kopia lustrzana https://github.com/peterhinch/micropython-micro-gui
epaper/pico_epaper_42.py: Simplify code.
peterhinch
rodzic
3de3a8cec8
commit
2c10ca4418
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@ -2,7 +2,7 @@
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# ePaper 4.2" display. This version fixes bugs and supports partial updates.
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# ePaper 4.2" display. This version fixes bugs and supports partial updates.
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# https://github.com/peterhinch/micropython-nano-gui/blob/master/drivers/epaper/pico_epaper_42.py
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# https://github.com/peterhinch/micropython-nano-gui/blob/master/drivers/epaper/pico_epaper_42.py
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# Adapted from the Waveshare driver by Peter Hinch Sept 2022-March 2023.
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# Adapted from the Waveshare driver by Peter Hinch Sept 2022-May 2023.
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# https://www.waveshare.com/pico-epaper-4.2.htm
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# https://www.waveshare.com/pico-epaper-4.2.htm
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# UC8176 manual https://www.waveshare.com/w/upload/8/88/UC8176.pdf
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# UC8176 manual https://www.waveshare.com/w/upload/8/88/UC8176.pdf
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# Waveshare's copy of this driver.
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# Waveshare's copy of this driver.
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@ -45,65 +45,76 @@ import time
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import uasyncio as asyncio
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import uasyncio as asyncio
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from drivers.boolpalette import BoolPalette
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from drivers.boolpalette import BoolPalette
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def asyncio_running():
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try:
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_ = asyncio.current_task()
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except:
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return False
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return True
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# Display resolution
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# Display resolution
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_EPD_WIDTH = const(400)
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_EPD_WIDTH = const(400)
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_BWIDTH = _EPD_WIDTH // 8
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_BWIDTH = _EPD_WIDTH // 8
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_EPD_HEIGHT = const(300)
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_EPD_HEIGHT = const(300)
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RST_PIN = 12
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_RST_PIN = const(12) # Rear socket pinout
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DC_PIN = 8
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_DC_PIN = const(8)
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CS_PIN = 9
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_CS_PIN = const(9)
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BUSY_PIN = 13
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_BUSY_PIN = const(13)
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EPD_lut_vcom0 = b"\x00\x08\x08\x00\x00\x02\x00\x0F\x0F\x00\x00\x01\x00\x08\x08\x00\
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# LUT elements vcom, ww, bw, wb, bb
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# ****************************** full screen update LUT********************************* #
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lut_full = (b"\x00\x08\x08\x00\x00\x02\x00\x0F\x0F\x00\x00\x01\x00\x08\x08\x00\
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\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00"
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\x00\x00\x00\x00\x00\x00",
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b"\x50\x08\x08\x00\x00\x02\x90\x0F\x0F\x00\x00\x01\xA0\x08\x08\x00\x00\x02\
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EPD_lut_ww = b"\x50\x08\x08\x00\x00\x02\x90\x0F\x0F\x00\x00\x01\xA0\x08\x08\x00\x00\x02\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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b"\x50\x08\x08\x00\x00\x02\x90\x0F\x0F\x00\x00\x01\xA0\x08\x08\x00\x00\x02\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
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EPD_lut_bw = b"\x50\x08\x08\x00\x00\x02\x90\x0F\x0F\x00\x00\x01\xA0\x08\x08\x00\x00\x02\
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b"\xA0\x08\x08\x00\x00\x02\x90\x0F\x0F\x00\x00\x01\x50\x08\x08\x00\x00\x02\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
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b"\x20\x08\x08\x00\x00\x02\x90\x0F\x0F\x00\x00\x01\x10\x08\x08\x00\x00\x02\
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EPD_lut_wb = b"\xA0\x08\x08\x00\x00\x02\x90\x0F\x0F\x00\x00\x01\x50\x08\x08\x00\x00\x02\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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)
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EPD_lut_bb = b"\x20\x08\x08\x00\x00\x02\x90\x0F\x0F\x00\x00\x01\x10\x08\x08\x00\x00\x02\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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# ******************************partial screen update LUT********************************* #
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# ******************************partial screen update LUT********************************* #
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EPD_partial_lut_vcom1 = b"\x00\x19\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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lut_part = (
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b"\x00\x19\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00"
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\x00\x00\x00\x00\x00\x00",
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b"\x00\x19\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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EPD_partial_lut_ww1 = b"\x00\x19\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00"
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\x00\x00\x00\x00",
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b"\x80\x19\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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EPD_partial_lut_bw1 =b"\x80\x19\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00"
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\x00\x00\x00\x00",
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b"\x40\x19\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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EPD_partial_lut_wb1 = b"\x40\x19\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00"
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\x00\x00\x00\x00",
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b"\x00\x19\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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EPD_partial_lut_bb1 = b"\x00\x19\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
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\x00\x00\x00\x00"
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\x00\x00\x00\x00",
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)
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# [index into LUT, register address]. Design allows for repeats as per greyscale driver.
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lut_map = ((0, b"\x20"), (1, b"\x21"), (2, b"\x22"), (3, b"\x23"), (4, b"\x24"))
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# Invert: EPD is black on white
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# Invert: EPD is black on white
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# 337/141 us for 2000 bytes (125/250MHz)
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# 337/141 us for 2000 bytes (125/250MHz)
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@micropython.viper
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@micropython.viper
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def _linv(dest:ptr32, source:ptr32, length:int):
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def _linv(dest: ptr32, source: ptr32, length: int):
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n: int = length-1
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n: int = length - 1
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z: uint32 = int(0xFFFFFFFF)
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z: uint32 = int(0xFFFFFFFF)
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while n >= 0:
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while n >= 0:
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dest[n] = source[n] ^ z
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dest[n] = source[n] ^ z
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n -= 1
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n -= 1
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class EPD(framebuf.FrameBuffer):
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class EPD(framebuf.FrameBuffer):
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# A monochrome approach should be used for coding this. The rgb method ensures
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# A monochrome approach should be used for coding this. The rgb method ensures
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# nothing breaks if users specify colors.
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# nothing breaks if users specify colors.
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@ -111,156 +122,109 @@ class EPD(framebuf.FrameBuffer):
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def rgb(r, g, b):
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def rgb(r, g, b):
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return int((r > 127) or (g > 127) or (b > 127))
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return int((r > 127) or (g > 127) or (b > 127))
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# Discard asyn: autodetect
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def __init__(self, spi=None, cs=None, dc=None, rst=None, busy=None, asyn=False):
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def __init__(self, spi=None, cs=None, dc=None, rst=None, busy=None, asyn=False):
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self.reset_pin = Pin(RST_PIN, Pin.OUT) if rst is None else rst
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self._rst = Pin(_RST_PIN, Pin.OUT) if rst is None else rst
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self.busy_pin = Pin(BUSY_PIN, Pin.IN, Pin.PULL_UP) if busy is None else busy
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self._busy_pin = Pin(_BUSY_PIN, Pin.IN, Pin.PULL_UP) if busy is None else busy
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self.cs_pin = Pin(CS_PIN, Pin.OUT) if cs is None else cs
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self._cs = Pin(_CS_PIN, Pin.OUT) if cs is None else cs
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self.dc_pin = Pin(DC_PIN, Pin.OUT) if dc is None else dc
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self._dc = Pin(_DC_PIN, Pin.OUT) if dc is None else dc
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self.spi = SPI(1, sck = Pin(10), mosi = Pin(11), miso = Pin(28)) if spi is None else spi
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self._spi = SPI(1, sck=Pin(10), mosi=Pin(11), miso=Pin(28)) if spi is None else spi
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self.spi.init(baudrate = 4_000_000)
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self._spi.init(baudrate=10_000_000) # Datasheet limit 10MHz
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self._asyn = asyn
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# Busy flag: set immediately on .show(). Cleared when busy pin is logically false.
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self._busy = False # Set immediately on .show(). Cleared when busy pin is logically false (physically 1).
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self._busy = False
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self._updated = asyncio.Event()
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# Async API
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self.updated = asyncio.Event()
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self.complete = asyncio.Event()
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# Public bound variables required by nanogui.
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# Dimensions in pixels as seen by nanogui
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self.width = _EPD_WIDTH
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self.width = _EPD_WIDTH
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self.height = _EPD_HEIGHT
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self.height = _EPD_HEIGHT
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self.buf = bytearray(_EPD_HEIGHT * _BWIDTH)
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# Other public bound variable.
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self.mvb = memoryview(self.buf)
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# Special mode enables demos written for generic displays to run.
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self.ibuf = bytearray(1000) # Buffer for inverted pixels
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self.demo_mode = False
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self._buf = bytearray(_EPD_HEIGHT * _BWIDTH)
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self._mvb = memoryview(self._buf)
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self._ibuf = bytearray(1000) # Buffer for inverted pixels
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mode = framebuf.MONO_HLSB
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mode = framebuf.MONO_HLSB
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self.palette = BoolPalette(mode)
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self.palette = BoolPalette(mode) # Enable CWriter.
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super().__init__(self.buf, _EPD_WIDTH, _EPD_HEIGHT, mode)
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super().__init__(self._buf, _EPD_WIDTH, _EPD_HEIGHT, mode)
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self.init()
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self.init()
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time.sleep_ms(500)
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time.sleep_ms(500)
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# Hardware reset
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# Hardware reset
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def reset(self):
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def reset(self):
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for v in (1, 0, 1):
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for v in (1, 0, 1):
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self.reset_pin(v)
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self._rst(v)
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time.sleep_ms(20)
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time.sleep_ms(20)
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def send_command(self, command):
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def _command(self, command, data=None):
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self.dc_pin(0)
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self._dc(0)
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self.cs_pin(0)
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self._cs(0)
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self.spi.write(command)
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self._spi.write(command)
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self.cs_pin(1)
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self._cs(1)
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if data is not None:
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self._data(data)
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def send_bytes(self, data):
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# Datasheet P26 seems to mandate CS False after each byte. Ugh.
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self.dc_pin(1)
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def _data(self, data, buf1=bytearray(1)):
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self.cs_pin(0)
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self._dc(1)
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self.spi.write(data)
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for b in data:
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self.cs_pin(1)
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self._cs(0)
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buf1[0] = b
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self._spi.write(buf1)
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self._cs(1)
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def display_on(self):
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def display_on(self):
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self.send_command(b"\x12")
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self._command(b"\x12")
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time.sleep_ms(100)
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time.sleep_ms(100)
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self.wait_until_ready()
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self.wait_until_ready()
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def init(self):
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def init(self):
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self.reset()
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self.reset()
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self.send_command(b"\x01") # POWER SETTING
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cmd = self._command
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self.send_bytes(b"\x03")
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cmd(b"\x01", b"\x03\x00\x2b\x2b")
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self.send_bytes(b"\x00")
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# Booster soft start. Matches datasheet.
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self.send_bytes(b"\x2b")
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cmd(b"\x06", b"\x17\x17\x17")
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self.send_bytes(b"\x2b")
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cmd(b"\x04") # Power on
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self.send_command(b"\x06") # boost soft start
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self.send_bytes(b"\x17") # A
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self.send_bytes(b"\x17") # B
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self.send_bytes(b"\x17") # C
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self.send_command(b"\x04") # POWER_ON
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self.wait_until_ready()
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self.wait_until_ready()
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cmd(b"\x00", b"\xbf") # panel setting
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self.send_command(b"\x00") # panel setting
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cmd(b"\x30", b"\x3c") # PLL setting
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self.send_bytes(b"\xbf") # KW-BF KWR-AF BWROTP 0f BWOTP 1f
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cmd(b"\x61", b"\x01\x90\x01\x2C") # resolution setting
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self.send_bytes(b"\x0d")
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cmd(b"\x82", b"\x28") # vcom_DC setting
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cmd(b"\x50", b"\x97") # VCOM AND DATA INTERVAL SETTING
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self.send_command(b"\x30") # PLL setting
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# 97white border 77black border VBDF 17|D7 VBDW 97 VBDB 57 VBDF F7 VBDW 77 VBDB 37 VBDR B7
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self.send_bytes(b"\x3C") # 3A 100HZ 29 150Hz 39 200HZ 31 171HZ
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self.send_command(b"\x61") # resolution setting
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self.send_bytes(b"\x01")
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self.send_bytes(b"\x90") # 128
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self.send_bytes(b"\x01")
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self.send_bytes(b"\x2c")
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self.send_command(b"\x82") # vcom_DC setting
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self.send_bytes(b"\x28")
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self.send_command(b"\x50") # VCOM AND DATA INTERVAL SETTING
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self.send_bytes(b"\x97") # 97white border 77black border VBDF 17|D7 VBDW 97 VBDB 57 VBDF F7 VBDW 77 VBDB 37 VBDR B7
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self.set_full()
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self.set_full()
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# Clear display
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self.send_command(b"\x10")
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|
||||||
for j in range(_EPD_HEIGHT):
|
|
||||||
self.send_bytes(b"\xff" * _BWIDTH)
|
|
||||||
|
|
||||||
self.send_command(b"\x13")
|
|
||||||
for j in range(_EPD_HEIGHT):
|
|
||||||
self.send_bytes(b"\xff" * _BWIDTH)
|
|
||||||
|
|
||||||
self.send_command(b"\x12")
|
def send_lut(self, lm, lut):
|
||||||
time.sleep_ms(10)
|
for idx, reg in lm:
|
||||||
self.display_on()
|
self._command(reg, lut[idx])
|
||||||
|
|
||||||
def set_full(self): # Normal full updates
|
def set_full(self): # Normal full updates
|
||||||
self.send_command(b"\x20")
|
self.send_lut(lut_map, lut_full)
|
||||||
self.send_bytes(EPD_lut_vcom0)
|
|
||||||
|
|
||||||
self.send_command(b"\x21")
|
|
||||||
self.send_bytes(EPD_lut_ww)
|
|
||||||
|
|
||||||
self.send_command(b"\x22")
|
|
||||||
self.send_bytes(EPD_lut_bw)
|
|
||||||
|
|
||||||
self.send_command(b"\x23")
|
|
||||||
self.send_bytes(EPD_lut_wb)
|
|
||||||
|
|
||||||
self.send_command(b"\x24")
|
|
||||||
self.send_bytes(EPD_lut_bb)
|
|
||||||
|
|
||||||
def set_partial(self): # Partial updates
|
def set_partial(self): # Partial updates
|
||||||
self.send_command(b"\x20")
|
self.send_lut(lut_map, lut_part)
|
||||||
self.send_bytes(EPD_partial_lut_vcom1)
|
|
||||||
|
|
||||||
self.send_command(b"\x21")
|
|
||||||
self.send_bytes(EPD_partial_lut_ww1)
|
|
||||||
|
|
||||||
self.send_command(b"\x22")
|
|
||||||
self.send_bytes(EPD_partial_lut_bw1)
|
|
||||||
|
|
||||||
self.send_command(b"\x23")
|
|
||||||
self.send_bytes(EPD_partial_lut_wb1)
|
|
||||||
|
|
||||||
self.send_command(b"\x24")
|
|
||||||
self.send_bytes(EPD_partial_lut_bb1)
|
|
||||||
|
|
||||||
def wait_until_ready(self):
|
def wait_until_ready(self):
|
||||||
while not self.ready():
|
while not self.ready():
|
||||||
time.sleep_ms(100)
|
time.sleep_ms(100)
|
||||||
|
|
||||||
async def wait(self):
|
|
||||||
while not self.ready():
|
|
||||||
await asyncio.sleep_ms(100)
|
|
||||||
|
|
||||||
# Pause until framebuf has been copied to device.
|
|
||||||
async def updated(self):
|
|
||||||
self._updated.clear()
|
|
||||||
await self._updated.wait()
|
|
||||||
self._updated.clear()
|
|
||||||
|
|
||||||
# For polling in asynchronous code. Just checks pin state.
|
# For polling in asynchronous code. Just checks pin state.
|
||||||
# 0 == busy. Comment in official code is wrong. Code is correct.
|
# 0 == busy. Comment in official code is wrong. Code is correct.
|
||||||
def ready(self):
|
def ready(self):
|
||||||
return not (self._busy or (self.busy_pin() == 0)) # 0 == busy
|
return not (self._busy or (self._busy_pin() == 0)) # 0 == busy
|
||||||
|
|
||||||
@micropython.native
|
@micropython.native
|
||||||
def _bsend(self, start, nbytes):
|
def _bsend(self, start, nbytes): # Invert b<->w, buffer and send nbytes source bytes
|
||||||
buf = self.ibuf
|
buf = self._ibuf # Invert and buffer is done 32 bits at a time, hence >> 2
|
||||||
_linv(buf, self.mvb[start:], nbytes >> 2) # Invert image data for EPD
|
_linv(buf, self._mvb[start:], nbytes >> 2)
|
||||||
self.send_bytes(buf)
|
self._dc(1)
|
||||||
|
self._cs(0)
|
||||||
|
self._spi.write(buf)
|
||||||
|
self._cs(1)
|
||||||
|
|
||||||
# Time to convert and transmit 1000 bytes ~ 1ms: most of that is tx @ 10MHz
|
# Time to convert and transmit 1000 bytes ~ 1ms: most of that is tx @ 10MHz
|
||||||
# Yield every 16 transfers means blocking is ~16ms
|
# Yield every 16 transfers means blocking is ~16ms
|
||||||
|
|
@ -268,10 +232,10 @@ class EPD(framebuf.FrameBuffer):
|
||||||
# Timing @10MHz/250MHz: full refresh 2.1s, partial 740ms: the bulk of the time
|
# Timing @10MHz/250MHz: full refresh 2.1s, partial 740ms: the bulk of the time
|
||||||
# is spent spinning on the busy pin and is CPU frequency independent.
|
# is spent spinning on the busy pin and is CPU frequency independent.
|
||||||
async def _as_show(self):
|
async def _as_show(self):
|
||||||
self.send_command(b"\x13")
|
self._command(b"\x13")
|
||||||
fbidx = 0 # Index into framebuf
|
fbidx = 0 # Index into framebuf
|
||||||
nbytes = len(self.ibuf) # Bytes to send
|
nbytes = len(self._ibuf) # Bytes to send
|
||||||
nleft = len(self.buf) # Size of framebuf
|
nleft = len(self._buf) # Size of framebuf
|
||||||
npass = 0
|
npass = 0
|
||||||
while nleft > 0:
|
while nleft > 0:
|
||||||
self._bsend(fbidx, nbytes) # Invert, buffer and send nbytes
|
self._bsend(fbidx, nbytes) # Invert, buffer and send nbytes
|
||||||
|
|
@ -280,27 +244,32 @@ class EPD(framebuf.FrameBuffer):
|
||||||
nbytes = min(nbytes, nleft)
|
nbytes = min(nbytes, nleft)
|
||||||
if not ((npass := npass + 1) % 16):
|
if not ((npass := npass + 1) % 16):
|
||||||
await asyncio.sleep_ms(0) # Control blocking time
|
await asyncio.sleep_ms(0) # Control blocking time
|
||||||
self._updated.set()
|
self.updated.set()
|
||||||
self.send_command(b"\x12") # Nonblocking .display_on()
|
self._command(b"\x12") # Nonblocking .display_on()
|
||||||
while not self.busy_pin(): # Wait on display hardware
|
while not self._busy_pin(): # Wait on display hardware
|
||||||
await asyncio.sleep_ms(0)
|
await asyncio.sleep_ms(0)
|
||||||
self._busy = False
|
self._busy = False
|
||||||
|
self.complete.set()
|
||||||
|
|
||||||
async def do_refresh(self, split): # For micro-gui
|
# Specific method for micro-gui. Unsuitable EPD's lack this method. Micro-gui
|
||||||
assert (not self._busy), "Refresh while busy"
|
# does not test for asyncio as this is guaranteed to be up.
|
||||||
|
async def do_refresh(self, split):
|
||||||
|
assert not self._busy, "Refresh while busy"
|
||||||
await self._as_show() # split=5
|
await self._as_show() # split=5
|
||||||
|
|
||||||
def show(self): # nanogui
|
def show(self): # nanogui
|
||||||
if self._busy:
|
if self._busy:
|
||||||
raise RuntimeError('Cannot refresh: display is busy.')
|
raise RuntimeError("Cannot refresh: display is busy.")
|
||||||
self._busy = True # Immediate busy flag. Pin goes low much later.
|
self._busy = True # Immediate busy flag. Pin goes low much later.
|
||||||
if self._asyn:
|
if asyncio_running():
|
||||||
|
self.updated.clear()
|
||||||
|
self.complete.clear()
|
||||||
asyncio.create_task(self._as_show())
|
asyncio.create_task(self._as_show())
|
||||||
return
|
return
|
||||||
self.send_command(b"\x13")
|
self._command(b"\x13")
|
||||||
fbidx = 0 # Index into framebuf
|
fbidx = 0 # Index into framebuf
|
||||||
nbytes = len(self.ibuf) # Bytes to send
|
nbytes = len(self._ibuf) # Bytes to send
|
||||||
nleft = len(self.buf) # Size of framebuf
|
nleft = len(self._buf) # Size of framebuf
|
||||||
while nleft > 0:
|
while nleft > 0:
|
||||||
self._bsend(fbidx, nbytes) # Invert, buffer and send nbytes
|
self._bsend(fbidx, nbytes) # Invert, buffer and send nbytes
|
||||||
fbidx += nbytes # Adjust for bytes already sent
|
fbidx += nbytes # Adjust for bytes already sent
|
||||||
|
|
@ -308,10 +277,14 @@ class EPD(framebuf.FrameBuffer):
|
||||||
nbytes = min(nbytes, nleft)
|
nbytes = min(nbytes, nleft)
|
||||||
self._busy = False
|
self._busy = False
|
||||||
self.display_on()
|
self.display_on()
|
||||||
|
if not self.demo_mode:
|
||||||
|
# Immediate return to avoid blocking the whole application.
|
||||||
|
# User should wait for ready before calling refresh()
|
||||||
|
return
|
||||||
self.wait_until_ready()
|
self.wait_until_ready()
|
||||||
|
time.sleep_ms(2000) # Demo mode: give time for user to see result
|
||||||
|
|
||||||
def sleep(self):
|
def sleep(self):
|
||||||
# self.send_command(b"\x02") # power off
|
# self._command(b"\x02") # power off
|
||||||
# self.wait_until_ready()
|
# self.wait_until_ready()
|
||||||
self.send_command(b"\x07") # deep sleep
|
self._command(b"\x07", b"\xA5") # deep sleep
|
||||||
self.send_bytes(b"\xA5")
|
|
||||||
|
|
|
||||||
Ładowanie…
Reference in New Issue