40 lines
874 B
Python
40 lines
874 B
Python
import serial
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class LCDScreen(object):
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def _command(self, command):
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self.serial.write("\xFE" + chr(command))
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self.serial.flush()
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def clear(self):
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self._command(1)
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def home(self):
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self._command(2)
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def blank(self):
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self._command(8)
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def unblank(self):
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self._command(12)
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def location(self, x, y):
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self._command(128 + 0x40*y + x)
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def text(self, text):
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sanitized = "".join(c for c in text if c.lower() in "1234567890abcdefghjiklmnopqrstuvwxyz{}[]/+-_. ")
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self.serial.write(sanitized)
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self.serial.flush()
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def text_at(self, x, y, text):
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self.location(x, y)
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self.text(text)
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def __init__(self):
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self.serial = serial.Serial("/dev/ttyS1", 2400)
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self.clear()
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self.home()
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def close(self):
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self.serial.close()
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