提升 python Clear() 和 display() 的性能 about e-paper

[BoringCat]

加上 display() 和 getbuffer() 的性能优化方案

• 屏幕：5.83inch e-Paper HAT

    def display(self, image):
        imwidth, imheight = image.size
        image_monocolor = image.convert('1')
        logging.debug('imwidth = %d  imheight =  %d ',imwidth, imheight)
        if(imwidth == self.width and imheight == self.height):
            pixels = image_monocolor.getdata()
        elif(imwidth == self.height and imheight == self.width):
            pixels = image_monocolor.rotate(90, expand=True).getdata()
        else:
            pixels = image_monocolor.resize((self.width,self.height)).getdata()
        buf = [ (pixels[i]>>6<<4) + (pixels[i+1]>>6) for i in range(0, len(pixels), 2)]
        self.send_command(0x10)
        self.send_datas(buf)
        self.send_command(0x12)
        epdconfig.delay_ms(100)
        self.ReadBusy()

[hnwangkg-ezio]

这个是很好的点子，等疫情过去，我到公司测试一遍

[CodeGueas]

ReadBusy 耗时是由硬件决定的吗？