show commands as typed on screen

CMakeLists.txt

@@ -60,7 +60,7 @@ target_include_directories(eink_api PRIVATE
 
 # Add the standard library to the build
 target_link_libraries(eink_api
-        pico_stdlib ePaper GUI Fonts hardware_spi)
+        pico_stdlib ePaper GUI Fonts hardware_spi pico_multicore)
 
 # Add the standard include files to the build
 target_include_directories(eink_api PRIVATE

eink_api.c

@@ -2,6 +2,8 @@
 #include <stdlib.h>
 #include <string.h>
 #include "pico/stdlib.h"
+#include "pico/multicore.h"
+#include "pico/util/queue.h"
 
 // e-Paper library includes
 #include "DEV_Config.h"
@@ -12,7 +14,10 @@
 //Create a new image cache
 UBYTE *BlackImage;
 
+queue_t q;
+
 void process_command(char *cmd);
+void core1_entry();
 
 int epaper_init()
 {
@@ -34,7 +39,6 @@ int epaper_init()
     }
     printf("Paint_NewImage\r\n");
     Paint_NewImage(BlackImage, EPD_4IN2_V2_WIDTH, EPD_4IN2_V2_HEIGHT, 0, WHITE);
-    EPD_4IN2_V2_PartialDisplay(BlackImage, 0, 0, EPD_4IN2_V2_WIDTH, EPD_4IN2_V2_HEIGHT);
     
     return 1;
 }
@@ -44,8 +48,8 @@ int epaper_init()
 int epaper_close()
 {
     DEV_Delay_ms(1000);
-    // EPD_4IN2_V2_Init();
+    EPD_4IN2_V2_Init();
-    // EPD_4IN2_V2_Clear();
+    EPD_4IN2_V2_Clear();
     printf("Goto Sleep...\r\n");
     EPD_4IN2_V2_Sleep();
     free(BlackImage);
@@ -64,7 +68,7 @@ void process_command(char *cmd)
         Paint_Clear(WHITE);
         printf("e-Paper cleared\n");
     } else if (strcmp(cmd, "display") == 0) {
-        EPD_4IN2_V2_PartialDisplay(BlackImage, 0, 0, EPD_4IN2_V2_WIDTH, EPD_4IN2_V2_HEIGHT);
+        EPD_4IN2_V2_Display(BlackImage);
         printf("Display updated\n");
     } else if (strcmp(cmd, "draw_test") == 0) {
         Paint_Clear(WHITE);
@@ -78,7 +82,7 @@ void process_command(char *cmd)
         int x, y;
         char text[200];
         if (sscanf(cmd, "draw_text %d %d %199[^\n]", &x, &y, text) == 3) {
-            Paint_DrawString_EN(x, y, text, &Font16, WHITE, BLACK);
+            Paint_DrawString_EN(x, y, text, &Font24, BLACK, WHITE);
             printf("Drew text at %d, %d: %s\n", x, y, text);
         } else {
             printf("Invalid draw_text command format. Use: draw_text x y text\n");
@@ -139,36 +143,75 @@ void process_command(char *cmd)
     }
 }
 
+void core1_entry() {
+    epaper_init();
+    
+    EPD_4IN2_V2_Display(BlackImage);
+
+    char cmd_buffer[256];
+    int i = 0;
+
+    while (true) {
+        bool newChar = false;
+        while (!queue_is_empty(&q)) {
+            int c;
+            queue_remove_blocking(&q, &c);
+            newChar = true;
+
+            if (c == '\n' || c == '\r') {
+                cmd_buffer[i] = '\0';
+                process_command(cmd_buffer);
+                i = 0;
+                // Clear the command buffer display area
+                Paint_ClearWindows(1, 281, 399, 299, WHITE);
+                break;
+            } else if (c == '\b' || c == 127) { // Handle backspace
+                if (i > 0) {
+                    i--;
+                }
+            } else {
+                if (i < (sizeof(cmd_buffer) - 1)) {
+                    cmd_buffer[i++] = c;
+                }
+            }
+            
+        }
+        if(newChar){
+            cmd_buffer[i] = '\0';
+            //char text[200];
+            //sscanf(cmd_buffer, "199[^\n]", text);
+            
+            // Update the command buffer display
+            Paint_ClearWindows(2, 271, 399, 299, WHITE);
+            Paint_DrawRectangle(1, 270, 400, 300, BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
+            // printf("Current: %s, buff:%s\n", text, cmd_buffer);
+            Paint_DrawString_EN(10, 275, cmd_buffer, &Font24, WHITE, BLACK);
+            EPD_4IN2_V2_PartialDisplay(BlackImage, 0, 0, 400, 300);
+        }
+    }
+}
 
 
 int main()
 {
     stdio_init_all();
-
-    epaper_init();
     
     printf("e-ink api ready\n");
+    
+    queue_init(&q, sizeof(int), 256);
+    
+    multicore_launch_core1(core1_entry);
 
-    char cmd_buffer[256];
-    int i = 0;
     while (true) {
         int c = getchar_timeout_us(0);
         if (c != PICO_ERROR_TIMEOUT) {
+            queue_add_blocking(&q, &c);
             if (c == '\n' || c == '\r') {
-                printf("\n");
+                 printf("\n");
-                cmd_buffer[i] = '\0';
+            } else if (c == '\b' || c == 127) {
-                process_command(cmd_buffer);
+                 printf("\b \b");
-                i = 0;
-            } else if (c == '\b' || c == 127) { // Handle backspace
-                if (i > 0) {
-                    i--;
-                    printf("\b \b");
-                }
             } else {
-                if (i < (sizeof(cmd_buffer) - 1)) {
+                printf("%c", c);
-                    cmd_buffer[i++] = c;
-                    printf("%c", c);
-                }
             }
         }
     }