theUltimateSource Posted February 8, 2019 Share Posted February 8, 2019 I know that RX / TX lines for UART connection are going to be swapped at one end or another. but why do you swap them for the status LED that are showing activity? When the Zybo board is sending a message the RX LED lights up? Link to comment Share on other sites More sharing options...
zygot Posted February 8, 2019 Share Posted February 8, 2019 I get your frustration but also feel a bit of sympathy with the folks at Digilent. The confusion is a grandchild of the RS-232 specification back when UART usually implied RS-232. This peer to peer interface had DCE or DTE ends, connector genders and connectors with different numbers of pins.... what a mess! Using a UART was as much fun as a snowy two lane country road where there are only 3 ( the middle one being shared by traffic going both directions ) bare strips for your tires amid the ice and snow.I still have nightmares about not being able to do something because I can't find a $%#^% gender or DB-9 to DB25 changer... At least I have to congratulate Digilent on being consistent and providing a clue in the signal names as to what you need to look out for when using an external UART. So which kind of device is the Zybo? I could argue for either one... Link to comment Share on other sites More sharing options...
jpeyron Posted February 8, 2019 Share Posted February 8, 2019 Hi @theUltimateSource, These hardware processes are based an the view from the PC. That the PC's TX and or the PC's RX lines are being used. I will pass on your observation to our content team to see if there is a better way to convey this information. thank you, Jon Link to comment Share on other sites More sharing options...
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theUltimateSource
I know that RX / TX lines for UART connection are going to be swapped at one end or another.
but why do you swap them for the status LED that are showing activity? When the Zybo board is sending a message the RX LED lights up?
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