Snekboard does not expose any pins for SPI to the user, so delete
the SPI object reference as that won't work.
Signed-off-by: Keith Packard <keithp@keithp.com>
Snekboard has been assigned the following PIDs:
PID 0x004D # bootloader
PID 0x804D # arduino
PID 0x804E # circuitpython
Signed-off-by: Keith Packard <keithp@keithp.com>
This is another SAMDG2118A design with built-in 9V motor controllers
that are designed to be used with Lego PowerFunctions devices.
Signed-off-by: Keith Packard <keithp@keithp.com>
This also improves Palette so it stores the original RGB888 colors.
Lastly, it adds I2CDisplay as a display bus to talk over I2C. Particularly
useful for the SSD1306.
Fixes#1828. Fixes#1956
I designed this really tiny, minimalist font for use on very small
displays. On uGame it lets one see the whole text that CircuitPython
prints on boot. The characters are 4x6 pixels each, and they are
optimized for legibility (large x-height, right angles, blocky shapes).
It might make sense to also use that font in other boards.
Different operations to the display tree have different costs. Be
aware of these costs when optimizing your code.
* Changing tiles indices in a TileGrid will update an area
covering them all.
* Changing a palette will refresh every object that references it.
* Moving a TileGrid will update both where it was and where it moved to.
* Adding something to a Group will refresh each individual area it
covers.
* Removing things from a Group will refresh one area that covers all
previous locations. (Not separate areas like add.)
* Setting a new top level Group will refresh the entire display.
Only TileGrid moves are optimized for overlap. All other overlaps
cause sending of duplicate pixels.
This also adds flip_x, flip_y and transpose_xy to TileGrid. They
change the direction of the pixels but not the location.
Fixes#1169. Fixes#1705. Fixes#1923.
