def backlight(status):
""" control backlight """
#wiringPy.digital_write(pin_LIGHT, 1 - status)
if status==0:
GPIO.output(pin_LIGHT, GPIO.HIGH)
else:
GPIO.output(pin_LIGHT, GPIO.LOW)
def send(cmd,type): GPIO.output(pin_CS, GPIO.LOW) if(type == SEND_CHR): GPIO.output(pin_DC, GPIO.HIGH) else: GPIO.output(pin_DC, GPIO.LOW) SPIsendByte(cmd) GPIO.output(pin_CS, GPIO.HIGH)
def bitmap(arr, dc):
""" write a sequence of bytes, either as data or command"""
#wiringPy.digital_write(pin_DC, dc)
#wiringPy.digital_write(pin_DC, dc)
if dc==ON:
GPIO.output(pin_DC, GPIO.HIGH)
else:
GPIO.output(pin_DC, GPIO.LOW)
#str=struct.pack('B'*len(arr), *arr)
#print(str)
#print(arr);
#for item in arr:
# writeonebyte(item)
#wiringPy.digital_write_serial_array(0, )
GPIO.bitbang(pin_CLK,pin_DIN,pin_CE,struct.pack('B'*len(arr), *arr))
def SPIsendByte(byteTosend): i = 0 for i in range(1,9): if (byteTosend & 0x80): GPIO.output(pin_MOSI, GPIO.HIGH) else: GPIO.output(pin_MOSI, GPIO.LOW) #sleep(0.00001) GPIO.output(pin_CLK, GPIO.LOW) #sleep(0.00001) GPIO.output(pin_CLK, GPIO.HIGH) byteTosend = byteTosend << 1 return
def init(CLK = 11, DIN = 10, DC = 23, RST = 24, LIGHT = 18, CE = 8, contrast = default_contrast):
""" init screen, clearscreen """
#wiringPy.debug(0)
#if wiringPy.setup_gpio() != 0:
# raise IOError("Failed to initialize wiringPy properly")
#fd = wiringPy.setup_bitbang(CE, DIN, CLK, 0)
#if fd == -1:
# raise IOError("Failed to initialize bitbang properly")
GPIO.init()
#pins = [CLK, DIN, DC, RST, LIGHT, CE]
pins = [pin_CLK, pin_DIN, pin_DC, pin_RST, pin_LIGHT, pin_CE]
#pin_CLK, pin_DIN, pin_DC, pin_RST, pin_LIGHT, pin_CE = pins
for pin in pins:
GPIO.setcfg(pin, GPIO.OUTPUT)
GPIO.output(pin,GPIO.HIGH)
#map(lambda p: , pins)
# Reset the device
GPIO.output(pin_RST, GPIO.LOW)
time.sleep(0.1)
GPIO.output(pin_RST, GPIO.HIGH)
set_contrast(contrast)
#command([0x26])
cls()
def init(): # SET CS HIGH GPIO.output(pin_CS, GPIO.HIGH) #Reset LCD GPIO.output(pin_RST, GPIO.LOW) sleep(1) GPIO.output(pin_RST, GPIO.HIGH) sleep(1) send(0x21,SEND_CMD) send(0xC8,SEND_CMD) send(0x04,SEND_CMD) send(0x40,SEND_CMD) send(0x12,SEND_CMD) send(0xE4,SEND_CMD)# Set Display offset line 1 send(0x45,SEND_CMD)# Set Display offset line 2: shiftet 5 pixels up and then use lines 1 to 6 send(0x20,SEND_CMD) send(0x08,SEND_CMD) send(0x0C,SEND_CMD) setContrast(DEFAULT_CONTRAST) clear() update()
def writeonebyte(data):
GPIO.output(pin_CE, GPIO.LOW)
#data=bit_reverse(data)
for i in range(0,8):
if testBit(data,i)!=0:
GPIO.output(pin_DIN, GPIO.HIGH)
#print("1")
else:
GPIO.output(pin_DIN, GPIO.LOW)
#print("0")
GPIO.output(pin_CLK, GPIO.LOW)
#time.sleep(0.01)
GPIO.output(pin_CLK, GPIO.HIGH)
GPIO.output(pin_CE, GPIO.HIGH)
