(This might cause order dependent bugs...)

Fix vesp controller block.

Can be used to calculate a voltage limit based on the current voltage and
current and a current limit.

Add script to enable pwm on beaglebone

Determines current limit based on the i2t algorithm.

With this block motor state can be derived from voltage and speed.

Tested with beckhoff blocks connected.
(Still only one ethercat bus, multiple busses remains untested.)

Add test ctrl file for testing variable types.

Allow multiple ethercat busses to exist.
NOT TESTED YET!

Use external libnova instead of locally build.
(Upstream libnova has aberration fix as of Jul 9 2015)

Introduce track command in 3rd order spg.
With this command the spg is set to track the 'track_x' input but will
still honour all limits (v, a, j, x)

Add pin mux setting.

More retries in the same time for vesp commands.

Also module enable code for am335x.

broken)

Add 'channel' fields to trace stream headers of name and value packets.
(channel number must be zero for now)

Simplify vesp.ctrl to get succesfull 'make test'

Small fixes to trace code and trace server.

Add some build flags to make more stuff switchable.
Fix delay setting for rs485 in block_vesp_tty. (prevent hanging serial port).

Use it for block parameters.
Use it for ethercat frames. (non pdo)
Use it for vesp commands.