Project:USB Disco Dance Floor/v1/firmware: Difference between revisions

Project:USB Disco Dance Floor/v1/firmware (view source)

416 bytes removed , 4 April 2011

Info about neighbours query call

120

edits

@@ Line 62: / Line 62: @@
 |1.2?
 |-
-|colspan="2"|???
+|colspan="2"|Asks the board to search for its immediate neighbours. The board will respond with 8 bytes representing the two-byte IDs of its neighbours, starting with its "top" connection and proceeding clockwise. If no neighbour is found in a given position, 0x0000 is returned. If a neighbour is found but it has not been given an identifier for this session, it will return 0xFFFF.
+This should allow the controller software to automatically detect the layout of the floor.
 |-
 !rowspan="2"|0E
@@ Line 269: / Line 271: @@
       | (0,1), (1,0))
-Co-ordinates
-------------
-Co-ordinates are specified as four two-bit values packed into a single byte:
-xxyywwhh
-Scroll spec
------------
-A scroll spec is specified as two two-bit values plus two one-bit values
-packed into a single byte: xxyy0w0h. The scroll amount in the X and Y axes is
-set by xx and yy, and if w/h are one the direction is reversed.
-Colour specification
---------------------
-The board will report how many colours it supports at reset time. One colour
-will be referred to here as "R", three as "RGB" and four as "RGBU". The board
-also sends the number of bits that it can use for setting each colour
-brightness (n). Combining these parameters gives us a colour specification.
-The colour spec consists of n bits of R, followed by n bits of G, B and U (as
-appropriate). If the number of bits is not a multiple of 8, it will be
-right-padded with zeroes.
 -->