DMComm

Arduino program and library to communicate with Digimon toys, by BladeSabre ( bladethecoder@gmail.com ). License: MIT.

To install, check your board type below, and pick one from A-Com Flasher / Alpha Upload / "Install from Source".

Currently supports

• A-Com and D-Com (portable)
• P-Com (on RP2040)
• The 3 classic prong styles with all calculation features
• Digimon Color without calculation
• LED feedback
• Voltage test (t)
• Version info (i)

Board Types

• Almost any premade A-Com will be a Nano. Some have the "old bootloader" which requires a different flashing option.
• Bazjo D-Com v2 (bought since Dec 2023) works as a Nano.
• Bazjo D-Com v1 uses ATmega328PB and requires special flashing options.

Installation Tools

ACom Flasher

• OS support: Android
• Board support: Uno, Nano, Bazjo D-Com v1

Alpha Upload

• OS support: Windows (from the above link); Mac (unofficially, check the 0NL1NE server)
• Board support: Uno, Nano, Leonardo
• Make sure to choose "DMComm Arduino" before flashing!

Install from Source

Hardware setup

• Find the Arduino15 folder
• ATmega32U4:
  • Increasing the serial buffer is not required
• Nano/Uno:
  • From the Arduino15 folder, go to packages/arduino/hardware/avr/{version}
  • Create platform.local.txt containing compiler.cpp.extra_flags=-DSERIAL_RX_BUFFER_SIZE=128
  • Restart the Arduino IDE
• Bazjo D-Com v1:
  • Install MiniCore
  • From the Arduino15 folder, go to packages/minicore/hardware/avr/{version}
  • Open boards.txt
  • Find the line 328.build.extra_flags={build.clkpr}
  • Add to the end of that line, so that it says:
    • 328.build.extra_flags={build.clkpr} -DSERIAL_RX_BUFFER_SIZE=128
  • Restart the Arduino IDE
  • From the Tools menu, select Board:MiniCore:ATmega328 and Variant:328PB (leave the other board options alone)

Installing library

• Clone the repo into your Arduino libraries directory
• OR Use the "Download ZIP" option on GitHub with Sketch > Include Library > Add .ZIP Library
  • If updating, you will need to delete the previous version first
• Open the ClassicComUnit example

Other DMComm versions

• For the original version which is not a library, see https://github.com/dmcomm/dmcomm-project
• For the CircuitPython version for RP2040, see https://github.com/dmcomm/dmcomm-python

This software is loosely based on dmcomm-python, but avoiding dynamic allocation (except in SerialFollower).