README.tty

Asuro USB Transceiver
=====================

With "Remote Sensor Connections" enabled scratch talks to your machine
and we need a way to send that instructions to Asuro using the Serial
USB transceiver. 

For Mac OS X install the Driver (I chose
FTDIUSBSerialDriver_v2_2_14.dmg) from ftdichip.com. Then plug in the
Transceiver  (you can watch the output in the Konsole application). The
device should be visible as /dev/tty.usbserial-AXPR090F 

You can connect to it using

screen /dev/tty.usbserial-AXPR090F 


stty
----
The terminal needs to be set to 2400 baud 8N1. This can be done in
minicom or with the stty command:

stty -F /dev/ttyUSB0 2400 -parity -cstopb

(see man stty)

socat
-----
socat is a redesigned netcat and can connect sockets to many kinds of
devices, also tty's. This way you can redirect the remote sensor
information from one host (with the Transceiver plugged in) to another
host (running an instance of Scratch). 

In the simplest form when all is on one machine instead of 

nc 172.17.1.86 42001

you can do 

socat - TCP4:172.17.1.86:42001

python
------
You can also do the serial communication using python and PySerial. 

http://www.varesano.net/blog/fabio/serial%20rs232%20connections%20python 
http://pyserial.sourceforge.net/shortintro.html

bash
----

Talking to sockets in bash/shellcode and reading the data with dd:

http://www.unix.com/shell-programming-scripting/191031-read-write-tcp-socket.html
http://blog.chris007.de/?p=238

A sample implementation that has been tested on Debian and OpenWRT is asuro.sh