#!/usr/bin/ruby
#
# My first try at Ruby programming for the Wattson power meter
#

require 'uri'
require 'net/http'
require('rubygems')
require('time')
require 'serialport'
gem('twitter4r', '0.3.2')
require('twitter')
require('twitter/console')
require 'timeout'

$version = "0.1";
$debug = false;

#params for serial port
port_str = "/dev/tty.usbserial-A4004sx2" #differs depending on your setup
baud_rate = 19200
data_bits = 8
stop_bits = 1
parity = SerialPort::NONE

sp = SerialPort.new(port_str, baud_rate, data_bits, stop_bits, parity)
sleep(2)
sp.write "nowp\r"
puts "Start"
begin
while true do
inn = ' '
sp.write "nowp\r"
inn[0] = sp.getc
inn[1] = sp.getc
inn[2] = sp.getc
inn[3] = sp.getc
inn[4] = sp.getc
if $debug then
puts inn
end
if inn.length < 6 then
inn2 = inn.slice!(1..4)
print Time.now.hour.to_s + ':' + Time.now.min.to_s + "->" + inn2.hex.to_s + 'W'
puts ''
sleep(2)
twitter = Twitter::Client.from_config("/users/gisvold/.twitter.yml",'house')
message = "Power usage just now ->" + inn2.hex.to_s + 'W'
twitter.status(:post,message )
sleep(0)
end
sleep(300)
end
end