This is only really useful for applications that use DrawRGBBitmap8. The
RGB444 format has fewer colors, but can be up to 25% faster than the
default RGB565.
I have tested this change on the Gopher Badge and the PineTime. Both can
be substantially faster once the code is modified to output RGB444
instead of RGB565.
It is needed to control the chip select pin when the st7789 display is
wired together with some other SPI device on the same bus, for example
if it shares the bus with SPI flash.
This required some refactoring of the code to correctly set the CS pin
everywhere. Notably, this removes the public Command, Data, Tx, and Rx
methods which poke into private details of the st7789 driver and are
therefore best hidden in my opinion.
* Unify the Rotation type, so that SetRotation can be used in
interfaces.
* Add Rotation() method to these displays, so that the current
rotation can be read.
* Change SetRotation() so that it can return an error (if the given
rotation isn't supported).
The API looks like this and is based on the PCA9685 PWM chip:
Sleep(sleepEnabled bool) error
It will set the LCD panel to a low power state (not displaying any
image) but memory contents will be preserved.
Heap allocations can result in significant and unpredictable slowdowns.
For example, they can take over 10ms on the Gopher Badge, which results
in visible tearing (when tearing is otherwise avoided).
Some displays need other values than the default to look right.
Therefore, add a configuration option to set the gamma table for a
particular LCD panel.
- FrameRate option sets device framerates from 39-111Hz
- VSyncLines option adjusts device vsync pause using st7789 "porch control" feature
- Added Rx(cmd, bytes[]) to support retrieving scanline timing data over SPI
- Added Sync functions to support syncronization of animation to vertical scanline timing
- Minor adjustments to Configure to clear screen memory before display is visible
* Fix setWindow bug, add CS pin for Clue compatibility.
- corrected bit shift in setWindow that broke high addresses
- added csPin to constructor (will now work with adafruit clue)
- small adjustments and comments to init routine based on working arduino driver
* Update main.go
Updated test example with CS pin.
* Reverting unnecessary (no-effect) change in setRotation.
Ayke van Laethem
Daniel Esteban
deadprogram
Jason Striegel
Alexander Bloss
Daniel Esteban