def test_init_84x48():
pcd8544(serial, gpio=Mock())
serial.command.assert_has_calls(
[call(33, 20, 176, 32),
call(32, 128, 64), call(12)])
# Next 1024 are all data: zero's to clear the RAM
# (1024 = 128 * 64 / 8)
serial.data.assert_called_once_with([0] * (84 * 48 // 8))
def test_init_84x48():
pcd8544(serial)
serial.command.assert_has_calls([
call(33, 20, 176, 32),
call(32, 128, 64),
call(12)
])
# Next 1024 are all data: zero's to clear the RAM
# (1024 = 128 * 64 / 8)
serial.data.assert_called_once_with([0] * (84 * 48 // 8))
def test_display():
device = pcd8544(serial, gpio=Mock())
serial.reset_mock()
# Use the same drawing primitives as the demo
with canvas(device) as draw:
primitives(device, draw)
# Initial command to reset the display
serial.command.assert_called_once_with(32, 128, 64)
# Next 1024 bytes are data representing the drawn image
serial.data.assert_called_once_with(get_reference_data('demo_pcd8544'))
def test_display():
device = pcd8544(serial)
serial.reset_mock()
# Use the same drawing primitives as the demo
with canvas(device) as draw:
primitives(device, draw)
# Initial command to reset the display
serial.command.assert_called_once_with(32, 128, 64)
# Next 1024 bytes are data representing the drawn image
serial.data.assert_called_once_with(get_reference_data('demo_pcd8544'))
def test_display():
device = pcd8544(serial, gpio=Mock())
serial.reset_mock()
# Use the same drawing primitives as the demo
with canvas(device) as draw:
primitives(device, draw)
# Initial command to reset the display
serial.command.assert_called_once_with(32, 128, 64)
# To regenerate test data, uncomment the following (remember not to commit though)
# ================================================================================
# from baseline_data import save_reference_data
# save_reference_data("demo_pcd8544", serial.data.call_args.args[0])
# Next 1024 bytes are data representing the drawn image
serial.data.assert_called_once_with(get_reference_data('demo_pcd8544'))
def test_show():
device = pcd8544(serial, gpio=Mock())
serial.reset_mock()
device.show()
serial.command.assert_called_once_with(12)
def test_show():
device = pcd8544(serial)
serial.reset_mock()
device.show()
serial.command.assert_called_once_with(12)
def test_hide():
device = pcd8544(serial)
serial.reset_mock()
device.hide()
serial.command.assert_called_once_with(8)
#! /usr/bin/python
from luma.core.interface.serial import spi
from luma.core.render import canvas
from luma.lcd.device import pcd8544, st7735, uc1701x
from RPi import GPIO
from luma.lcd.aux import backlight
serial = spi(port=0, device=0, gpio_DC=23, gpio_RST=24)
channel = 18
light = backlight(gpio_LIGHT=channel, active_low=False)
light.enable(True)
device = pcd8544(serial, rotate=2)
with canvas(device) as draw:
draw.rectangle(device.bounding_box, outline="white", fill="black")
draw.text((10, 10), "阿湘！", fill="red")
raw_input("Here")
def test_hide():
device = pcd8544(serial)
serial.reset_mock()
device.hide()
serial.command.assert_called_once_with(8)
RST = 24
SPI_PORT = 0
SPI_DEVICE = 0
# Beaglebone Black hardware SPI config:
# DC = 'P9_15'
# RST = 'P9_12'
# SPI_PORT = 1
# SPI_DEVICE = 0
# Hardware SPI usage:
if configure.pc:
device = pygame(width=84, height=48, mode="1")
else:
serial = spi(port=SPI_PORT, device=SPI_DEVICE, gpio_DC=DC, gpio_RST=RST)
device = pcd8544(serial)
device.contrast(50)
fore_col = 0
back_col = 1
# Controls text objects drawn to the LCD
class LabelObj(object):
def __init__(self, string, font, draw):
self.font = font
self.draw = draw
self.string = string
def push(self, locx, locy):
self.draw.text((locx, locy),