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xorbit / LiFePO4wered-Pi

Access library, command line tool and daemon for the LiFePO4wered/Pi module
GNU General Public License v2.0
132 stars 31 forks source link

Clarity of doc around use of UART #17

Closed unphased closed 6 years ago

unphased commented 6 years ago

I see now that the installer ensures enable_uart=1 so that it turns on so it can be used to communicate the shutdown state.

In various comments you mention only the TX is used.

It was unclear for me until I did some digging: The LiFePO4wered-Pi does NOT do any actual "reading" on the TX. It only checks if it is high. Yes you have stated this, but I was worried about it upon first seeing this.

Now that I know that the installer only sets enable_uart=1, I know my software will be completely unaffected by the presence of the LiFePO4wered-Pi also being attached to the pin. Maybe you can add a sentence in the product brief that clarifies this.

xorbit commented 6 years ago

Good suggestion, thanks!

xorbit commented 6 years ago

The latest product briefs have been updated with detailed information on how each pin is used. See https://lifepo4wered.com/files/LiFePO4wered-Pi3-Product-Brief.pdf