186 lines
5.1 KiB
Python
186 lines
5.1 KiB
Python
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import time
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from . import lcdconfig
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class LCD_2inch(lcdconfig.RaspberryPi):
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width = 240
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height = 320
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def command(self, cmd):
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self.digital_write(self.DC_PIN, self.GPIO.LOW)
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self.spi_writebyte([cmd])
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def data(self, val):
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self.digital_write(self.DC_PIN, self.GPIO.HIGH)
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self.spi_writebyte([val])
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def reset(self):
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"""Reset the display"""
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self.GPIO.output(self.RST_PIN, self.GPIO.HIGH)
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time.sleep(0.01)
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self.GPIO.output(self.RST_PIN, self.GPIO.LOW)
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time.sleep(0.01)
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self.GPIO.output(self.RST_PIN, self.GPIO.HIGH)
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time.sleep(0.01)
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def Init(self):
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"""Initialize dispaly"""
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self.module_init()
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self.reset()
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self.command(0x36)
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self.data(0x00)
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self.command(0x3A)
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self.data(0x05)
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self.command(0x21)
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self.command(0x2A)
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self.data(0x00)
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self.data(0x00)
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self.data(0x01)
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self.data(0x3F)
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self.command(0x2B)
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self.data(0x00)
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self.data(0x00)
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self.data(0x00)
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self.data(0xEF)
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self.command(0xB2)
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self.data(0x0C)
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self.data(0x0C)
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self.data(0x00)
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self.data(0x33)
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self.data(0x33)
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self.command(0xB7)
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self.data(0x35)
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self.command(0xBB)
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self.data(0x1F)
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self.command(0xC0)
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self.data(0x2C)
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self.command(0xC2)
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self.data(0x01)
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self.command(0xC3)
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self.data(0x12)
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self.command(0xC4)
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self.data(0x20)
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self.command(0xC6)
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self.data(0x0F)
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self.command(0xD0)
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self.data(0xA4)
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self.data(0xA1)
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self.command(0xE0)
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self.data(0xD0)
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self.data(0x08)
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self.data(0x11)
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self.data(0x08)
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self.data(0x0C)
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self.data(0x15)
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self.data(0x39)
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self.data(0x33)
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self.data(0x50)
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self.data(0x36)
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self.data(0x13)
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self.data(0x14)
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self.data(0x29)
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self.data(0x2D)
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self.command(0xE1)
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self.data(0xD0)
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self.data(0x08)
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self.data(0x10)
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self.data(0x08)
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self.data(0x06)
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self.data(0x06)
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self.data(0x39)
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self.data(0x44)
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self.data(0x51)
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self.data(0x0B)
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self.data(0x16)
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self.data(0x14)
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self.data(0x2F)
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self.data(0x31)
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self.command(0x21)
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self.command(0x11)
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self.command(0x29)
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def SetWindows(self, Xstart, Ystart, Xend, Yend):
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self.command(0x2A)
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#: set the X coordinates
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self.data(Xstart >> 8)
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#: Set the horizontal starting point to the high octet
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self.data(Xstart & 0xff)
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#: Set the horizontal starting point to the low octet
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self.data(Xend >> 8)
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#: Set the horizontal end to the high octet
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self.data((Xend - 1) & 0xff)
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#: Set the horizontal end to the low octet
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self.command(0x2B)
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#: set the Y coordinates
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self.data(Ystart >> 8)
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self.data((Ystart & 0xff))
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self.data(Yend >> 8)
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self.data((Yend - 1) & 0xff)
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self.command(0x2C)
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def ShowImage(self, Image, Xstart=0, Ystart=0):
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"""Set buffer to value of Python Imaging Library image."""
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"""Write display buffer to physical display"""
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imwidth, imheight = Image.size
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if imwidth == self.height and imheight == self.width:
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img = self.np.asarray(Image)
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pix = self.np.zeros(
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(self.width, self.height, 2), dtype=self.np.uint8)
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# RGB888 >> RGB565
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pix[...,[0]] = self.np.add(self.np.bitwise_and(img[...,[0]],0xF8),self.np.right_shift(img[...,[1]],5))
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pix[...,[1]] = self.np.add(self.np.bitwise_and(self.np.left_shift(img[...,[1]],3),0xE0), self.np.right_shift(img[...,[2]],3))
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pix = pix.flatten().tolist()
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self.command(0x36)
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self.data(0x70)
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self.SetWindows(0, 0, self.height, self.width)
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self.digital_write(self.DC_PIN, self.GPIO.HIGH)
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for i in range(0, len(pix), 4096):
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self.spi_writebyte(pix[i:i+4096])
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else:
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img = self.np.asarray(Image)
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pix = self.np.zeros((imheight, imwidth, 2), dtype=self.np.uint8)
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pix[...,[0]] = self.np.add(self.np.bitwise_and(img[...,[0]],0xF8),self.np.right_shift(img[...,[1]],5))
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pix[...,[1]] = self.np.add(self.np.bitwise_and(self.np.left_shift(img[...,[1]],3),0xE0), self.np.right_shift(img[...,[2]],3))
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pix = pix.flatten().tolist()
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self.command(0x36)
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self.data(0x00)
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self.SetWindows(0, 0, self.width, self.height)
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self.digital_write(self.DC_PIN, self.GPIO.HIGH)
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for i in range(0, len(pix), 4096):
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self.spi_writebyte(pix[i:i+4096])
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def clear(self):
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"""Clear contents of image buffer"""
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_buffer = [0xff]*(self.width * self.height * 2)
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self.SetWindows(0, 0, self.width, self.height)
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self.digital_write(self.DC_PIN, self.GPIO.HIGH)
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for i in range(0, len(_buffer), 4096):
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self.spi_writebyte(_buffer[i:i+4096])
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