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| 1 | +""" |
| 2 | +MicroPython Waveshare 5.83" Black/White/Red GDEW0583Z21 e-paper display driver |
| 3 | +https://github.com/mcauser/micropython-waveshare-epaper |
| 4 | +
|
| 5 | +MIT License |
| 6 | +Copyright (c) 2017 Waveshare |
| 7 | +Copyright (c) 2018 Mike Causer |
| 8 | +
|
| 9 | +Permission is hereby granted, free of charge, to any person obtaining a copy |
| 10 | +of this software and associated documentation files (the "Software"), to deal |
| 11 | +in the Software without restriction, including without limitation the rights |
| 12 | +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 13 | +copies of the Software, and to permit persons to whom the Software is |
| 14 | +furnished to do so, subject to the following conditions: |
| 15 | +
|
| 16 | +The above copyright notice and this permission notice shall be included in all |
| 17 | +copies or substantial portions of the Software. |
| 18 | +
|
| 19 | +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 20 | +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 21 | +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 22 | +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 23 | +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 24 | +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 25 | +SOFTWARE. |
| 26 | +""" |
| 27 | + |
| 28 | +from micropython import const |
| 29 | +from time import sleep_ms |
| 30 | +import ustruct |
| 31 | + |
| 32 | +# Display resolution |
| 33 | +EPD_WIDTH = const(600) |
| 34 | +EPD_HEIGHT = const(448) |
| 35 | + |
| 36 | +# Display commands |
| 37 | +PANEL_SETTING = const(0x00) |
| 38 | +POWER_SETTING = const(0x01) |
| 39 | +POWER_OFF = const(0x02) |
| 40 | +#POWER_OFF_SEQUENCE_SETTING = const(0x03) |
| 41 | +POWER_ON = const(0x04) |
| 42 | +#POWER_ON_MEASURE = const(0x05) |
| 43 | +BOOSTER_SOFT_START = const(0x06) |
| 44 | +DEEP_SLEEP = const(0x07) |
| 45 | +DATA_START_TRANSMISSION_1 = const(0x10) |
| 46 | +#DATA_STOP = const(0x11) |
| 47 | +DISPLAY_REFRESH = const(0x12) |
| 48 | +#IMAGE_PROCESS = const(0x13) |
| 49 | +#LUT_FOR_VCOM = const(0x20) |
| 50 | +#LUT_BLUE = const(0x21) |
| 51 | +#LUT_WHITE = const(0x22) |
| 52 | +#LUT_GRAY_1 = const(0x23) |
| 53 | +#LUT_GRAY_2 = const(0x24) |
| 54 | +#LUT_RED_0 = const(0x25) |
| 55 | +#LUT_RED_1 = const(0x26) |
| 56 | +#LUT_RED_2 = const(0x27) |
| 57 | +#LUT_RED_3 = const(0x28) |
| 58 | +#LUT_XON = const(0x29) |
| 59 | +PLL_CONTROL = const(0x30) |
| 60 | +#TEMPERATURE_SENSOR_COMMAND = const(0x40) |
| 61 | +TEMPERATURE_CALIBRATION = const(0x41) |
| 62 | +#TEMPERATURE_SENSOR_WRITE = const(0x42) |
| 63 | +#TEMPERATURE_SENSOR_READ = const(0x43) |
| 64 | +VCOM_AND_DATA_INTERVAL_SETTING = const(0x50) |
| 65 | +#LOW_POWER_DETECTION = const(0x51) |
| 66 | +TCON_SETTING = const(0x60) |
| 67 | +TCON_RESOLUTION = const(0x61) |
| 68 | +#SPI_FLASH_CONTROL = const(0x65) |
| 69 | +#REVISION = const(0x70) |
| 70 | +#GET_STATUS = const(0x71) |
| 71 | +#AUTO_MEASUREMENT_VCOM = const(0x80) |
| 72 | +#READ_VCOM_VALUE = const(0x81) |
| 73 | +VCM_DC_SETTING = const(0x82) |
| 74 | +FLASH_MODE = const(0xE5) |
| 75 | + |
| 76 | +class EPD: |
| 77 | + def __init__(self, spi, cs, dc, rst, busy): |
| 78 | + self.spi = spi |
| 79 | + self.cs = cs |
| 80 | + self.dc = dc |
| 81 | + self.rst = rst |
| 82 | + self.busy = busy |
| 83 | + self.cs.init(self.cs.OUT, value=1) |
| 84 | + self.dc.init(self.dc.OUT, value=0) |
| 85 | + self.rst.init(self.rst.OUT, value=0) |
| 86 | + self.busy.init(self.busy.IN) |
| 87 | + self.width = EPD_WIDTH |
| 88 | + self.height = EPD_HEIGHT |
| 89 | + |
| 90 | + def _command(self, command, data=None): |
| 91 | + self.dc.low() |
| 92 | + self.cs.low() |
| 93 | + self.spi.write(bytearray([command])) |
| 94 | + self.cs.high() |
| 95 | + if data is not None: |
| 96 | + self._data(data) |
| 97 | + |
| 98 | + def _data(self, data): |
| 99 | + self.dc.high() |
| 100 | + self.cs.low() |
| 101 | + self.spi.write(data) |
| 102 | + self.cs.high() |
| 103 | + |
| 104 | + def init(self): |
| 105 | + self.reset() |
| 106 | + self._command(POWER_SETTING, b'\x37\x00') |
| 107 | + self._command(PANEL_SETTING, b'\xCF\x08') |
| 108 | + self._command(BOOSTER_SOFT_START, b'\xC7\xCC\x28') |
| 109 | + self._command(POWER_ON) |
| 110 | + self.wait_until_idle() |
| 111 | + self._command(PLL_CONTROL, b'\x3C') |
| 112 | + self._command(TEMPERATURE_CALIBRATION, b'\x00') |
| 113 | + self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\x77') |
| 114 | + self._command(TCON_SETTING, b'\x22') |
| 115 | + self._command(TCON_RESOLUTION, b'\x02\x58\x01\xC0') # 0x02 = source 600, 0x01 = gate 448 |
| 116 | + self._command(VCM_DC_SETTING, b'\x20') # decide by LUT file |
| 117 | + self._command(FLASH_MODE, b'\x03') |
| 118 | + |
| 119 | + def wait_until_idle(self): |
| 120 | + while self.busy.value() == 0: |
| 121 | + sleep_ms(100) |
| 122 | + |
| 123 | + def reset(self): |
| 124 | + self.rst.low() |
| 125 | + sleep_ms(200) |
| 126 | + self.rst.high() |
| 127 | + sleep_ms(200) |
| 128 | + |
| 129 | + # draw the current frame memory |
| 130 | + def display_frame(self, frame_buffer_black, frame_buffer_red): |
| 131 | + if (frame_buffer != None and frame_buffer_red != None): |
| 132 | + self._command(DATA_START_TRANSMISSION_1) |
| 133 | + for i in range(0, self.width // 8 * self.height): |
| 134 | + temp1 = frame_buffer_black[i] |
| 135 | + temp2 = frame_buffer_red[i] |
| 136 | + j = 0 |
| 137 | + while (j < 8): |
| 138 | + if ((temp2 & 0x80) == 0x00): |
| 139 | + temp3 = 0x04 #red |
| 140 | + elif ((temp1 & 0x80) == 0x00): |
| 141 | + temp3 = 0x00 #black |
| 142 | + else: |
| 143 | + temp3 = 0x03 #white |
| 144 | + |
| 145 | + temp3 = (temp3 << 4) & 0xFF |
| 146 | + temp1 = (temp1 << 1) & 0xFF |
| 147 | + temp2 = (temp2 << 1) & 0xFF |
| 148 | + j += 1 |
| 149 | + if ((temp2 & 0x80) == 0x00): |
| 150 | + temp3 |= 0x04 #red |
| 151 | + elif ((temp1 & 0x80) == 0x00): |
| 152 | + temp3 |= 0x00 #black |
| 153 | + else: |
| 154 | + temp3 |= 0x03 #white |
| 155 | + temp1 = (temp1 << 1) & 0xFF |
| 156 | + temp2 = (temp2 << 1) & 0xFF |
| 157 | + self._data(bytearray([temp3])) |
| 158 | + j += 1 |
| 159 | + self._command(DISPLAY_REFRESH) |
| 160 | + sleep_ms(100) |
| 161 | + self.wait_until_idle() |
| 162 | + |
| 163 | + # to wake call reset() or init() |
| 164 | + def sleep(self): |
| 165 | + self._command(POWER_OFF) |
| 166 | + self.wait_until_idle() |
| 167 | + self._command(DEEP_SLEEP, b'\xA5') |
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