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  4. Terminal Connection to the RIoT Board

Terminal Connection to the RIoT Board

Erich Styger user avatar by
Erich Styger
·
Jul. 22, 14 · Interview
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i admit: i love command line interfaces. because that gives me usually much more control than any gui (graphical user interface). i like the fact that they have put a uart interface on the riot board:

j18 uart on the riot board

j18 uart on the riot board


the header is j18, and labeled as ‘debug’. but it is not really debug port, it is the console/uart to the system running on the board :-)

to connect it to a host pc, i need a level shifter or a uart-to-usb cdc converter.

a convenient one is available from element14 , and embest has a quickstart guide for it ( http://www.embest-tech.com/download/201406051241.html ).

uart8000-u

uart8000-u

the converter gets connected to j18. the rx and tx lines need to be crossed as shown in the picture below:

uart8000-u connection to riot board

uart8000-u connection to riot board

the uart8000-u uses a ftdi chip, and i already had drivers for it installed on my system, so everything installed automatically:

:idea: http://www.embest-tech.com/shop/product/uart8000-u.html provides drivers downloads for linux and windows.  mac users probably can get the drivers directly from http://www.ftdichip.com/ftdrivers.htm

installing device driver software

installing device driver software

installing ft230x basic uart

installing ft230x basic uart

device ready to use

device ready to use

connection to the board is with 115200 baud:

serial port settings for riot uart

serial port settings for riot uart

with this, i have a working console and shell interface to the riot board:

working console and shell interface

working console and shell interface

:-)

summary

the riot board comes with a 3-pin header (tx, rx and gnd) which gives a console/uart connection to the board. any kind of uart-to-serial (usb cdc or rs-232) can be used, and using the uart8000-u cable is a convenient solution.

:idea: and as a last tip: i have found http://www.embest-tech.com/shop/star/riotboard.html which is a good information for schematics and other good information.

happy uarting :-)

Connection (dance) terminal

Published at DZone with permission of Erich Styger, DZone MVB. See the original article here.

Opinions expressed by DZone contributors are their own.

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