Constants done, start creating main class

Sources/SwiftRPLidar/SwiftRPLidar.swift

@@ -1,3 +1,51 @@
+import foundation
+
+struct Constants{
+    static let SYNC = 0xA5
+    static let SYNC2 = 0x5A
+
+    static let GET_INFO = 0x50
+    static let GET_HEALTH = 0x52
+
+    static let STOP = 0x25
+    static let RESET = 0x40
+
+    static let SCAN = 0x20
+    static let FORCE_SCAN = 0x21
+
+    static let DESCRIPTOR_LEN = 7
+    static let INFO_LEN = 20
+    static let HEALTH_LEN = 3
+
+    static let INFO_TYPE = 4
+    static let HEALTH_TYPE = 6
+    static let SCAN_TYPE = 129
+
+    static let MAX_MOTOR_PWM = 1023
+    static let DEFAULT_MOTOR_PWM = 660
+    static let SET_PWM_BYTE = 0xF0
+}
+
+enum HEALTH_STATUSES {
+    case GOOD, WARNING, ERROR
+}
+
 struct SwiftRPLidar {
     var text = "Hello, World!"
 }
+
+class RPLidar{
+    private var serialPort: String
+    private var timeout
+    private var motor
+    private var baudrate
+
+    init?(port: String, baudrate: Int = 115200, timeout: Int = 1){
+        self.serialPort = port
+        self.baudrate = baudrate
+        self.timeout = timeout
+    }
+
+    func connect(){
+    }
+}