kaegi / kdri-c-wrapper Goto Github PK

Hi, I would like to use the kdri librairy and kdri-c-wrapper to control my Skylon S crosstrainer.

I try to compile and I got this error :

pi@raspberrypi:~/rust/kdri-c-wrapper $ cargo build --release
Compiling kdri-c-wrapper v0.1.0 (/home/pi/rust/kdri-c-wrapper)
warning: extern fn uses type KdriBrakeMode, which is not FFI-safe
--> src/lib.rs:192:71
|
192 | pub extern fn kdri_set_brake_mode(connection: *mut KdriConnection, v: KdriBrakeMode) -> KdriReturn {
| ^^^^^^^^^^^^^ not FFI-safe
|
= note: #[warn(improper_ctypes_definitions)] on by default
= help: consider adding a #[repr(C)], #[repr(transparent)], or integer #[repr(...)] attribute to this enum
= note: enum has no representation hint
note: the type is defined here
--> src/lib.rs:53:1
|
53 | / enum_from_primitive! {
54 | | #[derive(PartialEq, Eq, Debug, Clone, Copy)]
55 | | pub enum KdriBrakeMode {
56 | | ConstantPower = 0,
57 | | ConstantBrake = 1,
58 | | }
59 | | }
| |_^