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update the simpletest to generalize the display setup #1

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Jul 22, 2020
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update the simpletest to generalize the display setup #1

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102 changes: 52 additions & 50 deletions examples/display_shapes_sparkline_simpletest.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,67 +29,69 @@
import random
import time
from adafruit_display_shapes.sparkline import Sparkline
from adafruit_ili9341 import ILI9341

from adafruit_display_text import label

import gc

# from sparkline import sparkline # use this if sparkline.py is used to define the sparkline Class


# Setup the LCD display

displayio.release_displays()


# setup the SPI bus
spi = board.SPI()
tft_cs = board.D9 # arbitrary, pin not used
tft_dc = board.D10
tft_backlight = board.D12
tft_reset = board.D11

while not spi.try_lock():
spi.configure(baudrate=32000000)
pass
spi.unlock()

display_bus = displayio.FourWire(
spi,
command=tft_dc,
chip_select=tft_cs,
reset=tft_reset,
baudrate=32000000,
polarity=1,
phase=1,
)

print("spi.frequency: {}".format(spi.frequency))

# Number of pixels in the display
DISPLAY_WIDTH = 320
DISPLAY_HEIGHT = 240

# create the display
display = ILI9341(
display_bus,
width=DISPLAY_WIDTH,
height=DISPLAY_HEIGHT,
rotation=180,
auto_refresh=True,
native_frames_per_second=90,
)

# reset the display to show nothing.
display.show(None)
if "DISPLAY" not in dir(board):
# Setup the LCD display with driver
from adafruit_ili9341 import ILI9341

displayio.release_displays()

# setup the SPI bus
spi = board.SPI()
tft_cs = board.D9 # arbitrary, pin not used
tft_dc = board.D10
tft_backlight = board.D12
tft_reset = board.D11

while not spi.try_lock():
spi.configure(baudrate=32000000)
pass
spi.unlock()

display_bus = displayio.FourWire(
spi,
command=tft_dc,
chip_select=tft_cs,
reset=tft_reset,
baudrate=32000000,
polarity=1,
phase=1,
)

print("spi.frequency: {}".format(spi.frequency))

# Number of pixels in the display
DISPLAY_WIDTH = 320
DISPLAY_HEIGHT = 240

# create the display
display = ILI9341(
display_bus,
width=DISPLAY_WIDTH,
height=DISPLAY_HEIGHT,
rotation=180,
auto_refresh=True,
native_frames_per_second=90,
)

# reset the display to show nothing.
display.show(None)
else:
# built-in display
display = board.DISPLAY

##########################################
# Create background bitmaps and sparklines
##########################################

# Baseline size of the sparkline chart, in pixels.
chartWidth = DISPLAY_WIDTH
chartHeight = DISPLAY_HEIGHT
chartWidth = display.width
chartHeight = display.height


# mySparkline1 uses a vertical y range between 0 to 10 and will contain a maximum of 40 items
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