At the end of the fields I added a new one that shows one of 16 compass points that is easy to understand (N, S, NNE, etc).
The new code is colored RED and is to show how to update this program. For those who are new to SmartBASIC, this example shows how you can udpdate GPS fields in real time. The additions are also updated in real time.
This can be added to the EXAMPLES if desired.
Code: Select all
OPTION BASE 1
OPTION SCREENLOCK OFF
' turn on GPS
SET GPS ON
'r' 'Load Compass Positions
DIM DIR$(17)
FOR I = 1 TO 17
READ DIR$(I)
NEXT I
''
' prepare UI
GRAPHICS
DRAW FONT NAME "Optima-Regular"
DRAW FONT SIZE 25
DRAW COLOR .7,1,1
DRAW TEXT "Latitude:" AT 15,20
FIELD "lat" TEXT "N/A" AT 150,20 SIZE 130,30
DRAW TEXT "°" AT 290,20
DRAW TEXT "Longitude:" AT 15,60
FIELD "lon" TEXT "N/A" AT 150,60 SIZE 130,30
DRAW TEXT "°" AT 290,60
DRAW TEXT "Altitude:" AT 15,100
FIELD "alt" TEXT "N/A" AT 150,100 SIZE 80,30
DRAW TEXT "m" AT 240,100
DRAW TEXT "Heading:" AT 15,140
FIELD "head" TEXT "N/A" AT 150,140 SIZE 90,30
DRAW TEXT "°" AT 250,140
DRAW TEXT "Course:" AT 15,180
FIELD "course" TEXT "N/A" AT 150,180 SIZE 80,30
DRAW TEXT "°" AT 240,180
DRAW TEXT "Speed:" AT 15,220
FIELD "speed" TEXT "N/A" AT 150,220 SIZE 80,30
DRAW TEXT "km/h" AT 240,220
'r'!DRAW TEXT "Compass:" AT 15,260
FIELD "compass$" TEXT "N/A" AT 150,260 SIZE 80,30
''
x=-1!y=-1!z=-1!s=-1!c=-1
LOOP:
' get GPS data
IF GPS_COUNT() THEN GET GPS LAT x LON y ALT z SPD s CRS c HAC h VAC v
ch=COMPASS_HEADING()
ca=COMPASS_ACCURACY()
' output GPS data
IF x <> -1 AND h <> -1 THEN FIELD "lat" SET TEXT STR$(x,"#.#######")
IF y <> -1 AND h <> -1 THEN FIELD "lon" SET TEXT STR$(y,"#.#######")
IF z <> -1 AND v <> -1 THEN FIELD "alt" SET TEXT STR$(z,"#.#")
IF ch <> -1 AND ca <> -1 THEN FIELD "head" SET TEXT STR$(ch,"#")&" ± "&STR$(ca,"#")
IF s <> -1 THEN FIELD "speed" SET TEXT STR$(s*3.6,"#.#")
IF c <> -1 THEN FIELD "course" SET TEXT STR$(c,"#.#")
'r'!IF ch <> -1 THEN i=ABS(ch/22.5)+1!compass$=DIR$(i)!FIELD "compass$" SET TEXT compass$
''
GOTO LOOP
'r'points:
DATA "N","NNE","NE","ENE","E","ESE","SE","SSE","S","SSW","SW","WSW","W","WNW","NW","NNW","N"
''
