Thank you for this nice crate. When trying to set up my rpi as a bluetooth keyboard I run into the following error, specifically while setting the device class:
Error: Xfer { source: Bluez { source: CommandError { opcode: SetDeviceClass, status: InvalidParams } } }Where Xfer is my own Error enum.
This is roughly my program:
pub async fn run() -> Result<(), Error> {
let mut client = BlueZClient::new().unwrap();
let version = client.get_mgmt_version().await?;
trace!(
"management version: {}.{}",
version.version,
version.revision
);
let controllers = client.get_ext_controller_list().await?;
let (controller, type_is, bus) = controllers.first().with_context(|| NoControllers)?;
trace!(
"got controller:\n{:?} ({:?}, {:?})",
controller,
type_is,
bus
);
trace!(
"info:\n{:#?}",
client.get_controller_info(*controller).await?
);
let ctrl_settings = client
.set_powered(
*controller,
true
)
.await?;
trace!("controller settings after power on: {:?}", ctrl_settings);
let ctrl_settings = client
.set_connectable(
*controller,
true
)
.await?;
trace!("controller settings after connectable: {:?}", ctrl_settings);
let ctrl_settings = client
.set_discoverable(
*controller,
DiscoverableMode::Limited,
Some(60)
)
.await?;
trace!("controller settings after discoverable: {:?}", ctrl_settings);
let return_classes = client
.set_device_class(
*controller,
DeviceClass::Peripheral {
keyboard: true,
pointer: false,
class: PeripheralDeviceClass::Uncategorized,
},
)
.await?;
trace!("set device class, got: {:?}", return_classes);
Ok(())
}It's notable however, that using the command line to set the device class is working:
sudo hciconfig hci0 class 0x002540
After running the cli above, the settings have properly updated:
ControllerInfo {
address: Address {
bytes: [
248,
250,
50,
235,
39,
184,
],
},
bluetooth_version: 7,
manufacturer: 15,
supported_settings: BitFlags<ControllerSetting> {
bits: 0b11011111111111111,
flags: Powered | Connectable | FastConnectable | Discoverable | Pairable | LinkLevelSecurity | SecureSimplePairing | BREDR | HighSpeed | LE | Advertising | SecureConnection | DebugKeys | Privacy | StaticAddress | PhyConfiguration,
},
current_settings: BitFlags<ControllerSetting> {
bits: 0b101011010011,
flags: Powered | Connectable | Pairable | SecureSimplePairing | BREDR | LE | SecureConnection,
},
class_of_device: (
Peripheral {
keyboard: true,
pointer: false,
class: Uncategorized,
},
BitFlags<ServiceClass> {
bits: 0b0,
},
),
name: "raspberrypi",
short_name: "",
}I'm new to working with bluetooth so I'm not sure what the problem is, but I thought it might be that the DeviceClass wasn't being converted into the correct u16 - indeed my device class seems to convert to 0x540, but making exec_command public and calling it with an explicit class of 0x2540 encounters the same error.
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