alihan/st7735-python-pimoroni
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Port to gpiod/gpiodevice.

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This commit is contained in:
Phil Howard
2023-11-03 13:59:18 +00:00
parent 8e6cee4ef8
commit 2b1736c669
1 changed files with 20 additions and 17 deletions
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37
st7735/__init__.py
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@@ -20,14 +20,13 @@
# THE SOFTWARE.
import numbers
import time
import numpy as np
import spidev
import gpiod
import gpiodevice
import numpy as np
import spidev
from gpiod.line import Direction, Value
__version__ = '0.0.5'
OUTL = gpiod.LineSettings(direction=Direction.OUTPUT, output_value=Value.INACTIVE)
@@ -149,14 +148,15 @@ class ST7735(object):
self._spi.lsbfirst = False
self._spi.max_speed_hz = spi_speed_hz
self._dc = dc
self._rst = rst
self._width = width
self._height = height
self._rotation = rotation
self._invert = invert
self._bgr = bgr
self._bl = None
self._rst = None
# Default left offset to center display
if offset_left is None:
offset_left = (ST7735_COLS - width) // 2
@@ -172,23 +172,26 @@ class ST7735(object):
gpiodevice.friendly_errors = True
# Set DC as output.
self._dc_lines, self._dc_line = gpiodevice.get_pin(dc, "st7735-dc", OUTL)
self._dc = gpiodevice.get_pin(dc, "st7735-dc", OUTL)
# Setup backlight as output (if provided).
self._backlight = backlight
if backlight is not None:
self._bl_lines, self._bl_line = gpiodevice.get_pin(backlight, "st7735-bl", OUTL)
self._bl_lines.set_value(self._bl_line, Value.INACTIVE)
self._bl = gpiodevice.get_pin(backlight, "st7735-bl", OUTL)
self.set_pin(self._bl, False)
time.sleep(0.1)
self._bl_lines.set_value(self._bl_line, Value.ACTIVE)
self.set_pin(self._bl, True)
# Setup reset as output (if provided).
if rst is not None:
self._rst_lines, self._rst_line = gpiodevice.get_pin(rst, "st7735-rst", OUTL)
self._rst = gpiodevice.get_pin(rst, "st7735-rst", OUTL)
self.reset()
self._init()
def set_pin(self, pin, state):
lines, offset = pin
lines.set_value(offset, Value.ACTIVE if state else Value.INACTIVE)
def send(self, data, is_data=True, chunk_size=4096):
"""Write a byte or array of bytes to the display. Is_data parameter
controls if byte should be interpreted as display data (True) or command
@@ -196,7 +199,7 @@ class ST7735(object):
single SPI transaction, with a default of 4096.
"""
# Set DC low for command, high for data.
self._dc_lines.set_value(self._dc_line, Value.ACTIVE if is_data else Value.INACTIVE)
self.set_pin(self._dc, is_data)
# Convert scalar argument to list so either can be passed as parameter.
if isinstance(data, numbers.Number):
data = [data & 0xFF]
@@ -204,8 +207,8 @@ class ST7735(object):
def set_backlight(self, value):
"""Set the backlight on/off."""
if self._backlight is not None:
self._bl_lines.set_value(self._bl_line, Value.ACTIVE if value else Value.INACTIVE)
if self._bl is not None:
self.set_pin(self._bl, value)
def display_off(self):
self.command(ST7735_DISPOFF)
@@ -238,11 +241,11 @@ class ST7735(object):
def reset(self):
"""Reset the display, if reset pin is connected."""
if self._rst is not None:
self._rst_lines.set_value(self._rst_line, Value.ACTIVE)
self.set_pin(self._rst, True)
time.sleep(0.500)
self._rst_lines.set_value(self._rst_line, Value.INACTIVE)
self.set_pin(self._rst, False)
time.sleep(0.500)
self._rst_lines.set_value(self._rst_line, Value.ACTIVE)
self.set_pin(self._rst, True)
time.sleep(0.500)
def _init(self):