module

Package Example

This example demonstrates how to build a package. A package is a collection of functions that are installed on the device and can be remotely invoked from any device with libflipper installed.

Steps to Follow

Install libflipper.

make libflipper

Build the Package

make

If using FVM open a seperate terminal window and run.

fvm

If working with FVM be sure to replace the following line inside your code.

flipper_attach();

with

struct _lf_device *fvm = flipper_attach_network("localhost");

Install the Package

make install

The executable code will now be on the attached Flipper device.

If using FVM then run

fvm path/to/module.so

FVM will now return results in the terminal window. These results can be analyzed in order to verify the programming pipleline and ensure that the package is working correctly.

Running

A package doesn't have an entry point or main function, so no code is run when it is loaded. Instead, code is run when a call is made to a function that exists inside the package.

This example provides a test program in the host folder. This program calls the my_func function and is built for the host. To execute the function my_func on the device, simply call the host program.

./build/host/example

If you have an LED attached to IO_1 on the board, it will change state each time the test program is run. The host program is remotely invoking the function that does this on the attached device.