Using a new way of running, you do not need to modify main.c, and specify the program to run directly at make time.

RaspberryPi_JetsonNano/c/Makefile

@@ -13,8 +13,8 @@ JETSON_DEV_C = $(wildcard $(DIR_BIN)/sysfs_software_spi.o $(DIR_BIN)/sysfs_gpio.
 
 DEBUG = -D DEBUG
 
- USELIB_RPI = USE_BCM2835_LIB
+USELIB_RPI = USE_BCM2835_LIB
-#USELIB_RPI = USE_WIRINGPI_LIB
+# USELIB_RPI = USE_WIRINGPI_LIB
 # USELIB_RPI = USE_DEV_LIB
 
 LIB_RPI=-Wl,--gc-sections
@@ -41,10 +41,11 @@ DEBUG_JETSONI = -D $(USELIB_JETSONI) -D JETSON
 RPI:RPI_DEV RPI_epd 
 JETSON: JETSON_DEV JETSON_epd
 
+EPD = NULL
 TARGET = epd
 CC = gcc
 MSG = -g -O -ffunction-sections -fdata-sections -Wall
-CFLAGS += $(MSG)
+CFLAGS += $(MSG) -D $(EPD)
 
 RPI_epd:${OBJ_O}
 	echo $(@)

RaspberryPi_JetsonNano/c/examples/main.c

@@ -16,90 +16,172 @@ int main(void)
     // Exception handling:ctrl + c
     signal(SIGINT, Handler);
 	
-    // EPD_1in64g_test();
+#ifdef _1in64g
-    // EPD_2in36g_test();
+    EPD_1in64g_test();
-    // EPD_3in0g_test();
-    // EPD_4in37g_test();
-    // EPD_7in3g_test();
-
-	// EPD_1in54_DES_test();
-	// EPD_2in13_DES_test();
-	// EPD_2in9_DES_test();
-
-    // EPD_1in02d_test();
-
-    // EPD_1in54_test();
-    // EPD_1in54_V2_test();
-    // EPD_1in54b_test();
-    // EPD_1in54b_V2_test();
-    // EPD_1in54c_test();
-
-	// EPD_2in66_test();
-	// EPD_2in66b_test();
-
-    // EPD_2in7_test();
-	// EPD_2in7_V2_test();
-    // EPD_2in7b_test();
-	// EPD_2in7b_V2_test();
-
-    // EPD_2in9_test();
-	// EPD_2in9_V2_test();
-    // EPD_2in9bc_test();
-    // EPD_2in9b_V3_test();
-    // EPD_2in9d_test();
-
-    // EPD_2in13_test();
-	// EPD_2in13_V2_test();
-	// EPD_2in13_V3_test();
-    // EPD_2in13bc_test();
-    // EPD_2in13b_V3_test();
-	// EPD_2in13b_V4_test();
-    // EPD_2in13d_test();
-
-    // EPD_3in52_test();
-    // EPD_3in7_test();
-
-	// EPD_4in01f_test();
-
-    // EPD_4in2_test();
-	// EPD_4in2_V2_test();
-    // EPD_4in2bc_test();
-    // EPD_4in2b_V2_test();
-
-	// EPD_4in37b_test();
-
-	// EPD_5in65f_test();
-
-    // EPD_5in83_test();
-    // EPD_5in83_V2_test();
-    // EPD_5in83bc_test();
-    // EPD_5in83b_V2_test();
-
-	// EPD_5in84_test();
 	
-    // EPD_7in5_test();
+#elif _2in36g
-    // EPD_7in5_V2_test();
+    EPD_2in36g_test();
-
-    // EPD_7in5bc_test();
-    // EPD_7in5b_V2_test();
-    
-    // EPD_7in5_HD_test();
-    // EPD_7in5b_HD_test();
-    
-	// EPD_10in2b_test();
 	
-	// EPD_13in3_test();
+#elif _3in0g
+    EPD_3in0g_test();
 	
+#elif _4in37g
+    EPD_4in37g_test();
+	
+#elif _7in3g
+    EPD_7in3g_test();
+	
+#elif _1in54des
+	EPD_1in54_DES_test();
+	
+#elif _2in13des
+	EPD_2in13_DES_test();
+	
+#elif _2in9des
+	EPD_2in9_DES_test();
+	
+#elif _1in02d
+    EPD_1in02d_test();
+	
+#elif _1in54
+    EPD_1in54_test();
+	
+#elif _1in54V2
+    EPD_1in54_V2_test();
+	
+#elif _1in54b
+    EPD_1in54b_test();
+	
+#elif _1in54bV2
+    EPD_1in54b_V2_test();
+	
+#elif _1in54c
+    EPD_1in54c_test();
+	
+#elif _2in66
+	EPD_2in66_test();
+	
+#elif _2in66b
+	EPD_2in66b_test();
+	
+#elif _2in7
+    EPD_2in7_test();
+	
+#elif _2in7V2
+	EPD_2in7_V2_test();
+	
+#elif _2in7b
+    EPD_2in7b_test();
+	
+#elif _2in7bV2
+	EPD_2in7b_V2_test();
+	
+#elif _2in9
+    EPD_2in9_test();
+	
+#elif _2in9V2
+	EPD_2in9_V2_test();
+	
+#elif _2in9bc
+    EPD_2in9bc_test();
+	
+#elif _2in9bV3
+    EPD_2in9b_V3_test();
+	
+#elif _2in9d
+    EPD_2in9d_test();
+	
+#elif _2in13
+    EPD_2in13_test();
+	
+#elif _2in13V2
+	EPD_2in13_V2_test();
+	
+#elif _2in13V3
+	EPD_2in13_V3_test();
+	
+#elif _2in13bc
+    EPD_2in13bc_test();
+	
+#elif _2in13bV3
+    EPD_2in13b_V3_test();
+	
+#elif _2in13bV4
+	EPD_2in13b_V4_test();
+	
+#elif _2in13d
+    EPD_2in13d_test();
+	
+#elif _3in52
+    EPD_3in52_test();
+	
+#elif _3in7
+    EPD_3in7_test();
+	
+#elif _4in01f
+	EPD_4in01f_test();
+	
+#elif _4in2
+    EPD_4in2_test();
+	
+#elif _4in2V2
+	EPD_4in2_V2_test();
+	
+#elif _4in2bc
+    EPD_4in2bc_test();
+	
+#elif _4in2bV2
+    EPD_4in2b_V2_test();
+	
+#elif _4in37b
+	EPD_4in37b_test();
+	
+#elif _5in65f
+	EPD_5in65f_test();
+	
+#elif _5in83
+    EPD_5in83_test();
+	
+#elif _5in83V2
+    EPD_5in83_V2_test();
+	
+#elif _5in83bc
+    EPD_5in83bc_test();
+	
+#elif _5in83bV2
+    EPD_5in83b_V2_test();
+	
+#elif _5in84
+	EPD_5in84_test();
+	
+#elif _7in5
+    EPD_7in5_test();
+	
+#elif _7in5V2
+    EPD_7in5_V2_test();
+	
+#elif _7in5bc
+    EPD_7in5bc_test();
+	
+#elif _7in5bV2
+    EPD_7in5b_V2_test();
+	
+#elif _7in5HD
+    EPD_7in5_HD_test();
+	
+#elif _7in5bHD
+    EPD_7in5b_HD_test();
+	
+#elif _10in2b
+	EPD_10in2b_test();
+	
+#elif _13in3
+	EPD_13in3_test();
+#else
+	printf("Please specify the EPD model when making. \r\n");
+	printf("Example: When you run the EPD_7in5_V2_test() program, input: sudo make clean && make -j6 EPD=_7in5V2 \r\n");
+	printf("Don't know which program you need to run? Refer to the user manual (Wiki) and main.c \r\n");
+#endif
 	
-	// 	For Test
-    // if(DEV_Module_Init()!=0){
-        // return -1;
-    // }
-	// while(1) {
-	    // EPD_7in5b_V2_test(); 
-		// DEV_Delay_ms(10000);
-	// }
-	// DEV_Module_Exit();
-	// 
     return 0;
 }