[lcd] forbid writing to non-existant framebuffers

2025-04-19 15:04:15 +03:00 · 2025-04-19 15:04:15 +03:00 · ee3249beca
parent cc32a3092a
commit ee3249beca
1 changed files with 3 additions and 0 deletions
--- a/Core/Src/lcd.c
+++ b/Core/Src/lcd.c
@ -136,6 +136,9 @@ static void display_write_data_byte_direct(uint8_t code)

 static void display_write_data_byte_framebuffer(uint8_t code)
 {
+	if (display_current_frame >= DISPLAY_FRAMES_AVAILABLE)
+		return;
+
 	display_framebuffer[16*2*display_current_frame + des.cursor_offset] = (char) code;
 	des.cursor_offset += des.next ? -1 : 1;
 }