Communicator banner + single char commands

main.cpp

@@ -553,7 +553,7 @@ public:
         m_shader->set_uniform("intensity", 0.5f);
     }
 
-    bool resize_event(const Vector2i& size) override {
+    bool resize_event(const Vector2i &size) override {
         window->set_size(size);
         Screen::resize_event(size);
         return true;
@@ -616,7 +616,9 @@ private:
 struct grbl_listener : public grbl::transport_callbacks {
     void on_connected(grbl::transport *t) override {
         std::cout << "Listener: connected!" << std::endl;
-        t->send("$$");
+        // telnet handshake so that we get the banner. banner won't be coming otherwise
+//        t->send("\xff\xfd\x18\xff\xfd\x20\xff\xfd\x23\xff\xfd\x27");
+        t->send("\xff\xfd\x18");
     }
 
     void on_disconnected(grbl::transport *t) override {
@@ -626,6 +628,11 @@ struct grbl_listener : public grbl::transport_callbacks {
     void on_line_received(std::string line, grbl::transport *t) override {
         std::cout << "Listener: -> " << line << std::endl;
     }
+
+    void on_banner(std::string version, grbl::transport *t) override {
+        std::cout << "Banner: " << version << std::endl;
+        t->send("$$");
+    }
 };
 
 int main(int argc, char **argv) {
@@ -641,6 +648,11 @@ int main(int argc, char **argv) {
         exit(result);
     }
 
+    transport.request_realtime_report();
+    transport.request_cycle_start();
+    transport.request_feed_hold();
+    transport.parser_state_report();
+
     try {
 
 //        grbl::program pgm;
@@ -659,7 +671,7 @@ int main(int argc, char **argv) {
         }
 
         nanogui::shutdown();
-    } catch (const std::exception& e) {
+    } catch (const std::exception &e) {
         std::string error_msg = std::string("Caught a fatal error: ") + std::string(e.what());
         std::cerr << error_msg << std::endl;
         return -1;