FirmwareUpdater: MMU 2.0 / Caterina flashing

8 files changed, 497 insertions, 110 deletions

diff --git a/xs/CMakeLists.txt b/xs/CMakeLists.txt
index 976943d64..95ff990aa 100644
--- a/xs/CMakeLists.txt
+++ b/xs/CMakeLists.txt
@@ -26,7 +26,7 @@ include_directories(${LIBDIR}/libslic3r)
 
 if(WIN32)
     # BOOST_ALL_NO_LIB: Avoid the automatic linking of Boost libraries on Windows. Rather rely on explicit linking.
-    add_definitions(-D_USE_MATH_DEFINES -D_WIN32 -DBOOST_ALL_NO_LIB)
+    add_definitions(-D_USE_MATH_DEFINES -D_WIN32 -DBOOST_ALL_NO_LIB -DBOOST_USE_WINAPI_VERSION=0x601)
     # -D_ITERATOR_DEBUG_LEVEL)
     if(WIN10SDK_PATH)
         message("Building with Win10 Netfabb STL fixing service support")
@@ -258,6 +258,8 @@ add_library(libslic3r_gui STATIC
     ${LIBDIR}/slic3r/Utils/PresetUpdater.hpp
     ${LIBDIR}/slic3r/Utils/Time.cpp
     ${LIBDIR}/slic3r/Utils/Time.hpp
+    ${LIBDIR}/slic3r/Utils/HexFile.cpp
+    ${LIBDIR}/slic3r/Utils/HexFile.hpp
     ${LIBDIR}/slic3r/IProgressIndicator.hpp
     ${LIBDIR}/slic3r/AppController.hpp
     ${LIBDIR}/slic3r/AppController.cpp
diff --git a/xs/src/avrdude/avrdude-slic3r.cpp b/xs/src/avrdude/avrdude-slic3r.cpp
index 030353413..4a7f22d6e 100644
--- a/xs/src/avrdude/avrdude-slic3r.cpp
+++ b/xs/src/avrdude/avrdude-slic3r.cpp
@@ -36,6 +36,7 @@ struct AvrDude::priv
 	std::string sys_config;
 	std::deque<std::vector<std::string>> args;
 	size_t current_args_set = 0;
+	bool cancelled = false;
 	RunFn run_fn;
 	MessageFn message_fn;
 	ProgressFn progress_fn;
@@ -141,11 +142,16 @@ AvrDude::Ptr AvrDude::run()
 
 	if (self->p) {
 		auto avrdude_thread = std::thread([self]() {
+			bool cancel = false;
+			int res = -1;
+
 			if (self->p->run_fn) {
-				self->p->run_fn();
+				self->p->run_fn(*self);
 			}
 
-			auto res = self->p->run();
+			if (! self->p->cancelled) {
+				res = self->p->run();
+			}
 
 			if (self->p->complete_fn) {
 				self->p->complete_fn(res, self->p->current_args_set);
@@ -160,7 +166,10 @@ AvrDude::Ptr AvrDude::run()
 
 void AvrDude::cancel()
 {
-	::avrdude_cancel();
+	if (p) {
+		p->cancelled = true;
+		::avrdude_cancel();
+	}
 }
 
 void AvrDude::join()
diff --git a/xs/src/avrdude/avrdude-slic3r.hpp b/xs/src/avrdude/avrdude-slic3r.hpp
index 273aa2378..399df2358 100644
--- a/xs/src/avrdude/avrdude-slic3r.hpp
+++ b/xs/src/avrdude/avrdude-slic3r.hpp
@@ -12,7 +12,7 @@ class AvrDude
 {
 public:
 	typedef std::shared_ptr<AvrDude> Ptr;
-	typedef std::function<void()> RunFn;
+	typedef std::function<void(AvrDude&)> RunFn;
 	typedef std::function<void(const char * /* msg */, unsigned /* size */)> MessageFn;
 	typedef std::function<void(const char * /* task */, unsigned /* progress */)> ProgressFn;
 	typedef std::function<void(int /* exit status */, size_t /* args_id */)> CompleteFn;
@@ -31,7 +31,8 @@ public:
 	AvrDude& push_args(std::vector<std::string> args);
 
 	// Set a callback to be called just after run() before avrdude is ran
-	// This can be used to perform any needed setup tasks from the background thread.
+	// This can be used to perform any needed setup tasks from the background thread,
+	// and, optionally, to cancel by writing true to the `cancel` argument.
 	// This has no effect when using run_sync().
 	AvrDude& on_run(RunFn fn);
 
diff --git a/xs/src/slic3r/GUI/FirmwareDialog.cpp b/xs/src/slic3r/GUI/FirmwareDialog.cpp
index 17ff42245..38c2937fc 100644
--- a/xs/src/slic3r/GUI/FirmwareDialog.cpp
+++ b/xs/src/slic3r/GUI/FirmwareDialog.cpp
@@ -1,12 +1,23 @@
-#include "FirmwareDialog.hpp"
-
 #include <numeric>
 #include <algorithm>
+#include <thread>
+#include <stdexcept>
 #include <boost/format.hpp>
+#include <boost/asio.hpp>
 #include <boost/filesystem/path.hpp>
 #include <boost/filesystem/fstream.hpp>
 #include <boost/log/trivial.hpp>
 
+#include "libslic3r/Utils.hpp"
+#include "avrdude/avrdude-slic3r.hpp"
+#include "GUI.hpp"
+#include "MsgDialog.hpp"
+#include "../Utils/HexFile.hpp"
+#include "../Utils/Serial.hpp"
+
+// wx includes need to come after asio because of the WinSock.h problem
+#include "FirmwareDialog.hpp"
+
 #include <wx/app.h>
 #include <wx/event.h>
 #include <wx/sizer.h>
@@ -22,16 +33,18 @@
 #include <wx/collpane.h>
 #include <wx/msgdlg.h>
 
-#include "libslic3r/Utils.hpp"
-#include "avrdude/avrdude-slic3r.hpp"
-#include "GUI.hpp"
-#include "../Utils/Serial.hpp"
 
 namespace fs = boost::filesystem;
+namespace asio = boost::asio;
+using boost::system::error_code;
 
 
 namespace Slic3r {
 
+using Utils::HexFile;
+using Utils::SerialPortInfo;
+using Utils::Serial;
+
 
 // This enum discriminates the kind of information in EVT_AVRDUDE,
 // it's stored in the ExtraLong field of wxCommandEvent.
@@ -40,6 +53,7 @@ enum AvrdudeEvent
 	AE_MESSAGE,
 	AE_PROGRESS,
 	AE_EXIT,
+	AE_ERROR,
 };
 
 wxDECLARE_EVENT(EVT_AVRDUDE, wxCommandEvent);
@@ -52,7 +66,6 @@ struct FirmwareDialog::priv
 {
 	enum AvrDudeComplete
 	{
-		AC_NONE,
 		AC_SUCCESS,
 		AC_FAILURE,
 		AC_CANCEL,
@@ -61,7 +74,7 @@ struct FirmwareDialog::priv
 	FirmwareDialog *q;      // PIMPL back pointer ("Q-Pointer")
 
 	wxComboBox *port_picker;
-	std::vector<Utils::SerialPortInfo> ports;
+	std::vector<SerialPortInfo> ports;
 	wxFilePickerCtrl *hex_picker;
 	wxStaticText *txt_status;
 	wxGauge *progressbar;
@@ -80,7 +93,9 @@ struct FirmwareDialog::priv
 	AvrDude::Ptr avrdude;
 	std::string avrdude_config;
 	unsigned progress_tasks_done;
+	unsigned progress_tasks_bar;
 	bool cancelled;
+	const bool extra_verbose;   // For debugging
 
 	priv(FirmwareDialog *q) :
 		q(q),
@@ -89,16 +104,25 @@ struct FirmwareDialog::priv
 		timer_pulse(q),
 		avrdude_config((fs::path(::Slic3r::resources_dir()) / "avrdude" / "avrdude.conf").string()),
 		progress_tasks_done(0),
-		cancelled(false)
+		progress_tasks_bar(0),
+		cancelled(false),
+		extra_verbose(false)
 	{}
 
 	void find_serial_ports();
-	void flashing_start(bool flashing_l10n);
+	void flashing_start(unsigned tasks);
 	void flashing_done(AvrDudeComplete complete);
-	size_t hex_num_sections(const wxString &path);
+	void check_model_id(const HexFile &metadata, const SerialPortInfo &port);
+
+	void prepare_common(AvrDude &, const SerialPortInfo &port);
+	void prepare_mk2(AvrDude &, const SerialPortInfo &port);
+	void prepare_mk3(AvrDude &, const SerialPortInfo &port);
+	void prepare_mm_control(AvrDude &, const SerialPortInfo &port);
 	void perform_upload();
+
 	void cancel();
 	void on_avrdude(const wxCommandEvent &evt);
+	void ensure_joined();
 };
 
 void FirmwareDialog::priv::find_serial_ports()
@@ -122,7 +146,7 @@ void FirmwareDialog::priv::find_serial_ports()
 	}
 }
 
-void FirmwareDialog::priv::flashing_start(bool flashing_l10n)
+void FirmwareDialog::priv::flashing_start(unsigned tasks)
 {
 	txt_stdout->Clear();
 	txt_status->SetLabel(_(L("Flashing in progress. Please do not disconnect the printer!")));
@@ -132,9 +156,10 @@ void FirmwareDialog::priv::flashing_start(bool flashing_l10n)
 	hex_picker->Disable();
 	btn_close->Disable();
 	btn_flash->SetLabel(btn_flash_label_flashing);
-	progressbar->SetRange(flashing_l10n ? 500 : 200);   // See progress callback below
+	progressbar->SetRange(200 * tasks);   // See progress callback below
 	progressbar->SetValue(0);
 	progress_tasks_done = 0;
+	progress_tasks_bar = 0;
 	cancelled = false;
 	timer_pulse.Start(50);
 }
@@ -158,56 +183,51 @@ void FirmwareDialog::priv::flashing_done(AvrDudeComplete complete)
 	}
 }
 
-size_t FirmwareDialog::priv::hex_num_sections(const wxString &path)
+void FirmwareDialog::priv::check_model_id(const HexFile &metadata, const SerialPortInfo &port)
 {
-	fs::ifstream file(fs::path(path.wx_str()));
-	if (! file.good()) {
-		return 0;
+	if (metadata.model_id.empty()) {
+		// No data to check against
+		return;
+	}
+
+	asio::io_service io;
+	Serial serial(io, port.port, 115200);
+	serial.printer_setup();
+
+	enum {
+		TIMEOUT = 1000,
+		RETREIES = 3,
+	};
+
+	if (! serial.printer_ready_wait(RETREIES, TIMEOUT)) {
+		throw wxString::Format(_(L("Could not connect to the printer at %s")), port.port);
 	}
 
-	static const char *hex_terminator = ":00000001FF\r";
-	size_t res = 0;
 	std::string line;
-	while (getline(file, line, '\n').good()) {
-		// Account for LF vs CRLF
-		if (!line.empty() && line.back() != '\r') {
-			line.push_back('\r');
+	error_code ec;
+	serial.printer_write_line("PRUSA Rev");
+	while (serial.read_line(TIMEOUT, line, ec)) {
+		if (ec) { throw wxString::Format(_(L("Could not connect to the printer at %s")), port.port); }
+		if (line == "ok") { continue; }
+
+		if (line == metadata.model_id) {
+			return;
+		} else {
+			throw wxString::Format(_(L(
+				"The firmware hex file does not match the printer model.\n"
+				"The hex file is intended for:\n  %s\n"
+				"Printer reports:\n  %s"
+			)), metadata.model_id, line);
 		}
 
-		if (line == hex_terminator) {
-			res++;
-		}
+		line.clear();
 	}
-
-	return res;
 }
 
-void FirmwareDialog::priv::perform_upload()
+void FirmwareDialog::priv::prepare_common(AvrDude &avrdude, const SerialPortInfo &port)
 {
 	auto filename = hex_picker->GetPath();
-	std::string port = port_picker->GetValue().ToStdString();
-	int  selection = port_picker->GetSelection();
-	if (selection != -1) {
-		// Verify whether the combo box list selection equals to the combo box edit value.
-		if (this->ports[selection].friendly_name == port)
-			port = this->ports[selection].port;
-	}
-	if (filename.IsEmpty() || port.empty()) { return; }
-
-	const bool extra_verbose = false;   // For debugging
-	const auto num_secions = hex_num_sections(filename);
-	const auto filename_utf8 = filename.utf8_str();
 
-	flashing_start(num_secions > 1);
-
-	// It is ok here to use the q-pointer to the FirmwareDialog
-	// because the dialog ensures it doesn't exit before the background thread is done.
-	auto q = this->q;
-
-	// Init the avrdude object
-	AvrDude avrdude(avrdude_config);
-
-	// Build argument list(s)
 	std::vector<std::string> args {{
 		extra_verbose ? "-vvvvv" : "-v",
 		"-p", "atmega2560",
@@ -215,11 +235,10 @@ void FirmwareDialog::priv::perform_upload()
 		// The Prusa's avrdude is patched to never send semicolons inside the data packets, as the USB to serial chip
 		// is flashed with a buggy firmware.
 		"-c", "wiring",
-		"-P", port,
+		"-P", port.port,
 		"-b", "115200",   // TODO: Allow other rates? Ditto below.
 		"-D",
-		// XXX: Safe mode?
-		"-U", (boost::format("flash:w:0:%1%:i") % filename_utf8.data()).str(),
+		"-U", (boost::format("flash:w:0:%1%:i") % filename.utf8_str().data()).str(),
 	}};
 
 	BOOST_LOG_TRIVIAL(info) << "Invoking avrdude, arguments: "
@@ -228,32 +247,172 @@ void FirmwareDialog::priv::perform_upload()
 		});
 
 	avrdude.push_args(std::move(args));
-	
-	if (num_secions > 1) {
-		// The hex file also contains another section with l10n data to be flashed into the external flash on MK3 (Einsy)
-		// This is done via another avrdude invocation, here we build arg list for that:
-		std::vector<std::string> args_l10n {{
-			extra_verbose ? "-vvvvv" : "-v",
-			"-p", "atmega2560",
-			// Using the "Arduino" mode to program Einsy's external flash with languages, using the STK500 protocol (not the STK500v2).
-			// The Prusa's avrdude is patched again to never send semicolons inside the data packets.
-			"-c", "arduino",
-			"-P", port,
-			"-b", "115200",
-			"-D",
-			"-u", // disable safe mode
-			"-U", (boost::format("flash:w:1:%1%:i") % filename_utf8.data()).str(),
-		}};
-
-		BOOST_LOG_TRIVIAL(info) << "Invoking avrdude for external flash flashing, arguments: "
-			<< std::accumulate(std::next(args_l10n.begin()), args_l10n.end(), args_l10n[0], [](std::string a, const std::string &b) {
-				return a + ' ' + b;
-			});
-
-		avrdude.push_args(std::move(args_l10n));
+}
+
+void FirmwareDialog::priv::prepare_mk2(AvrDude &avrdude, const SerialPortInfo &port)
+{
+	flashing_start(1);
+	prepare_common(avrdude, port);
+}
+
+void FirmwareDialog::priv::prepare_mk3(AvrDude &avrdude, const SerialPortInfo &port)
+{
+	flashing_start(2);
+	prepare_common(avrdude, port);
+
+	auto filename = hex_picker->GetPath();
+
+	// The hex file also contains another section with l10n data to be flashed into the external flash on MK3 (Einsy)
+	// This is done via another avrdude invocation, here we build arg list for that:
+	std::vector<std::string> args_l10n {{
+		extra_verbose ? "-vvvvv" : "-v",
+		"-p", "atmega2560",
+		// Using the "Arduino" mode to program Einsy's external flash with languages, using the STK500 protocol (not the STK500v2).
+		// The Prusa's avrdude is patched again to never send semicolons inside the data packets.
+		"-c", "arduino",
+		"-P", port.port,
+		"-b", "115200",
+		"-D",
+		"-u", // disable safe mode
+		"-U", (boost::format("flash:w:1:%1%:i") % filename.utf8_str().data()).str(),
+	}};
+
+	BOOST_LOG_TRIVIAL(info) << "Invoking avrdude for external flash flashing, arguments: "
+		<< std::accumulate(std::next(args_l10n.begin()), args_l10n.end(), args_l10n[0], [](std::string a, const std::string &b) {
+			return a + ' ' + b;
+		});
+
+	avrdude.push_args(std::move(args_l10n));
+}
+
+void FirmwareDialog::priv::prepare_mm_control(AvrDude &avrdude, const SerialPortInfo &port_in)
+{
+	// Check if the port has the PID/VID of 0x2c99/3
+	// If not, check if it is the MMU (0x2c99/4) and reboot the by opening @ 1200 bauds
+	BOOST_LOG_TRIVIAL(info) << "Flashing MMU 2.0, looking for VID/PID 0x2c99/3 or 0x2c99/4 ...";
+	SerialPortInfo port = port_in;
+	if (! port.id_match(0x2c99, 3)) {
+		if (! port.id_match(0x2c99, 4)) {
+			// This is not a Prusa MMU 2.0 device
+			BOOST_LOG_TRIVIAL(error) << boost::format("Not a Prusa MMU 2.0 device: `%1%`") % port.port;
+			throw wxString::Format(_(L("The device at `%s` is not am Original Prusa i3 MMU 2.0 device")), port.port);
+		}
+
+		BOOST_LOG_TRIVIAL(info) << boost::format("Found VID/PID 0x2c99/4 at `%1%`, rebooting the device ...") % port.port;
+
+		{
+			asio::io_service io;
+			Serial serial(io, port.port, 1200);
+			std::this_thread::sleep_for(std::chrono::milliseconds(50));
+		}
+
+		// Wait for the bootloader to show up
+		std::this_thread::sleep_for(std::chrono::milliseconds(2000));
+
+		// Look for the rebooted device
+		BOOST_LOG_TRIVIAL(info) << "... looking for VID/PID 0x2c99/3 ...";
+		auto new_ports = Utils::scan_serial_ports_extended();
+		unsigned hits = 0;
+		for (auto &&new_port : new_ports) {
+			if (new_port.id_match(0x2c99, 3)) {
+				hits++;
+				port = std::move(new_port);
+			}
+		}
+
+		if (hits == 0) {
+			BOOST_LOG_TRIVIAL(error) << "No VID/PID 0x2c99/3 device found after rebooting the MMU 2.0";
+			throw wxString::Format(_(L("Failed to reboot the device at `%s` for programming")), port.port);
+		} else if (hits > 1) {
+			// We found multiple 0x2c99/3 devices, this is bad, because there's no way to find out
+			// which one is the one user wants to flash.
+			BOOST_LOG_TRIVIAL(error) << "Several VID/PID 0x2c99/3 devices found after rebooting the MMU 2.0";
+			throw wxString::Format(_(L("Multiple Original Prusa i3 MMU 2.0 devices found. Please only connect one at a time for flashing.")), port.port);
+		}
 	}
-	
+
+	BOOST_LOG_TRIVIAL(info) << boost::format("Found VID/PID 0x2c99/3 at `%1%`, flashing ...") % port.port;
+
+	auto filename = hex_picker->GetPath();
+
+	std::vector<std::string> args {{
+		extra_verbose ? "-vvvvv" : "-v",
+		"-p", "atmega32u4",
+		"-c", "avr109",
+		"-P", port.port,
+		"-b", "57600",
+		"-D",
+		"-U", (boost::format("flash:w:0:%1%:i") % filename.utf8_str().data()).str(),
+	}};
+
+	BOOST_LOG_TRIVIAL(info) << "Invoking avrdude, arguments: "
+		<< std::accumulate(std::next(args.begin()), args.end(), args[0], [](std::string a, const std::string &b) {
+			return a + ' ' + b;
+		});
+
+	avrdude.push_args(std::move(args));
+}
+
+
+void FirmwareDialog::priv::perform_upload()
+{
+	auto filename = hex_picker->GetPath();
+	if (filename.IsEmpty()) { return; }
+
+	int selection = port_picker->GetSelection();
+	if (selection == wxNOT_FOUND) { return; }
+
+	std::string port_selected = port_picker->GetValue().ToStdString();
+	const SerialPortInfo &port = this->ports[selection];
+	// Verify whether the combo box list selection equals to the combo box edit value.
+	if (this->ports[selection].friendly_name != port_selected) { return; }
+
+	const bool extra_verbose = false;   // For debugging
+	HexFile metadata(filename.wx_str());
+	// const auto filename_utf8 = filename.utf8_str();
+
+	flashing_start(metadata.device == HexFile::DEV_MK3 ? 2 : 1);
+
+	// Init the avrdude object
+	AvrDude avrdude(avrdude_config);
+
+	// It is ok here to use the q-pointer to the FirmwareDialog
+	// because the dialog ensures it doesn't exit before the background thread is done.
+	auto q = this->q;
+
 	this->avrdude = avrdude
+		.on_run([this, metadata, port](AvrDude &avrdude) {
+			auto queue_error = [&](wxString message) {
+				avrdude.cancel();
+
+				auto evt = new wxCommandEvent(EVT_AVRDUDE, this->q->GetId());
+				evt->SetExtraLong(AE_ERROR);
+				evt->SetString(std::move(message));
+				wxQueueEvent(this->q, evt);
+			};
+
+			try {
+				switch (metadata.device) {
+				case HexFile::DEV_MK3:
+					this->check_model_id(metadata, port);
+					this->prepare_mk3(avrdude, port);
+					break;
+
+				case HexFile::DEV_MM_CONTROL:
+					this->check_model_id(metadata, port);
+					this->prepare_mm_control(avrdude, port);
+					break;
+
+				default:
+					this->prepare_mk2(avrdude, port);
+					break;
+				}
+			} catch (const wxString &message) {
+				queue_error(message);
+			} catch (const std::exception &ex) {
+				queue_error(wxString::Format(_(L("Error accessing port at %s: %s")), port.port, ex.what()));
+			}
+		})
 		.on_message(std::move([q, extra_verbose](const char *msg, unsigned /* size */) {
 			if (extra_verbose) {
 				BOOST_LOG_TRIVIAL(debug) << "avrdude: " << msg;
@@ -306,12 +465,15 @@ void FirmwareDialog::priv::on_avrdude(const wxCommandEvent &evt)
 		// and then display overall progress during the latter tasks.
 
 		if (progress_tasks_done > 0) {
-			progressbar->SetValue(progress_tasks_done - 100 + evt.GetInt());
+			progressbar->SetValue(progress_tasks_bar + evt.GetInt());
 		}
 
 		if (evt.GetInt() == 100) {
 			timer_pulse.Stop();
-			progress_tasks_done += 100;
+			if (progress_tasks_done % 3 != 0) {
+				progress_tasks_bar += 100;
+			}
+			progress_tasks_done++;
 		}
 
 		break;
@@ -321,11 +483,17 @@ void FirmwareDialog::priv::on_avrdude(const wxCommandEvent &evt)
 
 		complete_kind = cancelled ? AC_CANCEL : (evt.GetInt() == 0 ? AC_SUCCESS : AC_FAILURE);
 		flashing_done(complete_kind);
+		ensure_joined();
+		break;
 
-		// Make sure the background thread is collected and the AvrDude object reset
-		if (avrdude) { avrdude->join(); }
-		avrdude.reset();
-
+	case AE_ERROR:
+		txt_stdout->AppendText(evt.GetString());
+		flashing_done(AC_FAILURE);
+		ensure_joined();
+		{
+			GUI::ErrorDialog dlg(this->q, evt.GetString());
+			dlg.ShowModal();
+		}
 		break;
 
 	default:
@@ -333,6 +501,13 @@ void FirmwareDialog::priv::on_avrdude(const wxCommandEvent &evt)
 	}
 }
 
+void FirmwareDialog::priv::ensure_joined()
+{
+	// Make sure the background thread is collected and the AvrDude object reset
+	if (avrdude) { avrdude->join(); }
+	avrdude.reset();
+}
+
 
 // Public
 
diff --git a/xs/src/slic3r/Utils/HexFile.cpp b/xs/src/slic3r/Utils/HexFile.cpp
new file mode 100644
index 000000000..ed26ddf37
--- /dev/null
+++ b/xs/src/slic3r/Utils/HexFile.cpp
@@ -0,0 +1,107 @@
+#include "HexFile.hpp"
+
+#include <sstream>
+#include <boost/filesystem/fstream.hpp>
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/ini_parser.hpp>
+
+namespace fs = boost::filesystem;
+namespace pt = boost::property_tree;
+
+
+namespace Slic3r {
+namespace Utils {
+
+
+static HexFile::DeviceKind parse_device_kind(const std::string &str)
+{
+	     if (str == "mk2") { return HexFile::DEV_MK2; }
+	else if (str == "mk3") { return HexFile::DEV_MK3; }
+	else if (str == "mm-control") { return HexFile::DEV_MM_CONTROL; }
+	else { return HexFile::DEV_GENERIC; }
+}
+
+static size_t hex_num_sections(fs::ifstream &file)
+{
+	file.seekg(0);
+	if (! file.good()) {
+		return 0;
+	}
+
+	static const char *hex_terminator = ":00000001FF\r";
+	size_t res = 0;
+	std::string line;
+	while (getline(file, line, '\n').good()) {
+		// Account for LF vs CRLF
+		if (!line.empty() && line.back() != '\r') {
+			line.push_back('\r');
+		}
+
+		if (line == hex_terminator) {
+			res++;
+		}
+	}
+
+	return res;
+}
+
+HexFile::HexFile(fs::path path) :
+	path(std::move(path)),
+	device(DEV_GENERIC)
+{
+	fs::ifstream file(this->path);
+	if (! file.good()) {
+		return;
+	}
+
+	std::string line;
+	std::stringstream header_ini;
+	while (std::getline(file, line, '\n').good()) {
+		if (line.empty()) {
+			continue;
+		}
+
+		// Account for LF vs CRLF
+		if (!line.empty() && line.back() == '\r') {
+			line.pop_back();
+		}
+
+		if (line.front() == ';') {
+			line.front() = ' ';
+			header_ini << line << std::endl;
+		} else if (line.front() == ':') {
+			break;
+		}
+	}
+
+	pt::ptree ptree;
+	try {
+		pt::read_ini(header_ini, ptree);
+	} catch (std::exception &e) {
+		return;
+	}
+
+	bool has_device_meta = false;
+	const auto device = ptree.find("device");
+	if (device != ptree.not_found()) {
+		this->device = parse_device_kind(device->second.data());
+		has_device_meta = true;
+	}
+
+	const auto model_id = ptree.find("model_id");
+	if (model_id != ptree.not_found()) {
+		this->model_id = model_id->second.data();
+	}
+
+	if (! has_device_meta) {
+		// No device metadata, look at the number of 'sections'
+		if (hex_num_sections(file) == 2) {
+			// Looks like a pre-metadata l10n firmware for the MK3, assume that's the case
+			this->device = DEV_MK3;
+		}
+	}
+}
+
+
+}
+}
diff --git a/xs/src/slic3r/Utils/HexFile.hpp b/xs/src/slic3r/Utils/HexFile.hpp
new file mode 100644
index 000000000..d8d1e09ab
--- /dev/null
+++ b/xs/src/slic3r/Utils/HexFile.hpp
@@ -0,0 +1,32 @@
+#ifndef slic3r_Hex_hpp_
+#define slic3r_Hex_hpp_
+
+#include <string>
+#include <boost/filesystem/path.hpp>
+
+
+namespace Slic3r {
+namespace Utils {
+
+
+struct HexFile
+{
+	enum DeviceKind {
+		DEV_GENERIC,
+		DEV_MK2,
+		DEV_MK3,
+		DEV_MM_CONTROL,
+	};
+
+	boost::filesystem::path path;
+	DeviceKind device;
+	std::string model_id;
+
+	HexFile(boost::filesystem::path path);
+};
+
+
+}
+}
+
+#endif
diff --git a/xs/src/slic3r/Utils/Serial.cpp b/xs/src/slic3r/Utils/Serial.cpp
index 8a454b119..c3c16b314 100644
--- a/xs/src/slic3r/Utils/Serial.cpp
+++ b/xs/src/slic3r/Utils/Serial.cpp
@@ -11,12 +11,14 @@
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/format.hpp>
+#include <boost/optional.hpp>
 
 #if _WIN32
 	#include <Windows.h>
 	#include <Setupapi.h>
 	#include <initguid.h>
 	#include <devguid.h>
+	#include <regex>
 	// Undefine min/max macros incompatible with the standard library
 	// For example, std::numeric_limits<std::streamsize>::max()
 	// produces some weird errors
@@ -51,6 +53,8 @@
 	#include <asm-generic/ioctls.h>
 #endif
 
+using boost::optional;
+
 
 namespace Slic3r {
 namespace Utils {
@@ -60,15 +64,43 @@ static bool looks_like_printer(const std::string &friendly_name)
 	return friendly_name.find("Original Prusa") != std::string::npos;
 }
 
+#if _WIN32
+void parse_hardware_id(const std::string &hardware_id, SerialPortInfo &spi)
+{
+	unsigned vid, pid;
+	std::regex pattern("USB\\\\.*VID_([[:xdigit:]]+)&PID_([[:xdigit:]]+).*");
+	std::smatch matches;
+	if (std::regex_match(hardware_id, matches, pattern)) {
+		try {
+			vid = std::stoul(matches[1].str(), 0, 16);
+			pid = std::stoul(matches[2].str(), 0, 16);
+			spi.id_vendor = vid;
+			spi.id_product = pid;
+		}
+		catch (...) {}
+	}
+}
+#endif
+
 #ifdef __linux__
-static std::string get_tty_friendly_name(const std::string &path, const std::string &name)
+optional<std::string> sysfs_tty_prop(const std::string &tty_dev, const std::string &name)
+{
+	const auto prop_path = (boost::format("/sys/class/tty/%1%/device/../%2%") % tty_dev % name).str();
+	std::ifstream file(prop_path);
+	std::string res;
+
+	std::getline(file, res);
+	if (file.good()) { return res; }
+	else { return boost::none; }
+}
+
+optional<unsigned long> sysfs_tty_prop_hex(const std::string &tty_dev, const std::string &name)
 {
-	const auto sysfs_product = (boost::format("/sys/class/tty/%1%/device/../product") % name).str();
-	std::ifstream file(sysfs_product);
-	std::string product;
+	auto prop = sysfs_tty_prop(tty_dev, name);
+	if (!prop) { return boost::none; }
 
-	std::getline(file, product);
-	return file.good() ? (boost::format("%1% (%2%)") % product % path).str() : path;
+	try { return std::stoul(*prop, 0, 16); }
+	catch (...) { return boost::none; }
 }
 #endif
 
@@ -98,6 +130,7 @@ std::vector<SerialPortInfo> scan_serial_ports_extended()
 				if (port_info.port.empty())
 					continue;
 			}
+
 			// Find the size required to hold the device info.
 			DWORD regDataType;
 			DWORD reqSize = 0;
@@ -106,7 +139,8 @@ std::vector<SerialPortInfo> scan_serial_ports_extended()
 			// Now store it in a buffer.
 			if (! SetupDiGetDeviceRegistryProperty(hDeviceInfo, &devInfoData, SPDRP_HARDWAREID, &regDataType, (BYTE*)hardware_id.data(), reqSize, nullptr))
 				continue;
-			port_info.hardware_id = boost::nowide::narrow(hardware_id.data());
+			parse_hardware_id(boost::nowide::narrow(hardware_id.data()), port_info);
+
 			// Find the size required to hold the friendly name.
 			reqSize = 0;
 			SetupDiGetDeviceRegistryProperty(hDeviceInfo, &devInfoData, SPDRP_FRIENDLYNAME, nullptr, nullptr, 0, &reqSize);
@@ -138,6 +172,8 @@ std::vector<SerialPortInfo> scan_serial_ports_extended()
 					if (result) {
 						SerialPortInfo port_info;
 						port_info.port = path;
+
+						// Attempt to read out the device friendly name
 						if ((cf_property = IORegistryEntrySearchCFProperty(port, kIOServicePlane,
 						         CFSTR("USB Interface Name"), kCFAllocatorDefault,
 						         kIORegistryIterateRecursively | kIORegistryIterateParents)) ||
@@ -159,6 +195,23 @@ std::vector<SerialPortInfo> scan_serial_ports_extended()
 						}
 						if (port_info.friendly_name.empty())
 							port_info.friendly_name = port_info.port;
+
+						// Attempt to read out the VID & PID
+						int vid, pid;
+						auto cf_vendor = IORegistryEntrySearchCFProperty(port, kIOServicePlane, CFSTR("idVendor"),
+							kCFAllocatorDefault, kIORegistryIterateRecursively | kIORegistryIterateParents);
+						auto cf_product = IORegistryEntrySearchCFProperty(port, kIOServicePlane, CFSTR("idProduct"),
+							kCFAllocatorDefault, kIORegistryIterateRecursively | kIORegistryIterateParents);
+						if (cf_vendor && cf_product) {
+							if (CFNumberGetValue((CFNumberRef)cf_vendor, kCFNumberIntType, &vid) &&
+								CFNumberGetValue((CFNumberRef)cf_product, kCFNumberIntType, &pid)) {
+								port_info.id_vendor = vid;
+								port_info.id_product = pid;
+							}
+						}
+						if (cf_vendor) { CFRelease(cf_vendor); }
+						if (cf_product) { CFRelease(cf_product); }
+
 						output.emplace_back(std::move(port_info));
 					}
 				}
@@ -176,9 +229,15 @@ std::vector<SerialPortInfo> scan_serial_ports_extended()
                 const auto path = dir_entry.path().string();
                 SerialPortInfo spi;
                 spi.port = path;
-                spi.hardware_id = path;
 #ifdef __linux__
-                spi.friendly_name = get_tty_friendly_name(path, name);
+				auto friendly_name = sysfs_tty_prop(name, "product");
+				spi.friendly_name = friendly_name ? (boost::format("%1% (%2%)") % *friendly_name % path).str() : path;
+				auto vid = sysfs_tty_prop_hex(name, "idVendor");
+				auto pid = sysfs_tty_prop_hex(name, "idProduct");
+				if (vid && pid) {
+					spi.id_vendor = *vid;
+					spi.id_product = *pid;
+				}
 #else
                 spi.friendly_name = path;
 #endif
@@ -221,7 +280,7 @@ Serial::Serial(asio::io_service& io_service) :
 Serial::Serial(asio::io_service& io_service, const std::string &name, unsigned baud_rate) :
 	asio::serial_port(io_service, name)
 {
-	printer_setup(baud_rate);
+	set_baud_rate(baud_rate);
 }
 
 Serial::~Serial() {}
@@ -359,9 +418,8 @@ bool Serial::read_line(unsigned timeout, std::string &line, error_code &ec)
 	}
 }
 
-void Serial::printer_setup(unsigned baud_rate)
+void Serial::printer_setup()
 {
-	set_baud_rate(baud_rate);
 	printer_reset();
 	write_string("\r\r\r\r\r\r\r\r\r\r");    // Gets rid of line noise, if any
 }
diff --git a/xs/src/slic3r/Utils/Serial.hpp b/xs/src/slic3r/Utils/Serial.hpp
index 5df33916f..d15f249c0 100644
--- a/xs/src/slic3r/Utils/Serial.hpp
+++ b/xs/src/slic3r/Utils/Serial.hpp
@@ -12,16 +12,21 @@ namespace Utils {
 
 struct SerialPortInfo {
 	std::string port;
-	std::string hardware_id;
+	unsigned    id_vendor = -1;
+	unsigned    id_product = -1;
 	std::string friendly_name;
-	bool 		is_printer = false;
+	bool        is_printer = false;
+
+	bool id_match(unsigned id_vendor, unsigned id_product) const { return id_vendor == this->id_vendor && id_product == this->id_product; }
 };
 
 inline bool operator==(const SerialPortInfo &sp1, const SerialPortInfo &sp2)
 {
-	return sp1.port 	   == sp2.port 	      &&
-		   sp1.hardware_id == sp2.hardware_id &&
-		   sp1.is_printer  == sp2.is_printer;
+	return
+		sp1.port       == sp2.port       &&
+		sp1.id_vendor  == sp2.id_vendor  &&
+		sp1.id_product == sp2.id_product &&
+		sp1.is_printer == sp2.is_printer;
 }
 
 extern std::vector<std::string> 	scan_serial_ports();
@@ -32,7 +37,6 @@ class Serial : public boost::asio::serial_port
 {
 public:
 	Serial(boost::asio::io_service &io_service);
-	// This c-tor opens the port for communication with a printer - it sets a baud rate and calls printer_reset()
 	Serial(boost::asio::io_service &io_service, const std::string &name, unsigned baud_rate);
 	Serial(const Serial &) = delete;
 	Serial &operator=(const Serial &) = delete;
@@ -48,8 +52,7 @@ public:
 	bool read_line(unsigned timeout, std::string &line, boost::system::error_code &ec);
 
 	// Perform setup for communicating with a printer
-	// Sets a baud rate and calls printer_reset()
-	void printer_setup(unsigned baud_rate);
+	void printer_setup();
 
 	// Write data from a string
 	size_t write_string(const std::string &str);