#The uart application#

Interface description

uart

Dependencies

To build uart you will need a working installation of Erlang R15B (or later).
Information on building and installing Erlang/OTP can be found here (more info).

uart is built using rebar that can be found here, with building instructions here. rebar's dynamic configuration mechanism, described here, is used so the environment variable REBAR_DEPS should be set to the directory where your erlang applications are located.

uart also requires the following applications to be installed:

• dthread - https://github.com/tonyrog/dthread

If you use ftdi devices you can find drivers at http://ftdichip.com/.

Downloading

Clone the repository in a suitable location:

$ git clone git://github.com/tonyrog/uart.git

Configurating

Concepts

Hint on how to set low latency timer when using usb-serial (ftdi_sio) on linux. The latency_timer can be set using (as root):

#echo 1 > /sys/bus/usb-serial/devices/<tty-name>/latency_timer

...

Files

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Building

Compile:

$ cd uart
$ rebar compile
...
==> uart (compile)

Testing

Without hardware

Basic test of uart can be done without having any dongles:

$ cd uart
$ rebar ct
...
==> uart (ct)

With hardware

If you want to test with hardware you must configure the appropriate devices in uart.cfg and then run:

$ cd uart/test
$ ct_run  -spec uart_hw.spec
...