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Ðiều Chỉnh | Xếp Bài |
05-05-2012, 02:30 AM | #1 |
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Tham gia ngày: May 2012
Bài gửi: 1
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Need help with Sim908 GPS code
Hello friends,
I am building a SIM908 GPS module with SMS control. The problem i am facing is i need to convert deg min.min latidude to deg decimal. I have the formula but dont know how to put it in the code This is what the GPS module sends 4,1234.123456,N,7890.123456,E,123123.000,A,A I can receive it and resend it as it is with the below code but i need some maths to be done before sending. eg: 1234.123456 div by 100 = 12.34123456 Once i have this i need to divide the numbers on the right of the decimal by 60 eg: 34123456 div by 60 = 568724.266666 now i want this number to be sent out 12.568724 How can i do it below is my code. ************************************************** *********** 'Gps Read And Write SIM908 '********************************** TRISA = %00000000 TRISB = %00000000 TRISC = %11000000 CMCON = %00000111 'turn off comparators 16F876A ADCON1 = %00000110 'turn off analog inputs 16F876A 'Declare variables Dim i As Word Dim j As Byte Dim k As Byte Dim x As Byte Dim y As Byte Dim n As Byte Dim a As Byte Dim h As Byte Dim t As Byte Dim temp As Byte Dim data(64) As Byte 'buffer for serial data Dim serdata As Byte Dim startmark As Bit Dim gpsreceived As Bit '************************************************* **** 'Definition of OUTPUTS ports Symbol led = PORTC.4 'status LED led = 0 WaitMs 3000 '**** MAIN PROGRAM **** main: led = 1 Hseropen 9600 'initialize serial hw port - port used for modem Gosub wait Hserout "AT+CGPSPWR=1", CrLf 'start gps Gosub wait Hserout "AT+CGPSRST=1", CrLf 'reset gps Gosub wait '********** Main loop ****************** menu: WaitMs 500 'waiting time Gosub get_location Gosub send_location Toggle led Goto menu End get_location: '*********************************** h = 0 i = 0 k = 0 startmark = False gpsreceived = False Hserout "AT+CGPSINF=4", CrLf 'CODE TO RECEIVE GPS INFO loop1: Gosub hserget2 If serdata > 0 Then If serdata = "4" Then gpsreceived = True Endif If serdata = 0x2c And gpsreceived = True Then startmark = True Endif temp = LookUp(0x2c, 0x4e), k 'search for , And Then For N If serdata = temp Then k = k + 1 If k = 2 Then Return Endif Endif If startmark = True Then data(h) = serdata 'store data in buffer If h = 64 Then 'handle buffer overflow h = 0 Else h = h + 1 Endif Endif Endif i = i + 1 If i = 65000 Then Return 'timeout Goto loop1 send_location: '*********************************** If h > 0 Then h = h - 1 'number of digits For k = 1 To h Step 1 temp = data(k) If temp = 0x2c Then Hserout 0x1a, CrLf For k = 0 To 40 Step 1 data(k) = 0x00 Next k Return Endif Hserout temp Next k Endif Return wait: '******************************************* WaitMs 350 Return hserget2: hserget serdata Return ************************************************** *********** Any help will be nice. Matero |
27-02-2015, 02:13 PM | #2 |
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Tham gia ngày: Feb 2015
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Once i have this i need to divide the numbers on the right of the decimal by 60
eg: 34123456 div by 60 = 568724.266666 now i want this number to be sent out 12.568724 How can i do it below is my code.
__________________
NOOR |
20-05-2016, 05:13 PM | #3 |
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Tham gia ngày: May 2016
Bài gửi: 3
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Đây là một câu hỏi tiếng anh khá là khó luôn @@
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