Implemented showing program extents

grbl_machine.cpp

@@ -682,6 +682,12 @@ void grbl::machine::request_jog_fixed(grbl::jog_direction dir, float distance, f
     awaiting_responses++;
 }
 
+void grbl::machine::start_z_probe(float min_z, float feed_rate) {
+    std::string command = "G38.2 Z" + std::to_string(min_z) + "F" + std::to_string(feed_rate);
+    pipe->send(command);
+    awaiting_responses++;
+}
+
 bool grbl::jog_state::no_jogging() const {
     return !(up_pressed || down_pressed || left_pressed || right_pressed || z_up_pressed || z_down_pressed);
 }
@@ -812,6 +818,18 @@ void grbl::machine_state_idle::on_line_received(std::string line) {
         // TODO: some parameters have more than two :
         auto pieces = split_string(line, ":");
         cnc->parameters[pieces[0]] = pieces[1];
+
+        if (starts_with(line, "PRB")) {
+            auto pieces = split_string(line, ":");
+            auto coords_as_string = split_string(pieces[1], ",");
+
+            float probe_coords[3];
+            for (auto i = 0; i < 3; i++) {
+                probe_coords[i] = std::stof(coords_as_string[i]);
+            }
+            bool probe_touched = pieces[2] == "1";
+            cnc->listener->on_probe_result(probe_touched, probe_coords);
+        }
     }
 }