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is UART2 directly available on simpleRTK2B ?

Q&A forumCategory: Questionsis UART2 directly available on simpleRTK2B ?
yahya.aouledamer asked 1 month ago
Hi,
I am sending RTCM over uart2, and I want to read it from raspberry pi, but I can’t read it.
Notice that I’m not using an Xbee module.
Should I do a trick ?

1 Answers
clive1 answered 1 month ago
You don’t need a XBee Radio, the signal comes out of RX2 (yes RX2) on the Arduino rail, at the voltage level determined by the IOREF pin. For a RPi connect IOREF to 3.3V
yahya.aouledamer
replied 1 month ago

Why arduisimple made the output on RX2 and not just TX2 ?

clive1
replied 1 month ago

Because they are terms relative to the XBEE, and thus the emphasis to avoid you using the wrong pin, the trick is to take the output from the output pin.

TX2 is the INPUT (ZED UART2 RX, XBEE TX)
RX2 is the OUTPUT (ZED UART2 TX, XBEE RX)

I believe there is some diode gating such that two outputs won’t directly fight, but they can still interfere. Sorry don’t have a schematic, but I do know how to diode-and a pair of normally high signals.

yahya.aouledamer
replied 1 month ago

Thanks clive, you’re always answering me both here and in ublox portal community support

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