added printf header

tobozo · web-flow · commit c1fe7c1374a3 · 2022-10-26T11:41:49.000+02:00
diff --git a/cores/arduino/Print.h b/cores/arduino/Print.h
@@ -57,6 +57,8 @@ class Print
     size_t write(const char *buffer, size_t size) {
       return write((const uint8_t *)buffer, size);
     }
+  
+    size_t printf(const char * format, ...)  __attribute__ ((format (printf, 2, 3)));
 
     // default to zero, meaning "a single write may block"
     // should be overridden by subclasses with buffering

Original file line number	Diff line number	Diff line change
`@@ -57,6 +57,8 @@ class Print`
`57`	`57`	`size_t write(const char *buffer, size_t size) {`
`58`	`58`	`return write((const uint8_t *)buffer, size);`
`59`	`59`	`}`
	`60`	`+`
	`61`	`+ size_t printf(const char * format, ...) __attribute__ ((format (printf, 2, 3)));`
`60`	`62`
`61`	`63`	`// default to zero, meaning "a single write may block"`
`62`	`64`	`// should be overridden by subclasses with buffering`