/* * This file is part of the Micro Python 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 "shared-bindings/displayio/Display.h" #include #include "lib/utils/context_manager_helpers.h" #include "py/binary.h" #include "py/objproperty.h" #include "py/runtime.h" #include "shared-bindings/displayio/Group.h" #include "shared-bindings/microcontroller/Pin.h" #include "shared-bindings/util.h" #include "shared-module/displayio/__init__.h" #include "supervisor/shared/translate.h" //| .. currentmodule:: displayio //| //| :class:`Display` -- Manage updating a display over a display bus //| ========================================================================== //| //| This initializes a display and connects it into CircuitPython. Unlike other //| objects in CircuitPython, Display objects live until `displayio.release_displays()` //| is called. This is done so that CircuitPython can use the display itself. //| //| Most people should not use this class directly. Use a specific display driver instead that will //| contain the initialization sequence at minimum. //| //| .. class:: Display(display_bus, init_sequence, *, width, height, colstart=0, rowstart=0, rotation=0, color_depth=16, set_column_command=0x2a, set_row_command=0x2b, write_ram_command=0x2c, set_vertical_scroll=0, backlight_pin=None) //| //| Create a Display object on the given display bus (`displayio.FourWire` or `displayio.ParallelBus`). //| //| The ``init_sequence`` is bitpacked to minimize the ram impact. Every command begins with a //| command byte followed by a byte to determine the parameter count and if a delay is need after. //| When the top bit of the second byte is 1, the next byte will be the delay time in milliseconds. //| The remaining 7 bits are the parameter count excluding any delay byte. The third through final //| bytes are the remaining command parameters. The next byte will begin a new command definition. //| Here is a portion of ILI9341 init code: //| //| .. code-block:: python //| //| init_sequence = (b"\xe1\x0f\x00\x0E\x14\x03\x11\x07\x31\xC1\x48\x08\x0F\x0C\x31\x36\x0F" # Set Gamma //| b"\x11\x80\x78"# Exit Sleep then delay 0x78 (120ms) //| b"\x29\x80\x78"# Display on then delay 0x78 (120ms) //| ) //| display = displayio.Display(display_bus, init_sequence, width=320, height=240) //| //| The first command is 0xe1 with 15 (0xf) parameters following. The second and third are 0x11 and //| 0x29 respectively with delays (0x80) of 120ms (0x78) and no parameters. Multiple byte literals //| (b"") are merged together on load. The parens are needed to allow byte literals on subsequent //| lines. //| //| The initialization sequence should always leave the display memory access inline with the scan //| of the display to minimize tearing artifacts. //| //| :param displayio.FourWire or displayio.ParallelBus display_bus: The bus that the display is connected to //| :param buffer init_sequence: Byte-packed initialization sequence. //| :param int width: Width in pixels //| :param int height: Height in pixels //| :param int colstart: The index if the first visible column //| :param int rowstart: The index if the first visible row //| :param int rotation: The rotation of the display in degrees clockwise. Must be in 90 degree increments (0, 90, 180, 270) //| :param int color_depth: The number of bits of color per pixel transmitted. (Some displays //| support 18 bit but 16 is easier to transmit. The last bit is extrapolated.) //| :param int set_column_command: Command used to set the start and end columns to update //| :param int set_row_command: Command used so set the start and end rows to update //| :param int write_ram_command: Command used to write pixels values into the update region //| :param int set_vertical_scroll: Command used to set the first row to show //| :param microcontroller.Pin backlight_pin: Pin connected to the display's backlight //| 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) { enum { ARG_display_bus, ARG_init_sequence, ARG_width, ARG_height, ARG_colstart, ARG_rowstart, ARG_rotation, ARG_color_depth, ARG_set_column_command, ARG_set_row_command, ARG_write_ram_command, ARG_set_vertical_scroll, ARG_backlight_pin }; static const mp_arg_t allowed_args[] = { { MP_QSTR_display_bus, MP_ARG_REQUIRED | MP_ARG_OBJ }, { MP_QSTR_init_sequence, MP_ARG_REQUIRED | MP_ARG_OBJ }, { MP_QSTR_width, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, }, { MP_QSTR_height, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, }, { MP_QSTR_colstart, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0} }, { MP_QSTR_rowstart, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0} }, { MP_QSTR_rotation, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0} }, { MP_QSTR_color_depth, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 16} }, { MP_QSTR_set_column_command, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x2a} }, { MP_QSTR_set_row_command, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x2b} }, { MP_QSTR_write_ram_command, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x2c} }, { MP_QSTR_set_vertical_scroll, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0x0} }, { MP_QSTR_backlight_pin, MP_ARG_OBJ | MP_ARG_KW_ONLY, {.u_obj = mp_const_none} }, }; mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); mp_obj_t display_bus = args[ARG_display_bus].u_obj; mp_buffer_info_t bufinfo; mp_get_buffer_raise(args[ARG_init_sequence].u_obj, &bufinfo, MP_BUFFER_READ); mp_obj_t backlight_pin_obj = args[ARG_backlight_pin].u_obj; assert_pin(backlight_pin_obj, true); const mcu_pin_obj_t* backlight_pin = NULL; if (backlight_pin_obj != NULL && backlight_pin_obj != mp_const_none) { backlight_pin = MP_OBJ_TO_PTR(backlight_pin_obj); assert_pin_free(backlight_pin); } mp_int_t rotation = args[ARG_rotation].u_int; if (rotation % 90 != 0) { mp_raise_ValueError(translate("Display rotation must be in 90 degree increments")); } displayio_display_obj_t *self = NULL; for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) { if (displays[i].display.base.type == NULL || displays[i].display.base.type == &mp_type_NoneType) { self = &displays[i].display; break; } } if (self == NULL) { mp_raise_RuntimeError(translate("Too many displays")); } self->base.type = &displayio_display_type; common_hal_displayio_display_construct(self, display_bus, args[ARG_width].u_int, args[ARG_height].u_int, args[ARG_colstart].u_int, args[ARG_rowstart].u_int, rotation, args[ARG_color_depth].u_int, args[ARG_set_column_command].u_int, args[ARG_set_row_command].u_int, args[ARG_write_ram_command].u_int, args[ARG_set_vertical_scroll].u_int, bufinfo.buf, bufinfo.len, MP_OBJ_TO_PTR(backlight_pin)); return self; } //| .. method:: show(group) //| //| Switches to displaying the given group of layers. When group is None, the default //| CircuitPython terminal will be shown. //| STATIC mp_obj_t displayio_display_obj_show(mp_obj_t self_in, mp_obj_t group_in) { displayio_display_obj_t *self = MP_OBJ_TO_PTR(self_in); displayio_group_t* group = NULL; if (group_in != mp_const_none) { mp_obj_t native_layer = mp_instance_cast_to_native_base(group_in, &displayio_group_type); if (native_layer == MP_OBJ_NULL) { mp_raise_ValueError(translate("Must be a Group subclass.")); } group = MP_OBJ_TO_PTR(native_layer); } common_hal_displayio_display_show(self, group); return mp_const_none; } MP_DEFINE_CONST_FUN_OBJ_2(displayio_display_show_obj, displayio_display_obj_show); //| .. method:: refresh_soon() //| //| Queues up a display refresh that happens in the background. //| STATIC mp_obj_t displayio_display_obj_refresh_soon(mp_obj_t self_in) { displayio_display_obj_t *self = MP_OBJ_TO_PTR(self_in); common_hal_displayio_display_refresh_soon(self); return mp_const_none; } MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_refresh_soon_obj, displayio_display_obj_refresh_soon); //| .. method:: wait_for_frame() //| //| Waits until the next frame has been transmitted to the display unless the wait count is //| behind the rendered frames. In that case, this will return immediately with the wait count. //| STATIC mp_obj_t displayio_display_obj_wait_for_frame(mp_obj_t self_in) { displayio_display_obj_t *self = MP_OBJ_TO_PTR(self_in); return MP_OBJ_NEW_SMALL_INT(common_hal_displayio_display_wait_for_frame(self)); } MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_wait_for_frame_obj, displayio_display_obj_wait_for_frame); //| .. attribute:: brightness //| //| The brightness of the display as a float. 0.0 is off and 1.0 is full brightness. When //| `auto_brightness` is True this value will change automatically and setting it will have no //| effect. To control the brightness, auto_brightness must be false. //| STATIC mp_obj_t displayio_display_obj_get_brightness(mp_obj_t self_in) { displayio_display_obj_t *self = MP_OBJ_TO_PTR(self_in); mp_float_t brightness = common_hal_displayio_display_get_brightness(self); if (brightness < 0) { mp_raise_RuntimeError(translate("Brightness not adjustable")); } return mp_obj_new_float(brightness); } MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_get_brightness_obj, displayio_display_obj_get_brightness); STATIC mp_obj_t displayio_display_obj_set_brightness(mp_obj_t self_in, mp_obj_t brightness) { displayio_display_obj_t *self = MP_OBJ_TO_PTR(self_in); bool ok = common_hal_displayio_display_set_brightness(self, mp_obj_get_float(brightness)); if (!ok) { mp_raise_RuntimeError(translate("Brightness not adjustable")); } return mp_const_none; } MP_DEFINE_CONST_FUN_OBJ_2(displayio_display_set_brightness_obj, displayio_display_obj_set_brightness); const mp_obj_property_t displayio_display_brightness_obj = { .base.type = &mp_type_property, .proxy = {(mp_obj_t)&displayio_display_get_brightness_obj, (mp_obj_t)&displayio_display_set_brightness_obj, (mp_obj_t)&mp_const_none_obj}, }; //| .. attribute:: auto_brightness //| //| True when the display brightness is auto adjusted. //| STATIC mp_obj_t displayio_display_obj_get_auto_brightness(mp_obj_t self_in) { displayio_display_obj_t *self = MP_OBJ_TO_PTR(self_in); return mp_obj_new_bool(common_hal_displayio_display_get_auto_brightness(self)); } MP_DEFINE_CONST_FUN_OBJ_1(displayio_display_get_auto_brightness_obj, displayio_display_obj_get_auto_brightness); STATIC mp_obj_t displayio_display_obj_set_auto_brightness(mp_obj_t self_in, mp_obj_t auto_brightness) { displayio_display_obj_t *self = MP_OBJ_TO_PTR(self_in); common_hal_displayio_display_set_auto_brightness(self, mp_obj_is_true(auto_brightness)); return mp_const_none; } MP_DEFINE_CONST_FUN_OBJ_2(displayio_display_set_auto_brightness_obj, displayio_display_obj_set_auto_brightness); const mp_obj_property_t displayio_display_auto_brightness_obj = { .base.type = &mp_type_property, .proxy = {(mp_obj_t)&displayio_display_get_auto_brightness_obj, (mp_obj_t)&displayio_display_set_auto_brightness_obj, (mp_obj_t)&mp_const_none_obj}, }; STATIC const mp_rom_map_elem_t displayio_display_locals_dict_table[] = { { MP_ROM_QSTR(MP_QSTR_show), MP_ROM_PTR(&displayio_display_show_obj) }, { MP_ROM_QSTR(MP_QSTR_refresh_soon), MP_ROM_PTR(&displayio_display_refresh_soon_obj) }, { MP_ROM_QSTR(MP_QSTR_wait_for_frame), MP_ROM_PTR(&displayio_display_wait_for_frame_obj) }, { MP_ROM_QSTR(MP_QSTR_brightness), MP_ROM_PTR(&displayio_display_brightness_obj) }, { MP_ROM_QSTR(MP_QSTR_auto_brightness), MP_ROM_PTR(&displayio_display_auto_brightness_obj) }, }; STATIC MP_DEFINE_CONST_DICT(displayio_display_locals_dict, displayio_display_locals_dict_table); const mp_obj_type_t displayio_display_type = { { &mp_type_type }, .name = MP_QSTR_Display, .make_new = displayio_display_make_new, .locals_dict = (mp_obj_dict_t*)&displayio_display_locals_dict, };