added open flag indicator for FTDI

hardware/interfaces.go

@@ -20,6 +20,7 @@ type PeripheralInfo struct {
 	Name         string                 `yaml:"name"`     // Name of the peripheral
 	SerialNumber string                 `yaml:"sn"`       // S/N of the peripheral
 	ProtocolName string                 `yaml:"protocol"` // Protocol name of the peripheral
+	IsOpen       bool                   // Open flag for peripheral connection
 	Settings     map[string]interface{} `yaml:"settings"` // Peripheral settings
 }