47 lines
No EOL
1.8 KiB
Python
47 lines
No EOL
1.8 KiB
Python
from EpdAdapter import EpdAdapter, DISPLAY_REFRESH, DATA_START_TRANSMISSION_1
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class Epd7in5Adapter (EpdAdapter):
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def __init__ ():
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super(Epd7in5Adapter, self).__init__(640, 384)
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def display_frame (self, frame_buffer):
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self.send_command(DATA_START_TRANSMISSION_1)
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for i in range(0, 30720):
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temp1 = frame_buffer[i]
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j = 0
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while (j < 8):
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if(temp1 & 0x80):
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temp2 = 0x03
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else:
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temp2 = 0x00
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temp2 = (temp2 << 4) & 0xFF
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temp1 = (temp1 << 1) & 0xFF
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j += 1
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if(temp1 & 0x80):
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temp2 |= 0x03
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else:
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temp2 |= 0x00
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temp1 = (temp1 << 1) & 0xFF
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self.send_data(temp2)
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j += 1
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self.send_command(DISPLAY_REFRESH)
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self.delay_ms(100)
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self.wait_until_idle()
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def get_frame_buffer (self, image):
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buf = [0x00] * int(self.width * self.height / 8)
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# Set buffer to value of Python Imaging Library image.
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# Image must be in mode 1.
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image_monocolor = image.convert('1') #with ot withour dithering?
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imwidth, imheight = image_monocolor.size
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if imwidth != self.width or imheight != self.height:
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raise ValueError('Image must be same dimensions as display \
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({0}x{1}).' .format(self.width, self.height))
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pixels = image_monocolor.load()
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for y in range(self.height):
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for x in range(self.width):
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# Set the bits for the column of pixels at the current position.
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if pixels[x, y] != 0:
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buf[int((x + y * self.width) / 8)] |= 0x80 >> (x % 8)
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return buf |