Case study

PrimeComm: reconstructing HP Prime file communication

PrimeComm implements file communication with the HP Prime calculator from the author's device reverse engineering. It provides a Windows GUI, PrimeCmd command-line access and PrimeLib for sending, receiving and converting calculator programs; the author says modern firmware changed the communication protocol.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06

Stars: 23
Last commit: 2020-09-24
Language: C#
Status: Archived

GitHub data as of 2026-11-09

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Requirements & limits

An HP Prime calculator with firmware compatible with the older communication protocol.
The author says the project does not work with modern firmware.

Cite

BibTeX

@misc{primecomm-hp-prime-case,
  title = {{PrimeComm: reconstructing HP Prime file communication}},
  howpublished = {\url{https://github.com/eried/PrimeComm}},
  url = {https://github.com/eried/PrimeComm},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/primecomm-hp-prime-case/}}
}

Plain text

PrimeComm: reconstructing HP Prime file communication. https://github.com/eried/PrimeComm (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/primecomm-hp-prime-case/

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Primary sources

README.md GitHub · eried/PrimeComm · Revision a0ac20e