Add files via upload
This commit is contained in:
Ace
GitHub
parent
95289d90bd
commit
bcfd8797b7
309
Inky-Calendar/modules/inkycal_drivers.py
Normal file
309
Inky-Calendar/modules/inkycal_drivers.py
Normal file
@ -0,0 +1,309 @@
|
||||
#!/usr/bin/python3
|
||||
# -*- coding: utf-8 -*-
|
||||
"""
|
||||
Drivers file for Inky-Calendar software.
|
||||
Handles E-Paper display related tasks
|
||||
"""
|
||||
|
||||
from PIL import Image
|
||||
import RPi.GPIO as GPIO
|
||||
from settings import display_type
|
||||
import numpy
|
||||
import spidev
|
||||
import RPi.GPIO as GPIO
|
||||
from time import sleep
|
||||
|
||||
RST_PIN = 17
|
||||
DC_PIN = 25
|
||||
CS_PIN = 8
|
||||
BUSY_PIN = 24
|
||||
|
||||
EPD_WIDTH = 640
|
||||
EPD_HEIGHT = 384
|
||||
|
||||
SPI = spidev.SpiDev(0, 0)
|
||||
|
||||
def epd_digital_write(pin, value):
|
||||
GPIO.output(pin, value)
|
||||
|
||||
def epd_digital_read(pin):
|
||||
return GPIO.input(BUSY_PIN)
|
||||
|
||||
def epd_delay_ms(delaytime):
|
||||
sleep(delaytime / 1000.0)
|
||||
|
||||
def spi_transfer(data):
|
||||
SPI.writebytes(data)
|
||||
|
||||
def epd_init():
|
||||
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)
|
||||
SPI.max_speed_hz = 2000000
|
||||
SPI.mode = 0b00
|
||||
return 0;
|
||||
|
||||
# EPD7IN5 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 EPD:
|
||||
def __init__(self):
|
||||
self.reset_pin = RST_PIN
|
||||
self.dc_pin = DC_PIN
|
||||
self.busy_pin = BUSY_PIN
|
||||
self.width = EPD_WIDTH
|
||||
self.height = EPD_HEIGHT
|
||||
|
||||
def digital_write(self, pin, value):
|
||||
epd_digital_write(pin, value)
|
||||
|
||||
def digital_read(self, pin):
|
||||
return epd_digital_read(pin)
|
||||
|
||||
def delay_ms(self, delaytime):
|
||||
epd_delay_ms(delaytime)
|
||||
|
||||
def send_command(self, command):
|
||||
self.digital_write(self.dc_pin, GPIO.LOW)
|
||||
spi_transfer([command])
|
||||
|
||||
def send_data(self, data):
|
||||
self.digital_write(self.dc_pin, GPIO.HIGH)
|
||||
spi_transfer([data])
|
||||
|
||||
def init(self):
|
||||
if (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 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 calibrate_display(no_of_cycles):
|
||||
"""Function for Calibration"""
|
||||
black = Image.new('1', (EPD_WIDTH, EPD_HEIGHT), 'black')
|
||||
white = Image.new('1', (EPD_WIDTH, EPD_HEIGHT), 'white')
|
||||
red = Image.new('RGB', (EPD_WIDTH, EPD_HEIGHT), 'red')
|
||||
print('----------Started calibration of E-Paper display----------')
|
||||
for _ in range(no_of_cycles):
|
||||
print('Calibrating black...')
|
||||
self.show_image(black)
|
||||
if display_type == "colour":
|
||||
print('calibrating red...')
|
||||
self.show_image(red)
|
||||
print('Calibrating white...')
|
||||
self.show_image(white)
|
||||
|
||||
print('Cycle {0} of {1} complete'.format(_+1, no_of_cycles))
|
||||
print('-----------Calibration complete----------')
|
||||
|
||||
def reduce_colours(self, image):
|
||||
buffer = numpy.array(image)
|
||||
r,g,b = buffer[:,:,0], buffer[:,:,1], buffer[:,:,2]
|
||||
|
||||
if display_type == "colour":
|
||||
buffer[numpy.logical_and(r > 245, g > 245)] = [255,255,255] #white
|
||||
buffer[numpy.logical_and(r > 245, g < 245)] = [255,0,0] #red
|
||||
buffer[numpy.logical_and(r != 255, r == g )] = [0,0,0] #black
|
||||
|
||||
if display_type == "black_and_white":
|
||||
buffer[numpy.logical_and(r > 245, g > 245)] = [255,255,255] #white
|
||||
buffer[g < 255] = [0,0,0] #black
|
||||
|
||||
image = Image.fromarray(buffer)
|
||||
return image
|
||||
|
||||
def get_frame_buffer(self, image):
|
||||
imwidth, imheight = image.size
|
||||
if imwidth == self.height and imheight == self.width:
|
||||
image = image.rotate(270, expand = True)
|
||||
print('Rotated image by 270 degrees...', end= '')
|
||||
elif imwidth != self.width or imheight != self.height:
|
||||
raise ValueError('Image must be same dimensions as display \
|
||||
({0}x{1}).' .format(self.width, self.height))
|
||||
else:
|
||||
print('Image size OK')
|
||||
imwidth, imheight = image.size
|
||||
|
||||
if display_type == 'colour':
|
||||
buf = [0x00] * int(self.width * self.height / 4)
|
||||
image_grayscale = image.convert('L', dither=None)
|
||||
pixels = image_grayscale.load()
|
||||
|
||||
for y in range(self.height):
|
||||
for x in range(self.width):
|
||||
# Set the bits for the column of pixels at the current position.
|
||||
if pixels[x, y] == 0: # black
|
||||
buf[int((x + y * self.width) / 4)] &= ~(0xC0 >> (x % 4 * 2))
|
||||
elif pixels[x, y] == 76: # convert gray to red
|
||||
buf[int((x + y * self.width) / 4)] &= ~(0xC0 >> (x % 4 * 2))
|
||||
buf[int((x + y * self.width) / 4)] |= 0x40 >> (x % 4 * 2)
|
||||
else: # white
|
||||
buf[int((x + y * self.width) / 4)] |= 0xC0 >> (x % 4 * 2)
|
||||
|
||||
if display_type == 'black_and_white':
|
||||
buf = [0x00] * int(self.width * self.height / 8)
|
||||
image_monocolor = image.convert('1')
|
||||
|
||||
pixels = image_monocolor.load()
|
||||
for y in range(self.height):
|
||||
for x in range(self.width):
|
||||
# Set the bits for the column of pixels at the current position.
|
||||
if pixels[x, y] != 0:
|
||||
buf[int((x + y * self.width) / 8)] |= 0x80 >> (x % 8)
|
||||
|
||||
return buf
|
||||
|
||||
def display_frame(self, frame_buffer):
|
||||
self.send_command(DATA_START_TRANSMISSION_1)
|
||||
if display_type == 'colour':
|
||||
for i in range(0, int(self.width / 4 * self.height)):
|
||||
temp1 = frame_buffer[i]
|
||||
j = 0
|
||||
while (j < 4):
|
||||
if ((temp1 & 0xC0) == 0xC0):
|
||||
temp2 = 0x03
|
||||
elif ((temp1 & 0xC0) == 0x00):
|
||||
temp2 = 0x00
|
||||
else:
|
||||
temp2 = 0x04
|
||||
temp2 = (temp2 << 4) & 0xFF
|
||||
temp1 = (temp1 << 2) & 0xFF
|
||||
j += 1
|
||||
if((temp1 & 0xC0) == 0xC0):
|
||||
temp2 |= 0x03
|
||||
elif ((temp1 & 0xC0) == 0x00):
|
||||
temp2 |= 0x00
|
||||
else:
|
||||
temp2 |= 0x04
|
||||
temp1 = (temp1 << 2) & 0xFF
|
||||
self.send_data(temp2)
|
||||
j += 1
|
||||
|
||||
if display_type == 'black_and_white':
|
||||
for i in range(0, 30720):
|
||||
temp1 = frame_buffer[i]
|
||||
j = 0
|
||||
while (j < 8):
|
||||
if(temp1 & 0x80):
|
||||
temp2 = 0x03
|
||||
else:
|
||||
temp2 = 0x00
|
||||
temp2 = (temp2 << 4) & 0xFF
|
||||
temp1 = (temp1 << 1) & 0xFF
|
||||
j += 1
|
||||
if(temp1 & 0x80):
|
||||
temp2 |= 0x03
|
||||
else:
|
||||
temp2 |= 0x00
|
||||
temp1 = (temp1 << 1) & 0xFF
|
||||
self.send_data(temp2)
|
||||
j += 1
|
||||
|
||||
self.send_command(DISPLAY_REFRESH)
|
||||
self.delay_ms(100)
|
||||
self.wait_until_idle()
|
||||
|
||||
def show_image(self, image, reduce_colours = True):
|
||||
print('Initialising E-Paper Display...', end='')
|
||||
self.init()
|
||||
sleep(5)
|
||||
print('Done')
|
||||
|
||||
if reduce_colours == True:
|
||||
print('Optimising Image for E-Paper displays...', end = '')
|
||||
image = self.reduce_colours(image)
|
||||
print('Done')
|
||||
else:
|
||||
print('No colour optimisation done on image')
|
||||
|
||||
print('Creating image buffer and sending it to E-Paper display...', end='')
|
||||
data = self.get_frame_buffer(image)
|
||||
print('Done')
|
||||
print('Refreshing display...', end = '')
|
||||
self.display_frame(data)
|
||||
print('Done')
|
||||
print('Sending E-Paper to deep sleep mode...',end='')
|
||||
self.sleep()
|
||||
print('Done')
|
||||
|
||||
def sleep(self):
|
||||
self.send_command(POWER_OFF)
|
||||
self.wait_until_idle()
|
||||
self.send_command(DEEP_SLEEP)
|
||||
self.send_data(0xa5)
|
||||
Loading…
Reference in New Issue
Block a user