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SSD1680_test.py
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#!/usr/bin/env python
"""
Marko Pinteric 2023
SSD1680 epaper controller test
- fast SPI communication using C code
- requires SSD1680.py and spi.so in the same folder
- data for fast transfer have to be supplied in contiguous block of bytes
- put spidev.bufsiz=65536 to the end of the line in /boot/cmdline.txt to allow large SPI transfers
for more information see: http://www.pinteric.com/displays.html
"""
from SSD1680 import SSD1680
import time
# used to form large contiguous block of bytes
import numpy
from ctypes import c_void_p
dogpicture = 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dtype='uint8')
ssd = SSD1680(4,17,27)
# print monospaced font text in a white (negative black) buffer
ssd.message_m("""
296 x 128 DISPLAY
SSD1680 CHIP
Raspberry Pi 4
To learn more about using and
programming the SSD1680 chip
in Python at Raspberry Pi,
visit
http://www.pinteric.com/displays.html
""",'c')
# refresh the screen for a single colour
ssd.display_black()
time.sleep(10)
# print monospaced font text over the existing in lines 9-14
ssd.message_m("""
Current time:
""",'c',8)
# refresh the screen for a single colour
ssd.display_black()
ssd.display_partial()
start=int(time.time())
past=1
while True:
while(time.time()-start>past): time.sleep(0.001)
# print monospaced font text with time in line 13
ssd.message_m(time.strftime('%H:%M:%S '),'c',12)
# partially refresh the screen
ssd.display_partial()
past=past+1
if past>11: break
# create frame in white (negative black) buffer
ssd.white.fill(~0x00)
for i in range (128//8):
ssd.white[i] = ssd.white[i] & ~0xFF
ssd.white[-i-1] = ssd.white[-i-1] & ~0xFF
for i in range (296):
ssd.white[i*128//8] = ssd.white[i*128//8] & ~0x80
ssd.white[(i+1)*128//8-1] = ssd.white[(i+1)*128//8-1] & ~0x01
# copy dog picture to red buffer
numpy.copyto(ssd.red,dogpicture)
# refresh the screen for both colours
ssd.display()
ssd.sleep()
ssd.close()