6697544cdf
It's designed to minimize RAM footprint by using Sprites to represent objects on the screen. The object model also facilitates partial screen updating which reduces the bandwidth needed to display. This is all handled in C. Python simply manipulates the objects with the ability to synchronize to frame timing.
119 lines
4.9 KiB
C
119 lines
4.9 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "shared-bindings/displayio/FourWire.h"
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#include <stdint.h>
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#include "lib/utils/context_manager_helpers.h"
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#include "py/binary.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/util.h"
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#include "supervisor/shared/translate.h"
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//| .. currentmodule:: displayio
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//|
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//| :class:`FourWire` -- Manage updating a display over SPI four wire protocol
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//| ==========================================================================
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//|
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//| Manage updating a display over SPI four wire protocol in the background while Python code runs.
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//| It doesn't handle display initialization.
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//|
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//| .. warning:: This will be changed before 4.0.0. Consider it very experimental.
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//|
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//| .. class:: FourWire(*, clock, data, command, chip_select, width, height, colstart, rowstart,
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//| color_depth, set_column_command, set_row_command, write_ram_command)
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//|
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//| Create a FourWire object associated with the given pins.
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//|
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STATIC mp_obj_t displayio_fourwire_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *pos_args) {
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mp_raise_NotImplementedError(translate("displayio is a work in progress"));
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return mp_const_none;
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}
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//| .. method:: send(command, data)
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//|
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//|
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STATIC mp_obj_t displayio_fourwire_obj_send(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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mp_raise_NotImplementedError(translate("displayio is a work in progress"));
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_KW(displayio_fourwire_send_obj, 1, displayio_fourwire_obj_send);
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//| .. method:: show(group)
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//|
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//| Switches do displaying the given group of elements.
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//|
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STATIC mp_obj_t displayio_fourwire_obj_show(mp_obj_t self_in, mp_obj_t group_in) {
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displayio_fourwire_obj_t *self = MP_OBJ_TO_PTR(self_in);
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displayio_group_t* group = MP_OBJ_TO_PTR(group_in);
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common_hal_displayio_fourwire_show(self, group);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(displayio_fourwire_show_obj, displayio_fourwire_obj_show);
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//| .. method:: refresh_soon()
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//|
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//| Queues up a display refresh that happens in the background.
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//|
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STATIC mp_obj_t displayio_fourwire_obj_refresh_soon(mp_obj_t self_in) {
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displayio_fourwire_obj_t *self = MP_OBJ_TO_PTR(self_in);
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common_hal_displayio_fourwire_refresh_soon(self);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(displayio_fourwire_refresh_soon_obj, displayio_fourwire_obj_refresh_soon);
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//| .. method:: wait_for_frame()
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//|
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//| Waits until the next frame has been transmitted to the display unless the wait count is
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//| behind the rendered frames. In that case, this will return immediately with the wait count.
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//|
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STATIC mp_obj_t displayio_fourwire_obj_wait_for_frame(mp_obj_t self_in) {
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displayio_fourwire_obj_t *self = MP_OBJ_TO_PTR(self_in);
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return MP_OBJ_NEW_SMALL_INT(common_hal_displayio_fourwire_wait_for_frame(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(displayio_fourwire_wait_for_frame_obj, displayio_fourwire_obj_wait_for_frame);
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STATIC const mp_rom_map_elem_t displayio_fourwire_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_send), MP_ROM_PTR(&displayio_fourwire_send_obj) },
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{ MP_ROM_QSTR(MP_QSTR_show), MP_ROM_PTR(&displayio_fourwire_show_obj) },
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{ MP_ROM_QSTR(MP_QSTR_refresh_soon), MP_ROM_PTR(&displayio_fourwire_refresh_soon_obj) },
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{ MP_ROM_QSTR(MP_QSTR_wait_for_frame), MP_ROM_PTR(&displayio_fourwire_wait_for_frame_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(displayio_fourwire_locals_dict, displayio_fourwire_locals_dict_table);
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const mp_obj_type_t displayio_fourwire_type = {
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{ &mp_type_type },
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.name = MP_QSTR_FourWire,
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.make_new = displayio_fourwire_make_new,
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.locals_dict = (mp_obj_dict_t*)&displayio_fourwire_locals_dict,
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};
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