Difference between revisions of "LaserBox/Formats and Protocols"
From Hackstrich
(Adding Load Pixel & Refresh command, for use in Live Mode.) |
(Changing Load Pixel & Refresh to pack all data into one byte instead of using 4 where 1 would do.) |
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*** Parameter 2 - 6 bytes - Pixel data (each byte is one row, last two bits of each byte are ignored) | *** Parameter 2 - 6 bytes - Pixel data (each byte is one row, last two bits of each byte are ignored) | ||
** 0x03 - Load Pixel & Refresh - Load pixel data into a single pixel, then refresh all planes. | ** 0x03 - Load Pixel & Refresh - Load pixel data into a single pixel, then refresh all planes. | ||
| − | *** Parameter | + | *** Parameter 1a - 1 bit (MSB) - Plane to load (0 = ZY, 1 = XY) |
| − | *** Parameter | + | *** Parameter 1a - 3 bits - Row to load |
| − | *** Parameter 3 - | + | *** Parameter 1a - 3 bits - Column to load |
| − | *** Parameter | + | *** Parameter 1a - 1 bit (LSB) - Pixel state |
** 0x04 - Refresh All Planes - Push loaded pixel data from the hold registers to the laser outputs. | ** 0x04 - Refresh All Planes - Push loaded pixel data from the hold registers to the laser outputs. | ||
** 0xFF - Exit Interpreter - If encountered in a file, cease parsing at that point. If in a live serial stream, drop out of live mode. | ** 0xFF - Exit Interpreter - If encountered in a file, cease parsing at that point. If in a live serial stream, drop out of live mode. | ||
Revision as of 00:31, 17 March 2017
This page documents the formats and protocols used in the LaserBox project.
Contents
Filesystem Layout
The patterns are stored on an SD card, formatted as FAT16.
Overview
- Root directory holds one directory for each gesture
- Under each gesture directory, there are numbered pattern files that are chosen randomly each time
- Root directory also holds LASERBOX.LOG which is written to when any events happen
Example
- UP
- 1.PAT
- 2.PAT
- 3.PAT
- DOWN
- 1.PAT
- LEFT
- 1.PAT
- 2.PAT
- RIGHT
- 1.PAT
- 2.PAT
- 3.PAT
- 4.PAT
- LASERBOX.LOG
Pattern File Format v1
This is the first version of the pattern file format, which is currently in use as of 2017-03-16. Pattern files consist of the following:
- Number of frames in file (one byte)
- Frame data for first frame (12 bytes, 6 per plane)
- Frame data for second frame (12 bytes, 6 per plane)
- ...
- Frame data for last frame (12 bytes, 6 per plane)
Pattern File Format v2
This is the planned next version of the pattern file format, to be implemented soon if time allows. Pattern files consist of the followng:
- Magic string 'PATv2'
- One or more of the following blocks:
- 0x00 - NoOp - Do nothing, continue on.
- 0x01 - Delay - Wait a certain amount of time before continuing on.
- Parameter 1 - 1 byte - Number of milliseconds * 10 to delay (i.e. 25 = 250ms)
- 0x02 - Load Plane - Load pixel data into a given plane.
- Parameter 1 - 1 byte - Plane to load (0 = ZY, 1 = XY)
- Parameter 2 - 6 bytes - Pixel data (each byte is one row, last two bits of each byte are ignored)
- 0x03 - Load Pixel & Refresh - Load pixel data into a single pixel, then refresh all planes.
- Parameter 1a - 1 bit (MSB) - Plane to load (0 = ZY, 1 = XY)
- Parameter 1a - 3 bits - Row to load
- Parameter 1a - 3 bits - Column to load
- Parameter 1a - 1 bit (LSB) - Pixel state
- 0x04 - Refresh All Planes - Push loaded pixel data from the hold registers to the laser outputs.
- 0xFF - Exit Interpreter - If encountered in a file, cease parsing at that point. If in a live serial stream, drop out of live mode.
