working print to the terminal

hod6/main.cpp

@@ -4,7 +4,9 @@
 
 #define TARGET_TX_PIN USBTX
 #define TARGET_RX_PIN USBRX
-#define BAUD_RATE 115200
+#define BAUD_RATE 1843200
+// #define BAUD_RATE 460800
+// #define BAUD_RATE 921600
 
 static BufferedSerial serial_port(TARGET_TX_PIN, TARGET_RX_PIN, BAUD_RATE);
 
@@ -18,22 +20,48 @@ DigitalOut led(LED1);
 #define BUFFER_SIZE 64
 static char rx_buffer[BUFFER_SIZE];
 
-// Draw shifting mask with optional centered text
+// Draw a moving “sky + ground” background with optional message
 void draw_mask(uint32_t mask, int shift, const char *text = nullptr)
 {
-    printf("\033[2J\033[H");  // clear + home
+    const int width = 80;   // terminal columns
+    const int height = 24;  // terminal rows
+    const int horizon = 16; // sky ends here, ground below
 
-    for (int byte = 3; byte >= 0; byte--) {
+    printf("\033[2J\033[H"); // clear + home
-        uint8_t b = ((mask >> (byte * 8)) & 0xFF);
+
-        // Circular shift for movement illusion
+    // draw sky layer (moving clouds)
-        uint8_t rotated = (b << shift) | (b >> (8 - shift));
+    for (int y = 0; y < horizon; y++) {
-        for (int i = 7; i >= 0; i--) {
+        for (int x = 0; x < width; x++) {
-            printf("%c", (rotated & (1 << i)) ? '#' : '.');
+            // Parallax: slower movement at top
+            int move = (shift / 2 + y) % width;
+            char c = ((x + move) % 11 == 0) ? '☁' : ' ';
+            printf("%c", c);
         }
         printf("\r\n");
     }
 
-    // Message under the mask
+    // draw horizon line
+    for (int i = 0; i < width; i++) printf("-");
+    printf("\r\n");
+
+    // draw ground (grass / terrain)
+    for (int y = horizon + 1; y < height; y++) {
+        for (int x = 0; x < width; x++) {
+            int move = (shift * 2 + y) % width;
+            // simple wave pattern for terrain / hill
+            char c;
+            if (((x + move) % 7) == 0)
+                c = '^';
+            else if (((x + move) % 5) == 0)
+                c = '`';
+            else
+                c = ' ';
+            printf("%c", c);
+        }
+        printf("\r\n");
+    }
+
+    // optional text overlay at bottom
     if (text && text[0] != '\0') {
         printf("\r\n[RX] %s\r\n", text);
     }
@@ -77,7 +105,7 @@ int main(void)
 	//	shift = (shift + 1) % 8;
 
         // }
-        if (anim_timer.elapsed_time() >= 100ms) {
+        if (anim_timer.elapsed_time() >= 200ms) {
             shift = (shift + 1) % 8;
             anim_timer.reset();