dmx 512 16 bit data format

[microlab]

hi all

some dmx transmitters use coarse and fine settings which transmits 16 bit data
how can we decode that using mcu ?

thanks

mL

 

[ZASto]

https://en.wikipedia.org/wiki/DMX512

8-bit v. 16-bit

DMX does not mandate a method of 16-bit encoding for Null Start Code packets, however many parameters of moving lights make use of encoding larger than 8 bit numbers. To control these parameters more accurately, some fixtures use two channels for parameters that require greater accuracy. The first of the two channels controls the coarse (256 steps for the whole range of movement) and the second the fine (256 steps for each coarse step), this gives a 16-bit value range of 65536 steps, permitting much greater accuracy for any 16-bit controlled parameter such as Pan or Tilt.