circuitpython/shared-bindings/displayio/__init__.c
Scott Shawcroft 6797ec6ed3
Add support for grayscale displays that are < 8 bit depth.
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
2019-07-19 16:06:11 -07:00

113 lines
4.4 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdint.h>
#include "py/obj.h"
#include "py/runtime.h"
#include "shared-bindings/displayio/__init__.h"
#include "shared-bindings/displayio/Bitmap.h"
#include "shared-bindings/displayio/ColorConverter.h"
#include "shared-bindings/displayio/Display.h"
#include "shared-bindings/displayio/FourWire.h"
#include "shared-bindings/displayio/Group.h"
#include "shared-bindings/displayio/I2CDisplay.h"
#include "shared-bindings/displayio/OnDiskBitmap.h"
#include "shared-bindings/displayio/Palette.h"
#include "shared-bindings/displayio/ParallelBus.h"
#include "shared-bindings/displayio/Shape.h"
#include "shared-bindings/displayio/TileGrid.h"
//| :mod:`displayio` --- Native display driving
//| =========================================================================
//|
//| .. module:: displayio
//| :synopsis: Native helpers for driving displays
//| :platform: SAMD21, SAMD51, nRF52
//|
//| The `displayio` module contains classes to manage display output
//| including synchronizing with refresh rates and partial updating.
//|
//| Libraries
//|
//| .. toctree::
//| :maxdepth: 3
//|
//| Bitmap
//| ColorConverter
//| Display
//| FourWire
//| Group
//| I2CDisplay
//| OnDiskBitmap
//| Palette
//| ParallelBus
//| Shape
//| TileGrid
//|
//| .. function:: release_displays()
//|
//| Releases any actively used displays so their busses and pins can be used again. This will also
//| release the builtin display on boards that have one. You will need to reinitialize it yourself
//| afterwards.
//|
//| Use this once in your code.py if you initialize a display. Place it right before the
//| initialization so the display is active as long as possible.
//|
STATIC mp_obj_t displayio_release_displays(void) {
common_hal_displayio_release_displays();
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_0(displayio_release_displays_obj, displayio_release_displays);
STATIC const mp_rom_map_elem_t displayio_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_displayio) },
{ MP_ROM_QSTR(MP_QSTR_Bitmap), MP_ROM_PTR(&displayio_bitmap_type) },
{ MP_ROM_QSTR(MP_QSTR_ColorConverter), MP_ROM_PTR(&displayio_colorconverter_type) },
{ MP_ROM_QSTR(MP_QSTR_Display), MP_ROM_PTR(&displayio_display_type) },
{ MP_ROM_QSTR(MP_QSTR_Group), MP_ROM_PTR(&displayio_group_type) },
{ MP_ROM_QSTR(MP_QSTR_OnDiskBitmap), MP_ROM_PTR(&displayio_ondiskbitmap_type) },
{ MP_ROM_QSTR(MP_QSTR_Palette), MP_ROM_PTR(&displayio_palette_type) },
{ MP_ROM_QSTR(MP_QSTR_Shape), MP_ROM_PTR(&displayio_shape_type) },
{ MP_ROM_QSTR(MP_QSTR_TileGrid), MP_ROM_PTR(&displayio_tilegrid_type) },
{ MP_ROM_QSTR(MP_QSTR_FourWire), MP_ROM_PTR(&displayio_fourwire_type) },
{ MP_ROM_QSTR(MP_QSTR_I2CDisplay), MP_ROM_PTR(&displayio_i2cdisplay_type) },
{ MP_ROM_QSTR(MP_QSTR_ParallelBus), MP_ROM_PTR(&displayio_parallelbus_type) },
{ MP_ROM_QSTR(MP_QSTR_release_displays), MP_ROM_PTR(&displayio_release_displays_obj) },
};
STATIC MP_DEFINE_CONST_DICT(displayio_module_globals, displayio_module_globals_table);
const mp_obj_module_t displayio_module = {
.base = { &mp_type_module },
.globals = (mp_obj_dict_t*)&displayio_module_globals,
};