SPMOD - Eink

Overview

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SPMOD_Eink(E-paper display module) uses GDEW0154M09 E-paper display.

SPMOD - Eink Introduction

  • Using Sipeed-SPMOD interface(2.54mm * 8PIN ),unified MaixPy board interface
  • Connect to the screen through the SP-MOD SPI interface
  • E-paper display module:GDEW0154M09 is a 1.54" E-paper display,with SPI interface,and has 24P FPC(0.5mm pitch).
  • Support 1 bit Black/Write full display capabilities
  • Display Resolution:200x200
  • Size:35303.8mm

GDEW0154M09 E-paper display Introduction

Features: ---
Supply voltage of external power supply 2.3V~3.6V
Supply current of external power supply 1~3mA
Range of working temperature -40℃~85℃
Sleep Status of Current <5uA
Screen Size 1.54 inch
Active Area 27.6mm*27.6mm
Display Resolution 200*200
Color 1 bit Black/Write full display capabilities
interface 24P FPC (0.5mm pitch)

An integrated circuit contains gate buffer, source buffer, interface, timing control logic, oscillator, DC-DC, SRAM, LUT, VCOM, and border are supplied with each panel.

SPMOD_Eink pin description :

Pin Name Type Description
1 GND G Ground
2 CS I Chip Select input pin
3 D/C I Data/Command control pin
4 RES I Reset (active low)
5 3V3 V Power supply(3.3V)
6 SCK I SPI clock pin
7 SI I/O Master Out Slave In
8 BSY O Busy status output pin

  • Mode of connection::
MCU:FUN(IO) SP_Eink
GPIOHS(IO_7) RES
SPIOHS(IO_15) D/C
SPIOHS(IO_20) CS
SPI:SCK(IO_21) SCK
SPI:MOSI(IO_8) SI
GPIOHS(IO_6) BSY
2.3-3.6V 3.3V
GND GND

AT instruction list

Instruction description
0x10 start transport b/w data
0x13 start transport r/w data
0x12 refresh data to screen

See GDEW0154M09.pdf for more information

Usage

  • Process

    1.initializatin 2.create an image and fill it 3.send image and refresh

C:


  spi_init(1, SPI_WORK_MODE_0, SPI_FF_STANDARD, DATALENGTH, 0);

  fpioa_set_function(SPI_Eink_CS_PIN_NUM, FUNC_SPI1_SS0);   // SPI_Eink_CS_PIN_NUM: 20;
  fpioa_set_function(SPI_Eink_SCK_PIN_NUM, FUNC_SPI1_SCLK); // SPI_Eink_SCK_PIN_NUM: 21;
  fpioa_set_function(SPI_Eink_MOSI_PIN_NUM, FUNC_SPI1_D0);  // SPI_Eink_MOSI_PIN_NUM: 8;

  fpioa_set_function(SPI_Eink_DC_PIN_NUM, FUNC_GPIOHS0 + SPI_Eink_DC_GPIO_NUM);   // SPI_Eink_DC_PIN_NUM: 21;
  fpioa_set_function(SPI_Eink_RST_PIN_NUM, FUNC_GPIOHS0 + SPI_Eink_RST_GPIO_NUM); // SPI_Eink_RST_PIN_NUM: 7;
  fpioa_set_function(SPI_Eink_BL_PIN_NUM, FUNC_GPIOHS0 + SPI_Eink_BL_GPIO_NUM);   // SPI_Eink_BL_PIN_NUM: 6;

  gpiohs_set_drive_mode(SPI_Eink_DC_GPIO_NUM, GPIO_DM_OUTPUT);
  gpiohs_set_drive_mode(SPI_Eink_RST_GPIO_NUM, GPIO_DM_OUTPUT);

  gpiohs_set_pin(SPI_Eink_DC_GPIO_NUM, GPIO_PV_HIGH);
  gpiohs_set_pin(SPI_Eink_RST_GPIO_NUM, GPIO_PV_HIGH);

  gpiohs_set_drive_mode(SPI_Eink_BL_PIN_NUM, GPIO_DM_INPUT_PULL_UP);
  gpiohs_set_pin_edge(SPI_Eink_BL_PIN_NUM, GPIO_PE_BOTH);

    EPD_DisplayInit(); //EPD init

  //Paint initialization
  Paint_NewImage(BlackImage, EPD_WIDTH, EPD_HEIGHT, 270, WHITE); //Set screen size and display orientation
  Paint_SelectImage(BlackImage);                                 //Set the virtual canvas data storage location

  Paint_Clear(WHITE); //clear paint
  Paint_DrawString_EN(0, 0, "sipeed", &Font8, WHITE, BLACK);   //5*8
  Paint_DrawString_EN(0, 10, "sipeed", &Font12, WHITE, BLACK); //7*12
  Paint_DrawString_EN(0, 25, "sipeed", &Font16, WHITE, BLACK); //11*16
  Paint_DrawString_EN(0, 45, "sipeed", &Font20, WHITE, BLACK); //14*20
  Paint_DrawString_EN(0, 80, "sipeed", &Font24, WHITE, BLACK); //17*24
  EPD_FullDisplay(BlackImage, BlackImage, 0);                  //display image

MaixPy:


  spi1 = SPI(SPI.SPI1, mode=SPI.MODE_MASTER, baudrate=600 * 1000,
              polarity=0, phase=0, bits=8, firstbit=SPI.MSB, sck=21, mosi=8)

  fm.register(20, fm.fpioa.GPIOHS20, force=True) # SPI_Eink_SS_PIN_NUM: 20;
  fm.register(15, fm.fpioa.GPIOHS15, force=True) # SPI_Eink_DC_PIN_NUM: 15;
  fm.register(6, fm.fpioa.GPIOHS6, force=True) # SPI_Eink_BUSY_PIN_NUM: 6;
  fm.register(7, fm.fpioa.GPIOHS7, force=True) # SPI_Eink_RST_PIN_NUM: 7;

  cs = GPIO(GPIO.GPIOHS20, GPIO.OUT)
  dc = GPIO(GPIO.GPIOHS15, GPIO.OUT)
  busy = GPIO(GPIO.GPIOHS6, GPIO.IN, GPIO.PULL_DOWN)
  rst = GPIO(GPIO.GPIOHS7, GPIO.OUT)

  epd = SPEink(spi1, cs, dc, rst, busy, SPEink_WIDTH, SPEink_HEIGHT, SPEink_ROTATION)
  epd.init()

  img = image.Image()
  img = img.resize(200, 200)
  img.draw_line(0, 0, 100, 100)

  epd.display(img)

Runtime environments:

Language Board SDK/Firmware version
C MaixCube kendryte-standalone-sdk v0.5.6
MaixPy MaixCube maixpy v0.5.1

The MaixPy firmware is recommended to compile from the latest source

Result

  • C

  • MaixPy

Transplant

The following parameters need to be modified

  • C

      // board_config.h
      #define SPI_INDEX 1
      #define SPI_SCLK_RATE 600 * 1000
      #define SPI_CHIP_SELECT_NSS 0 //SPI_CHIP_SELECT_0
    
      #define SPI_Eink_CS_PIN_NUM 20
      #define SPI_Eink_SCK_PIN_NUM 21
      #define SPI_Eink_MOSI_PIN_NUM 8
    
      #define SPI_Eink_DC_PIN_NUM 15
      #define SPI_Eink_BL_PIN_NUM 6
      #define SPI_Eink_RST_PIN_NUM 7
    
      #define SPI_Eink_DC_GPIO_NUM 15
      #define SPI_Eink_BL_GPIO_NUM 6
      #define SPI_Eink_RST_GPIO_NUM 7
    
  • MaixPy

    ```python ################### config ################### SPI_Eink_NUM = SPI.SPI1 SPI_Eink_DC_PIN_NUM = const(15) SPI_Eink_BUSY_PIN_NUM = const(6) SPI_Eink_RST_PIN_NUM = const(7) SPI_Eink_CS_PIN_NUM = const(20) SPI_Eink_SCK_PIN_NUM = const(21) SPI_Eink_MOSI_PIN_NUM = const(8) SPI_Eink_FREQ_KHZ = const(600) ##############################################

Outlook

  • SPMOD_Eink Size drawing:


Resource ---
Website www.sipeed.com
Github https://github.com/sipeed
BBS http://bbs.sipeed.com
Wiki http://maixpy.sipeed.com
Sipeed model shop https://maixhub.com/
SDK Relevant information dl.sipeed.com/MAIX/SDK
HDK Relevant information dl.sipeed.com/MAIX/HDK
E-mail(Technical Support and Business Cooperation) Support@sipeed.com
telgram link https://t.me/sipeed