+- PINE64 (https://forum.pine64.org)
+-- Forum: Pinebook Pro (https://forum.pine64.org/forumdisplay.php?fid=111)
+--- Forum: Pinebook Pro Hardware and Accessories (https://forum.pine64.org/forumdisplay.php?fid=116)
+--- Thread: Explaination for UART through-hole pads? (/showthread.php?tid=18123)
Explaination for UART through-hole pads? - wishindo - 04-11-2023
Near the connector for the keyboard ribbon cable, there is a set of three though-hole pads labeled Rx, Tx, and Gnd. Is this the debug serial port from the SoC before it is multiplexed with analog audio on the 3.5mm jack?
RE: Explaination for UART through-hole pads? - KC9UDX - 04-11-2023
I don't think it's multiplexed; it's switched. But I'm pretty sure you can connect there and avoid turning off the audio output.
RE: Explaination for UART through-hole pads? - wishindo - 04-12-2023
(04-11-2023, 06:29 PM)KC9UDX Wrote: I don't think it's multiplexed; it's switched. But I'm pretty sure you can connect there and avoid turning off the audio output.
Do you know if there is a lower speed limit or other limitation on the baud rate? Or the number of the UART so that I can look for this info in the SoC datasheet?
RE: Explaination for UART through-hole pads? - KC9UDX - 04-13-2023
I don't think you can turn it down. But the information for it is in the wiki.