brickpi-coffeescript/src/Buttons.coffee

BrickPi API implementation in CoffeeScript for JS/CS

module.exports = class Buttons
  # Initialize all the buttons to 0
  constructor: (@brickPi) ->
    @l1 = 0
    @l2 = 0
    @r1 = 0
    @r2 = 0
    @a = 0
    @b = 0
    @c = 0
    @d = 0
    @tri = 0
    @sqr = 0
    @cir = 0
    @cro = 0
    @ljb = 0
    @ljx = 0
    @ljy = 0
    @rjx = 0
    @rjy = 0

  # Update all the buttons
  update: (I2C_PORT) ->

    # For all buttons:
    # 0: Unpressed
    # 1: Pressed

    sensorIn = @brickPi.SensorI2CIn
    p = I2C_PORT

    #Left and right joystick: -127 to 127
    @ljb =~ (sensorIn[p][0][0] >> 1) & 1
    @rjb =~ (sensorIn[p][0][0] >> 2) & 1

    #For buttons a,b,c,d
    @d =~ (sensorIn[p][0][0] >> 4) & 1
    @c =~ (sensorIn[p][0][0] >> 5) & 1
    @b =~ (sensorIn[p][0][0] >> 6) & 1
    @a =~ (sensorIn[p][0][0] >> 7) & 1

    #For buttons l1,l2,r1,r2
    @l2 =~ (sensorIn[p][0][1]) & 1
    @r2 =~ (sensorIn[p][0][1] >> 1) & 1
    @l1 =~ (sensorIn[p][0][1] >> 2) & 1
    @r1 =~ (sensorIn[p][0][1] >> 3) & 1

    #For buttons square,triangle,cross,circle
    @tri =~ (sensorIn[p][0][1] >> 4) & 1
    @cir =~ (sensorIn[p][0][1] >> 5) & 1
    @cro =~ (sensorIn[p][0][1] >> 6) & 1
    @sqr =~ (sensorIn[p][0][1] >> 7) & 1

    #Left joystick x and y , -127 to 127
    @ljx = sensorIn[p][0][2] - 128
    @ljy =~ sensorIn[p][0][3] + 129

    #Right joystick x and y , -127 to 127
    @rjx = sensorIn[p][0][4] - 128
    @rjy =~ sensorIn[p][0][5] + 129

  showValues: ->
    console.log "ljb rjb d c b a l2 r2 l1 r1 tri cir cro sqr\
                 \tljx\tljy\trjx\trjy"
    console.log "#{@ljb}  #{@rjb}  #{@d} #{@c} #{@b} #{@a}
                 #{@l2}  #{@r2}  #{@l1}  #{@r1} \
                  #{@tri}  #{@cir}  #{@cro}  #{@sqr}
                  \t#{@ljx} \t#{@rjx} \t#{@ljy} \t#{@rjy}\n"