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import asyncio
import socket
UDP_IP = " 0.0.0.0 " # 监听所有网络接口
UDP_PORT = 8887
def hex_to_dec_meters ( hex_str ) :
# 将十六进制字符串转换为十进制整数
decimal_value = int ( hex_str , 16 )
# 将毫米转换为米，并保留小数点后三位
meters = round ( decimal_value / 1000 , 3 )
return meters
async def getOnce ( ) :
try :
socket . timeout ( 1 )
sock = socket . socket ( socket . AF_INET , socket . SOCK_DGRAM )
sock . bind ( ( UDP_IP , UDP_PORT ) )
sock . settimeout ( 1 )
data , addr = await asyncio . get_event_loop ( ) . run_in_executor ( None , sock . recvfrom , 1024 )
decoded_data = data . decode ( ' utf-8 ' ) # 解码收到的数据（ ）
# 在此处解析数据并输出相应字段
# 例如，根据您提供的通信数据例子，您可以解析不同字段的值
parts = decoded_data . split ( ' ' )
if parts [ 0 ] == ' mc ' and len ( parts ) == 15 :
# 提取示例中的各个字段
head = parts [ 0 ]
user = parts [ 1 ]
range0 = parts [ 2 ]
range0_meters = hex_to_dec_meters ( range0 )
if range0_meters > = 2 :
return " "
# range1 = parts[3]
# range2 = parts[4]
# range3 = parts[5]
# range4 = parts[6]
# range5 = parts[7]
# range6 = parts[8]
# range7 = parts[9]
# nranges = parts[10]
# rseq = parts[11]
# rangtime = parts[12]
ridt_ida = parts [ 13 ]
# diagnosis = parts[14]
# 在这里可以使用解析后的数据进行处理或打印输出
sock . close ( )
return ridt_ida
except socket . timeout :
print ( " 未接收到数据或超时 " )
return " "
# 关闭套接字（这部分代码可能需要在适当的时候调用）
# sock.close()
