Eagler 19 Work

Create a file named calc_fortran.f90:

subroutine calc_fortran(a, b, res)
    implicit none
    !DEC$ ATTRIBUTES DLLEXPORT, STDCALL :: calc_fortran
    !DEC$ ATTRIBUTES ALIAS:'calc_fortran' :: calc_fortran
double precision, intent(in) :: a, b
double precision, intent(out) :: res
res = a * b + 3.14d0

end subroutine calc_fortran

Note: The !DEC$ directives are specific to the Intel Fortran Compiler (ifort) on Windows. For gfortran on Linux, you would use the BIND(C) attribute.

Compilation (Windows with Intel Fortran): eagler 19 work

ifort /dll calc_fortran.f90

This generates calc_fortran.dll.

Professional surveyors use the Eagler 19 for mapping. To make it work at maximum efficiency: Create a file named calc_fortran

The ESC is the middleman between the battery and the motor.

Reality: Most standard Eagler 19 units are not VTOL. Some modified versions add four vertical motors, but that requires a separate VTOL flight controller and extensive wiring. end subroutine calc_fortran

The FC is a miniature computer running ArduPilot or Betaflight firmware. It contains:

The Workflow: