[mihini-dev] Lua Remote Application / Mihini GPIO

[mnerys@xxxxxxxxxx]

Hello All,

I was really glad to see the new Lua
GPIO package being available in Mihini. I am already able to make a blinking
LED with the Raspberry Pi. \o/

I used the info here:
http://download.eclipse.org/mihini/api/lua/gpio.html

However, at first, it was quite hard
to understand how to map the "id" in a call "gpio.write(id,
value)" to some actual pin on the device. After some googling, I could
find:
http://elinux.org/Rpi_Low-level_peripherals

which made me able to somehow identify
the pins and their corresponding ids. So, maybe the page http://download.eclipse.org/mihini/api/lua/gpio.html
could be improved to make it easier for newcomers to get their Pi and start
playing directly with Mihini GPIO library.

==

Next, in order to see the blinking LED,
I am starting Mihini with the following command (note the "-u root
-g root" instead of the usual "-u pi -p pi"):

cd
 ~/mihini
sudo
./bin/appmon_daemon -a /home/pi/mihini/start.sh
-w
/home/pi/mihini -u root -g root -n 5 2>&1

With this, when I use Koneki to export
a Lua Application package and the app starts to run, I can see the blinking
LED. I can also see the log of my application being written to the shell
I executed the command above.

So, now it comes my question regarding
Koneki's ability to remotely run and/or debug a Lua Application. After
using Koneki to stop the recently exported application, the log stops along
with the blinking LED, as expected. The LED keeps is now in a fixed state
(either on/off depending on when the stop occured)).

Going to the Lua perspective in Koneki;
right-clicking the main.lua file; and using "run as > Lua Remote
Application", I can see the log being written to Koneki's Console
view, but the LED does not start flashing.
If I stop the application (by clicking
on the "stop" icon close to the "Console view" header
and I use the Remote System Explorer perspective to start the app, then
everything works again (I can see the log on my shell window and I see
the blinking LED).

Any ideas why running the main.lua as
a Lua Remote Application is not being able to make the LED blink while
still showing the logs and starting the remote process?

My main.lua file looks like this:

--

local
log
  = require "log"
local
sched
= require "sched"
local
gpio
= require "gpio"

local
function
main()
    i = 1
    local
val
= gpio.configure(18,
{direction="out",
edge="none",
activelow="0"})
    while
(true)
do
      log("GENERAL",
"INFO",
"My first Mihini app
is alive :) oxoxoxo ".. i)
      i = i
+ 1
      gpio.write(18,
1)
      sched.wait(0.1)
      gpio.write(18,
0)
      sched.wait(0.1)
    end
end
 
sched.run(main)
sched.loop()

--

Thanks,  
Marcelo Nery dos Santos
Research Software Engineer

Phone: 55-21-2132-3663 E-mail: mnerys@xxxxxxxxxx

Av. Pasteur 146 & 138 Rio de Janeiro, RJ 22290-240 - Brazil