Hi, Since BBB is a 32 bit device and the microcontroller is 8 bit, shouldn't we set the number of data bits in UART frame in BBB to 8 bits?
On Thursday, May 22, 2014 9:34:13 PM UTC+5:30, Joshua Datko wrote: > > > > I did a blog post showing how to use UART4 to talk to an ATmega328p > [1]. My ATmega was at 3.3V though, so you'll need to use logic level > converters (MOSFETs) to convert between your 5V micro and the Beagle, > which operates at 3.3V logic levels. This blog post [2] uses the 5V > version and shows how to use the logic level converters. > > If you have a recent debian image, you can enable UART 4 with the > following command: > > echo BB-UART4 | sudo tee /sys/devices/bone_capemgr.*/slots > > If you don't have the BB-UART4-00A0.dtbo in /lib/firmware, you should > probably upgrade your BBB. > > After that command, you should see /dev/ttyO4 appear, which is the UART > you seek. > > You may need to change the baud rate of your serial line, do that with > this command: > > sudo stty -F /dev/ttyO4 9600 > > Good luck, > > Josh > > > [1] http://datko.net/2013/11/11/bbb_atmega328p/ > [2] > http://www.instructables.com/id/Program-an-Arduino-using-BeagleBone-without-USB/?ALLSTEPS > > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
