SunFounder Thales Kit, Manual

Page: 107 / 167

SunFounder Thales Kit for Raspberry Pi Pico, Release 1.0
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self . bus . writeto( self . addr, bytearray ([ 0x08 ]))
def write_word ( self , data):
temp = data
if self . blen == 1 :
temp |= 0x08
else :
temp &= 0xF7
self . bus . writeto( self . addr, bytearray ([temp]))
def send_command ( self , cmd):
# Send bit7-4 firstly
buf = cmd & 0xF0
buf |= 0x04 # RS = 0, RW = 0, EN = 1
self . write_word(buf)
time . sleep( 0.002 )
buf &= 0xFB # Make EN = 0
self . write_word(buf)
# Send bit3-0 secondly
buf = (cmd & 0x0F ) << 4
buf |= 0x04 # RS = 0, RW = 0, EN = 1
self . write_word(buf)
time . sleep( 0.002 )
buf &= 0xFB # Make EN = 0
self . write_word(buf)
def send_data ( self , data):
# Send bit7-4 firstly
buf = data & 0xF0
buf |= 0x05 # RS = 1, RW = 0, EN = 1
self . write_word(buf)
time . sleep( 0.002 )
buf &= 0xFB # Make EN = 0
self . write_word(buf)
# Send bit3-0 secondly
buf = (data & 0x0F ) << 4
buf |= 0x05 # RS = 1, RW = 0, EN = 1
self . write_word(buf)
time . sleep( 0.002 )
buf &= 0xFB # Make EN = 0
self . write_word(buf)
def clear ( self ):
self . send_command( 0x01 ) # Clear Screen
def openlight ( self ): # Enable the backlight
self . bus . writeto( self . addr, bytearray ([ 0x08 ]))
# self.bus.close()
def write ( self , x, y, str ):
if x < 0 :
x = 0
if x > 15 :
x = 15
if y < 0 :
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3.4. Projects 103