feat: bridge reset and register according to specs. boolean begin

Author: eigen-value

examples/simple_bridge/simple_bridge.ino

@@ -11,11 +11,18 @@ void setup() {
 
     pinMode(LED_BUILTIN, OUTPUT);
 
-    bridge.begin();
+    if (!bridge.begin()) {
+        Serial.println("Error initializing bridge");
+        while(1);
+    } else {
+        Serial.println("Bridge initialized successfully");
+    }
 
     if (!bridge.provide("set_led", set_led)) {
         Serial.println("Error providing method: set_led");
-    };
+    } else {
+        Serial.println("Registered method: set_led");
+    }
 
     bridge.provide("add", add);
 
@@ -42,6 +49,7 @@ void loop() {
         Serial.println("Error calling method: multiply");
         Serial.println(bridge.get_error_code());
         Serial.println(bridge.get_error_message());
+        delay(1000);
     };
 
     bridge.notify("signal", 200);

src/bridge.h

@@ -3,6 +3,9 @@
 #ifndef BRIDGE_IMOLA_H
 #define BRIDGE_IMOLA_H
 
+#define RESET_METHOD "$/reset"
+#define BIND_METHOD "$/register"
+
 #include <Arduino_RPClite.h>
 
 
@@ -19,22 +22,34 @@ class Bridge {
     }
 
     // Initialize the bridge
-    void begin() {
+    bool begin() {
         client = new RPCClient(*transport);
         server = new RPCServer(*transport);
+        bool res;
+        return call(RESET_METHOD, res);
     }
 
     template<typename F>
     bool provide(const MsgPack::str_t& name, F&& func) {
+        bool res;
+        if (!call(BIND_METHOD, res, name)) {
+            return false;
+        }
         return server->bind(name, func);
     }
 
     void update() {
+        // Protect the following calls with a mutex if necessary
+        // server->read_request();  // <- inbound
+        // server->serve();         // -> outbound
         server->run();
     }
 
     template<typename RType, typename... Args>
     bool call(const MsgPack::str_t method, RType& result, Args&&... args) {
+        // Protect the following calls with a mutex if necessary
+        // client->send_call();         // -> outbound
+        // client->read_response();     // <- inbound
         return client->call(method, result, std::forward<Args>(args)...);
     }
 
@@ -44,7 +59,7 @@ class Bridge {
     }
 
     String get_error_message() const {
-        return client->lastError.traceback;
+        return (String) client->lastError.traceback;
     }
 
     uint8_t get_error_code() const {