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Butialo is a user-friendly environment that allows programming of the Butiá in the Lua language. Lua is a simple imperative scripting language but can create sophisticated programs. It is a dynamic language with automatic memory management and is extremely fast. Butialo is a derivative of the Pippy IDE (Python environment provided with the XO), which simplifies the creation of programs for the presence of components connected to the Butiá and offering snippets of code to access them.
Butialo is a user-friendly environment that allows programming of the [[Activities/TurtleBots#Buti.C3.A1|Butiá]] robot in the [http://www.lua.org/ Lua language]. Lua is a simple imperative scripting language but can create sophisticated programs. It is a dynamic language with automatic memory management and is extremely fast. Butialo is a derivative of the [http://activities.sugarlabs.org/en-US/sugar/addon/4041 Pippy] IDE (Python environment provided with the XO), which simplifies the creation of programs for the presence of components connected to the Butiá and offering snippets of code to access them.
The authoritative documentation is in the Spanish language at [http://www.fing.edu.uy/inco/proyectos/butia/mediawiki/index.php/Butialo]
'''The authoritative documentation is in the Spanish language at [http://www.fing.edu.uy/inco/proyectos/butia/mediawiki/index.php/Butialo]'''
[[File:Butialo.jpg]]
==Installation==
==Installation==
Download the Activity at [http://activities.sugarlabs.org/sugar/addon/4457]
Download the Activity at [http://activities.sugarlabs.org/sugar/addon/4457]
Later versions of Sugar do not work with Butialo V4, so far tested OK on Sugar 0.88 and failing on Sugar 0.94. (Error 'libreadline.so.5 cannot open shared object file' This could be solved either by installing libreadline, or building lua with no libreadline support.)
==Programming documentation==
Common commands are shown in the samples on the left of the screen. For more documentation on Lua commands see the [http://www.lua.org/docs.html documentation for Lua]. For Butia specific commands, after installing TurtleBots, look in ~/Activities/TurtleBots.activity/plugins/butia/butiaAPI.py for their syntax.
==Simple example==
==Simple example==
Butia with dynamic stability. Take a Butiá, remove idler wheels and place an IR distance sensor pointing to the floor. The button toggles the behavior.
Butia with dynamic stability. Take a Butiá, remove idler wheels and place an IR distance sensor pointing to the floor. The button toggles the behavior.
local d --lecturas de distancia
local d --measured distance
local eq --posicion de equilibrio de d
local eq --equilibrium position of d
local v --velocidad calculada
local v --calculated velocity
while true do
while true do
print ("Presione el botón para comenzar")
print ("Press the button to start")
repeat until Boton.getBoton()==1
repeat until Boton.getBoton()==1
eq = Dist.getDistancia()
eq = Dist.getDistancia()
print("Arrancando", eq)
print("Starting", eq)
util.wait(1)
util.wait(1)
until Boton.getBoton()==1
until Boton.getBoton()==1
print("Fin")
print("Finished")
Motores.setvel2mtr(1, 0, 1, 0)
Motores.setvel2mtr(1, 0, 1, 0)
util.wait(1)
util.wait(1)
end
end
[http://www.youtube.com/watch?feature=player_embedded&v=3A0-Jmpk3c0 Video]
==Util==
Butialo provides various auxiliary functions.
util.wait (t)
Pauses program execution for t seconds.
util.get_time ()
Returns the system time, in seconds.
==Continue reading in Spanish==
==Continue reading in Spanish==
[http://www.fing.edu.uy/inco/proyectos/butia/mediawiki/index.php/Butialo]
[http://www.fing.edu.uy/inco/proyectos/butia/mediawiki/index.php/Butialo]
[[Category:Activities]]