oled printf

cube/User/Src/oled.c

@@ -9,6 +9,8 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
 
 #include <oled.h>
 #include <oled-fonts.h>
@@ -561,4 +563,14 @@ void oledPrint(char msg[]) {
     lines[MAX_LINES - 1][MAX_CHARS - 1] = 0;
     oled_P6x8Str(1, MAX_LINES - 1, lines[MAX_LINES - 1]);
   }
-}
+}
+
+
+void oledPrintf(const char *format, ...) {
+    va_list vl;
+    va_start(vl, format);
+    char buf[MAX_CHARS+1];
+    vsnprintf(buf, MAX_CHARS, format, vl);
+    va_end(vl);
+    oledPrint(buf);
+}