def set_px(self, x, y, color):
page, shiftPage = divmod(y, 8)
i = x + page * 128 + 1
b = self.screen[i] | (
1 << shiftPage) if color else self.screen[i] & ~(1 << shiftPage)
self.screen[i] = b
self.__set_pos(x, page)
spi.write(bytearray([b]))
def NFC_write_register(register, value):
bregister = bytearray([register])
bvalue = bytearray([value])
CS_PIN.write_digital(0)
spi.write(bregister)
# need to think about writing a loop for multi byte write
spi.write(bvalue)
CS_PIN.write_digital(1)
def init(self): #set buf with setup commands, turn on display, clear display and make ready for commands buf = bytearray([self.FUNCTION_SET1_CMD, self.DISPLAY_ON, self.CLEAR_DISPLAY, 0x06]) #set the spi pins and frequency spi.init(baudrate=250000, bits=8, mode=0, sclk=pin13, mosi=pin15, miso=pin14) sleep(1000) #send setup to the LCD spi.write(buf) self.initalised = True
def NFC_read_register(register):
CS_PIN.write_digital(0)
data = bytearray([0x80 | register])
spi.write(data)
# spi.write(0x00)#maybe?
value = 0xff
value = spi.read(1)
CS_PIN.write_digital(1)
return int(value[0])
def displayStringOnLine(self, lcdLineAddr, text): # display string on a selected line of the LCD
textLoop = 0
lengthOfText = len(text)
#if the text is less than 16 charectors, fill the rest with white spaces
if lengthOfText < 16:
lcdLengthToAdd = 16 - lengthOfText
for textLoop in range (0, lcdLengthToAdd):
text = text + ' '
textLoop = 0
#Send command byte and set which line of the LCD is being written to
buf = bytearray([self.FUNCTION_SET1_CMD, lcdLineAddr])
spi.write(buf)
#Send command byte and set how many bytes are being sent
buf = bytearray([self.FUNCTION_SET2_CMD, 0x8F])
spi.write(buf)
#send all string letters into byte array as int to send all together
buf = bytearray([ord(text[0]),ord(text[1]),ord(text[2]),ord(text[3]),ord(text[4]),ord(text[5]),ord(text[6]),ord(text[7]),ord(text[8]),ord(text[9]),ord(text[10]),ord(text[11]),ord(text[12]),ord(text[13]),ord(text[14]),ord(text[15])])
#print(buf)
spi.write(buf)
def displayStringOnLine(self, lcdLineAddr, text): # display string on a selected line of the LCD
textLoop = 0
lengthOfText = len(text)
#if the text is less than 16 charectors, fill the rest with white spaces
if lengthOfText < 16:
lcdLengthToAdd = 16 - lengthOfText
for textLoop in range (0, lcdLengthToAdd):
text = text + ' '
textLoop = 0
#Send command byte and set which line of the LCD is being written to
buf = bytearray([self.FUNCTION_SET1_CMD, lcdLineAddr])
spi.write(buf)
#Send command byte and set how many bytes are being sent
buf = bytearray([self.FUNCTION_SET2_CMD, 0x8F])
spi.write(buf)
#send the display bytes to the LCD
for textLoop in range (16):
asciiNumber = text[textLoop]
buf = bytearray([ord(asciiNumber)])
spi.write(buf)
def show_bitmap(self, filename):
self.__set_pos()
with open(filename, 'rb') as my_file:
for i in range(0, 16):
spi.write(my_file.read(64))
def __cmd(self, c):
pin16.write_digital(0)
spi.write(bytearray(c))
pin16.write_digital(1)
def draw_screen(self):
self.__set_pos()
spi.write(self.screen)