Use of SP_EINK

    The GDEW0154M09 used by the SP_EINK module is a 1.54” electronic ink screen with a 24P FPC (0.5mm pitch) interface.

    Parameters

    • Screen size: 1.54 inches
    • Effective display area: 27.6mm * 27.6mm
    • Color: black/white/red display
    • Communication interface: SPI
    • Working temperature: -40°C~85°C
    • Working voltage: 2.3V~3.6V

    For detailed module information, please refer to EINK Specification and Data Manual

    Instructions

    1. Preparation: The development board with the latest firmware, sp_eink module.

    2. Run: Connect the module, modify the configuration surrounded by config in Sample Code, the module will display the picture after running.

    The procedure is as follows:

    # init
    epd = SPEINK(spi1, cs, dc, rst, busy, EPD_WIDTH, EPD_HEIGHT)
    epd.init()
    
    # create red image
    img_r = image.Image()
    img_r = img_r.resize(EPD_WIDTH, EPD_HEIGHT)
    img_r.draw_line(0, 0, 100, 100)
    
    # create black/white image
    img_bw = image.Image()
    img_bw = img_bw.resize(EPD_WIDTH, EPD_HEIGHT)
    img_bw.draw_line(100, 50, 200, 100)
    
    # display
    epd.display(img_r, img_bw)
    
    # sleep mode
    epd.sleep()
    

    The main steps are as follows:

    • Create SPEINK object (parameters: SPI object, chip select pin, reset pin, busy flag pin, horizontal resolution, vertical resolution, screen rotation angle (0, 90, 180, 270)), initialize.

    • Create red and black images, set to screen size and fill the image.

    • Call display (parameters are: red image, black image), the screen will flash and the image will be displayed at this time.

    • Go to sleep.