feat: Implemented scope on Ethernet for Icom

internal/cat/cat.go

@@ -32,6 +32,16 @@ type Backend interface {
 	SetPTT(on bool) error
 }
 
+// interruptible is an OPTIONAL backend capability: abort an in-progress Connect
+// quickly. The network Icom backend's Connect blocks for up to tens of seconds
+// (UDP handshake + login + waiting for the rig to boot from standby); without a
+// way to interrupt it, Stop()/Start() would freeze on the poll goroutine until
+// the dial gives up — which is why Settings "Save & Close" hung for ~1 min once
+// the link was lost. Backends that don't implement it are simply not interrupted.
+type interruptible interface {
+	Interrupt()
+}
+
 // RigState is the snapshot exchanged with the frontend.
 //
 // FreqHz follows the ADIF FREQ convention: it is the TX frequency. When the
@@ -156,6 +166,7 @@ func (m *Manager) stopLocked() {
 	m.mu.Lock()
 	stop := m.stopCh
 	done := m.doneCh
+	b := m.backend
 	m.stopCh = nil
 	m.doneCh = nil
 	m.cmdCh = nil
@@ -164,6 +175,11 @@ func (m *Manager) stopLocked() {
 	if stop != nil {
 		close(stop)
 	}
+	// Abort any in-progress Connect so we don't block on a slow network dial
+	// (the poll goroutine can be tens of seconds deep in the Icom UDP handshake).
+	if iv, ok := b.(interruptible); ok {
+		iv.Interrupt()
+	}
 	if done != nil {
 		<-done
 	}
@@ -403,6 +419,22 @@ type IcomTXState struct {
 	Preamp    int    `json:"preamp"`        // 0=off, 1=P.AMP1, 2=P.AMP2
 	Att       int    `json:"att"`           // dB attenuation, 0=off
 	Filter    int    `json:"filter"`        // 1 | 2 | 3 (FIL1/2/3)
+	// Antenna (IC-7610 = ANT1/ANT2).
+	Antenna int `json:"antenna"` // 1 | 2 (0 = unknown)
+	// Filter fine controls: Twin PBT + manual notch (0-100, 50 = centre).
+	PBTInner    int  `json:"pbt_inner"`
+	PBTOuter    int  `json:"pbt_outer"`
+	ManualNotch bool `json:"manual_notch"`
+	NotchPos    int  `json:"notch_pos"`
+	// TX extras.
+	Squelch   int  `json:"squelch"`
+	Comp      bool `json:"comp"`
+	CompLevel int  `json:"comp_level"`
+	Monitor   bool `json:"monitor"`
+	MonLevel  int  `json:"mon_level"`
+	VOX       bool `json:"vox"`
+	VOXGain   int  `json:"vox_gain"`
+	AntiVOX   int  `json:"anti_vox"`
 }
 
 // IcomController is an OPTIONAL backend capability (the Icom CI-V backend): the
@@ -436,6 +468,20 @@ type IcomController interface {
 	StopCW() error           // abort the CW message being sent
 	SetKeySpeed(int) error   // CW keyer speed in WPM
 	SetBreakIn(int) error    // CW break-in: 0=OFF, 1=SEMI, 2=FULL
+	SetAntenna(int) error    // 1 = ANT1, 2 = ANT2
+	SetPBTInner(int) error   // Twin PBT inside (0-100, 50 = centre)
+	SetPBTOuter(int) error   // Twin PBT outside (0-100, 50 = centre)
+	SetManualNotch(bool) error
+	SetNotchPos(int) error // manual-notch position (0-100, 50 = centre)
+	SetSquelch(int) error
+	SetComp(bool) error
+	SetCompLevel(int) error
+	SetMonitor(bool) error
+	SetMonLevel(int) error
+	SetVOX(bool) error
+	SetVOXGain(int) error
+	SetAntiVOX(int) error
+	SetPower(bool) error // turn the transceiver on/off (manual — never auto on connect)
 }
 
 // ScopeSweep is one complete spectrum-scope sweep reassembled from the Icom's