-1]:
sum=sum+i
c=b-2
sum=int(sum/c)

return sum

这个函数为什么一直返回零