Octobars / Shiftbrite ( Allegro A6281 ) SPI Packet Sender

gistfile1.rb

def sb_SendPacket(r=0,g=0,b=0,c=0b00,packet=0)
  packet = (packet << 2)  | (c & 0b11)
  packet = (packet << 10) | (b)
  packet = (packet << 10) | (r)
  packet = (packet << 10) | (g)
  bits = packet.to_s(2).rjust(32, "0").chars.to_a
  bits.insert(22, "_").insert(12, "_").insert(2, "_").insert(1, "_")
  bit_str = bits.join("")
  c_str = c.to_s(2).rjust(2,"0")
  r_str = r.to_s(2).rjust(10,"0")
  g_str = g.to_s(2).rjust(10,"0")
  b_str = b.to_s(2).rjust(10,"0")
  s1 = 0b11111111_00000000_00000000_00000000
  s2 = 0b00000000_11111111_00000000_00000000
  s3 = 0b00000000_00000000_11111111_00000000
  s4 = 0b00000000_00000000_00000000_11111111
  sval1 = ((s1 & packet) >> 24)
  sval2 = ((s2 & packet) >> 16)
  sval3 = ((s3 & packet) >> 8)
  sval4 = ((s4 & packet))
  @spi.write [sval1, sval2, sval3, sval4]
end