eng.alamin
New Member
hello
when i added this function into my c18 code i had hung in execution
am using pic18f4550
some buddy's said to me that i may facing stack over flaw case although there is no warnings or error message during compiling
but i increased stack first to 512 but nothing change so i jump to 1024 stack i removed all usb stack .
all that and nothing change these is function which cause hung in process
---------------
but when i remove c *= atan2( y , a ); program run good in MCU
help !! please
when i added this function into my c18 code i had hung in execution
am using pic18f4550
some buddy's said to me that i may facing stack over flaw case although there is no warnings or error message during compiling
but i increased stack first to 512 but nothing change so i jump to 1024 stack i removed all usb stack .
all that and nothing change these is function which cause hung in process
---------------
Code:
float dstance( float lat1, float lon1, float lat2, float lon2)
{
static float a,c , y ;
float d;
lon1 *= 3.14159265 / 180;
lat1 *= 3.14159265 / 180;
lon2 *= 3.14159265 / 180;
lat2 *= 3.14159265 / 180;
a = sin( (lat2 - lat1)/2) ;
a *= sin((lat2 - lat1)/2) ;
y = cos(lat1) * cos(lat2) ;
y *= sin((lon2 - lon1)/2) ;
y *= sin((lon2 - lon1)/2);
y += a ;
c = 2 ;
a = sqrt(1-(y ));
y = sqrt(y) ;
c *= atan2( y , a );
d = 6371 * c;
return 6371 * c;
}but when i remove c *= atan2( y , a ); program run good in MCU
help !! please