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t6963c.py
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"""
User mode device driver for display modules using
the Toshiba T6963C display controller.
Copyright (c) 2006 spacemarmot@users.sourceforge.net
This file is released under the GNU Lesser General Public Licence.
See the file LICENSE for details.
"""
MODE_CG_ROM = 0x80
MODE_OR = 0x80
MODE_AND = 0x83
DISPLAY_MODE_OFF = 0x90
DISPLAY_MODE_CURSOR = 0x92
DISPLAY_MODE_CURSOR_BLINK = 0x93
DISPLAY_MODE_TEXT = 0x94
DISPLAY_MODE_GRAPHICS = 0x98
try:
import parallel # http://pyserial.sourceforge.net/pyparallel
class T6963C(object):
def __init__(self, W=128, H=64, dev=0):
p = parallel.Parallel(dev)
# don't like this wiring? change it!
self.setWR = p.setDataStrobe # pin 1
self.setRD = p.setAutoFeed # pin 14
self.setCE = p.setInitOut # pin 16
self.setCD = p.setSelect # pin 17
self.setData = p.setData # pins 2-9
self.W = W
self.H = H
self.init()
def init(self):
self.setRD(1)
self.setWR(1)
self.setGraphicsHomeAddress(0)
self.setGraphicsArea(self.W/8)
self.setMode(MODE_CG_ROM | MODE_OR)
self.setDisplayMode(DISPLAY_MODE_GRAPHICS)
self.setAddressPointer(0)
self.autoWrite('\x00' * (self.W/8 * self.H))
self.setAddressPointer(0)
def sendCommand(self, cmd):
self.setCD(1)
self.setCE(0)
self.setWR(0)
self.setData(cmd)
self.setWR(1)
self.setCE(1)
def sendData(self, data):
self.setCD(0)
for c in data:
self.setCE(0)
self.setWR(0)
self.setData(ord(c))
self.setWR(1)
self.setCE(1)
def startAutoWrite(self):
self.sendCommand(0xB0)
def autoReset(self):
self.sendCommand(0xB2)
def autoWrite(self, data):
self.startAutoWrite()
self.sendData(data)
self.autoReset()
def setCursorPointer(self, x, y):
self.sendData('%c%c' % (x, y))
self.sendCommand(0x21)
def setOffsetPointer(self, offset):
self.sendData(chr(offset))
self.sendCommand(0x22)
def setAddressPointer(self, address):
self.sendData('%c%c' % (address%256, address/256))
self.sendCommand(0x24)
def setTextHomeAddress(self, address):
self.sendData('%c%c' % (address%256, address/256))
self.sendCommand(0x40)
def setTextArea(self, col):
self.sendData('%c%c' % (col,0) )
self.sendCommand(0x41)
def setGraphicsHomeAddress(self, address):
self.sendData('%c%c' % (address%256, address/256))
self.sendCommand(0x42)
def setGraphicsArea(self, col):
self.sendData('%c%c' % (col,0) )
self.sendCommand(0x43)
def setMode(self, mode):
self.sendCommand(mode)
def selectCursorPattern(self, pattern):
self.sendCommand(0xA0 + pattern)
def setDisplayMode(self, mode):
self.sendCommand(mode)
def writeData(self, data, autoincrement=1):
assert autoincrement in [-1,0,1]
assert 0
def setBit(self, bit, reset=False):
assert 0
except: pass
if __name__ == '__main__':
d = T6963C(128, 64, dev=0)
d.setTextHomeAddress(0)
d.setTextArea(d.W/8)
d.setAddressPointer(0)
d.setCursorPointer(0, 0)
d.setDisplayMode(DISPLAY_MODE_TEXT | DISPLAY_MODE_CURSOR_BLINK)
d.autoWrite('\x48\x45\x4c\x4c\x4f\x0c\x5f\x54\x16\x19\x16\x13\x43\x5f\x5f\x5f' * 8) # 'hello, t6963c '