373 lines
20 KiB
C
373 lines
20 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) 2023 Jeff Epler 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/dotclockframebuffer/DotClockFramebuffer.h"
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#include "py/binary.h"
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#include "py/objarray.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 "shared-module/displayio/__init__.h"
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#include "supervisor/shared/translate/translate.h"
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//| class DotClockFramebuffer:
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//| """Manage updating a 'dot-clock' framebuffer 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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//| def __init__(
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//| self,
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//| *,
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//| de: microcontroller.Pin,
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//| vsync: microcontroller.Pin,
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//| hsync: microcontroller.Pin,
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//| dclk: microcontroller.Pin,
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//| red: Tuple[microcontroller.Pin],
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//| green: Tuple[microcontroller.Pin],
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//| blue: Tuple[microcontroller.Pin],
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//| frequency: int,
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//| width: int,
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//| height: int,
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//| hsync_pulse_width: int,
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//| hsync_back_porch: int,
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//| hsync_front_porch: int,
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//| hsync_idle_low: bool,
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//| vsync_back_porch: int,
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//| vsync_front_porch: int,
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//| vsync_idle_low: bool,
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//| de_idle_high: bool,
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//| pclk_active_high: bool,
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//| pclk_idle_high: bool,
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//| overscan_left: int = 0,
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//| ) -> None:
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//| """Create a DotClockFramebuffer object associated with the given pins.
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//|
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//| The pins are then in use by the display until `displayio.release_displays()`
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//| is called even after a reload. (It does this so CircuitPython can use the display after your
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//| code is done.) So, the first time you initialize a display bus in code.py you should call
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//| :py:func:`displayio.release_displays` first, otherwise it will error after the first code.py run.
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//|
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//| When a board has dedicated dot clock framebuffer pins and/or timings, they are intended to be used in the constructor with ``**`` dictionary unpacking like so:
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//| ``DotClockFramebuffer(**board.TFT_PINS, **board.TFT_TIMINGS)``
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//|
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//| On Espressif-family microcontrollers, this driver requires that the
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//| ``CIRCUITPY_RESERVED_PSRAM`` in ``settings.toml`` be large enough to hold the
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//| framebuffer. Generally, boards with built-in displays or display connectors
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//| will have a default setting that is large enough for typical use. If the
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//| constructor raises a MemoryError or an IDFError, this probably indicates the
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//| setting is too small and should be increased.
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//|
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//| TFT connection parameters:
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//|
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//| :param microcontroller.Pin de: The "data enable" input to the display
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//| :param microcontroller.Pin vsync: The "vertical sync" input to the display
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//| :param microcontroller.Pin hsync: The "horizontal sync" input to the display
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//| :param microcontroller.Pin dclk: The "data clock" input to the display
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//| :param ~tuple red: The red data pins, most significant pin first.
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//| :param ~tuple green: The green data pins, most significant pin first.
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//| :param ~tuple blue: The blue data pins, most significant pin first.
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//|
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//| TFT timing parameters:
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//|
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//| :param int frequency: The requested data clock frequency in Hz.
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//| :param int width: The visible width of the display, in pixels
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//| :param int height: The visible height of the display, in pixels
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//| :param int hsync_pulse_width: Horizontal sync width in pixels
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//| :param int hsync_back_porch: Horizontal back porch, number of pixels between hsync and start of line active data
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//| :param int hsync_front_porch: Horizontal front porch, number of pixels between the end of active data and the next hsync
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//| :param int vsync_back_porch: Vertical back porch, number of lines between vsync and start of frame
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//| :param int vsync_front_porch: Vertical front porch, number of lines between the end of frame and the next vsync
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//| :param bool hsync_idle_low: True if the hsync signal is low in IDLE state
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//| :param bool vsync_idle_low: True if the vsync signal is low in IDLE state
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//| :param bool de_idle_high: True if the de signal is high in IDLE state
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//| :param bool pclk_active_high: True if the display data is clocked out at the rising edge of dclk
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//| :param bool pclk_idle_high: True if the dclk stays at high level in IDLE phase
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//|
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//| :param int overscan_left: Allocate additional non-visible columns left of the first display column
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//| """
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//| #:param int overscan_top: Allocate additional non-visible rows above the first display row
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//| #:param int overscan_right: Allocate additional non-visible columns right of the last display column
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//| #:param int overscan_bottom: Allocate additional non-visible rows below the last display row
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//| ...
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STATIC mp_obj_t dotclockframebuffer_framebuffer_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
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enum { ARG_de, ARG_vsync, ARG_hsync, ARG_dclk, ARG_red, ARG_green, ARG_blue,
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ARG_frequency, ARG_width, ARG_height,
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ARG_hsync_pulse_width, ARG_hsync_back_porch, ARG_hsync_front_porch, ARG_hsync_idle_low,
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ARG_vsync_pulse_width, ARG_vsync_back_porch, ARG_vsync_front_porch, ARG_vsync_idle_low,
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ARG_de_idle_high, ARG_pclk_active_high, ARG_pclk_idle_high,
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ARG_overscan_left};
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_de, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } },
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{ MP_QSTR_vsync, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } },
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{ MP_QSTR_hsync, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } },
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{ MP_QSTR_dclk, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } },
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{ MP_QSTR_red, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } },
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{ MP_QSTR_green, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } },
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{ MP_QSTR_blue, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } },
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{ MP_QSTR_frequency, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } },
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{ MP_QSTR_width, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } },
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{ MP_QSTR_height, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } },
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{ MP_QSTR_hsync_pulse_width, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } },
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{ MP_QSTR_hsync_back_porch, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } },
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{ MP_QSTR_hsync_front_porch, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } },
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{ MP_QSTR_hsync_idle_low, MP_ARG_BOOL | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_bool = false } },
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{ MP_QSTR_vsync_pulse_width, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } },
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{ MP_QSTR_vsync_back_porch, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } },
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{ MP_QSTR_vsync_front_porch, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } },
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{ MP_QSTR_vsync_idle_low, MP_ARG_BOOL | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_bool = false } },
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{ MP_QSTR_de_idle_high, MP_ARG_BOOL | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_bool = false } },
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{ MP_QSTR_pclk_active_high, MP_ARG_BOOL | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_bool = false } },
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{ MP_QSTR_pclk_idle_high, MP_ARG_BOOL | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_bool = false } },
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{ MP_QSTR_overscan_left, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0 } },
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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_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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const mcu_pin_obj_t *de = validate_obj_is_free_pin(args[ARG_de].u_obj, MP_QSTR_de);
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const mcu_pin_obj_t *vsync = validate_obj_is_free_pin(args[ARG_vsync].u_obj, MP_QSTR_vsync);
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const mcu_pin_obj_t *hsync = validate_obj_is_free_pin(args[ARG_hsync].u_obj, MP_QSTR_hsync);
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const mcu_pin_obj_t *dclk = validate_obj_is_free_pin(args[ARG_dclk].u_obj, MP_QSTR_dclk);
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uint8_t num_red, num_green, num_blue;
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const mcu_pin_obj_t *red_pins[8], *green_pins[8], *blue_pins[8];
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validate_list_is_free_pins(MP_QSTR_red, red_pins, (mp_int_t)MP_ARRAY_SIZE(red_pins), args[ARG_red].u_obj, &num_red);
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validate_list_is_free_pins(MP_QSTR_green, green_pins, (mp_int_t)MP_ARRAY_SIZE(green_pins), args[ARG_green].u_obj, &num_green);
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validate_list_is_free_pins(MP_QSTR_blue, blue_pins, (mp_int_t)MP_ARRAY_SIZE(blue_pins), args[ARG_blue].u_obj, &num_blue);
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mp_printf(&mp_plat_print, "#red=%d #green=%d #blue=%d\n", num_red, num_green, num_blue);
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dotclockframebuffer_framebuffer_obj_t *self = &allocate_display_bus_or_raise()->dotclock;
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self->base.type = &dotclockframebuffer_framebuffer_type;
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common_hal_dotclockframebuffer_framebuffer_construct(
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self, de, vsync, hsync, dclk, red_pins, num_red, green_pins, num_green, blue_pins, num_blue,
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args[ARG_frequency].u_int, args[ARG_width].u_int, args[ARG_height].u_int,
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args[ARG_hsync_pulse_width].u_int, args[ARG_hsync_back_porch].u_int, args[ARG_hsync_front_porch].u_int, args[ARG_hsync_idle_low].u_bool,
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args[ARG_vsync_pulse_width].u_int, args[ARG_vsync_back_porch].u_int, args[ARG_vsync_front_porch].u_int, args[ARG_vsync_idle_low].u_bool,
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args[ARG_de_idle_high].u_bool,
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args[ARG_pclk_active_high].u_bool,
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args[ARG_pclk_idle_high].u_bool,
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args[ARG_overscan_left].u_int
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);
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return self;
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}
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static void check_for_deinit(dotclockframebuffer_framebuffer_obj_t *self) {
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if (common_hal_dotclockframebuffer_framebuffer_deinitialized(self)) {
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raise_deinited_error();
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}
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}
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//| def refresh(self) -> None:
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//| """Transmits the color data in the buffer to the pixels so that
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//| they are shown.
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//|
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//| If this function is not called, the results are unpredictable; updates may be partially shown.
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//| """
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//| ...
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STATIC mp_obj_t dotclockframebuffer_framebuffer_refresh(mp_obj_t self_in) {
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dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in;
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check_for_deinit(self);
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common_hal_dotclockframebuffer_framebuffer_refresh(self);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_refresh_obj, dotclockframebuffer_framebuffer_refresh);
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//| refresh_rate: float
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//| """The pixel refresh rate of the display, in Hz"""
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STATIC mp_obj_t dotclockframebuffer_framebuffer_get_refresh_rate(mp_obj_t self_in) {
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dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in;
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check_for_deinit(self);
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return MP_OBJ_NEW_SMALL_INT(common_hal_dotclockframebuffer_framebuffer_get_refresh_rate(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_get_refresh_rate_obj, dotclockframebuffer_framebuffer_get_refresh_rate);
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MP_PROPERTY_GETTER(dotclockframebuffer_framebuffer_refresh_rate_obj,
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(mp_obj_t)&dotclockframebuffer_framebuffer_get_refresh_rate_obj);
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//| frequency: int
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//| """The pixel frequency of the display, in Hz"""
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STATIC mp_obj_t dotclockframebuffer_framebuffer_get_frequency(mp_obj_t self_in) {
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dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in;
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check_for_deinit(self);
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return MP_OBJ_NEW_SMALL_INT(common_hal_dotclockframebuffer_framebuffer_get_frequency(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_get_frequency_obj, dotclockframebuffer_framebuffer_get_frequency);
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MP_PROPERTY_GETTER(dotclockframebuffer_framebuffer_frequency_obj,
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(mp_obj_t)&dotclockframebuffer_framebuffer_get_frequency_obj);
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//| width: int
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//| """The width of the display, in pixels"""
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STATIC mp_obj_t dotclockframebuffer_framebuffer_get_width(mp_obj_t self_in) {
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dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in;
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check_for_deinit(self);
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return MP_OBJ_NEW_SMALL_INT(common_hal_dotclockframebuffer_framebuffer_get_width(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_get_width_obj, dotclockframebuffer_framebuffer_get_width);
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MP_PROPERTY_GETTER(dotclockframebuffer_framebuffer_width_obj,
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(mp_obj_t)&dotclockframebuffer_framebuffer_get_width_obj);
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//| height: int
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//| """The height of the display, in pixels"""
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//|
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STATIC mp_obj_t dotclockframebuffer_framebuffer_get_height(mp_obj_t self_in) {
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dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in;
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check_for_deinit(self);
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return MP_OBJ_NEW_SMALL_INT(common_hal_dotclockframebuffer_framebuffer_get_height(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_get_height_obj, dotclockframebuffer_framebuffer_get_height);
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MP_PROPERTY_GETTER(dotclockframebuffer_framebuffer_height_obj,
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(mp_obj_t)&dotclockframebuffer_framebuffer_get_height_obj);
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//| row_stride: int
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//| """The row_stride of the display, in bytes
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//|
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//| Due to overscan or alignment requirements, the memory address for row N+1 may not be exactly ``2*width`` bytes after the memory address for row N.
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//| This property gives the stride in **bytes**.
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//|
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//| On Espressif this value is **guaranteed** to be a multiple of the 2 (i.e., it is a whole number of pixels)"""
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//|
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STATIC mp_obj_t dotclockframebuffer_framebuffer_get_row_stride(mp_obj_t self_in) {
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dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in;
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check_for_deinit(self);
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return MP_OBJ_NEW_SMALL_INT(common_hal_dotclockframebuffer_framebuffer_get_row_stride(self));
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}
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MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_get_row_stride_obj, dotclockframebuffer_framebuffer_get_row_stride);
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MP_PROPERTY_GETTER(dotclockframebuffer_framebuffer_row_stride_obj,
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(mp_obj_t)&dotclockframebuffer_framebuffer_get_row_stride_obj);
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STATIC mp_int_t dotclockframebuffer_framebuffer_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
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dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in;
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// a readonly framebuffer would be unusual but not impossible
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if ((flags & MP_BUFFER_WRITE) && !(self->bufinfo.typecode & MP_OBJ_ARRAY_TYPECODE_FLAG_RW)) {
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return 1;
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}
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*bufinfo = self->bufinfo;
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bufinfo->typecode = 'H';
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return 0;
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}
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// These version exists so that the prototype matches the protocol,
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// avoiding a type cast that can hide errors
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STATIC void dotclockframebuffer_framebuffer_swapbuffers(mp_obj_t self_in, uint8_t *dirty_row_bitmap) {
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(void)dirty_row_bitmap;
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dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in;
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common_hal_dotclockframebuffer_framebuffer_refresh(self);
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}
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STATIC void dotclockframebuffer_framebuffer_deinit_proto(mp_obj_t self_in) {
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common_hal_dotclockframebuffer_framebuffer_deinit(self_in);
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}
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STATIC float dotclockframebuffer_framebuffer_get_brightness_proto(mp_obj_t self_in) {
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return 1.0f;
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}
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STATIC bool dotclockframebuffer_framebuffer_set_brightness_proto(mp_obj_t self_in, mp_float_t value) {
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return false;
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}
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STATIC int dotclockframebuffer_framebuffer_get_width_proto(mp_obj_t self_in) {
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return common_hal_dotclockframebuffer_framebuffer_get_width(self_in);
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}
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STATIC int dotclockframebuffer_framebuffer_get_height_proto(mp_obj_t self_in) {
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return common_hal_dotclockframebuffer_framebuffer_get_height(self_in);
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}
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STATIC int dotclockframebuffer_framebuffer_get_color_depth_proto(mp_obj_t self_in) {
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return 16;
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}
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STATIC int dotclockframebuffer_framebuffer_get_bytes_per_cell_proto(mp_obj_t self_in) {
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return 1;
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}
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STATIC int dotclockframebuffer_framebuffer_get_native_frames_per_second_proto(mp_obj_t self_in) {
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return common_hal_dotclockframebuffer_framebuffer_get_refresh_rate(self_in);
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}
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STATIC void dotclockframebuffer_framebuffer_get_bufinfo(mp_obj_t self_in, mp_buffer_info_t *bufinfo) {
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dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in;
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*bufinfo = self->bufinfo;
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}
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STATIC int dotclockframebuffer_framebuffer_get_row_stride_proto(mp_obj_t self_in) {
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dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in;
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return common_hal_dotclockframebuffer_framebuffer_get_row_stride(self);
|
|
}
|
|
|
|
STATIC const framebuffer_p_t dotclockframebuffer_framebuffer_proto = {
|
|
MP_PROTO_IMPLEMENT(MP_QSTR_protocol_framebuffer)
|
|
.get_bufinfo = dotclockframebuffer_framebuffer_get_bufinfo,
|
|
.set_brightness = dotclockframebuffer_framebuffer_set_brightness_proto,
|
|
.get_brightness = dotclockframebuffer_framebuffer_get_brightness_proto,
|
|
.get_width = dotclockframebuffer_framebuffer_get_width_proto,
|
|
.get_height = dotclockframebuffer_framebuffer_get_height_proto,
|
|
.get_color_depth = dotclockframebuffer_framebuffer_get_color_depth_proto,
|
|
.get_row_stride = dotclockframebuffer_framebuffer_get_row_stride_proto,
|
|
.get_bytes_per_cell = dotclockframebuffer_framebuffer_get_bytes_per_cell_proto,
|
|
.get_native_frames_per_second = dotclockframebuffer_framebuffer_get_native_frames_per_second_proto,
|
|
.swapbuffers = dotclockframebuffer_framebuffer_swapbuffers,
|
|
.deinit = dotclockframebuffer_framebuffer_deinit_proto,
|
|
};
|
|
|
|
|
|
STATIC const mp_rom_map_elem_t dotclockframebuffer_framebuffer_locals_dict_table[] = {
|
|
{ MP_ROM_QSTR(MP_QSTR_width), MP_ROM_PTR(&dotclockframebuffer_framebuffer_width_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_height), MP_ROM_PTR(&dotclockframebuffer_framebuffer_height_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_row_stride), MP_ROM_PTR(&dotclockframebuffer_framebuffer_row_stride_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_frequency), MP_ROM_PTR(&dotclockframebuffer_framebuffer_frequency_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_refresh_rate), MP_ROM_PTR(&dotclockframebuffer_framebuffer_refresh_rate_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_refresh), MP_ROM_PTR(&dotclockframebuffer_framebuffer_refresh_obj) },
|
|
};
|
|
STATIC MP_DEFINE_CONST_DICT(dotclockframebuffer_framebuffer_locals_dict, dotclockframebuffer_framebuffer_locals_dict_table);
|
|
|
|
const mp_obj_type_t dotclockframebuffer_framebuffer_type = {
|
|
{ &mp_type_type },
|
|
.flags = MP_TYPE_FLAG_EXTENDED,
|
|
.name = MP_QSTR_DotClockFramebuffer,
|
|
.make_new = dotclockframebuffer_framebuffer_make_new,
|
|
.locals_dict = (mp_obj_dict_t *)&dotclockframebuffer_framebuffer_locals_dict,
|
|
MP_TYPE_EXTENDED_FIELDS(
|
|
.buffer_p = { .get_buffer = dotclockframebuffer_framebuffer_get_buffer, },
|
|
.protocol = &dotclockframebuffer_framebuffer_proto,
|
|
),
|
|
};
|