SPMOD - Eink

概述

SPMOD_Eink(墨水屏模块)采用 GDEW0154M09 电子墨水屏。

SPMOD - Eink 介绍

• 采用 Sipeed-SPMOD 接口(2.54mm * 8PIN 排针)，统一 MaixPy 开发板接口
• 通过SP-MOD SPI接口与屏幕底板相连
• 电子墨水屏：GDEW0154M09是一款1.54”，SPI接口控制，拥有24P FPC(0.5mm间距)接口的电子墨水屏。拥有超广可视角。
• 支持 1 bit 黑/白显示
• 分辨率：200x200
• 模块尺寸：35303.8mm

GDEW0154M09 电子墨水屏介绍

内部集成电路包含门缓冲器、源缓冲器，接口，时序控制逻辑，振荡器，DC-DC，SRAM，LUT，VCOM

SPMOD_Eink 模块引脚定义：

• 接线方式：

基本指令列表

更多指令信息参考GDEW0154M09.pdf

使用例程

• 流程

  1. 初始化配置
  2. 创建 Image 并填充
  3. 发送图像并刷新

C 示例：

  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 例程：

  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)

运行环境

MaixPy固件建议自行从最新源码编译

运行结果

• C

  

• MaixPy

  

移植

修改以下参数即可

• 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)
  ##############################################
  

参考设计

• SPMOD_Eink 尺寸图：

资源链接