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pulsing-brightness.py

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+#!/usr/bin/env python
+from samplebase import SampleBase
+
+
+class GrayscaleBlock(SampleBase):
+    def __init__(self, *args, **kwargs):
+        super(GrayscaleBlock, self).__init__(*args, **kwargs)
+
+    def run(self):
+        max_brightness = self.matrix.brightness
+        count = 0
+        c = 255
+
+        while (True):
+            if self.matrix.brightness < 1:
+                self.matrix.brightness = max_brightness
+                count += 1
+            else:
+                self.matrix.brightness -= 1
+
+            if count % 4 == 0:
+                self.matrix.Fill(c, 0, 0)
+            elif count % 4 == 1:
+                self.matrix.Fill(0, c, 0)
+            elif count % 4 == 2:
+                self.matrix.Fill(0, 0, c)
+            elif count % 4 == 3:
+                self.matrix.Fill(c, c, c)
+
+            self.usleep(20 * 1000)
+
+# Main function
+if __name__ == "__main__":
+    grayscale_block = GrayscaleBlock()
+    if (not grayscale_block.process()):
+        grayscale_block.print_help()

pulsing-colors.py

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+#!/usr/bin/env python
+from samplebase import SampleBase
+
+
+class PulsingColors(SampleBase):
+    def __init__(self, *args, **kwargs):
+        super(PulsingColors, self).__init__(*args, **kwargs)
+
+    def run(self):
+        self.offscreen_canvas = self.matrix.CreateFrameCanvas()
+        continuum = 0
+
+        while True:
+            self.usleep(5 * 1000)
+            continuum += 1
+            continuum %= 3 * 255
+
+            red = 0
+            green = 0
+            blue = 0
+
+            if continuum <= 255:
+                c = continuum
+                blue = 255 - c
+                red = c
+            elif continuum > 255 and continuum <= 511:
+                c = continuum - 256
+                red = 255 - c
+                green = c
+            else:
+                c = continuum - 512
+                green = 255 - c
+                blue = c
+
+            self.offscreen_canvas.Fill(red, green, blue)
+            self.offscreen_canvas = self.matrix.SwapOnVSync(self.offscreen_canvas)
+
+# Main function
+if __name__ == "__main__":
+    pulsing_colors = PulsingColors()
+    if (not pulsing_colors.process()):
+        pulsing_colors.print_help()

samplebase.py

@@ -0,0 +1,81 @@
+import argparse
+import time
+import sys
+import os
+
+sys.path.append(os.path.abspath(os.path.dirname(__file__) + '/..'))
+from rgbmatrix import RGBMatrix, RGBMatrixOptions
+
+
+class SampleBase(object):
+    def __init__(self, *args, **kwargs):
+        self.parser = argparse.ArgumentParser()
+
+        self.parser.add_argument("-r", "--led-rows", action="store", help="Display rows. 16 for 16x32, 32 for 32x32. Default: 32", default=32, type=int)
+        self.parser.add_argument("--led-cols", action="store", help="Panel columns. Typically 32 or 64. (Default: 32)", default=32, type=int)
+        self.parser.add_argument("-c", "--led-chain", action="store", help="Daisy-chained boards. Default: 1.", default=1, type=int)
+        self.parser.add_argument("-P", "--led-parallel", action="store", help="For Plus-models or RPi2: parallel chains. 1..3. Default: 1", default=1, type=int)
+        self.parser.add_argument("-p", "--led-pwm-bits", action="store", help="Bits used for PWM. Something between 1..11. Default: 11", default=11, type=int)
+        self.parser.add_argument("-b", "--led-brightness", action="store", help="Sets brightness level. Default: 100. Range: 1..100", default=100, type=int)
+        self.parser.add_argument("-m", "--led-gpio-mapping", help="Hardware Mapping: regular, adafruit-hat, adafruit-hat-pwm" , choices=['regular', 'regular-pi1', 'adafruit-hat', 'adafruit-hat-pwm'], type=str)
+        self.parser.add_argument("--led-scan-mode", action="store", help="Progressive or interlaced scan. 0 Progressive, 1 Interlaced (default)", default=1, choices=range(2), type=int)
+        self.parser.add_argument("--led-pwm-lsb-nanoseconds", action="store", help="Base time-unit for the on-time in the lowest significant bit in nanoseconds. Default: 130", default=130, type=int)
+        self.parser.add_argument("--led-show-refresh", action="store_true", help="Shows the current refresh rate of the LED panel")
+        self.parser.add_argument("--led-slowdown-gpio", action="store", help="Slow down writing to GPIO. Range: 0..4. Default: 1", default=1, type=int)
+        self.parser.add_argument("--led-no-hardware-pulse", action="store", help="Don't use hardware pin-pulse generation")
+        self.parser.add_argument("--led-rgb-sequence", action="store", help="Switch if your matrix has led colors swapped. Default: RGB", default="RGB", type=str)
+        self.parser.add_argument("--led-pixel-mapper", action="store", help="Apply pixel mappers. e.g \"Rotate:90\"", default="", type=str)
+        self.parser.add_argument("--led-row-addr-type", action="store", help="0 = default; 1=AB-addressed panels; 2=row direct; 3=ABC-addressed panels; 4 = ABC Shift + DE direct", default=0, type=int, choices=[0,1,2,3,4])
+        self.parser.add_argument("--led-multiplexing", action="store", help="Multiplexing type: 0=direct; 1=strip; 2=checker; 3=spiral; 4=ZStripe; 5=ZnMirrorZStripe; 6=coreman; 7=Kaler2Scan; 8=ZStripeUneven... (Default: 0)", default=0, type=int)
+        self.parser.add_argument("--led-panel-type", action="store", help="Needed to initialize special panels. Supported: 'FM6126A'", default="", type=str)
+        self.parser.add_argument("--led-no-drop-privs", dest="drop_privileges", help="Don't drop privileges from 'root' after initializing the hardware.", action='store_false')
+        self.parser.set_defaults(drop_privileges=True)
+
+    def usleep(self, value):
+        time.sleep(value / 1000000.0)
+
+    def run(self):
+        print("Running")
+
+    def process(self):
+        self.args = self.parser.parse_args()
+
+        options = RGBMatrixOptions()
+
+        if self.args.led_gpio_mapping != None:
+          options.hardware_mapping = self.args.led_gpio_mapping
+        options.rows = self.args.led_rows
+        options.cols = self.args.led_cols
+        options.chain_length = self.args.led_chain
+        options.parallel = self.args.led_parallel
+        options.row_address_type = self.args.led_row_addr_type
+        options.multiplexing = self.args.led_multiplexing
+        options.pwm_bits = self.args.led_pwm_bits
+        options.brightness = self.args.led_brightness
+        options.pwm_lsb_nanoseconds = self.args.led_pwm_lsb_nanoseconds
+        options.led_rgb_sequence = self.args.led_rgb_sequence
+        options.pixel_mapper_config = self.args.led_pixel_mapper
+        options.panel_type = self.args.led_panel_type
+
+
+        if self.args.led_show_refresh:
+          options.show_refresh_rate = 1
+
+        if self.args.led_slowdown_gpio != None:
+            options.gpio_slowdown = self.args.led_slowdown_gpio
+        if self.args.led_no_hardware_pulse:
+          options.disable_hardware_pulsing = True
+        if not self.args.drop_privileges:
+          options.drop_privileges=False
+
+        self.matrix = RGBMatrix(options = options)
+
+        try:
+            # Start loop
+            print("Press CTRL-C to stop sample")
+            self.run()
+        except KeyboardInterrupt:
+            print("Exiting\n")
+            sys.exit(0)
+
+        return True