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Alex Sidorenko

Open-source ELM327 OBD adapter

Status: Proposal
September 16, 2016
The NXP LPC1517 Cortex-M3 chip with 64 kB program memory is the core of the adapter, but it can accommodate another chip from same family like LPC1549 with 256 kB if required.

The Highlights
  • NXP LPC1517JDB48 ARM Cortex M3 72Mhz processor
  • 64kB Flash, 12kB RAM
  • Using NXP sophisticated State Configurable Timers to do the precise signal handling for J1850 PWM/VPW protocols
  • CAN FIFO buffers for handling some not-strict ISO-compliant ECUs
  • Botloader for initial firmware programming
  • Low power consumption

The source code is now on GitHub source code repository and the full project page is here.
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