Array and ASCII

[SteveB]

Have you tried to send some test strings? something like:

SEROUT2 bob, baud, ["$GPRMC,220516,A,5133.82,N,00042.24,W,173.8,231.8,1 30694,004.2,W*70"]



If that works, try this (assuming Heading is the variable that contians your heading data):

SEROUT2 bob, baud, ["$GPRMC,220516,A,5133.82,N,00042.24,W,173.8,",DEC3 Heading,".0,130694,004.2,W*70"]

[Seahound1]

Tried that too....just testin to see if I can split the Array....send upto 48 then insert dec3 heading and then send the remainder of the string....see if that works....worth a try....starting to bang my head against the wall here :>)
Serout2 bob, baud, [Str WPT_array\48,dec3 heading, Str WPT_array_2\13,13,10] just tried this as well and that doesn't work....oh well

[SteveB]

starting to bang my head against the wall here :>)

Well, that's normally when the break through occurs.

[Darrel Taylor]

The OSD may be verifying the Checksum in the NMEA sentance.
When it doesn't match, it'll throw away the whole thing.

If so, you'll need to recalculate it each time.
http://www.picbasic.co.uk/forum/showthread.php?t=1469
http://rietman.wordpress.com/2008/09...nmea-checksum/

[Seahound1]

The code has the checksum calculation in it....but I have cracked it!

For some reason I don't understand ....not unusual tho......if the Array is constructed the other way around..
WPT_array[44]=Dec_off Dig 1+"0"
WPT_array[45]=Dec_off Dig 0+"0"
WPT_array[46]="."
WPT_array[47]=Dec_off Dig 0+"0"
WPT_array[48]=","
[B]WPT_array[49]= "0" + heading dig 2
WPT_array[50]= "0" + heading dig 1 'Course Dig 2+"0"
WPT_array[51]= "0" + heading dig 0

so the "0" is in front of the variable it works......then you just add a bit of code to fill the array with the heading and hey presto! It has taken a lot of head banging and scratching.

[SteveB]

I suspect something else is going on. As a test, I constructed my own array and sent the data out to an LCD using the STR variable\6 command. Worked either way I constructed the equation.

ab_Test[0] = "0" + Heading DIG 2
ab_Test[1] = "0" + Heading DIG 1
ab_Test[2] = "0" + Heading DIG 0
ab_Test[3] = Heading DIG 2 + "0"
ab_Test[4] = Heading DIG 1 + "0"
ab_Test[5] = Heading DIG 0 + "0"

[Seahound1]

You're right there is something else going on....turned the power off and back on and now it's not working again! trying to think of what I did the first time I got it working.