Serial Port Communication

[Tyguy56]

Originally Posted by Alan Anderson

Your code says you're transmitting at 115200. That would definitely give you the kind of short garbled results that you describe.



Why are you encoding as UTF-8? It does end up being the same actual byte stream for straight ASCII* characters, but anything outside the ASCII range will be sent as multiple bytes that your terminal might not understand.



* American Standard Code for Information Interchange, pronounced "ask-ee"

sorry im new to serial coms would it be better to not encode at all?
if I run at 9600 baudrate and no encoding with the same setup (tegra serial port to arduino and arduino to computer then open com port on putty) it only returns ░:: h̶o̶w̶e̶v̶e̶r̶ ̶a̶f̶t̶e̶r̶ ̶t̶e̶s̶t̶i̶n̶g̶ ̶a̶d̶d̶i̶t̶i̶o̶n̶a̶l̶l̶y̶ ̶w̶h̶e̶n̶ ̶t̶h̶e̶ ̶s̶a̶m̶e̶ ̶s̶e̶t̶u̶p̶ ̶i̶s̶ ̶r̶a̶n̶ ̶o̶n̶ ̶t̶h̶e̶ ̶r̶o̶b̶o̶r̶i̶o̶ ̶i̶t̶ ̶w̶i̶l̶l̶ ̶r̶e̶t̶u̶r̶n̶ ̶w̶h̶a̶t̶ ̶I̶ ̶a̶s̶s̶u̶m̶e̶ ̶i̶s̶ ̶r̶a̶n̶d̶o̶m̶ ̶b̶y̶t̶e̶s̶ ̶e̶g̶.̶ ̶[̶B̶@̶8̶c̶f̶4̶c̶6̶[̶B̶@̶e̶d̶c̶d̶2̶1̶[̶B̶@̶c̶4̶5̶d̶c̶a̶ ̶e̶t̶c̶ ̶e̶t̶c̶ ̶w̶i̶t̶h̶ ̶n̶o̶ ̶p̶a̶t̶t̶e̶r̶n̶ ̶
̶U̶P̶D̶A̶T̶E̶ ̶I̶ ̶a̶l̶s̶o̶ ̶n̶o̶w̶ ̶g̶e̶t̶ ̶e̶r̶r̶o̶r̶s̶ ̶i̶n̶ ̶m̶y̶ ̶r̶i̶o̶l̶o̶g̶ ̶w̶h̶i̶c̶h̶ ̶s̶a̶y̶ ̶W̶A̶R̶N̶I̶N̶G̶:̶ ̶R̶o̶b̶o̶t̶s̶ ̶d̶o̶n̶'̶t̶ ̶q̶u̶i̶t̶

[Tyguy56]

Okay fixed a couple errors, hooked it up to the roborio and initiated a serial connection there at 9600 baudrate now it prints out to the riolog when I do a system.out.println(serial.readString()) however I am doing no encoding so just ser.write('hello') I am now getting in my riolog ?::

[orangelight]

Originally Posted by Tyguy56

Okay fixed a couple errors, hooked it up to the roborio and initiated a serial connection there at 9600 baudrate now it prints out to the riolog when I do a system.out.println(serial.readString()) however I am doing no encoding so just ser.write('hello') I am now getting in my riolog ?::

This thread might help you

[Tyguy56]

Thank you everyone, after going to http://www.chiefdelphi.com/forums/sh...d.php?t=132680 (special thanks to orangelight for the link) we learned that another team solved this by using the usb port instead of the serial port and then used a usb prolific rs-232 converter directly into the rio. Thank you all for your help!

[techhelpbb]

Originally Posted by Tyguy56

Thank you everyone, after going to http://www.chiefdelphi.com/forums/sh...d.php?t=132680 (special thanks to orangelight for the link) we learned that another team solved this by using the usb port instead of the serial port and then used a usb prolific rs-232 converter directly into the rio. Thank you all for your help!

So you worked around it.
It seems like a timing issue.