Discussions

I'm trying to use one of the extra UART connections on the Pixhawk to interface to a Beaglebone Black.  I found in the Pixhawk HAL library (HAL_PX4_Class.cpp) where to assign device information, i.e. /dev/ttyS1 etc.  I haven't had any luck finding any documentation as to what the device names for UART 4 and 5 are.  I was wondering if there were any developers out there who could quickly provide an answer on this.  

I'm trying to use UART4, so I tried assigning a uart device to /dev/ttyS4, just assuming the device names might be numbered similarly.  But I didn't have any luck writing data out of UART4 after hooking it up to a scope.  Is there some documentation somewhere that someone could point me to?  Thanks!