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SP_EINK 模块使用说明

ENGLISH

目录结构

目录 描述
doc 参考文档
img 图片
script MaixPy脚本示例
src C裸机程序示例

介绍

SP_EINK 模块采用 GDEW0154M09，这是一款 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。该模块使用SP_MOD SPI 接口与开发板相连.

更多详细特性参考SP-EINK规格书V1.0.pdf

引脚图

接线方式

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 配置

IO 口配置

将原理图对应的 IO 口配置为 SPI 功能

  • 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 初始化

  • 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 配置

基本指令列表

指令 功能
0x10 开始发送黑白图像
0x13 开始发送红白图像
0x12 刷新图像到屏幕

更多指令信息参考GDEW0154M09.pdf

使用方式

  • 流程

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

  • 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)

运行环境

语言 开发板 SDK/固件版本
C MaixCube kendryte-standalone-sdk v0.5.6
MaixPy MaixCube maixpy v0.5.1

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

许可

请查看 LICENSE 文件

相关信息

版本号 编辑人 时间
v1.0 vamoosebbf 2020.12.2