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Update display_manager.py

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timing adjustments to fight artifacts
This commit is contained in:
Chuck
2025-04-08 18:43:49 -05:00
parent ed35da47c2
commit 43d2c422ca
1 changed files with 34 additions and 15 deletions
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37
src/display_manager.py
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@@ -36,24 +36,25 @@ class DisplayManager:
options.parallel = hardware_config.get('parallel', 1) options.parallel = hardware_config.get('parallel', 1)
options.hardware_mapping = hardware_config.get('hardware_mapping', 'adafruit-hat-pwm') options.hardware_mapping = hardware_config.get('hardware_mapping', 'adafruit-hat-pwm')
# Optimize display settings for maximum visibility # Optimize display settings for chained panels
options.brightness = 100 options.brightness = 100
options.pwm_bits = 11 options.pwm_bits = 11
options.pwm_lsb_nanoseconds = 130 options.pwm_lsb_nanoseconds = 200 # Increased for better stability
options.led_rgb_sequence = 'RGB' options.led_rgb_sequence = 'RGB'
options.pixel_mapper_config = '' options.pixel_mapper_config = ''
options.row_address_type = 0 options.row_address_type = 0
options.multiplexing = 0 options.multiplexing = 0
options.disable_hardware_pulsing = True options.disable_hardware_pulsing = False # Enable hardware pulsing for better sync
options.show_refresh_rate = False options.show_refresh_rate = False
options.limit_refresh_rate_hz = 120 options.limit_refresh_rate_hz = 60 # Reduced refresh rate for stability
options.gpio_slowdown = 1 options.gpio_slowdown = 2 # Increased slowdown for better stability
# Initialize the matrix # Initialize the matrix
self.matrix = RGBMatrix(options=options) self.matrix = RGBMatrix(options=options)
# Create double buffer for smooth updates # Create double buffer for smooth updates
self.offscreen_canvas = self.matrix.CreateFrameCanvas() self.offscreen_canvas = self.matrix.CreateFrameCanvas()
self.current_canvas = self.matrix.CreateFrameCanvas()
# Create image with full chain width # Create image with full chain width
self.image = Image.new('RGB', (self.matrix.width, self.matrix.height)) self.image = Image.new('RGB', (self.matrix.width, self.matrix.height))
@@ -88,19 +89,37 @@ class DisplayManager:
time.sleep(2) time.sleep(2)
def update_display(self): def update_display(self):
"""Update the display using double buffering.""" """Update the display using double buffering with proper sync."""
try:
# Copy the current image to the offscreen canvas # Copy the current image to the offscreen canvas
self.offscreen_canvas.SetImage(self.image) self.offscreen_canvas.SetImage(self.image)
# Swap the canvases
self.offscreen_canvas = self.matrix.SwapOnVSync(self.offscreen_canvas) # Wait for the next vsync before swapping
self.matrix.SwapOnVSync(self.offscreen_canvas)
# Swap our canvas references
self.offscreen_canvas, self.current_canvas = self.current_canvas, self.offscreen_canvas
# Small delay to ensure stable refresh
time.sleep(0.001)
except Exception as e:
logger.error(f"Error updating display: {e}")
def clear(self): def clear(self):
"""Clear the display completely.""" """Clear the display completely."""
# Create a new image and drawing context try:
# Create a new black image
self.image = Image.new('RGB', (self.matrix.width, self.matrix.height)) self.image = Image.new('RGB', (self.matrix.width, self.matrix.height))
self.draw = ImageDraw.Draw(self.image) self.draw = ImageDraw.Draw(self.image)
# Clear both canvases
self.offscreen_canvas.Clear()
self.current_canvas.Clear()
# Update the display to show the clear # Update the display to show the clear
self.update_display() self.update_display()
except Exception as e:
logger.error(f"Error clearing display: {e}")
def _load_fonts(self): def _load_fonts(self):
"""Load fonts for different text sizes.""" """Load fonts for different text sizes."""