value based on gain

internal/device/state.go

@@ -23,6 +23,7 @@ type DeviceState struct {
 
 	sensorValue int // Default 2067 (ideal rest value)
 	jitterRange int // Default 10 (means ±10)
+	gain        int // Default 50 (TUI gain slider, 1-100)
 
 	connectedClients int // Track number of connected BLE clients
 }
@@ -46,6 +47,7 @@ func NewDeviceState() *DeviceState {
 		ncParam:          true, // Default NO mode (1)
 		sensorValue:      2067,
 		jitterRange:      10,
+		gain:             50,
 		connectedClients: 0,
 	}
 }
@@ -135,6 +137,7 @@ func (s *DeviceState) ResetToDefaults() {
 	s.ncParam = true // Default NO mode (1)
 	s.sensorValue = 2067
 	s.jitterRange = 10
+	s.gain = 50
 }
 
 // SetSensorValue sets the current sensor value
@@ -158,6 +161,20 @@ func (s *DeviceState) SetJitterRange(jitter int) {
 	s.jitterRange = jitter
 }
 
+// GetGain returns the current gain value
+func (s *DeviceState) GetGain() int {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.gain
+}
+
+// SetGain sets the gain value
+func (s *DeviceState) SetGain(gain int) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	s.gain = gain
+}
+
 // TriggerAlarm triggers an alarm with the given type ("TRIGGERED" or "TAMPER")
 func (s *DeviceState) TriggerAlarm(alarmType string) {
 	s.mu.Lock()