Curtain Dooya dt82tv

[admin]

Attach an event script to a 4-bit object. A different command is sent depending on the input value (stop, up or down).

Code:

value = event.getvalue()

up = bit.band(value, 8) ~= 0
stop = bit.band(value, 7) == 0

if stop then
  command = string.char(0x55, 0x01, 0x01, 0x03, 0x03, 0x38, 0xC1)
elseif up then
  command = string.char(0x55, 0x01, 0x01, 0x03, 0x02, 0xF9, 0x01)
else
  command = string.char(0x55, 0x01, 0x01, 0x03, 0x01, 0xB9, 0x00)
end

require('serial')

port = serial.open('/dev/RS485-1', {
  baudrate = 9600,
  parity = 'even',
  duplex = 'half'
})

port:write(command)