Metra M1T380 Tools
This repository contains tools that I've developed when working and reverse-engineering Metra M1T380 multimeter. If you have such a device and you're thinking of hacking it, some of these may turn out to be useful.
ADCON
ADCON is a tool that talks to D1639/D1791 ADC board via a simple Arduino Leonardo adapter. No extra hardware is needed except for Arduino, some wires and connectors. It allows you to excersise low-level control over ADC, collect data (e.g. when you want to analyze stability of ADC measurements over time or temperature), and execute built-in factory tests which can be helpful during ADC board repair.
CPUEMU
CPUEMU is a system-level M1T380 emulator that runs factory i8080 EPROM images, and simulates minimal set of 8080 peripherals to make it useful. I wrote it to analyze (trace) different aspects of factory 8080 FW, specifically to reverse-engineer the layout of CALRAM memory.
Writing an emulator and tracing the execution is surely easier than fully reverse-engineering 8 KiB of hand-written 8080 assembly!
License
See LICENSE