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| 1 | +# Copyright (c) 2024 - 2025 Kevin G. Schlosser |
| 2 | + |
| 3 | +import display_driver_framework |
| 4 | +import rgb_display_framework # NOQA |
| 5 | +from micropython import const # NOQA |
| 6 | +import lcd_bus |
| 7 | +import lvgl as lv |
| 8 | +import gc |
| 9 | + |
| 10 | + |
| 11 | +STATE_HIGH = display_driver_framework.STATE_HIGH |
| 12 | +STATE_LOW = display_driver_framework.STATE_LOW |
| 13 | +STATE_PWM = display_driver_framework.STATE_PWM |
| 14 | + |
| 15 | +BYTE_ORDER_RGB = display_driver_framework.BYTE_ORDER_RGB |
| 16 | +BYTE_ORDER_BGR = display_driver_framework.BYTE_ORDER_BGR |
| 17 | + |
| 18 | +_WRITE_CMD = const(0x02) |
| 19 | +_WRITE_COLOR = const(0x32) |
| 20 | + |
| 21 | +_RASET = const(0x2B) |
| 22 | +_CASET = const(0x2A) |
| 23 | +_RAMWR = const(0x2C) |
| 24 | + |
| 25 | + |
| 26 | +class SPD2010(display_driver_framework.DisplayDriver): |
| 27 | + |
| 28 | + _ORIENTATION_TABLE = () |
| 29 | + |
| 30 | + def _madctl(self, colormode, rotations, rotation=None): |
| 31 | + if rotation is None: |
| 32 | + rotation = ~self._rotation |
| 33 | + |
| 34 | + rotation = ~rotation |
| 35 | + value = colormode |
| 36 | + |
| 37 | + if rotation: |
| 38 | + value |= 0x03 |
| 39 | + |
| 40 | + return value |
| 41 | + |
| 42 | + def set_rotation(self, value): |
| 43 | + |
| 44 | + if value not in (lv.DISPLAY_ROTATION._0, lv.DISPLAY_ROTATION._180): # NOQA |
| 45 | + print('This rotation is not supported, only 0 and 180 is supported') |
| 46 | + return |
| 47 | + |
| 48 | + self._disp_drv.set_rotation(value) |
| 49 | + |
| 50 | + @staticmethod |
| 51 | + def __quad_spi_cmd_modifier(cmd): |
| 52 | + cmd <<= 8 |
| 53 | + cmd |= _WRITE_CMD << 24 |
| 54 | + return cmd |
| 55 | + |
| 56 | + @staticmethod |
| 57 | + def __quad_spi_color_cmd_modifier(cmd): |
| 58 | + cmd <<= 8 |
| 59 | + cmd |= _WRITE_COLOR << 24 |
| 60 | + return cmd |
| 61 | + |
| 62 | + @staticmethod |
| 63 | + def __dummy_cmd_modifier(cmd): |
| 64 | + return cmd |
| 65 | + |
| 66 | + def __init__( |
| 67 | + self, |
| 68 | + data_bus, |
| 69 | + display_width, |
| 70 | + display_height, |
| 71 | + frame_buffer1=None, |
| 72 | + frame_buffer2=None, |
| 73 | + reset_pin=None, |
| 74 | + reset_state=STATE_HIGH, |
| 75 | + power_pin=None, |
| 76 | + power_on_state=STATE_HIGH, |
| 77 | + backlight_pin=None, |
| 78 | + backlight_on_state=STATE_HIGH, |
| 79 | + offset_x=0, |
| 80 | + offset_y=0, |
| 81 | + color_byte_order=BYTE_ORDER_RGB, |
| 82 | + color_space=lv.COLOR_FORMAT.RGB888, # NOQA |
| 83 | + rgb565_byte_swap=False, # NOQA |
| 84 | + ): |
| 85 | + num_lanes = data_bus.get_lane_count() |
| 86 | + |
| 87 | + if num_lanes == 4: |
| 88 | + self.__cmd_modifier = self.__quad_spi_cmd_modifier |
| 89 | + self.__color_cmd_modifier = self.__quad_spi_color_cmd_modifier |
| 90 | + _cmd_bits = 32 |
| 91 | + |
| 92 | + # we need to override the default handling for creating the frame |
| 93 | + # buffer is using a quad spi bus. we don't want it to create |
| 94 | + # partial buffers for the quad SPI display |
| 95 | + |
| 96 | + buf_size = display_width * display_height * lv.color_format_get_size(color_space) |
| 97 | + |
| 98 | + if frame_buffer1 is None: |
| 99 | + gc.collect() |
| 100 | + |
| 101 | + for flags in ( |
| 102 | + lcd_bus.MEMORY_INTERNAL | lcd_bus.MEMORY_DMA, |
| 103 | + lcd_bus.MEMORY_SPIRAM | lcd_bus.MEMORY_DMA, |
| 104 | + lcd_bus.MEMORY_INTERNAL, |
| 105 | + lcd_bus.MEMORY_SPIRAM |
| 106 | + ): |
| 107 | + try: |
| 108 | + frame_buffer1 = ( |
| 109 | + data_bus.allocate_framebuffer(buf_size, flags) |
| 110 | + ) |
| 111 | + |
| 112 | + if (flags | lcd_bus.MEMORY_DMA) == flags: |
| 113 | + frame_buffer2 = ( |
| 114 | + data_bus.allocate_framebuffer(buf_size, flags) |
| 115 | + ) |
| 116 | + |
| 117 | + break |
| 118 | + except MemoryError: |
| 119 | + frame_buffer1 = data_bus.free_framebuffer(frame_buffer1) # NOQA |
| 120 | + |
| 121 | + if frame_buffer1 is None: |
| 122 | + raise MemoryError( |
| 123 | + f'Unable to allocate memory for frame buffer ({buf_size})' # NOQA |
| 124 | + ) |
| 125 | + |
| 126 | + if len(frame_buffer1) != buf_size: |
| 127 | + raise ValueError('incorrect framebuffer size') |
| 128 | + else: |
| 129 | + self.__cmd_modifier = self.__dummy_cmd_modifier |
| 130 | + self.__color_cmd_modifier = self.__dummy_cmd_modifier |
| 131 | + _cmd_bits = 8 |
| 132 | + |
| 133 | + # store these so we do not have to keep on converting them |
| 134 | + self.__ramwr = self.__color_cmd_modifier(_RAMWR) |
| 135 | + self.__caset = self.__cmd_modifier(_CASET) |
| 136 | + self.__raset = self.__cmd_modifier(_RASET) |
| 137 | + |
| 138 | + super().__init__( |
| 139 | + data_bus, |
| 140 | + display_width, |
| 141 | + display_height, |
| 142 | + frame_buffer1, |
| 143 | + frame_buffer2, |
| 144 | + reset_pin, |
| 145 | + reset_state, |
| 146 | + power_pin, |
| 147 | + power_on_state, |
| 148 | + backlight_pin, |
| 149 | + backlight_on_state, |
| 150 | + offset_x, |
| 151 | + offset_y, |
| 152 | + color_byte_order, |
| 153 | + color_space, # NOQA |
| 154 | + # we don't need to sue RGB565 byte swap so we override it |
| 155 | + rgb565_byte_swap=False, |
| 156 | + _cmd_bits=_cmd_bits, |
| 157 | + _param_bits=8, |
| 158 | + _init_bus=True |
| 159 | + ) |
| 160 | + |
| 161 | + def _flush_ready_cb(self, *_): |
| 162 | + # since there are 2 transfers that take place we need to |
| 163 | + # make sure that flush ready is only called after the second part |
| 164 | + # of the buffer has sent. |
| 165 | + self._disp_drv.flush_ready() |
| 166 | + |
| 167 | + def set_params(self, cmd, params=None): |
| 168 | + cmd = self.__cmd_modifier(cmd) |
| 169 | + self._data_bus.tx_param(cmd, params) |
| 170 | + |
| 171 | + def _set_memory_location(self, x1: int, y1: int, x2: int, y2: int): |
| 172 | + param_buf = self._param_buf # NOQA |
| 173 | + |
| 174 | + param_buf[0] = (x1 >> 8) & 0xFF |
| 175 | + param_buf[1] = x1 & 0xFF |
| 176 | + param_buf[2] = (x2 >> 8) & 0xFF |
| 177 | + param_buf[3] = x2 & 0xFF |
| 178 | + |
| 179 | + self._data_bus.tx_param(self.__caset, self._param_mv) |
| 180 | + |
| 181 | + param_buf[0] = (y1 >> 8) & 0xFF |
| 182 | + param_buf[1] = y1 & 0xFF |
| 183 | + param_buf[2] = (y2 >> 8) & 0xFF |
| 184 | + param_buf[3] = y2 & 0xFF |
| 185 | + |
| 186 | + self._data_bus.tx_param(self.__raset, self._param_mv) |
| 187 | + |
| 188 | + def _flush_cb(self, _, area, color_p): |
| 189 | + x1 = area.x1 + self._offset_x |
| 190 | + x2 = area.x2 + self._offset_x |
| 191 | + |
| 192 | + y1 = area.y1 + self._offset_y |
| 193 | + y2 = area.y2 + self._offset_y |
| 194 | + |
| 195 | + self._set_memory_location(x1, y1, x2, y2) |
| 196 | + |
| 197 | + width = x2 - x1 + 1 |
| 198 | + height = y2 - y1 + 1 |
| 199 | + size = width * height * lv.color_format_get_size(self._color_space) |
| 200 | + |
| 201 | + data_view = color_p.__dereference__(size) |
| 202 | + self._data_bus.tx_color(self.__ramwr, data_view, x1, y1, x2, y2, self._rotation, False) |
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