数据详解：$GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,<12>*hh
<1> UTC 时间，hhmmss(时分秒)格式
<2> 定位状态，A=有效定位，V=无效定位
<3> 纬度ddmm.mmmm(度分)格式(前面的0也将被传输)
<4> 纬度半球N(北半球)或S(南半球)
<5> 经度dddmm.mmmm(度分)格式(前面的0也将被传输)
<6> 经度半球E(东经)或W(西经)
<7> 地面速率(000.0~999.9节，前面的0也将被传输)
<8> 地面航向(000.0~359.9度，以真北为参考基准，前面的0也将被传输)
<9> UTC 日期，ddmmyy(日月年)格式
<10> 磁偏角(000.0~180.0度，前面的0也将被传输)
<11> 磁偏角方向，E(东)或W(西)
<12> 模式指示(仅NMEA01833.00版本输出，A=自主定位，D=差分，E=估算，N=数据无效)
"$GPRMC," + "060949.000" +",A,3150.7815,N,11711.9239,E,2.87,314.13," + "050314" + ",,,D*69"
"""
$GNRMC,092846.400,A,3029.7317,N,10404.1784,E,000.0,183.8,070417,,,A*73
$GNRMC,
092846.400, // UTC时间，hhmmss.sss(时分秒.毫秒)格式
A, // 定位状态，A=有效定位，V=无效定位
3029.7317,N, // 纬度
10404.1784,E, // 经度
000.0, // 地面速率
183.8, // 地面航向
070417, // UTC日期
, // 磁俯角
, // 磁方向角
A*73 // 模式指示
"""
#coding:utf-8
#!/usr/bin/python3
import sys,os
import re
import logging
import datetime
#add path for import module
filePath = os.getcwd()
sys.path.append(filePath)
from Com_Utilities.FlexConfig import ResourcesConfig as flexConfig
from Com_Utilities.Uart import CSerial as Uart
from Com_Utilities.ResourceHandler import resourceHandler as Resource
__all__ = ["GPS_Fake"]
"""
GPS data packet format:
数据详解：$GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,<12>*hh
<1> UTC 时间，hhmmss(时分秒)格式
<2> 定位状态，A=有效定位，V=无效定位
<3> 纬度ddmm.mmmm(度分)格式(前面的0也将被传输)
<4> 纬度半球N(北半球)或S(南半球)
<5> 经度dddmm.mmmm(度分)格式(前面的0也将被传输)
<6> 经度半球E(东经)或W(西经)
<7> 地面速率(000.0~999.9节，前面的0也将被传输)
<8> 地面航向(000.0~359.9度，以真北为参考基准，前面的0也将被传输)
<9> UTC 日期，ddmmyy(日月年)格式
<10> 磁偏角(000.0~180.0度，前面的0也将被传输)
<11> 磁偏角方向，E(东)或W(西)
<12> 模式指示(仅NMEA01833.00版本输出，A=自主定位，D=差分，E=估算，N=数据无效)
"$GPRMC," + "060949.000" +",A,3150.7815,N,11711.9239,E,2.87,314.13," + "050314" + ",,,D*69"
time format: 080650.000 & 08:06:50.000
date format: 311219 & 2019/12/31
"""
"""
$GNRMC,092846.400,A,3029.7317,N,10404.1784,E,000.0,183.8,070417,,,A*73
$GNRMC,
092846.400, // UTC时间，hhmmss.sss(时分秒.毫秒)格式
A, // 定位状态，A=有效定位，V=无效定位
3029.7317,N, // 纬度
10404.1784,E, // 经度
000.0, // 地面速率
183.8, // 地面航向
070417, // UTC日期
, // 磁俯角
, // 磁方向角
A*73 // 模式指示
"""
class GPS_Fake(Uart):
def __init__(self, userName, userID):
self.resource = Resource();
# serial port message: [0]-port, [1]-baud
serialportMsg = self.resource.get_Serial_Or_IP(userName,userID)
Uart.__init__(self, serialportMsg[0], int(serialportMsg[1]), 10)
self.Serial_Create()
def __GPS_CheckSum__(self, string ):
checksum = 0
val = bytes(string)
for index in range(len(val)):
checksum ^= val[index]
return checksum
#time format: 080650.000 & 08:06:50.000
def GPS_CurrentFormatTime(self):
now_time = datetime.datetime.now()
strTime = now_time.strftime("%H%M%S.%f")
str = strTime.split('.')
micSecond = str[1][0:3]
nowTime = str[0] + "." + micSecond
return nowTime
#time format: 260419 & 2019/04/26
def GPS_CurrentFormatDate(self):
now_time = datetime.datetime.now()
covYear = now_time.year-2000
nowDate = "%02d%02d%02d" %(now_time.day,now_time.month,covYear)
return nowDate
def GPRMC_SendMessage(self, time, date):
gpsMessage = "GPRMC," + time + ",A,3150.7815,N,12123.5344,E,2.87,314.13," + date + ",,,D"
checkSum = self.__GPS_CheckSum__(gpsMessage)
Message = "$" + gpsMessage + "*" + str(checkSum, encoding = "utf8")+ "\r\n"
self.Serial_WriteString(Message)
def GPRMC_SendMessage(self, time, date, latitude, longitude):
gpsMessage = "GPRMC," + time + ",A," + latitude +",N,"+ longitude + ",E,2.87,314.13," + date + ",,,D"
checkSum = self.__GPS_CheckSum__(gpsMessage)
Message = "$" + gpsMessage + "*" + str(checkSum, encoding = "utf8")+ "\r\n"
self.Serial_WriteString(Message)
def GNRMC_SendMessage(self, time, date):
gpsMessage = "GNRMC," + time + ",A,3150.7815,N,12123.5344,E,2.87,314.13," + date + ",,,A"
checkSum = self.__GPS_CheckSum__(gpsMessage)
Message = "$" + gpsMessage + "*" + str(checkSum, encoding = "utf8")+ "\r\n"
self.Serial_WriteString(Message)
def GNRMC_SendMessage(self, time, date, latitude, longitude):
gpsMessage = "GNRMC," + time + ",A," + latitude +",N,"+ longitude + ",E,2.87,314.13," + date + ",,,A"
checkSum = self.__GPS_CheckSum__(gpsMessage)
Message = "$" + gpsMessage + "*" + str(checkSum, encoding = "utf8")+ "\r\n"
self.Serial_WriteString(Message)
def GPS_Stop(self):
self.Serial_Close()
#test example
if __name__ == '__main__':
gps_test = GPS_Fake()
gps_test.Serial_Create()