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Topic: direct serial Communication with a DUE (Read 96 times) previous topic - next topic

BastianG

Hello,

I Want to connect my DUE to my aftermarket ECU of my RX7. It's apexi PowerFC, which allows direct communication via RS-232.
How can I connect the DUE to the RS-232 port of the ECU to commincate with SERIAL?
Do I need additional hardware or can I wire a serial connection direct to the DUE pins?

Best regards
Bastian

PCWorxLA

Hello,

I Want to connect my DUE to my aftermarket ECU of my RX7. It's apexi PowerFC, which allows direct communication via RS-232.
How can I connect the DUE to the RS-232 port of the ECU to commincate with SERIAL?
Do I need additional hardware or can I wire a serial connection direct to the DUE pins?

Best regards
Bastian
To quote from the docs at arduino.cc
Quote
The Arduino Due has three additional 3.3V TTL serial ports: Serial1 on pins 19 (RX) and 18 (TX); Serial2 on pins 17 (RX) and 16 (TX), Serial3 on pins 15 (RX) and 14 (TX).
Please take notice that it clearly states that those are 3.3V pins. Attaching anything that will supply a higher voltage (5V is quite common on RS-232 type equipment) will fry your Due...

Ralf

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