155 lines
6.9 KiB
C
155 lines
6.9 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/Display.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/displayio/Group.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 "shared-module/displayio/__init__.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:`Display` -- Manage updating a display over a display bus
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//| ==========================================================================
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//|
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//| This initializes a display and connects it into CircuitPython. Unlike other
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//| objects in CircuitPython, Display objects live until `displayio.release_displays()`
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//| is called. This is done so that CircuitPython can use the display itself.
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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:: Display(display_bus, *, width, height, colstart=0, rowstart=0, color_depth=16,
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//| set_column_command=0x2a set_row_command=0x2b, write_ram_command=0x2c)
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//|
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//| Create a Display object.
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//|
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STATIC mp_obj_t displayio_display_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_display_bus, ARG_init_sequence, ARG_width, ARG_height, ARG_colstart, ARG_rowstart, ARG_color_depth, ARG_set_column_command, ARG_set_row_command, ARG_write_ram_command };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_display_bus, MP_ARG_REQUIRED | MP_ARG_OBJ },
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{ MP_QSTR_init_sequence, MP_ARG_REQUIRED | MP_ARG_OBJ },
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{ MP_QSTR_width, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = -1} },
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{ MP_QSTR_height, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = -1} },
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{ MP_QSTR_colstart, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0} },
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{ MP_QSTR_rowstart, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0} },
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{ MP_QSTR_color_depth, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 16} },
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{ MP_QSTR_set_column_command, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x2a} },
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{ MP_QSTR_set_row_command, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x2b} },
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{ MP_QSTR_write_ram_command, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x2c} },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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mp_obj_t display_bus = args[ARG_display_bus].u_obj;
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mp_int_t width = args[ARG_width].u_int;
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mp_int_t height = args[ARG_height].u_int;
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if (width == -1 || height == -1) {
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mp_raise_ValueError(translate("Width and height kwargs required"));
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}
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(args[ARG_init_sequence].u_obj, &bufinfo, MP_BUFFER_READ);
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displayio_display_obj_t *self = NULL;
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for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
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if (displays[i].display.base.type == NULL) {
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self = &displays[i].display;
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break;
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}
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}
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if (self == NULL) {
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mp_raise_RuntimeError(translate("Display limit reached"));
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}
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self->base.type = &displayio_display_type;
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common_hal_displayio_display_construct(self,
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display_bus, width, height, args[ARG_colstart].u_int, args[ARG_rowstart].u_int,
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args[ARG_color_depth].u_int, args[ARG_set_column_command].u_int, args[ARG_set_row_command].u_int,
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args[ARG_write_ram_command].u_int, bufinfo.buf, bufinfo.len);
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return self;
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}
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//| .. method:: show(group)
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//|
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//| Switches to displaying the given group of layers.
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//|
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STATIC mp_obj_t displayio_display_obj_show(mp_obj_t self_in, mp_obj_t group_in) {
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displayio_display_obj_t *self = MP_OBJ_TO_PTR(self_in);
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mp_obj_t native_layer = mp_instance_cast_to_native_base(group_in, &displayio_group_type);
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if (native_layer == MP_OBJ_NULL) {
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mp_raise_ValueError(translate("Must be a Group subclass."));
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}
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displayio_group_t* group = MP_OBJ_TO_PTR(native_layer);
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common_hal_displayio_display_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_display_show_obj, displayio_display_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_display_obj_refresh_soon(mp_obj_t self_in) {
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displayio_display_obj_t *self = MP_OBJ_TO_PTR(self_in);
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common_hal_displayio_display_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_display_refresh_soon_obj, displayio_display_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_display_obj_wait_for_frame(mp_obj_t self_in) {
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displayio_display_obj_t *self = MP_OBJ_TO_PTR(self_in);
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return MP_OBJ_NEW_SMALL_INT(common_hal_displayio_display_wait_for_frame(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_wait_for_frame_obj, displayio_display_obj_wait_for_frame);
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STATIC const mp_rom_map_elem_t displayio_display_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_show), MP_ROM_PTR(&displayio_display_show_obj) },
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{ MP_ROM_QSTR(MP_QSTR_refresh_soon), MP_ROM_PTR(&displayio_display_refresh_soon_obj) },
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{ MP_ROM_QSTR(MP_QSTR_wait_for_frame), MP_ROM_PTR(&displayio_display_wait_for_frame_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(displayio_display_locals_dict, displayio_display_locals_dict_table);
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const mp_obj_type_t displayio_display_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Display,
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.make_new = displayio_display_make_new,
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.locals_dict = (mp_obj_dict_t*)&displayio_display_locals_dict,
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};
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