Implement tool to upgrade mcu firmware (wip)

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

examples/CMakeLists.txt

@@ -1,3 +1,5 @@
 
 add_subdirectory(debug_d3)
 add_subdirectory(debug_d4)
+
+add_subdirectory(mcu_firmware)

examples/mcu_firmware/CMakeLists.txt

@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.16)
+project(nrealAirUpgradeMCU C)
+
+set(CMAKE_C_STANDARD 17)
+
+add_executable(
+        nrealAirUpgradeMCU
+        src/upgrade.c
+)
+
+target_include_directories(nrealAirUpgradeMCU
+		BEFORE PUBLIC ${NRA_INCLUDE_DIR}
+)
+
+target_link_libraries(nrealAirUpgradeMCU
+		${NRA_LIBRARY}
+)

examples/mcu_firmware/src/upgrade.c

@@ -0,0 +1,80 @@
+//
+// Created by thejackimonster on 03.05.23.
+//
+// Copyright (c) 2023 thejackimonster. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+#include "device4.h"
+
+#include <stdio.h>
+#include <string.h>
+
+int main(int argc, const char** argv) {
+    if (argc <= 1) {
+        printf("HOW TO USE IT:\n$ nrealAirUpgradeMCU <PATH>\n");
+        return 0;
+    }
+
+    const char* path = argv[1];
+
+    printf(
+        "PLEASE BEWARE:\n\n"
+        "This tool might damage your device when using wrong files replacing\n"
+        "your firmware! Please make sure you have the right files selected and\n"
+        "you know what you are doing!\n\n"
+        "Also please DO NOT disconnect your device while updating the firmware!\n"
+        "This might also damage your device! Just wait until it has finished.\n"
+    );
+
+    const char* filename = strrchr(path, '/');
+
+    if (filename) {
+        filename++;
+    } else {
+        filename = path;
+    }
+
+    const size_t filename_len = strlen(filename);
+
+    if ((filename_len < 8) || 
+        (strncmp(filename, "air_", 4) != 0) || 
+        (strncmp(filename + filename_len - 4, ".bin", 4) != 0)) {
+        printf("\nTHE SELECTED FILE DOES NOT LOOK RIGHT!\n%s\n", filename);
+    }
+
+    printf("\nYou selected the file at: %s\n", path);
+    printf("\nDO YOU WANT TO CONTINUE? (y/n)\n");
+
+    if (getchar() != 'y') {
+        return 0;
+    }
+
+	device4_type* dev4 = device4_open(NULL);
+	
+	if (!dev4) {
+		return 1;
+	}
+	
+	device4_clear(dev4);
+	device4_update_mcu_firmware(dev4, path);
+	device4_close(dev4);
+	return 0;
+}