0
votes
2answers
387 views

RS 232 serial sniffing

We have a task in hand to sniff a RS232 protocol in a certain industrial automation setting(we have been asked to do this legally by the manufacturing company itself). We are planning to send a ...
2
votes
4answers
374 views

Why buy protocol analyzer modules for an oscilloscope?

Scopes with logic analyzer inputs often have optional add-on modules that let them decode various serial protocols: SPI, RS-232, I²C, CAN, etc. Tek and Agilent want around US $700 per protocol family ...
9
votes
4answers
2k views

How to reverse engineer I2C and SPI protocols?

If I have an unkown device which talk I2C or SPI how can I reverse engineer the protocol. Basically I am looking for something similar as snoop or tcpdump. For software Mac is preferred but can also ...