Add cli argument to select framebuffer device, still defaulting to /dev/fb0

inc/lvgl_port/lvgl_fb_port.h

@@ -5,6 +5,10 @@
 #include <lvgl.h>
 
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern uint32_t disp_height;
 extern uint32_t disp_width;
 
@@ -14,3 +18,7 @@ uint32_t disp_hpercent_to_px(uint32_t percent);
 uint32_t disp_vpercent_to_px(uint32_t percent);
 int lvgl_fb_run(const char* const fb_dev);
 
+#ifdef __cplusplus
+} // extern "C"
+#endif
+

src/main.c

@@ -1,9 +0,0 @@
-#include "lvgl_port/lvgl_fb_port.h"
-#include <stdio.h>
-
-
-int main()
-{
-	return lvgl_fb_run("/dev/fb0");
-}
-

src/main.cpp

@@ -0,0 +1,33 @@
+#include <argparser.h>
+
+#include "lvgl_port/lvgl_fb_port.h"
+
+
+int main(int argc, char** argv)
+{
+    using namespace Cam::Arguments;
+    
+    Parser argParser("calzone_ui");
+    argParser.set_description("LVGL frontend for Calzone");
+
+    Option fbdev("fb", "Framebuffer device e.g. /dev/fb0", STRING);
+
+    argParser.add_option(&fbdev);
+
+    ERROR argsErr = argParser.parse(argc, argv);
+    if (argsErr == SPECIAL_CASE_HELP) {
+        return 0;
+    }
+
+    if (argsErr != NO_ERROR) {
+        return -1;
+    }
+
+
+    if (fbdev.found()) {
+        return lvgl_fb_run((const char*)fbdev.data);
+    } else {
+	    return lvgl_fb_run("/dev/fb0");
+    }
+}
+