Someone was asking me if it would be possible to monitor the serial communication between two PCBs and output something that is readable. The PCBs are part of an automatic door system - I'm not sure of the baud rate, protocol, or anything right now.
Do you think it would be possible to use an Arduino or something similar to do this? Would it be able to output readable text? Can logic analysers do this? At this point I'm not sure whether it would be I2C, SPI, or just have RX/TX lines, but I'm sure that could be figured out.
Since it would just be listening to a bunch of 1's and 0's without the opportunity to transmit back, I'm concerned it would just end up incorrectly interpreting a bunch of 1's and 0's, resulting in useless data. What do you think?
I am just trying to gauge the difficulty of such a thing, and the best way to go about it.