180 lines
No EOL
5.8 KiB
Python
180 lines
No EOL
5.8 KiB
Python
from DisplayAdapter import DisplayAdapter
|
|
import spidev
|
|
import RPi.GPIO as GPIO
|
|
import time
|
|
from PIL import Image
|
|
|
|
RST_PIN = 17
|
|
DC_PIN = 25
|
|
CS_PIN = 8
|
|
BUSY_PIN = 24
|
|
|
|
# Commands
|
|
PANEL_SETTING = 0x00
|
|
POWER_SETTING = 0x01
|
|
POWER_OFF = 0x02
|
|
POWER_OFF_SEQUENCE_SETTING = 0x03
|
|
POWER_ON = 0x04
|
|
POWER_ON_MEASURE = 0x05
|
|
BOOSTER_SOFT_START = 0x06
|
|
DEEP_SLEEP = 0x07
|
|
DATA_START_TRANSMISSION_1 = 0x10
|
|
DATA_STOP = 0x11
|
|
DISPLAY_REFRESH = 0x12
|
|
IMAGE_PROCESS = 0x13
|
|
LUT_FOR_VCOM = 0x20
|
|
LUT_BLUE = 0x21
|
|
LUT_WHITE = 0x22
|
|
LUT_GRAY_1 = 0x23
|
|
LUT_GRAY_2 = 0x24
|
|
LUT_RED_0 = 0x25
|
|
LUT_RED_1 = 0x26
|
|
LUT_RED_2 = 0x27
|
|
LUT_RED_3 = 0x28
|
|
LUT_XON = 0x29
|
|
PLL_CONTROL = 0x30
|
|
TEMPERATURE_SENSOR_COMMAND = 0x40
|
|
TEMPERATURE_CALIBRATION = 0x41
|
|
TEMPERATURE_SENSOR_WRITE = 0x42
|
|
TEMPERATURE_SENSOR_READ = 0x43
|
|
VCOM_AND_DATA_INTERVAL_SETTING = 0x50
|
|
LOW_POWER_DETECTION = 0x51
|
|
TCON_SETTING = 0x60
|
|
TCON_RESOLUTION = 0x61
|
|
SPI_FLASH_CONTROL = 0x65
|
|
REVISION = 0x70
|
|
GET_STATUS = 0x71
|
|
AUTO_MEASUREMENT_VCOM = 0x80
|
|
READ_VCOM_VALUE = 0x81
|
|
VCM_DC_SETTING = 0x82
|
|
|
|
class EpdAdapter (DisplayAdapter):
|
|
"""Generalized adapter for epd7in5 and epd7in5b"""
|
|
def __init__ (self, width, height):
|
|
super(EpdAdapter, self).__init__(width, height)
|
|
|
|
self.reset_pin = RST_PIN
|
|
self.dc_pin = DC_PIN
|
|
self.busy_pin = BUSY_PIN
|
|
|
|
self.epd_init()
|
|
|
|
def display_frame (self, frame_buffer):
|
|
raise NotImplementedError("Functions needs to be implemented")
|
|
|
|
def get_frame_buffer (self, image):
|
|
raise NotImplementedError("Functions needs to be implemented")
|
|
|
|
def render (self, design):
|
|
self.init_render()
|
|
time.sleep(5)
|
|
|
|
print('Converting image to data and sending it to the display')
|
|
print('This may take a while...' + '\n')
|
|
prepared_image = design.rotate(270, expand=1)
|
|
self.display_frame(self.get_frame_buffer(prepared_image))
|
|
|
|
# Powering off the E-Paper until the next loop
|
|
self.sleep()
|
|
print('Data sent successfully')
|
|
print('Powering off the E-Paper until the next loop' + '\n')
|
|
|
|
def init_render (self):
|
|
if (self.epd_init() != 0):
|
|
return -1
|
|
self.reset()
|
|
|
|
self.send_command(POWER_SETTING)
|
|
self.send_data(0x37)
|
|
self.send_data(0x00)
|
|
|
|
self.send_command(PANEL_SETTING)
|
|
self.send_data(0xCF)
|
|
self.send_data(0x08)
|
|
|
|
self.send_command(BOOSTER_SOFT_START)
|
|
self.send_data(0xc7)
|
|
self.send_data(0xcc)
|
|
self.send_data(0x28)
|
|
|
|
self.send_command(POWER_ON)
|
|
self.wait_until_idle()
|
|
|
|
self.send_command(PLL_CONTROL)
|
|
self.send_data(0x3c)
|
|
|
|
self.send_command(TEMPERATURE_CALIBRATION)
|
|
self.send_data(0x00)
|
|
|
|
self.send_command(VCOM_AND_DATA_INTERVAL_SETTING)
|
|
self.send_data(0x77)
|
|
|
|
self.send_command(TCON_SETTING)
|
|
self.send_data(0x22)
|
|
|
|
self.send_command(TCON_RESOLUTION)
|
|
self.send_data(0x02) #source 640
|
|
self.send_data(0x80)
|
|
self.send_data(0x01) #gate 384
|
|
self.send_data(0x80)
|
|
|
|
self.send_command(VCM_DC_SETTING)
|
|
self.send_data(0x1E) #decide by LUT file
|
|
|
|
self.send_command(0xe5) #FLASH MODE
|
|
self.send_data(0x03)
|
|
|
|
def digital_write (self, pin, value):
|
|
GPIO.output(pin, value)
|
|
|
|
def digital_read (self, pin):
|
|
return GPIO.input(pin)
|
|
|
|
def delay_ms (self, delaytime):
|
|
time.sleep(delaytime / 1000.0)
|
|
|
|
def spi_transfer (self, data):
|
|
self.SPI.writebytes(data)
|
|
|
|
def epd_init (self):
|
|
# SPI device, bus = 0, device = 0
|
|
self.SPI = spidev.SpiDev(0, 0)
|
|
#self.SPI.no_cs = True
|
|
|
|
GPIO.setmode(GPIO.BCM)
|
|
GPIO.setwarnings(False)
|
|
GPIO.setup(RST_PIN, GPIO.OUT)
|
|
GPIO.setup(DC_PIN, GPIO.OUT)
|
|
GPIO.setup(CS_PIN, GPIO.OUT)
|
|
GPIO.setup(BUSY_PIN, GPIO.IN)
|
|
self.SPI.max_speed_hz = 2000000
|
|
self.SPI.mode = 0b00
|
|
return 0
|
|
|
|
def sleep (self):
|
|
self.send_command(POWER_OFF)
|
|
self.wait_until_idle()
|
|
self.send_command(DEEP_SLEEP)
|
|
self.send_data(0xa5)
|
|
|
|
def wait_until_idle (self):
|
|
while(self.digital_read(self.busy_pin) == 0): # 0: busy, 1: idle
|
|
self.delay_ms(100)
|
|
|
|
def reset (self):
|
|
self.digital_write(self.reset_pin, GPIO.LOW) # module reset
|
|
self.delay_ms(200)
|
|
self.digital_write(self.reset_pin, GPIO.HIGH)
|
|
self.delay_ms(200)
|
|
|
|
def send_command (self, command):
|
|
self.digital_write(self.dc_pin, GPIO.LOW)
|
|
# the parameter type is list but not int
|
|
# so use [command] instead of command
|
|
self.spi_transfer([ command ])
|
|
|
|
def send_data (self, data):
|
|
self.digital_write(self.dc_pin, GPIO.HIGH)
|
|
# the parameter type is list but not int
|
|
# so use [data] instead of data
|
|
self.spi_transfer([ data ]) |