thomas-northway

Hi everyone, I'm hoping someone in this community might be able to help with this question. I'm in the process of building a 3D printer based on the design of my Ultimaker Original. I have the hardware completed and I have finished the PCB layout. This circuit is just a mildly modified version of the UM white PCB. There are 2 microcontrollers the ATmega 2560 and ATmega 16U. The 2560 is the main controller which uses the marlin code but I'm assuming the 16U is just acting as USB interface. If this is true there must be some firmware for this device but I don't see any mention of it online anywhere. Any help is greatly appreciated. Thanks

Hi Everyone, I am building my own 3d printer based on the design of my ultimaker original. The hardware is mostly finished and I am now in the process of finishing up the electronics. I have borrowed heavily from the UM v2.1.1 schematic but have made some additions of my own which means I need to modify the firmware to make it all work. I'm not new to this by any means. I've been writing code for 8051 variants for quite a while now using uVision 51 which still works great for these processors. I downloaded the Arduino IDE and the marlin firmware and now I'm completely stumped. I can't find any mention of the processor include file anywhere in the code (unless I'm just missing it). I see ports being called by name but there has to be a file somewhere which tells the compiler what the address is for that port. Here is an example of what I am used to working with: P1 Bit Registers sbit P1_0 = 0x90; sbit P1_1 = 0x91; sbit P1_2 = 0x92; sbit P1_3 = 0x93; sbit P1_4 = 0x94; sbit P1_5 = 0x95; sbit P1_6 = 0x96; sbit P1_7 = 0x97; Any help would be greatly appreciated. Thanks.