vamoosebbf / sp_eink

1.54'电子水墨屏 K210 的 C 和 MaixPy 驱动

SP_EINK Module User Guide

中文

Directory Structure

Directory	Description
doc	Reference documentation
img	Images
script	Maixpy script example
src	C program example based on the standalone sdk

Introduce

SP_EINK module USES GDEW0154M09, which is a 1.54 ", SPI interface control, with 24P FPC(0.5mm spacing) interface e-ink screen. Has a wide range of views. This module uses the SP_MOD SPI interface to connect to mcu.

See SP-EINK规格书V1.0.pdf for more information.

Pin figure

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

MCU configuration

IO Port configuration

Configure the IO port corresponding to the schematic diagram as SPI function

• C

  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);

• MaixPy

  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)

SPI initalization

• C

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

• 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)

SP_EINK configuration

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

Method of application

• Process

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

• C

  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

  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 enviroments

Language	Boards	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

  ################### 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)
  ##############################################

LICENSE

See LICENSE file

Othre information

Version	Editor	Date
v1.0	vamoosebbf	2020.12.2