/* * This file is part of the Micro Python project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2019 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/dotclockframebuffer/DotClockFramebuffer.h" #include "py/binary.h" #include "py/objarray.h" #include "py/objproperty.h" #include "py/runtime.h" #include "shared-bindings/microcontroller/Pin.h" #include "shared-bindings/util.h" #include "shared-module/displayio/__init__.h" #include "supervisor/shared/translate/translate.h" //| class DotClockFramebuffer: //| """Manage updating a 'dot-clock' framebuffer in the background while Python code runs. //| It doesn't handle display initialization.""" //| //| def __init__( //| self, //| *, //| de: microcontroller.Pin, //| vsync: microcontroller.Pin, //| hsync: microcontroller.Pin, //| dclk: microcontroller.Pin, //| red: Tuple[microcontroller.Pin], //| green: Tuple[microcontroller.Pin], //| blue: Tuple[microcontroller.Pin], //| frequency: int, //| width: int, //| height: int, //| hsync_pulse_width: int, //| hsync_back_porch: int, //| hsync_front_porch: int, //| hsync_idle_low: bool, //| vsync_back_porch: int, //| vsync_front_porch: int, //| vsync_idle_low: bool, //| de_idle_high: bool, //| pclk_active_high: bool, //| pclk_idle_high: bool, //| overscan_left: int = 0, //| ) -> None: //| """Create a DotClockFramebuffer object associated with the given pins. //| //| The pins are then in use by the display until `displayio.release_displays()` //| is called even after a reload. (It does this so CircuitPython can use the display after your //| code is done.) So, the first time you initialize a display bus in code.py you should call //| :py:func:`displayio.release_displays` first, otherwise it will error after the first code.py run. //| //| 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: //| ``DotClockFramebuffer(**board.TFT_PINS, **board.TFT_TIMINGS)`` //| //| On Espressif-family microcontrollers, this driver requires that the //| ``CIRCUITPY_RESERVED_PSRAM`` in ``settings.toml`` be large enough to hold the //| framebuffer. Generally, boards with built-in displays or display connectors //| will have a default setting that is large enough for typical use. If the //| constructor raises a MemoryError or an IDFError, this probably indicates the //| setting is too small and should be increased. //| //| TFT connection parameters: //| //| :param microcontroller.Pin de: The "data enable" input to the display //| :param microcontroller.Pin vsync: The "vertical sync" input to the display //| :param microcontroller.Pin hsync: The "horizontal sync" input to the display //| :param microcontroller.Pin dclk: The "data clock" input to the display //| :param ~tuple red: The red data pins, most significant pin first. //| :param ~tuple green: The green data pins, most significant pin first. //| :param ~tuple blue: The blue data pins, most significant pin first. //| //| TFT timing parameters: //| //| :param int frequency: The requested data clock frequency in Hz. //| :param int width: The visible width of the display, in pixels //| :param int height: The visible height of the display, in pixels //| :param int hsync_pulse_width: Horizontal sync width in pixels //| :param int hsync_back_porch: Horizontal back porch, number of pixels between hsync and start of line active data //| :param int hsync_front_porch: Horizontal front porch, number of pixels between the end of active data and the next hsync //| :param int vsync_back_porch: Vertical back porch, number of lines between vsync and start of frame //| :param int vsync_front_porch: Vertical front porch, number of lines between the end of frame and the next vsync //| :param bool hsync_idle_low: True if the hsync signal is low in IDLE state //| :param bool vsync_idle_low: True if the vsync signal is low in IDLE state //| :param bool de_idle_high: True if the de signal is high in IDLE state //| :param bool pclk_active_high: True if the display data is clocked out at the rising edge of dclk //| :param bool pclk_idle_high: True if the dclk stays at high level in IDLE phase //| //| :param int overscan_left: Allocate additional non-visible columns left of the first display column //| """ //| #:param int overscan_top: Allocate additional non-visible rows above the first display row //| #:param int overscan_right: Allocate additional non-visible columns right of the last display column //| #:param int overscan_bottom: Allocate additional non-visible rows below the last display row //| ... 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) { enum { ARG_de, ARG_vsync, ARG_hsync, ARG_dclk, ARG_red, ARG_green, ARG_blue, ARG_frequency, ARG_width, ARG_height, ARG_hsync_pulse_width, ARG_hsync_back_porch, ARG_hsync_front_porch, ARG_hsync_idle_low, ARG_vsync_pulse_width, ARG_vsync_back_porch, ARG_vsync_front_porch, ARG_vsync_idle_low, ARG_de_idle_high, ARG_pclk_active_high, ARG_pclk_idle_high, ARG_overscan_left}; static const mp_arg_t allowed_args[] = { { MP_QSTR_de, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } }, { MP_QSTR_vsync, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } }, { MP_QSTR_hsync, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } }, { MP_QSTR_dclk, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } }, { MP_QSTR_red, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } }, { MP_QSTR_green, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } }, { MP_QSTR_blue, MP_ARG_OBJ | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_obj = mp_const_none } }, { MP_QSTR_frequency, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } }, { MP_QSTR_width, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } }, { MP_QSTR_height, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } }, { MP_QSTR_hsync_pulse_width, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } }, { MP_QSTR_hsync_back_porch, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } }, { MP_QSTR_hsync_front_porch, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } }, { MP_QSTR_hsync_idle_low, MP_ARG_BOOL | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_bool = false } }, { MP_QSTR_vsync_pulse_width, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } }, { MP_QSTR_vsync_back_porch, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } }, { MP_QSTR_vsync_front_porch, MP_ARG_INT | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_int = 0 } }, { MP_QSTR_vsync_idle_low, MP_ARG_BOOL | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_bool = false } }, { MP_QSTR_de_idle_high, MP_ARG_BOOL | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_bool = false } }, { MP_QSTR_pclk_active_high, MP_ARG_BOOL | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_bool = false } }, { MP_QSTR_pclk_idle_high, MP_ARG_BOOL | MP_ARG_KW_ONLY | MP_ARG_REQUIRED, {.u_bool = false } }, { MP_QSTR_overscan_left, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0 } }, }; mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); const mcu_pin_obj_t *de = validate_obj_is_free_pin(args[ARG_de].u_obj, MP_QSTR_de); const mcu_pin_obj_t *vsync = validate_obj_is_free_pin(args[ARG_vsync].u_obj, MP_QSTR_vsync); const mcu_pin_obj_t *hsync = validate_obj_is_free_pin(args[ARG_hsync].u_obj, MP_QSTR_hsync); const mcu_pin_obj_t *dclk = validate_obj_is_free_pin(args[ARG_dclk].u_obj, MP_QSTR_dclk); uint8_t num_red, num_green, num_blue; const mcu_pin_obj_t *red_pins[8], *green_pins[8], *blue_pins[8]; 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); 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); 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); mp_printf(&mp_plat_print, "#red=%d #green=%d #blue=%d\n", num_red, num_green, num_blue); dotclockframebuffer_framebuffer_obj_t *self = &allocate_display_bus_or_raise()->dotclock; self->base.type = &dotclockframebuffer_framebuffer_type; common_hal_dotclockframebuffer_framebuffer_construct( self, de, vsync, hsync, dclk, red_pins, num_red, green_pins, num_green, blue_pins, num_blue, args[ARG_frequency].u_int, args[ARG_width].u_int, args[ARG_height].u_int, 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, 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, args[ARG_de_idle_high].u_bool, args[ARG_pclk_active_high].u_bool, args[ARG_pclk_idle_high].u_bool, args[ARG_overscan_left].u_int ); return self; } static void check_for_deinit(dotclockframebuffer_framebuffer_obj_t *self) { if (common_hal_dotclockframebuffer_framebuffer_deinitialized(self)) { raise_deinited_error(); } } //| def refresh(self) -> None: //| """Transmits the color data in the buffer to the pixels so that //| they are shown. //| //| If this function is not called, the results are unpredictable; updates may be partially shown. //| """ //| ... STATIC mp_obj_t dotclockframebuffer_framebuffer_refresh(mp_obj_t self_in) { dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in; check_for_deinit(self); common_hal_dotclockframebuffer_framebuffer_refresh(self); return mp_const_none; } MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_refresh_obj, dotclockframebuffer_framebuffer_refresh); //| refresh_rate: float //| """The pixel refresh rate of the display, in Hz""" STATIC mp_obj_t dotclockframebuffer_framebuffer_get_refresh_rate(mp_obj_t self_in) { dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in; check_for_deinit(self); return MP_OBJ_NEW_SMALL_INT(common_hal_dotclockframebuffer_framebuffer_get_refresh_rate(self)); } MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_get_refresh_rate_obj, dotclockframebuffer_framebuffer_get_refresh_rate); MP_PROPERTY_GETTER(dotclockframebuffer_framebuffer_refresh_rate_obj, (mp_obj_t)&dotclockframebuffer_framebuffer_get_refresh_rate_obj); //| frequency: int //| """The pixel frequency of the display, in Hz""" STATIC mp_obj_t dotclockframebuffer_framebuffer_get_frequency(mp_obj_t self_in) { dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in; check_for_deinit(self); return MP_OBJ_NEW_SMALL_INT(common_hal_dotclockframebuffer_framebuffer_get_frequency(self)); } MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_get_frequency_obj, dotclockframebuffer_framebuffer_get_frequency); MP_PROPERTY_GETTER(dotclockframebuffer_framebuffer_frequency_obj, (mp_obj_t)&dotclockframebuffer_framebuffer_get_frequency_obj); //| width: int //| """The width of the display, in pixels""" STATIC mp_obj_t dotclockframebuffer_framebuffer_get_width(mp_obj_t self_in) { dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in; check_for_deinit(self); return MP_OBJ_NEW_SMALL_INT(common_hal_dotclockframebuffer_framebuffer_get_width(self)); } MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_get_width_obj, dotclockframebuffer_framebuffer_get_width); MP_PROPERTY_GETTER(dotclockframebuffer_framebuffer_width_obj, (mp_obj_t)&dotclockframebuffer_framebuffer_get_width_obj); //| height: int //| """The height of the display, in pixels""" //| STATIC mp_obj_t dotclockframebuffer_framebuffer_get_height(mp_obj_t self_in) { dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in; check_for_deinit(self); return MP_OBJ_NEW_SMALL_INT(common_hal_dotclockframebuffer_framebuffer_get_height(self)); } MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_get_height_obj, dotclockframebuffer_framebuffer_get_height); MP_PROPERTY_GETTER(dotclockframebuffer_framebuffer_height_obj, (mp_obj_t)&dotclockframebuffer_framebuffer_get_height_obj); //| row_stride: int //| """The row_stride of the display, in bytes //| //| 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. //| This property gives the stride in **bytes**. //| //| On Espressif this value is **guaranteed** to be a multiple of the 2 (i.e., it is a whole number of pixels)""" //| STATIC mp_obj_t dotclockframebuffer_framebuffer_get_row_stride(mp_obj_t self_in) { dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in; check_for_deinit(self); return MP_OBJ_NEW_SMALL_INT(common_hal_dotclockframebuffer_framebuffer_get_row_stride(self)); } MP_DEFINE_CONST_FUN_OBJ_1(dotclockframebuffer_framebuffer_get_row_stride_obj, dotclockframebuffer_framebuffer_get_row_stride); MP_PROPERTY_GETTER(dotclockframebuffer_framebuffer_row_stride_obj, (mp_obj_t)&dotclockframebuffer_framebuffer_get_row_stride_obj); STATIC mp_int_t dotclockframebuffer_framebuffer_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) { dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in; // a readonly framebuffer would be unusual but not impossible if ((flags & MP_BUFFER_WRITE) && !(self->bufinfo.typecode & MP_OBJ_ARRAY_TYPECODE_FLAG_RW)) { return 1; } *bufinfo = self->bufinfo; bufinfo->typecode = 'H'; return 0; } // These version exists so that the prototype matches the protocol, // avoiding a type cast that can hide errors STATIC void dotclockframebuffer_framebuffer_swapbuffers(mp_obj_t self_in, uint8_t *dirty_row_bitmap) { (void)dirty_row_bitmap; dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in; common_hal_dotclockframebuffer_framebuffer_refresh(self); } STATIC void dotclockframebuffer_framebuffer_deinit_proto(mp_obj_t self_in) { common_hal_dotclockframebuffer_framebuffer_deinit(self_in); } STATIC float dotclockframebuffer_framebuffer_get_brightness_proto(mp_obj_t self_in) { return 1.0f; } STATIC bool dotclockframebuffer_framebuffer_set_brightness_proto(mp_obj_t self_in, mp_float_t value) { return false; } STATIC int dotclockframebuffer_framebuffer_get_width_proto(mp_obj_t self_in) { return common_hal_dotclockframebuffer_framebuffer_get_width(self_in); } STATIC int dotclockframebuffer_framebuffer_get_height_proto(mp_obj_t self_in) { return common_hal_dotclockframebuffer_framebuffer_get_height(self_in); } STATIC int dotclockframebuffer_framebuffer_get_color_depth_proto(mp_obj_t self_in) { return 16; } STATIC int dotclockframebuffer_framebuffer_get_bytes_per_cell_proto(mp_obj_t self_in) { return 1; } STATIC int dotclockframebuffer_framebuffer_get_native_frames_per_second_proto(mp_obj_t self_in) { return common_hal_dotclockframebuffer_framebuffer_get_refresh_rate(self_in); } STATIC void dotclockframebuffer_framebuffer_get_bufinfo(mp_obj_t self_in, mp_buffer_info_t *bufinfo) { dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in; *bufinfo = self->bufinfo; } STATIC int dotclockframebuffer_framebuffer_get_row_stride_proto(mp_obj_t self_in) { dotclockframebuffer_framebuffer_obj_t *self = (dotclockframebuffer_framebuffer_obj_t *)self_in; 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, ), };