Guys i finally fixed almost everything (except a little framebuffer bug... )! I can only thank Relys for his code! I didn't copied it.. But it helped me a lot!
P.S. If someone could help me with that framebuffer bug i would appreciate his help...
As you can see, the inserted binary number isn't fully clear.
Also, i removed the github repo because it didn't want to sync. Now you can find all source code here:
www.github.com/AlbertoSONIC/3DS_Binary_Decimal_Converter
I think that now this is a good code. Let me know your feedback!