Add the 4.37inch e-Paper (G) C program and fix.

.vscode/settings.json

@@ -1,5 +1,10 @@
 {
     "files.associations": {
-        "imagedata.h": "c"
+        "imagedata.h": "c",
+        "epd_5in65f.h": "c",
+        "gui_paint.h": "c",
+        "math.h": "c",
+        "dev_config.h": "c",
+        "epd_4in37g.h": "c"
     }
 }

RaspberryPi_JetsonNano/c/examples/EPD_1in64g_test.c

@@ -66,32 +66,31 @@ int EPD_1in64g_test(void)
     GUI_ReadBmp_RGB_4Color("./pic/1.64inch-2.bmp", 0, 0);
     EPD_1IN64G_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(0x55);
+    Paint_Clear(EPD_1IN64G_WHITE);
 
     // 2.Drawing on the image
     printf("Drawing:BlackImage\r\n");
-    Paint_DrawPoint(10, 80, Red_4Color, DOT_PIXEL_1X1, DOT_STYLE_DFT);
-    Paint_DrawPoint(10, 90, Yellow_4Color, DOT_PIXEL_2X2, DOT_STYLE_DFT);
-    Paint_DrawPoint(10, 100, Black_4Color, DOT_PIXEL_3X3, DOT_STYLE_DFT);
-    Paint_DrawLine(20, 70, 70, 120, Red_4Color, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
-    Paint_DrawLine(70, 70, 20, 120, Red_4Color, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
-    Paint_DrawRectangle(20, 70, 70, 120, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
-    Paint_DrawRectangle(80, 70, 130, 120, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    Paint_DrawCircle(45, 95, 20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
-    Paint_DrawCircle(105, 95, 20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    Paint_DrawLine(85, 95, 125, 95, Red_4Color, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
-    Paint_DrawLine(105, 75, 105, 115, Yellow_4Color, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
-    Paint_DrawString_EN(10, 0, "Red, yellow, white and black_4Color", &Font16, Red_4Color, Yellow_4Color);
-    Paint_DrawString_EN(10, 35, "Four color e-Paper", &Font12, Yellow_4Color, Black_4Color);
-    Paint_DrawString_CN(10, 125, "΢ѩ����", &Font24CN, Red_4Color, White_4Color);
-    Paint_DrawNum(10, 50, 123456, &Font12, Red_4Color, White_4Color);
+    Paint_DrawPoint(10, 80, EPD_1IN64G_RED, DOT_PIXEL_1X1, DOT_STYLE_DFT);
+    Paint_DrawPoint(10, 90, EPD_1IN64G_YELLOW, DOT_PIXEL_2X2, DOT_STYLE_DFT);
+    Paint_DrawPoint(10, 100, EPD_1IN64G_BLACK, DOT_PIXEL_3X3, DOT_STYLE_DFT);
+    Paint_DrawLine(20, 70, 70, 120, EPD_1IN64G_RED, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
+    Paint_DrawLine(70, 70, 20, 120, EPD_1IN64G_RED, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
+    Paint_DrawRectangle(20, 70, 70, 120, EPD_1IN64G_YELLOW, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
+    Paint_DrawRectangle(80, 70, 130, 120, EPD_1IN64G_YELLOW, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawCircle(45, 95, 20, EPD_1IN64G_BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
+    Paint_DrawCircle(105, 95, 20, EPD_1IN64G_BLACK, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawLine(85, 95, 125, 95, EPD_1IN64G_RED, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
+    Paint_DrawLine(105, 75, 105, 115, EPD_1IN64G_YELLOW, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
+    Paint_DrawString_EN(10, 0, "Red, yellow, white and black", &Font16, EPD_1IN64G_RED, EPD_1IN64G_YELLOW);
+    Paint_DrawString_EN(10, 35, "Four color e-Paper", &Font12, EPD_1IN64G_YELLOW, EPD_1IN64G_BLACK);
+    Paint_DrawString_CN(10, 125, "΢ѩ����", &Font24CN, EPD_1IN64G_RED, EPD_1IN64G_WHITE);
+    Paint_DrawNum(10, 50, 123456, &Font12, EPD_1IN64G_RED, EPD_1IN64G_WHITE);
 
     printf("EPD_Display\r\n");
     EPD_1IN64G_Display(BlackImage);
@@ -102,13 +101,13 @@ int EPD_1in64g_test(void)
     //1.Select Image
     printf("SelectImage:BlackImage\r\n");
     Paint_SelectImage(BlackImage);
-    Paint_Clear(0x55);
+    Paint_Clear(EPD_1IN64G_WHITE);
 
     // 2.Drawing on the image
     printf("Drawing:BlackImage\r\n");
-    Paint_DrawRectangle(1, 1, 168, 55, Red_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    Paint_DrawRectangle(1, 112, 167, 167, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    Paint_DrawRectangle(59, 1, 109, 167, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawRectangle(1, 1, 168, 55, EPD_1IN64G_RED, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawRectangle(1, 112, 167, 167, EPD_1IN64G_YELLOW, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawRectangle(59, 1, 109, 167, EPD_1IN64G_BLACK, DOT_PIXEL_1X1, DRAW_FILL_FULL);
 
     printf("EPD_Display\r\n");
     EPD_1IN64G_Display(BlackImage);
@@ -119,33 +118,24 @@ int EPD_1in64g_test(void)
     //1.Select Image
     printf("SelectImage:BlackImage\r\n");
     Paint_SelectImage(BlackImage);
-    Paint_Clear(0x55);
+    Paint_Clear(EPD_1IN64G_WHITE);
+
+    int hNumber, hWidth, vNumber, vWidth;
+    hNumber = 8;
+	hWidth = EPD_1IN64G_HEIGHT/hNumber; // 168/16=21
+    vNumber = 8;
+	vWidth = EPD_1IN64G_WIDTH/vNumber; // 168/16=21
 
-    int wNumber, lNumber;
-    wNumber = (EPD_1IN64G_WIDTH/80)==0 ? (EPD_1IN64G_WIDTH/80) : (EPD_1IN64G_WIDTH/80)+1;
-    lNumber = (EPD_1IN64G_HEIGHT/20)==0 ? (EPD_1IN64G_HEIGHT/20) : (EPD_1IN64G_HEIGHT/20)+1;
     // 2.Drawing on the image
     printf("Drawing:BlackImage\r\n");
-    for(int j=0; j<lNumber; j++) {
-        if(j%2 == 0) {
-            for(int i=0; i<wNumber; i++) {
-                Paint_DrawRectangle(1+i*80, 1+j*20, 20+i*80, 20+j*20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(21+i*80, 1+j*20, 40+i*80, 20+j*20, White_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(41+i*80, 1+j*20, 60+i*80, 20+j*20, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(61+i*80, 1+j*20, 80+i*80, 20+j*20, Red_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-            }
-        }
-
-        else {
-            for(int i=0; i<wNumber; i++) {
-                Paint_DrawRectangle(1+i*80, 1+j*20, 20+i*80, 20+j*20, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(21+i*80, 1+j*20, 40+i*80, 20+j*20, Red_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(41+i*80, 1+j*20, 60+i*80, 20+j*20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(61+i*80, 1+j*20, 80+i*80, 20+j*20, White_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-            }
+	for(int i=0; i<hNumber; i++) {  // horizontal
+		Paint_DrawRectangle(1, 1+i*hWidth, EPD_1IN64G_WIDTH, hWidth*(1+i), EPD_1IN64G_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_1IN64G_HEIGHT, EPD_1IN64G_YELLOW + (i/2%2), DOT_PIXEL_1X1, DRAW_FILL_FULL);
         }
-
-    }
+	}
 
     printf("EPD_Display\r\n");
     EPD_1IN64G_Display(BlackImage);

RaspberryPi_JetsonNano/c/examples/EPD_3in0g_test.c

@@ -61,14 +61,12 @@ int EPD_3in0g_test(void)
     Paint_SetScale(4);
 
 #if 1   // show bmp
-
     printf("show BMP-----------------\r\n");
     EPD_3IN0G_Init();
     Paint_SelectImage(BlackImage);
     GUI_ReadBmp_RGB_4Color("./pic/3inch-3.bmp", 0, 0);
     EPD_3IN0G_Display(BlackImage);
     DEV_Delay_ms(2000);
-
 #endif
 
 #if 1   // Drawing on the image
@@ -76,25 +74,25 @@ int EPD_3in0g_test(void)
     EPD_3IN0G_Init();
     printf("SelectImage:BlackImage\r\n");
     Paint_SelectImage(BlackImage);
-    Paint_Clear(0x55);
+    Paint_Clear(EPD_3IN0G_WHITE);
 
     // 2.Drawing on the image
     printf("Drawing:BlackImage\r\n");
-    Paint_DrawPoint(10, 80, Red_4Color, DOT_PIXEL_1X1, DOT_STYLE_DFT);
-    Paint_DrawPoint(10, 90, Yellow_4Color, DOT_PIXEL_2X2, DOT_STYLE_DFT);
-    Paint_DrawPoint(10, 100, Black_4Color, DOT_PIXEL_3X3, DOT_STYLE_DFT);
-    Paint_DrawLine(20, 70, 70, 120, Red_4Color, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
-    Paint_DrawLine(70, 70, 20, 120, Red_4Color, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
-    Paint_DrawRectangle(20, 70, 70, 120, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
-    Paint_DrawRectangle(80, 70, 130, 120, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    Paint_DrawCircle(45, 95, 20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
-    Paint_DrawCircle(105, 95, 20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    Paint_DrawLine(85, 95, 125, 95, Red_4Color, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
-    Paint_DrawLine(105, 75, 105, 115, Yellow_4Color, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
-    Paint_DrawString_EN(10, 0, "Red, yellow, white and black", &Font16, Red_4Color, Yellow_4Color);
-    Paint_DrawString_EN(10, 35, "Four color e-Paper", &Font12, Yellow_4Color, Black_4Color);
-    Paint_DrawString_CN(10, 125, "΢ѩ����", &Font24CN, Red_4Color, White_4Color);
-    Paint_DrawNum(10, 50, 123456, &Font12, Red_4Color, White_4Color);
+    Paint_DrawPoint(10, 80, EPD_3IN0G_RED, DOT_PIXEL_1X1, DOT_STYLE_DFT);
+    Paint_DrawPoint(10, 90, EPD_3IN0G_YELLOW, DOT_PIXEL_2X2, DOT_STYLE_DFT);
+    Paint_DrawPoint(10, 100, EPD_3IN0G_BLACK, DOT_PIXEL_3X3, DOT_STYLE_DFT);
+    Paint_DrawLine(20, 70, 70, 120, EPD_3IN0G_RED, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
+    Paint_DrawLine(70, 70, 20, 120, EPD_3IN0G_RED, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
+    Paint_DrawRectangle(20, 70, 70, 120, EPD_3IN0G_YELLOW, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
+    Paint_DrawRectangle(80, 70, 130, 120, EPD_3IN0G_YELLOW, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawCircle(45, 95, 20, EPD_3IN0G_BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
+    Paint_DrawCircle(105, 95, 20, EPD_3IN0G_BLACK, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawLine(85, 95, 125, 95, EPD_3IN0G_RED, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
+    Paint_DrawLine(105, 75, 105, 115, EPD_3IN0G_YELLOW, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
+    Paint_DrawString_EN(10, 0, "Red, yellow, white and black", &Font16, EPD_3IN0G_RED, EPD_3IN0G_YELLOW);
+    Paint_DrawString_EN(10, 35, "Four color e-Paper", &Font12, EPD_3IN0G_YELLOW, EPD_3IN0G_BLACK);
+    Paint_DrawString_CN(10, 125, "΢ѩ����", &Font24CN, EPD_3IN0G_RED, EPD_3IN0G_WHITE);
+    Paint_DrawNum(10, 50, 123456, &Font12, EPD_3IN0G_RED, EPD_3IN0G_WHITE);
 
     printf("EPD_Display\r\n");
     EPD_3IN0G_Display(BlackImage);
@@ -106,13 +104,13 @@ int EPD_3in0g_test(void)
     EPD_3IN0G_Init();
     printf("SelectImage:BlackImage\r\n");
     Paint_SelectImage(BlackImage);
-    Paint_Clear(0x55);
+    Paint_Clear(EPD_3IN0G_WHITE);
 
     // 2.Drawing on the image
     printf("Drawing:BlackImage\r\n");
-    Paint_DrawRectangle(1, 1, 167, 86, Red_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    Paint_DrawRectangle(1, 314, 167, 399, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    Paint_DrawRectangle(59, 1, 109, 399, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawRectangle(1, 1, 167, 86, EPD_3IN0G_RED, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawRectangle(1, 314, 167, 399, EPD_3IN0G_YELLOW, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawRectangle(59, 1, 109, 399, EPD_3IN0G_BLACK, DOT_PIXEL_1X1, DRAW_FILL_FULL);
 
     printf("EPD_Display\r\n");
     EPD_3IN0G_Display(BlackImage);
@@ -124,34 +122,24 @@ int EPD_3in0g_test(void)
     EPD_3IN0G_Init();
     printf("SelectImage:BlackImage\r\n");
     Paint_SelectImage(BlackImage);
-    Paint_Clear(0x55);
+    Paint_Clear(EPD_3IN0G_WHITE);
+
+    int hNumber, hWidth, vNumber, vWidth;
+    hNumber = 20;
+	hWidth = EPD_3IN0G_HEIGHT/hNumber; // 400/20=20
+    vNumber = 8;
+	vWidth = EPD_3IN0G_WIDTH/vNumber; // 168/8=21
 
-    int wNumber, lNumber;
-    wNumber = (EPD_3IN0G_WIDTH/80)==0 ? (EPD_3IN0G_WIDTH/80) : (EPD_3IN0G_WIDTH/80)+1;
-    lNumber = (EPD_3IN0G_HEIGHT/20)==0 ? (EPD_3IN0G_HEIGHT/20) : (EPD_3IN0G_HEIGHT/20)+1;
     // 2.Drawing on the image
     printf("Drawing:BlackImage\r\n");
-    for(int j=0; j<lNumber; j++) {
-        if(j%2 == 0) {
-            for(int i=0; i<wNumber; i++) {
-                Paint_DrawRectangle(1+i*80, 1+j*20, 20+i*80, 20+j*20, Red_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(21+i*80, 1+j*20, 40+i*80, 20+j*20, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(41+i*80, 1+j*20, 60+i*80, 20+j*20, White_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(61+i*80, 1+j*20, 80+i*80, 20+j*20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-            }
-        }
-
-        else {
-            for(int i=0; i<wNumber; i++) {
-                Paint_DrawRectangle(1+i*80, 1+j*20, 20+i*80, 20+j*20, White_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(21+i*80, 1+j*20, 40+i*80, 20+j*20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(41+i*80, 1+j*20, 60+i*80, 20+j*20, Red_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(61+i*80, 1+j*20, 80+i*80, 20+j*20, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-            }
+	for(int i=0; i<hNumber; i++) {  // horizontal
+		Paint_DrawRectangle(1, 1+i*hWidth, EPD_3IN0G_WIDTH, hWidth*(1+i), EPD_3IN0G_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_3IN0G_HEIGHT, EPD_3IN0G_YELLOW + (i/2%2), DOT_PIXEL_1X1, DRAW_FILL_FULL);
         }
-
-    }
-
+	}
     printf("EPD_Display\r\n");
     EPD_3IN0G_Display(BlackImage);
     DEV_Delay_ms(3000);

RaspberryPi_JetsonNano/c/examples/EPD_4in37g_test.c

@@ -0,0 +1,146 @@
+/*****************************************************************************
+* | 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
+# of this software and associated documnetation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to  whom the Software is
+# furished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+******************************************************************************/
+#include "EPD_Test.h"
+#include "EPD_4in37g.h"
+#include "time.h"
+
+int EPD_4in37g_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();
+
+    printf("Black \r\n");
+	struct timespec start={0,0}, finish={0,0}; 
+    clock_gettime(CLOCK_REALTIME, &start);
+    EPD_4IN37G_Clear(EPD_4IN37G_WHITE); // WHITE
+    clock_gettime(CLOCK_REALTIME, &finish);
+    printf("%ld S\r\n", finish.tv_sec-start.tv_sec);	
+    DEV_Delay_ms(2000);
+
+    //Create a new image cache
+    UBYTE *BlackImage;
+    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 bmp
+    printf("show bmp------------------------\r\n");
+    Paint_SelectImage(BlackImage);
+    GUI_ReadBmp_RGB_4Color("./pic/4in37g0.bmp", 0, 0);
+    EPD_4IN37G_Display(BlackImage);
+    DEV_Delay_ms(2000);
+
+    printf("show bmp------------------------\r\n");
+    Paint_SelectImage(BlackImage);
+    GUI_ReadBmp_RGB_4Color("./pic/4in37g1.bmp", 0, 0);
+    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;
+}
+

RaspberryPi_JetsonNano/c/examples/EPD_7in3g_test.c

@@ -61,38 +61,36 @@ int EPD_7in3g_test(void)
     Paint_SetScale(4);
 
 #if 1   // show bmp
-
     printf("show BMP-----------------\r\n");
     Paint_SelectImage(BlackImage);
     GUI_ReadBmp_RGB_4Color("./pic/7.3inch-1.bmp", 0, 0);
     EPD_7IN3G_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(0x55);
+    Paint_Clear(EPD_7IN3G_WHITE);
 
     // 2.Drawing on the image
     printf("Drawing:BlackImage\r\n");
-    Paint_DrawPoint(10, 80, Red_4Color, DOT_PIXEL_1X1, DOT_STYLE_DFT);
-    Paint_DrawPoint(10, 90, Yellow_4Color, DOT_PIXEL_2X2, DOT_STYLE_DFT);
-    Paint_DrawPoint(10, 100, Black_4Color, DOT_PIXEL_3X3, DOT_STYLE_DFT);
-    Paint_DrawLine(20, 70, 70, 120, Red_4Color, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
-    Paint_DrawLine(70, 70, 20, 120, Red_4Color, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
-    Paint_DrawRectangle(20, 70, 70, 120, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
-    Paint_DrawRectangle(80, 70, 130, 120, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    Paint_DrawCircle(45, 95, 20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
-    Paint_DrawCircle(105, 95, 20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    Paint_DrawLine(85, 95, 125, 95, Red_4Color, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
-    Paint_DrawLine(105, 75, 105, 115, Yellow_4Color, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
-    Paint_DrawString_EN(10, 0, "Red, yellow, white and black", &Font16, Red_4Color, Yellow_4Color);
-    Paint_DrawString_EN(10, 35, "Four color e-Paper", &Font12, Yellow_4Color, Black_4Color);
-    Paint_DrawString_CN(10, 125, "΢ѩ����", &Font24CN, Red_4Color, White_4Color);
-    Paint_DrawNum(10, 50, 123456, &Font12, Red_4Color, White_4Color);
+    Paint_DrawPoint(10, 80, EPD_7IN3G_RED, DOT_PIXEL_1X1, DOT_STYLE_DFT);
+    Paint_DrawPoint(10, 90, EPD_7IN3G_YELLOW, DOT_PIXEL_2X2, DOT_STYLE_DFT);
+    Paint_DrawPoint(10, 100, EPD_7IN3G_BLACK, DOT_PIXEL_3X3, DOT_STYLE_DFT);
+    Paint_DrawLine(20, 70, 70, 120, EPD_7IN3G_RED, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
+    Paint_DrawLine(70, 70, 20, 120, EPD_7IN3G_RED, DOT_PIXEL_1X1, LINE_STYLE_SOLID);
+    Paint_DrawRectangle(20, 70, 70, 120, EPD_7IN3G_YELLOW, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
+    Paint_DrawRectangle(80, 70, 130, 120, EPD_7IN3G_YELLOW, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawCircle(45, 95, 20, EPD_7IN3G_BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
+    Paint_DrawCircle(105, 95, 20, EPD_7IN3G_BLACK, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+    Paint_DrawLine(85, 95, 125, 95, EPD_7IN3G_RED, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
+    Paint_DrawLine(105, 75, 105, 115, EPD_7IN3G_YELLOW, DOT_PIXEL_1X1, LINE_STYLE_DOTTED);
+    Paint_DrawString_EN(10, 0, "Red, yellow, white and black", &Font16, EPD_7IN3G_RED, EPD_7IN3G_YELLOW);
+    Paint_DrawString_EN(10, 35, "Four color e-Paper", &Font12, EPD_7IN3G_YELLOW, EPD_7IN3G_BLACK);
+    Paint_DrawString_CN(10, 125, "΢ѩ����", &Font24CN, EPD_7IN3G_RED, EPD_7IN3G_WHITE);
+    Paint_DrawNum(10, 50, 123456, &Font12, EPD_7IN3G_RED, EPD_7IN3G_WHITE);
 
     printf("EPD_Display\r\n");
     EPD_7IN3G_Display(BlackImage);
@@ -103,58 +101,24 @@ int EPD_7in3g_test(void)
     //1.Select Image
     printf("SelectImage:BlackImage\r\n");
     Paint_SelectImage(BlackImage);
-    Paint_Clear(0x55);
-
-    // 2.Drawing on the image
-    printf("Drawing:BlackImage\r\n");
-    // Paint_DrawRectangle(1, 1, 121, 368, Red_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    // Paint_DrawRectangle(392, 1, 512, 368, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    // Paint_DrawRectangle(1, 112, 512, 256, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    UBYTE iWidth = EPD_7IN3G_WIDTH/8;
-    UBYTE iHeight = EPD_7IN3G_HEIGHT/8;
-    for(UBYTE i=0; i<8; i++) {
-        if(i%2 == 0)
-            Paint_DrawRectangle(1, 1+(i*iHeight), 800, (i+1)*iHeight, Red_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-        else
-            Paint_DrawRectangle(1+(i*iWidth), 1, (i+1)*iWidth, 480, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-    }
+    Paint_Clear(EPD_7IN3G_WHITE);
 
-    printf("EPD_Display\r\n");
-    EPD_7IN3G_Display(BlackImage);
-    DEV_Delay_ms(3000);
-#endif
+    int hNumber, hWidth, vNumber, vWidth;
+    hNumber = 50;
+	hWidth = EPD_7IN3G_HEIGHT/hNumber; // 800/50=16
+    vNumber = 48;
+	vWidth = EPD_7IN3G_WIDTH/vNumber; // 480/48=10
 
-#if 1   // Drawing on the image
-    //1.Select Image
-    printf("SelectImage:BlackImage\r\n");
-    Paint_SelectImage(BlackImage);
-    Paint_Clear(0x55);
-
-    int wNumber, lNumber;
-    wNumber = (EPD_7IN3G_WIDTH/80)==0 ? (EPD_7IN3G_WIDTH/80) : (EPD_7IN3G_WIDTH/80)+1;
-    lNumber = (EPD_7IN3G_HEIGHT/20)==0 ? (EPD_7IN3G_HEIGHT/20) : (EPD_7IN3G_HEIGHT/20)+1;
     // 2.Drawing on the image
     printf("Drawing:BlackImage\r\n");
-    for(int j=0; j<lNumber; j++) {
-        if(j%2 == 0) {
-            for(int i=0; i<wNumber; i++) {
-                Paint_DrawRectangle(1+i*80, 1+j*20, 20+i*80, 20+j*20, Red_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(21+i*80, 1+j*20, 40+i*80, 20+j*20, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(41+i*80, 1+j*20, 60+i*80, 20+j*20, White_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(61+i*80, 1+j*20, 80+i*80, 20+j*20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-            }
+	for(int i=0; i<hNumber; i++) {  // horizontal
+		Paint_DrawRectangle(1, 1+i*hWidth, EPD_7IN3G_WIDTH, hWidth*(1+i), EPD_7IN3G_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_7IN3G_HEIGHT, EPD_7IN3G_YELLOW + (i/2%2), DOT_PIXEL_1X1, DRAW_FILL_FULL);
         }
-
-        else {
-            for(int i=0; i<wNumber; i++) {
-                Paint_DrawRectangle(1+i*80, 1+j*20, 20+i*80, 20+j*20, White_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(21+i*80, 1+j*20, 40+i*80, 20+j*20, Black_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(41+i*80, 1+j*20, 60+i*80, 20+j*20, Red_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-                Paint_DrawRectangle(61+i*80, 1+j*20, 80+i*80, 20+j*20, Yellow_4Color, DOT_PIXEL_1X1, DRAW_FILL_FULL);
-            }
-        }
-
-    }
+	}
 
     printf("EPD_Display\r\n");
     EPD_7IN3G_Display(BlackImage);

RaspberryPi_JetsonNano/c/examples/main.c

@@ -18,6 +18,7 @@ int main(void)
 	
     // EPD_1in64g_test();
     // EPD_3in0g_test();
+    // EPD_4in37g_test();
     // EPD_7in3g_test();
 
 	// EPD_1in54_DES_test();

RaspberryPi_JetsonNano/c/lib/GUI/GUI_Paint.c

@@ -245,7 +245,6 @@ void Paint_SetPixel(UWORD Xpoint, UWORD Ypoint, UWORD Color)
         UDOUBLE Addr = X / 4 + Y * Paint.WidthByte;
         Color = Color % 4;//Guaranteed color scale is 4  --- 0~3
         UBYTE Rdata = Paint.Image[Addr];
-        
         Rdata = Rdata & (~(0xC0 >> ((X % 4)*2)));//Clear first, then set value
         Paint.Image[Addr] = Rdata | ((Color << 6) >> ((X % 4)*2));
     }else if(Paint.Scale == 7){
@@ -264,14 +263,21 @@ parameter:
 ******************************************************************************/
 void Paint_Clear(UWORD Color)
 {	
-	if(Paint.Scale == 2 || Paint.Scale == 4){
+	if(Paint.Scale == 2) {
 		for (UWORD Y = 0; Y < Paint.HeightByte; Y++) {
 			for (UWORD X = 0; X < Paint.WidthByte; X++ ) {//8 pixel =  1 byte
 				UDOUBLE Addr = X + Y*Paint.WidthByte;
 				Paint.Image[Addr] = Color;
 			}
 		}		
-	}else if(Paint.Scale == 7){
+    }else if(Paint.Scale == 4) {
+        for (UWORD Y = 0; Y < Paint.HeightByte; Y++) {
+			for (UWORD X = 0; X < Paint.WidthByte; X++ ) {
+				UDOUBLE Addr = X + Y*Paint.WidthByte;
+				Paint.Image[Addr] = (Color<<6)|(Color<<4)|(Color<<2)|Color;
+			}
+		}		
+	}else if(Paint.Scale == 7) {
 		for (UWORD Y = 0; Y < Paint.HeightByte; Y++) {
 			for (UWORD X = 0; X < Paint.WidthByte; X++ ) {
 				UDOUBLE Addr = X + Y*Paint.WidthByte;
@@ -279,7 +285,6 @@ void Paint_Clear(UWORD Color)
 			}
 		}		
 	}
-
 }
 
 /******************************************************************************

RaspberryPi_JetsonNano/c/lib/GUI/GUI_Paint.h

@@ -127,13 +127,6 @@ typedef enum {
 #define  GRAY3 0x01 //gray
 #define  GRAY4 0x00 //white
 
-//colour
-#define  Black_4Color   0x00 
-#define  White_4Color   0x01
-#define  Yellow_4Color  0x02
-#define  Red_4Color     0x03
-
-
 /**
  * The size of the point
 **/

RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_1in64g.c

@@ -127,7 +127,6 @@ void EPD_1IN64G_Init(void)
     EPD_1IN64G_SendCommand(0xB0);
     EPD_1IN64G_SendData(0x03);//1 boost 20211113
 
-
     EPD_1IN64G_SendCommand(0x00);
     EPD_1IN64G_SendData(0x4F);
     EPD_1IN64G_SendData(0x6B);
@@ -187,9 +186,7 @@ void EPD_1IN64G_Clear(UBYTE color)
     EPD_1IN64G_SendCommand(0x10);
     for (UWORD j = 0; j < Height; j++) {
         for (UWORD i = 0; i < Width; i++) {
-            for(UBYTE k = 0; k < 4; k++) {
-                EPD_1IN64G_SendData(color);
-            }
+                EPD_1IN64G_SendData((color << 6) | (color << 4) | (color << 2) | color);
         }
     }
 
@@ -221,6 +218,10 @@ void EPD_1IN64G_Display(UBYTE *Image)
             EPD_1IN64G_SendData(Image[i + j * Width]);
         }
     }
+    
+    EPD_1IN64G_SendCommand(0x68);
+    EPD_1IN64G_SendData(0x00);
+
     EPD_1IN64G_TurnOnDisplay();
 }
 

RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_1in64g.h

@@ -18,11 +18,11 @@
 #define EPD_1IN64G_WIDTH       168
 #define EPD_1IN64G_HEIGHT      168
 
-//colour
-#define  EPD_1IN64G_BLACK   0x00 
-#define  EPD_1IN64G_WHITE   0x55
-#define  EPD_1IN64G_YELLOW  0xAA
-#define  EPD_1IN64G_RED     0xFF
+// Color
+#define  EPD_1IN64G_BLACK   0x0 
+#define  EPD_1IN64G_WHITE   0x1
+#define  EPD_1IN64G_YELLOW  0x2
+#define  EPD_1IN64G_RED     0x3
 
 void EPD_1IN64G_Init(void);
 void EPD_1IN64G_Clear(UBYTE color);

RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_3in0g.c

@@ -134,13 +134,11 @@ void EPD_3IN0G_Init(void)
     EPD_3IN0G_SendData(0x4F);
     EPD_3IN0G_SendData(0x6B);
 
-
     EPD_3IN0G_SendCommand(0x06);
     EPD_3IN0G_SendData(0xD7);
     EPD_3IN0G_SendData(0xDE);
     EPD_3IN0G_SendData(0x12);
 
-
     EPD_3IN0G_SendCommand(0x61);
     EPD_3IN0G_SendData(0x00);
     EPD_3IN0G_SendData(0xA8);
@@ -177,7 +175,7 @@ void EPD_3IN0G_Clear(UBYTE color)
     EPD_3IN0G_SendCommand(0x10);
     for (UWORD j = 0; j < Height; j++) {
         for (UWORD i = 0; i < Width; i++) {
-            EPD_3IN0G_SendData(color);
+            EPD_3IN0G_SendData((color << 6) | (color << 4) | (color << 2) | color);
         }
     }
 
@@ -203,6 +201,7 @@ void EPD_3IN0G_Display(UBYTE *Image)
             EPD_3IN0G_SendData(Image[i + j * Width]);
         }
     }
+
     EPD_3IN0G_TurnOnDisplay();
 }
 

RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_3in0g.h

@@ -18,11 +18,11 @@
 #define EPD_3IN0G_WIDTH       168
 #define EPD_3IN0G_HEIGHT      400
 
-//colour
-#define  EPD_3IN0G_BLACK   0x00 
-#define  EPD_3IN0G_WHITE   0x55
-#define  EPD_3IN0G_YELLOW  0xAA
-#define  EPD_3IN0G_RED     0xFF
+// Color
+#define  EPD_3IN0G_BLACK   0x0
+#define  EPD_3IN0G_WHITE   0x1
+#define  EPD_3IN0G_YELLOW  0x2
+#define  EPD_3IN0G_RED     0x3
 
 void EPD_3IN0G_Init(void);
 void EPD_3IN0G_Clear(UBYTE color);

RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_4in37g.c

@@ -0,0 +1,240 @@
+/*****************************************************************************
+* | File      	:   EPD_4in37g.h
+* | Author      :   Waveshare team
+* | Function    :   4.37inch e-Paper (G)
+* | Info        :
+*----------------
+* |	This version:   V1.0
+* | Date        :   2022-08-15
+* | Info        :
+* -----------------------------------------------------------------------------
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documnetation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to  whom the Software is
+# furished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+******************************************************************************/
+#include "EPD_4in37g.h"
+#include "Debug.h"
+
+/******************************************************************************
+function :	Software reset
+parameter:
+******************************************************************************/
+static void EPD_4IN37G_Reset(void)
+{
+    DEV_Digital_Write(EPD_RST_PIN, 1);
+    DEV_Delay_ms(20);
+    DEV_Digital_Write(EPD_RST_PIN, 0);
+    DEV_Delay_ms(2);
+    DEV_Digital_Write(EPD_RST_PIN, 1);
+    DEV_Delay_ms(20);
+}
+
+/******************************************************************************
+function :	send command
+parameter:
+     Reg : Command register
+******************************************************************************/
+static void EPD_4IN37G_SendCommand(UBYTE Reg)
+{
+    DEV_Digital_Write(EPD_DC_PIN, 0);
+    DEV_Digital_Write(EPD_CS_PIN, 0);
+    DEV_SPI_WriteByte(Reg);
+    DEV_Digital_Write(EPD_CS_PIN, 1);
+}
+
+/******************************************************************************
+function :	send data
+parameter:
+    Data : Write data
+******************************************************************************/
+static void EPD_4IN37G_SendData(UBYTE Data)
+{
+    DEV_Digital_Write(EPD_DC_PIN, 1);
+    DEV_Digital_Write(EPD_CS_PIN, 0);
+    DEV_SPI_WriteByte(Data);
+    DEV_Digital_Write(EPD_CS_PIN, 1);
+}
+
+/******************************************************************************
+function :	Wait until the busy_pin goes LOW
+parameter:
+******************************************************************************/
+static void EPD_4IN37G_ReadBusyH(void)
+{
+    Debug("e-Paper busy H\r\n");
+    while(!DEV_Digital_Read(EPD_BUSY_PIN)) {      //LOW: busy, HIGH: idle
+        DEV_Delay_ms(5);
+    }
+    Debug("e-Paper busy H release\r\n");
+}
+static void EPD_4IN37G_ReadBusyL(void)
+{
+    Debug("e-Paper busy L\r\n");
+    while(DEV_Digital_Read(EPD_BUSY_PIN)) {      //LOW: idle, HIGH: busy
+        DEV_Delay_ms(5);
+    }
+    Debug("e-Paper busy L release\r\n");
+}
+
+/******************************************************************************
+function :	Turn On Display
+parameter:
+******************************************************************************/
+static void EPD_4IN37G_TurnOnDisplay(void)
+{
+    EPD_4IN37G_SendCommand(0x12); // DISPLAY_REFRESH
+    EPD_4IN37G_SendData(0x00);
+    EPD_4IN37G_ReadBusyH();
+
+    EPD_4IN37G_SendCommand(0x02); // POWER_OFF
+    EPD_4IN37G_SendData(0X00);
+    EPD_4IN37G_ReadBusyH();
+}
+
+/******************************************************************************
+function :	Initialize the e-Paper register
+parameter:
+******************************************************************************/
+void EPD_4IN37G_Init(void)
+{
+    EPD_4IN37G_Reset();
+
+    EPD_4IN37G_SendCommand(0xAA);
+    EPD_4IN37G_SendData(0x49);
+    EPD_4IN37G_SendData(0x55);
+    EPD_4IN37G_SendData(0x20);
+	EPD_4IN37G_SendData(0x08);
+	EPD_4IN37G_SendData(0x09);
+    EPD_4IN37G_SendData(0x18);
+
+    EPD_4IN37G_SendCommand(0x01);
+    EPD_4IN37G_SendData(0x3F);
+
+    EPD_4IN37G_SendCommand(0x00);
+    EPD_4IN37G_SendData(0x4F);
+    EPD_4IN37G_SendData(0x69);
+
+    EPD_4IN37G_SendCommand(0x05);
+    EPD_4IN37G_SendData(0x40);
+    EPD_4IN37G_SendData(0x1F);
+    EPD_4IN37G_SendData(0x1F);
+    EPD_4IN37G_SendData(0x2C);
+
+    EPD_4IN37G_SendCommand(0x08);
+    EPD_4IN37G_SendData(0x6F);
+    EPD_4IN37G_SendData(0x1F);
+    EPD_4IN37G_SendData(0x1F);
+    EPD_4IN37G_SendData(0x22);
+
+	//===================
+	//20211212
+	//First setting
+    EPD_4IN37G_SendCommand(0x06);
+    EPD_4IN37G_SendData(0x6F);
+    EPD_4IN37G_SendData(0x1F);
+    EPD_4IN37G_SendData(0x17);
+    EPD_4IN37G_SendData(0x17);
+	//===================
+	
+    EPD_4IN37G_SendCommand(0x03);
+    EPD_4IN37G_SendData(0x00);
+    EPD_4IN37G_SendData(0x54);
+    EPD_4IN37G_SendData(0x00);
+    EPD_4IN37G_SendData(0x44); 
+
+    EPD_4IN37G_SendCommand(0x50);
+    EPD_4IN37G_SendData(0x3F);
+
+    EPD_4IN37G_SendCommand(0x60);
+    EPD_4IN37G_SendData(0x02);
+    EPD_4IN37G_SendData(0x00);
+
+	//Please notice that PLL must be set for version 2 IC
+    EPD_4IN37G_SendCommand(0x30);
+    EPD_4IN37G_SendData(0x08);
+	
+    EPD_4IN37G_SendCommand(0x61);
+    EPD_4IN37G_SendData(0x02);
+    EPD_4IN37G_SendData(0x00);
+    EPD_4IN37G_SendData(0x01); 
+    EPD_4IN37G_SendData(0x70); 
+
+    EPD_4IN37G_SendCommand(0xE3);
+    EPD_4IN37G_SendData(0x2F);
+
+    EPD_4IN37G_SendCommand(0x84);
+    EPD_4IN37G_SendData(0x01);
+}
+
+/******************************************************************************
+function :	Clear screen
+parameter:
+******************************************************************************/
+void EPD_4IN37G_Clear(UBYTE color)
+{
+    UWORD Width, Height;
+    Width = (EPD_4IN37G_WIDTH % 4 == 0)? (EPD_4IN37G_WIDTH / 4 ): (EPD_4IN37G_WIDTH / 4 + 1);
+    Height = EPD_4IN37G_HEIGHT;
+    
+    EPD_4IN37G_SendCommand(0x04);
+    EPD_4IN37G_ReadBusyH();
+
+    EPD_4IN37G_SendCommand(0x10);
+    for (UWORD j = 0; j < Height; j++) {
+        for (UWORD i = 0; i < Width; i++) {
+            EPD_4IN37G_SendData((color << 6) | (color << 4) | (color << 2) | color);
+        }
+    }
+    EPD_4IN37G_TurnOnDisplay();
+}
+
+/******************************************************************************
+function :	Sends the image buffer in RAM to e-Paper and displays
+parameter:
+******************************************************************************/
+void EPD_4IN37G_Display(UBYTE *Image)
+{
+    UWORD Width, Height;
+    Width = (EPD_4IN37G_WIDTH % 4 == 0)? (EPD_4IN37G_WIDTH / 4 ): (EPD_4IN37G_WIDTH / 4 + 1);
+    Height = EPD_4IN37G_HEIGHT;
+    
+    EPD_4IN37G_SendCommand(0x04);
+    EPD_4IN37G_ReadBusyH();
+
+    EPD_4IN37G_SendCommand(0x10);
+    for (UWORD j = 0; j < Height; j++) {
+        for (UWORD i = 0; i < Width; i++) {
+            EPD_4IN37G_SendData(Image[i + j * Width]);
+        }
+    }
+    EPD_4IN37G_TurnOnDisplay();
+}
+
+/******************************************************************************
+function :	Enter sleep mode
+parameter:
+******************************************************************************/
+void EPD_4IN37G_Sleep(void)
+{
+    EPD_4IN37G_SendCommand(0x02); // POWER_OFF
+    EPD_4IN37G_SendData(0X00);
+    EPD_4IN37G_SendCommand(0x07); // DEEP_SLEEP
+    EPD_4IN37G_SendData(0XA5);
+}
+

RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_4in37g.h

@@ -0,0 +1,51 @@
+/*****************************************************************************
+* | File      	:   EPD_4in37g.c
+* | Author      :   Waveshare team
+* | Function    :   4.37inch e-Paper (G)
+* | Info        :
+*----------------
+* |	This version:   V1.0
+* | Date        :   2022-08-15
+* | Info        :
+* -----------------------------------------------------------------------------
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documnetation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to  whom the Software is
+# furished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+******************************************************************************/
+#ifndef __EPD_4IN37G_H_
+#define __EPD_4IN37G_H_
+
+#include "DEV_Config.h"
+
+// Display resolution
+#define EPD_4IN37G_WIDTH		512
+#define EPD_4IN37G_HEIGHT		368
+
+// Color
+#define EPD_4IN37G_BLACK		0x0
+#define EPD_4IN37G_WHITE		0x1
+#define EPD_4IN37G_YELLOW		0x2
+#define EPD_4IN37G_RED			0x3
+
+void EPD_4IN37G_Init(void);
+void EPD_4IN37G_Clear(UBYTE color);
+void EPD_4IN37G_Display(UBYTE *Image);
+void EPD_4IN37G_Sleep(void);
+
+#endif

RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_7in3g.c

@@ -132,7 +132,6 @@ void EPD_7IN3G_Init(void)
     EPD_7IN3G_SendData(0x4F);
     EPD_7IN3G_SendData(0x69);
 
-
     EPD_7IN3G_SendCommand(0x05);
     EPD_7IN3G_SendData(0x40);
     EPD_7IN3G_SendData(0x1F);
@@ -168,9 +167,6 @@ void EPD_7IN3G_Init(void)
     EPD_7IN3G_SendCommand(0x30);
     EPD_7IN3G_SendData(0x08);
 
-
-
-
     EPD_7IN3G_SendCommand(0x50);
     EPD_7IN3G_SendData(0x3F);
 
@@ -203,10 +199,9 @@ void EPD_7IN3G_Clear(UBYTE color)
     EPD_7IN3G_SendCommand(0x10);
     for (UWORD j = 0; j < Height; j++) {
         for (UWORD i = 0; i < Width; i++) {
-            EPD_7IN3G_SendData(color);
+            EPD_7IN3G_SendData((color << 6) | (color << 4) | (color << 2) | color);
         }
     }
-
     EPD_7IN3G_TurnOnDisplay();
 }
 

RaspberryPi_JetsonNano/c/lib/e-Paper/EPD_7in3g.h

@@ -38,11 +38,11 @@
 #define EPD_7IN3G_WIDTH       800
 #define EPD_7IN3G_HEIGHT      480
 
-//colour
-#define  EPD_7IN3G_BLACK   0x00 
-#define  EPD_7IN3G_WHITE   0x55
-#define  EPD_7IN3G_YELLOW  0xAA
-#define  EPD_7IN3G_RED     0xFF
+// Color
+#define  EPD_7IN3G_BLACK   0x0
+#define  EPD_7IN3G_WHITE   0x1
+#define  EPD_7IN3G_YELLOW  0x2
+#define  EPD_7IN3G_RED     0x3
 
 void EPD_7IN3G_Init(void);
 void EPD_7IN3G_Clear(UBYTE color);

RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd4in37g.py

@@ -210,7 +210,7 @@ class EPD:
         self.send_command(0x10)
         for j in range(0, Height):
             for i in range(0, Width):
-                    self.send_data(image[i + j * Width])
+                self.send_data(image[i + j * Width])
         self.TurnOnDisplay()
         
     def Clear(self, color=0x55):

RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd7in3g.py

@@ -225,7 +225,7 @@ class EPD:
         self.send_command(0x10)
         for j in range(0, Height):
             for i in range(0, Width):
-                    self.send_data(color)
+                self.send_data(color)
 
         self.TurnOnDisplay()