e-paper-display/bcm2835-1.71/e-Paper/STM32/STM32-F103ZET6/User/Examples/EPD_4in37g_test.c

/*****************************************************************************
* | File      	:   EPD_4in37g_test.c
* | Author      :   Waveshare team
* | Function    :   4.37inch e-Paper (G) test demo
* | Info        :
*----------------
* |	This version:   V1.0
* | Date        :   2022-08-15
* | Info        :
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
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#
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#
******************************************************************************/
#include "EPD_Test.h"
#include "EPD_4in37g.h"

int EPD_test(void)
{
    printf("EPD_4IN37G_test Demo\r\n");
    if(DEV_Module_Init()!=0){
        return -1;
    }

    printf("e-Paper Init and Clear...\r\n");
    EPD_4IN37G_Init();
    EPD_4IN37G_Clear(EPD_4IN37G_WHITE); // WHITE
    DEV_Delay_ms(2000);

    //Create a new image cache
    UBYTE *BlackImage;
    /* you have to edit the startup_stm32fxxx.s file and set a big enough heap size */
    UWORD Imagesize = ((EPD_4IN37G_WIDTH % 4 == 0)? (EPD_4IN37G_WIDTH / 4 ): (EPD_4IN37G_WIDTH / 4 + 1)) * EPD_4IN37G_HEIGHT;
    if((BlackImage = (UBYTE *)malloc(Imagesize)) == NULL) {
        printf("Failed to apply for black memory...\r\n");
        return -1;
    }
    printf("Paint_NewImage\r\n");
    Paint_NewImage(BlackImage, EPD_4IN37G_WIDTH, EPD_4IN37G_HEIGHT, 0, EPD_4IN37G_WHITE);
    Paint_SetScale(4);   

#if 1   // show image for array
    printf("show image for array\r\n");
    Paint_SelectImage(BlackImage);
    Paint_Clear(EPD_4IN37G_WHITE);
    Paint_DrawBitMap(gImage_4in37g);
    EPD_4IN37G_Display(BlackImage);
    DEV_Delay_ms(2000);
#endif

#if 1   // Drawing on the image
    //1.Select Image
    printf("SelectImage:BlackImage\r\n");
    Paint_SelectImage(BlackImage);
    Paint_Clear(EPD_4IN37G_WHITE);

    // 2.Drawing on the image
    printf("Drawing:BlackImage\r\n");
    Paint_DrawPoint(10, 80, EPD_4IN37G_RED, DOT_PIXEL_1X1, DOT_STYLE_DFT);
    Paint_DrawPoint(10, 90, EPD_4IN37G_YELLOW, DOT_PIXEL_2X2, DOT_STYLE_DFT);
    Paint_DrawPoint(10, 100, EPD_4IN37G_BLACK, DOT_PIXEL_3X3, DOT_STYLE_DFT);
    Paint_DrawLine(20, 70, 70, 120, EPD_4IN37G_RED, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
    Paint_DrawLine(70, 70, 20, 120, EPD_4IN37G_RED, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
    Paint_DrawRectangle(20, 70, 70, 120, EPD_4IN37G_YELLOW, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
    Paint_DrawRectangle(80, 70, 130, 120, EPD_4IN37G_YELLOW, DOT_PIXEL_1X1, DRAW_FILL_FULL);
    Paint_DrawCircle(45, 95, 20, EPD_4IN37G_BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
    Paint_DrawCircle(105, 95, 20, EPD_4IN37G_BLACK, DOT_PIXEL_1X1, DRAW_FILL_FULL);
    Paint_DrawLine(85, 95, 125, 95, EPD_4IN37G_YELLOW, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
    Paint_DrawLine(105, 75, 105, 115, EPD_4IN37G_RED, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
    Paint_DrawString_EN(10, 0, "Red, yellow, white and black", &Font20, EPD_4IN37G_YELLOW, EPD_4IN37G_WHITE);
    Paint_DrawString_EN(10, 30, "Four color e-Paper", &Font12, EPD_4IN37G_RED, EPD_4IN37G_BLACK);
    Paint_DrawString_CN(10, 125, "微雪电子", &Font24CN, EPD_4IN37G_WHITE, EPD_4IN37G_RED);
    Paint_DrawNum(10, 50, 123456, &Font12, EPD_4IN37G_WHITE, EPD_4IN37G_BLACK);

    printf("EPD_Display\r\n");
    EPD_4IN37G_Display(BlackImage);
    DEV_Delay_ms(3000);
#endif

#if 1   // Drawing on the image
    //1.Select Image
    printf("SelectImage:BlackImage\r\n");
    Paint_SelectImage(BlackImage);
    Paint_Clear(EPD_4IN37G_WHITE);

    int hNumber, hWidth, vNumber, vWidth;
    hNumber = 16;
	hWidth = EPD_4IN37G_HEIGHT/hNumber; // 368/16=23
    vNumber = 16;
	vWidth = EPD_4IN37G_WIDTH/vNumber; // 512/16=32

    // 2.Drawing on the image
    printf("Drawing:BlackImage\r\n");
	for(int i=0; i<hNumber; i++) {  // horizontal
		Paint_DrawRectangle(1, 1+i*hWidth, EPD_4IN37G_WIDTH, hWidth*(1+i), EPD_4IN37G_BLACK + (i % 2), DOT_PIXEL_1X1, DRAW_FILL_FULL);
	}
	for(int i=0; i<vNumber; i++) {  // vertical
        if(i%2) {
            Paint_DrawRectangle(1+i*vWidth, 1, vWidth*(i+1), EPD_4IN37G_HEIGHT, EPD_4IN37G_YELLOW + (i/2%2), DOT_PIXEL_1X1, DRAW_FILL_FULL);
        }
	}
    printf("EPD_Display\r\n");
    EPD_4IN37G_Display(BlackImage);
    DEV_Delay_ms(3000);
#endif
    printf("Clear...\r\n");
    EPD_4IN37G_Clear(EPD_4IN37G_WHITE);

    printf("Goto Sleep...\r\n");
    EPD_4IN37G_Sleep();
    free(BlackImage);
    BlackImage = NULL;
    DEV_Delay_ms(2000);//important, at least 2s
    // close 5V
    printf("close 5V, Module enters 0 power consumption ...\r\n");
    DEV_Module_Exit();
    
    return 0;
}