I would be happy if you give me a advice or show me the sample code.
One year before, I wrote a luminosity sensor application on my RPi model B in Ruby. Thanks to the this library I could make app without deep understanding.
https://github.com/jwhitehorn/pi_piper
I've got a RPi2 last week and I've tried to update my luminosity application. Unfortunately, pi_piper doesn't support RPi2. I'm thinking about using the WiringPi-Ruby instead of pi_piper but I don't have any idea where to start.
Here is the code and circuit that I made before.
require 'pi_piper'
loop do
value = 0
PiPiper::Spi.begin do |spi|
raw = spi.write [0b01101000,0]
value = ((raw[0]<<8) + raw[1]) & 0x03FF
end
puts value
sleep(1)
end
I used the mcp3002 as a ADC.