5ayx 发布的帖子

想利用udp协议把openmv看到的图像传输到电脑端，请问有相关函数可以实现嘛？

您好。我想通过串口将保存在SD卡中的.orb文件传输给电脑，请问可以做到吗？

@kidswong999 openmv4连接了一个CAN收发器，接到can转USB上

@kidswong999

不行，他会报错

用第二种办法没有办法通讯的

历程上说CAN的初始化有两种办法。
第一种:can = CAN(2, CAN.NORMAL, baudrate=250_000, sampling_point=75
第二种：can.init(pyb.CAN.NORMAL, prescaler=16, sjw=2, bs1=7, bs2=3) #250kb/s
但是我用第一种方法进行初始化后可以正常通讯，用第二种办法的时候无法进行通讯，想问问是怎么回事呢？（因为第一种办法没办法设置波特率为800kBps，所以我需要第二种方法自己设置参数使得波特率为800

# CAN Shield Example
#
# This example demonstrates CAN communications between two cameras.
# NOTE: you need two CAN transceiver shields and DB9 cable to run this example.
import pyb
import time, omv
from pyb import CAN

# NOTE: Set to False on receiving node.
TRANSMITTER = False
#can = pyb.CAN(2) 
can = CAN(2, CAN.NORMAL, baudrate=250_000, sampling_point=75)
#can.init(pyb.CAN.NORMAL, prescaler=16, sjw=2, bs1=7, bs2=3) #250kb/s
# NOTE: uncomment to set bit timing manually, for example:
#can.init(CAN.NORMAL,prescaler=18, sjw=1, bs1=8, bs2=3)
can.restart()

if (TRANSMITTER):
    while (True):
        # Send message with id 1
        can.send('Hello', 1)
        time.sleep_ms(1000)

else:
    # Runs on the receiving node.
    if (omv.board_type() == 'H7'): # FDCAN
        # Set a filter to receive messages with id=1 -> 4
        # Filter index, mode (RANGE, DUAL or MASK), FIFO (0 or 1), params
        can.setfilter(0, CAN.RANGE, 0, (1, 1638))
    else:
        # Set a filter to receive messages with id=1, 2, 3 and 4
        # Filter index, mode (LIST16, etc..), FIFO (0 or 1), params
        can.setfilter(0, CAN.LIST16, 0, (1, 2, 3, 4))

    while (True):
        # Receive messages on FIFO 0
        #print(can.any(0))
        message =can.recv(0, timeout=10000)
        messagetex = message[3]
        if (messagetex[0] == 0x01 ):
            print(123)
        else:
            print(message)
       # print(can.any(0))

）

可以把Opencv的库可以放到Openmv中嘛？然后用opencv的函数？