DmxSimple.write(channel, value)

Function

Updates a DMX channel to a new value.

DmxSimple maintains a buffer of all the DMX channels, and transmits them on the next transmission cycle. DmxSimple.write() is used exactly like analogWrite(). There is no visible delay between writing a new channel and the response of the DMX lamp - the whole process happens in around 20ms.

channel

channel is an integer (int). Valid values are between 1 and 512 inclusive, which correspond to DMX channels 1 to 512. Writes to invalid channels are ignored.

value

value is an integer of 8 bits. Valid values are between 0 and 255 inclusive, which correspond to DMX levels between 0 (off) and 255 (full).

The meaning of particular values for particular channels can change depending on which DMX lamp is being used. Typically 0 means off and 255 means full on, but this can change. Consult your lamp manual.

Side effects

DmxSimple.write() automatically initialises the DMX library if that is required. It also adjusts maxChannel if you write to a channel above maxChannel's limit.

For most situations, DmxSimple.write() is the only command you will ever need.