Initial commit

display/epdconfig.py

@@ -0,0 +1,118 @@
+# display/epdconfig.py
+
+import logging
+import time
+
+logger = logging.getLogger(__name__)
+
+
+class DummyGPIO:
+    BCM = OUT = IN = 0
+
+    @staticmethod
+    def setmode(*args):
+        pass
+
+    @staticmethod
+    def setwarnings(*args):
+        pass
+
+    @staticmethod
+    def setup(*args):
+        pass
+
+    @staticmethod
+    def output(*args):
+        pass
+
+    @staticmethod
+    def input(*args):
+        return 0
+
+    @staticmethod
+    def cleanup(*args):
+        pass
+
+
+class DummySPI:
+    max_speed_hz = 4000000
+    mode = 0b00
+
+    @staticmethod
+    def open(*args):
+        pass
+
+    @staticmethod
+    def writebytes(*args):
+        pass
+
+    @staticmethod
+    def writebytes2(*args):
+        pass
+
+    @staticmethod
+    def close():
+        pass
+
+
+try:
+    import RPi.GPIO as GPIO
+    import spidev
+
+    SPI = spidev.SpiDev()
+except ImportError:
+    logger.warning(
+        "RPi.GPIO or spidev not found. Using Dummy hardware drivers (Test Mode)."
+    )
+    GPIO = DummyGPIO()
+    SPI = DummySPI()
+
+RST_PIN = 17
+DC_PIN = 25
+CS_PIN = 8
+BUSY_PIN = 24
+PWR_PIN = 18
+
+
+def digital_write(pin, value):
+    GPIO.output(pin, value)
+
+
+def digital_read(pin):
+    return GPIO.input(pin)
+
+
+def delay_ms(delaytime):
+    time.sleep(delaytime / 1000.0)
+
+
+def spi_writebyte(data):
+    SPI.writebytes(data)
+
+
+def spi_writebyte2(data):
+    SPI.writebytes2(data)
+
+
+def module_init():
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setwarnings(False)
+    GPIO.setup(RST_PIN, GPIO.OUT)
+    GPIO.setup(DC_PIN, GPIO.OUT)
+    GPIO.setup(CS_PIN, GPIO.OUT)
+    GPIO.setup(PWR_PIN, GPIO.OUT)
+    GPIO.setup(BUSY_PIN, GPIO.IN)
+    GPIO.output(PWR_PIN, 1)
+
+    SPI.open(0, 0)
+    SPI.max_speed_hz = 4000000
+    SPI.mode = 0b00
+    return 0
+
+
+def module_exit():
+    SPI.close()
+    GPIO.output(RST_PIN, 0)
+    GPIO.output(DC_PIN, 0)
+    GPIO.output(PWR_PIN, 0)
+    GPIO.cleanup([RST_PIN, DC_PIN, CS_PIN, BUSY_PIN, PWR_PIN])