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package service
import (
"github.com/godbus/dbus/v5"
log "github.com/sirupsen/logrus"
)
// Confirm This method doesn't expect a reply so it is just a
// confirmation that value was received.
//
// Possible Errors: org.bluez.Error.Failed
func (s *Char) Confirm() *dbus.Error {
log.Debug("Char.Confirm")
return nil
}
// StartNotify Starts a notification session from this characteristic
// if it supports value notifications or indications.
//
// Possible Errors: org.bluez.Error.Failed
// org.bluez.Error.NotPermitted
// org.bluez.Error.InProgress
// org.bluez.Error.NotSupported
func (s *Char) StartNotify() *dbus.Error {
log.Debug("Char.StartNotify")
return nil
}
// StopNotify This method will cancel any previous StartNotify
// transaction. Note that notifications from a
// characteristic are shared between sessions thus
// calling StopNotify will release a single session.
//
// Possible Errors: org.bluez.Error.Failed
func (s *Char) StopNotify() *dbus.Error {
log.Debug("Char.StopNotify")
return nil
}
// ReadValue Issues a request to read the value of the
// characteristic and returns the value if the
// operation was successful.
//
// Possible options: "offset": uint16 offset
// "device": Object Device (Server only)
//
// Possible Errors: org.bluez.Error.Failed
// org.bluez.Error.InProgress
// org.bluez.Error.NotPermitted
// org.bluez.Error.NotAuthorized
// org.bluez.Error.InvalidOffset
// org.bluez.Error.NotSupported
func (s *Char) ReadValue(options map[string]interface{}) ([]byte, *dbus.Error) {
log.Debug("Characteristic.ReadValue")
if s.readCallback != nil {
b, err := s.readCallback(s, options)
if err != nil {
return nil, dbus.MakeFailedError(err)
}
return b, nil
}
return s.Properties.Value, nil
}
//WriteValue Issues a request to write the value of the
// characteristic.
//
// Possible options: "offset": Start offset
// "device": Device path (Server only)
// "link": Link type (Server only)
// "prepare-authorize": boolean Is prepare
// authorization
// request
//
// Possible Errors: org.bluez.Error.Failed
// org.bluez.Error.InProgress
// org.bluez.Error.NotPermitted
// org.bluez.Error.InvalidValueLength
// org.bluez.Error.NotAuthorized
// org.bluez.Error.NotSupported
func (s *Char) WriteValue(value []byte, options map[string]interface{}) *dbus.Error {
log.Trace("Characteristic.WriteValue")
val := value
if s.writeCallback != nil {
log.Trace("Used write callback")
b, err := s.writeCallback(s, value)
val = b
if err != nil {
return dbus.MakeFailedError(err)
}
} else {
log.Trace("Store directly to value (no callback)")
}
// TODO update on Properties interface
s.Properties.Value = val
err := s.iprops.Instance().Set(s.Interface(), "Value", dbus.MakeVariant(value))
return err
}
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