feat: added APF for CW in Icom

internal/cat/cat.go

@@ -415,6 +415,7 @@ type IcomTXState struct {
 	NR        bool   `json:"nr"`
 	NRLevel   int    `json:"nr_level"`
 	ANF       bool   `json:"anf"`
+	APF       bool   `json:"apf"` // audio peak filter (CW only)
 	AGC       string `json:"agc,omitempty"` // FAST | MID | SLOW
 	Preamp    int    `json:"preamp"`        // 0=off, 1=P.AMP1, 2=P.AMP2
 	Att       int    `json:"att"`           // dB attenuation, 0=off
@@ -450,6 +451,7 @@ type IcomController interface {
 	SetNR(bool) error
 	SetNRLevel(int) error
 	SetANF(bool) error
+	SetAPF(bool) error
 	SetAGC(string) error
 	SetPreamp(int) error
 	SetAtt(int) error

internal/cat/civ/civ.go

@@ -110,6 +110,7 @@ const (
 	SubSwVOX    = 0x46 // VOX on/off
 	SubSwBreakIn = 0x47 // CW break-in: 0=OFF, 1=SEMI, 2=FULL (needed so 0x17 CW keys TX)
 	SubSwMN     = 0x48 // manual notch on/off
+	SubSwAPF    = 0x32 // audio peak filter on/off (CW only)
 )
 
 // CW break-in modes (CmdSwitch 0x47).

internal/cat/icomserial.go

@@ -1166,6 +1166,9 @@ func (b *IcomSerial) readDSP() {
 	if v, ok := b.readSwitch(civ.SubSwANF); ok {
 		st.ANF = v != 0
 	}
+	if v, ok := b.readSwitch(civ.SubSwAPF); ok {
+		st.APF = v != 0
+	}
 	if v, ok := b.readSwitch(civ.SubSwAGC); ok {
 		st.AGC = agcName(v)
 	}
@@ -1357,6 +1360,14 @@ func (b *IcomSerial) SetANF(on bool) error {
 	return nil
 }
 
+func (b *IcomSerial) SetAPF(on bool) error {
+	if err := b.exec(civ.CmdSwitch, civ.SubSwAPF, boolByte(on)); err != nil {
+		return err
+	}
+	b.setCache(func(s *IcomTXState) { s.APF = on })
+	return nil
+}
+
 func (b *IcomSerial) SetAGC(name string) error {
 	v := agcValue(name)
 	if v == 0 {