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【点灯鼠教程】[Maixpy]+[vofa+]实现K210串口图传【tcp图传】

作者:互联网

本节我们将进行VOFA+的tcp协议使用。
通过tcp,我们将可以通过网络,无线图传到上位机,很有实际意义。
由于博主使用的是bit板,自带的没有网卡固件,本节我们将使用外挂网卡(esp01s,小巧玲珑)

 

关于K10如何使用外挂网卡,我将于另外一个帖子详细讲解,本贴不另作赘述。
将esp01s和K210链接
第一步,配置wifi及socket

from fpioa_manager import fm  
fm.register(10, fm.fpioa.UART1_TX, force=True)  
fm.register(9, fm.fpioa.UART1_RX, force=True)  
from machine import UART  
import sensor, image, time  
import struct  
import network,socket  
from setuart import setUART as SU  
#wifi config  
ssid="1234"  
key="11111111"  
baudrate=2048000  
SU.setuart(baudrate)  
uart = UART(UART.UART1,baudrate, timeout=1000, read_buf_len=10240)#创建外部可访问的uart  
net=network.ESP8285(uart)  
net.connect(ssid, key)  
A=net.ifconfig()#cheak ip address. Your sock addr should be same to this  
print(A)  
#wifi config end  
  
#socket config  
ADDR = ("192.168.137.1", 1347)  
sock = socket.socket()  
sock.connect(ADDR)  
sock.settimeout(10)  
#socket config end  

这里需要注意的是,esp01s默认的串口波特率是115200,传输数据时会很慢。于是我通过setuart,在esp01s链接后,修改波特率为204800(这里使用的是软配置,重启后将恢复到115200)
sock的地址,要与ifconfig打印出来的第三个数保持一致。

('192.168.137.196', '255.255.255.0', '192.168.137.1', '0', '0', 'd2:57:7b:35:a7:e1', '1234')  

连接上sock以后,我们就可以发送数据了。这里继续使用justfloat协议。
稍作修改,将uart.write改为sock.send即可使用。

img = sensor.snapshot()  
img = img.compress(quality=10)#压缩图片为jpg,质量为10%  
perFrame[0] = 0  
perFrame[1] = img.size()  
perFrame[2] =img.width() # 图片宽度  
perFrame[3] = img.height() # 图片高度  
perFrame[4] =27  
img_bytes = img.to_bytes() #转换图片为byte数组  
  
#####此处为vota+上位机的前导帧,使用其他接收时自行修改#####  
for i in perFrame:  
buff=i.to_bytes(4,'little')  
sock.send(buff)  
sock.send(bytes(prendFrame))  
######################################################  
block = int(len(img_bytes)/2048)  
for i in range(block):  
sock.send(img_bytes[i*2048:(i+1)*2048])  
sock.send(img_bytes[block*2048:])#按块发送  

这里需要注意的是,tcp发包时有数据上限,所以要将数据切割成小于上限的n个小块发送。
vofa+打开后,设置为下图所示:

 

效果如图所示:

 

视频就不上了,惨不忍睹。。效果只能达到1fps,调了一下午没定位到问题,目测esp01s体质太差?或者是杜邦线太长?有能解决的希望回复下。


文章来源于Sipeed点灯鼠,原文链接:https://bbs.sipeed.com/thread/530

搬运请注明原文地址


最后,贴上setuart源码:

import time, network  
from machine import UART  
from fpioa_manager import fm  
class setUART():  
def init():  
fm.register(10, fm.fpioa.UART1_TX, force=True)  
fm.register(9, fm.fpioa.UART1_RX, force=True)  
__class__.uart = UART(UART.UART1, 115200, timeout=1000, read_buf_len=8192)  
  
def _at_cmd(cmd="AT\r\n", resp="OK\r\n", timeout=20):  
__class__.uart.write(cmd) # "AT+GMR\r\n"  
time.sleep_ms(timeout)  
tmp = __class__.uart.read()  
# print(tmp)  
if tmp and tmp.endswith(resp):  
return True  
return False  
  
def setuart(baudrate=1152000, reply=5):  
__class__.init()  
for i in range(reply):  
print('set baudrate=%d...'%baudrate)  
time.sleep_ms(500) # at start > 500ms  
if __class__._at_cmd(timeout=500):  
break  
__class__._at_cmd()  
__class__._at_cmd('AT+UART_CUR=%d,8,1,0,0\r\n'%baudrate, "OK\r\n")#设置当前波特率,重启模块恢复到115200  
if __name__ == "__main__":  
setUART.setuart()  
uart2 = UART(UART.UART1,1152000, timeout=1000, read_buf_len=10240)  
while(True):  
uart2.write("AT\r\n")  
B=uart2.read()  
print(B)  

补一下代码:

# Untitled - By: Lithromantic - 周二 3月 9 2021
from fpioa_manager import fm
fm.register(10, fm.fpioa.UART1_TX, force=True)
fm.register(9, fm.fpioa.UART1_RX, force=True)
from machine import UART
import sensor, image, time
import struct
import network,socket
from setuart import setUART as SU
#wifi config
ssid="1234"
key="11111111"
baudrate=1152000
SU.setuart(baudrate,1)
uart = UART(UART.UART1,baudrate, timeout=1000, read_buf_len=10240)#创建外部可访问的uart
net=network.ESP8285(uart)
net.connect(ssid, key)
#A=net.ifconfig()#cheak ip address. Your sock addr should be same to this
ADDR={}
ADDR[0]=net.ifconfig()[2]
print(ADDR[0])
#wifi config end

#socket config
ADDR = ("{}".format(ADDR[0]), 1347)
sock = socket.socket()
sock.connect(ADDR)
sock.settimeout(10)
#socket config end

#sensor.config
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.set_windowing((200,200))
sensor.skip_frames(time = 2000)
#sensor.config end

perFrame=[0,0,0,0,0]
prendFrame =[0x00, 0x00, 0x80, 0x7f,0x00, 0x00, 0x80, 0x7f]
clock = time.clock()
while(True):
    clock.tick()
    img = sensor.snapshot()
    img = img.compress(quality=10)#压缩图片为jpg,质量为10%
    perFrame[0] = 0
    perFrame[1] = img.size()
    perFrame[2] =img.width()   # 图片宽度
    perFrame[3] = img.height() # 图片高度
    perFrame[4] =27
    img_bytes = img.to_bytes() #转换图片为byte数组
    #####此处为vota+上位机的前导帧,使用其他接收时自行修改#####
    for i in perFrame:
        buff=i.to_bytes(4,'little')
        sock.send(buff)
    sock.send(bytes(prendFrame))
   ######################################################
    block = int(len(img_bytes)/2048)
#    for i in range(block):
#        sock.send(img_bytes[i*2048:(i+1)*2048])
#        sock.send(img_bytes[block*2048:])#按块发送
    sock.send(img_bytes)#以数组形式发送图片
 #   time.sleep_ms(20)

3.12更新

更新日志:

1.大幅修改了代码排版,美观度提升了

2.完善了程序逻辑,稳定性提升了

# Untitled - By: Lithromantic - 周二 3月 9 2021
from fpioa_manager import fm
fm.register(10, fm.fpioa.UART1_TX, force=True)
fm.register(9, fm.fpioa.UART1_RX, force=True)
from machine import UART
import sensor, image, time
import network,socket,gc
from setuart import setUART as SU
perFrame=[0,0,320,240,27,0x7F800000,0x7F800000]
ssid="1234"
key="11111111"
def set_net(baudrate=1152000):
    #wifi config

    SU.setuart(baudrate,1)
    uart = UART(UART.UART1,baudrate, timeout=1000, read_buf_len=10240)#创建外部可访问的uart
    net=network.ESP8285(uart)
    net.disconnect()
    net.connect(ssid, key)
    #A=net.ifconfig()#cheak ip address. Your sock addr should be same to this
    ADDR={}
    ADDR[0]=net.ifconfig()[2]
    print(ADDR[0])
    #wifi config end

    #socket config
    ADDR = ("{}".format(ADDR[0]), 1347)
    return ADDR
    #socket config end
def set_img():
    #sensor.config
    sensor.reset()
    sensor.set_pixformat(sensor.RGB565)
    sensor.set_framesize(sensor.QVGA)
    sensor.skip_frames(time = 2000)
    #sensor.config end
def get_img(quality=70):
    img = sensor.snapshot()
    img = img.compress(quality)#压缩图片为jpg,质量为10%
    perFrame[1] = img.size()
    img_bytes = img.to_bytes() #转换图片为byte数组
    return img_bytes
def send_img(img_bytes):
    sendbuff=b''
    for i in perFrame:
        buff=i.to_bytes(4,'little')
        sendbuff=sendbuff+buff
    sock.send(sendbuff)#以数组形式发送图片
    block = int(len(img_bytes)/2048)
    for i in range(block):
       sock.send(img_bytes[i*2048:(i+1)*2048])
       sock.send(img_bytes[block*2048:])
clock = time.clock()

sock = socket.socket()
sock.connect(set_net(2048000))
sock.settimeout(10)
set_img()

while(True):
    send_img(get_img(50))

标签:vofa,img,bytes,sock,串口,图传,import,sensor,fm
来源: https://blog.csdn.net/xuguoliang757/article/details/117361261