display: detect display availability
(cherry picked from commit 922b47ca8fdd495b8b2835e9ab5b6430982e1735)
This commit is contained in:
Romain Bazile
Romain Bazile
parent
a23820e28d
commit
328d227b8f
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@ -16,91 +16,99 @@ import planktoscope.uuidName
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class Display(object):
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display_available = True
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def __init__(self):
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# Raspberry Pi pin configuration:
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RST = None # on the PiOLED this pin isnt used
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try:
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# 128x32 display with hardware I2C:
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self.__disp = Adafruit_SSD1306.SSD1306_128_32(rst=RST)
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# 128x32 display with hardware I2C:
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self.__disp = Adafruit_SSD1306.SSD1306_128_32(rst=RST)
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# Initialize library.
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self.__disp.begin()
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self.display_machine_name()
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logger.success("planktoscope.display is ready!")
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# Initialize library.
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self.__disp.begin()
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self.display_machine_name()
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logger.success("planktoscope.display is ready!")
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except Exception as e:
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logger.error("Could not detect the display")
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self.display_available = False
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def display_machine_name(self):
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self.__clear()
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machineName = planktoscope.uuidName.machineName(
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machine=planktoscope.uuidName.getSerial()
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)
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self.display_text(machineName.replace(" ", "\n"))
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if self.display_available:
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self.__clear()
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machineName = planktoscope.uuidName.machineName(
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machine=planktoscope.uuidName.getSerial()
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)
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self.display_text(machineName.replace(" ", "\n"))
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def display_text(self, message):
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text = message.replace("\n", " ")
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logger.info(f"Displaying message {text}")
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if self.display_available:
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text = message.replace("\n", " ")
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logger.info(f"Displaying message {text}")
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# Clear display.
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self.__clear()
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width = self.__disp.width
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height = self.__disp.height
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# Clear display.
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self.__clear()
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width = self.__disp.width
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height = self.__disp.height
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# Create blank image for drawing.
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# Make sure to create image with mode '1' for 1-bit color.
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# Create blank image for drawing.
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# Make sure to create image with mode '1' for 1-bit color.
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image = PIL.Image.new("1", (width, height))
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image = PIL.Image.new("1", (width, height))
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# Get drawing object to draw on image.
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draw = PIL.ImageDraw.Draw(image)
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# Get drawing object to draw on image.
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draw = PIL.ImageDraw.Draw(image)
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# Draw a black filled box to clear the image.
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draw.rectangle((0, 0, width, height), outline=0, fill=0)
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# Draw a black filled box to clear the image.
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draw.rectangle((0, 0, width, height), outline=0, fill=0)
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# Draw some shapes.
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# First define some constants to allow easy resizing of shapes.
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padding = -2
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top = padding
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bottom = height - padding
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# Move left to right keeping track of the current x position for drawing shapes.
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x = 0
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# Draw some shapes.
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# First define some constants to allow easy resizing of shapes.
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padding = -2
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top = padding
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bottom = height - padding
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# Move left to right keeping track of the current x position for drawing shapes.
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x = 0
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# Load default font.
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font = PIL.ImageFont.truetype(
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font="truetype/dejavu/DejaVuSansMono.ttf", size=15
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)
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# Load default font.
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font = PIL.ImageFont.truetype(
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font="truetype/dejavu/DejaVuSansMono.ttf", size=15
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)
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# Draw a black filled box to clear the image.
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draw.rectangle((0, 0, width, height), outline=0, fill=0)
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# Draw a black filled box to clear the image.
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draw.rectangle((0, 0, width, height), outline=0, fill=0)
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text_size = font.getsize_multiline(message)
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x = width / 2 - text_size[0] / 2
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text_size = font.getsize_multiline(message)
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x = width / 2 - text_size[0] / 2
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draw.text((x, 0), message, font=font, fill=255, align="center")
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draw.text((x, 0), message, font=font, fill=255, align="center")
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# draw.text((0, top + 15), "READY", font=font, fill=255)
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# now = datetime.datetime.isoformat(datetime.datetime.now())[:-16]
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# draw.text(
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# (68, 0),
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# now,
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# font=PIL.ImageFont.truetype(font="truetype/dejavu/DejaVuSansMono.ttf", size=10),
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# fill=255,
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# )
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# draw.text((x, top + 16), str(Disk), font=font, fill=255)
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# draw.text((x, top + 24), "wlan0:" + str(IP), font=font, fill=255)
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# draw.text((0, top + 15), "READY", font=font, fill=255)
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# now = datetime.datetime.isoformat(datetime.datetime.now())[:-16]
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# draw.text(
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# (68, 0),
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# now,
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# font=PIL.ImageFont.truetype(font="truetype/dejavu/DejaVuSansMono.ttf", size=10),
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# fill=255,
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# )
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# draw.text((x, top + 16), str(Disk), font=font, fill=255)
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# draw.text((x, top + 24), "wlan0:" + str(IP), font=font, fill=255)
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# Display image.
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self.__disp.image(image)
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self.__disp.display()
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# Display image.
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self.__disp.image(image)
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self.__disp.display()
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def __clear(self):
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logger.trace("Clear the display")
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# Clear display.
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self.__disp.clear()
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self.__disp.display()
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if self.display_available:
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logger.trace("Clear the display")
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# Clear display.
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self.__disp.clear()
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self.__disp.display()
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def stop(self):
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logger.info("Display is out!")
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self.display_text("Cut the power\nin 5s")
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if self.display_available:
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logger.info("Display is out!")
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self.display_text("Cut the power\nin 5s")
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if __name__ == "__main__":
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