Override printf for Uart

h2zero · h2zero · commit 9495e5a1278e · 2025-01-14T16:03:22.000-07:00
diff --git a/cores/nRF5/Print.h b/cores/nRF5/Print.h
@@ -83,7 +83,8 @@ class Print
     size_t println(double, int = 2);
     size_t println(const Printable&);
     size_t println(void);
-    int    printf(const char* format, ...) __attribute__ ((format (printf, 2, 3)));
+
+    virtual int  printf(const char* format, ...);
 
     virtual void flush() { /* Empty implementation for backward compatibility */ }
 
diff --git a/cores/nRF5/Uart.cpp b/cores/nRF5/Uart.cpp
@@ -202,6 +202,15 @@ void Uart::end()
   rxBuffer.clear();
 }
 
+int Uart::printf(const char* format, ...)
+{
+  va_list va;
+  va_start(va, format);
+  int ret = vprintf(format, va);
+  va_end(va);
+  return ret;
+}
+
 void Uart::flush()
 {
 }
diff --git a/cores/nRF5/Uart.h b/cores/nRF5/Uart.h
@@ -43,6 +43,7 @@ class Uart : public HardwareSerial
     int read();
     void flush();
     size_t write(const uint8_t data);
+    int printf(const char* format, ...) override;
     using Print::write; // pull in write(str) and write(buf, size) from Print
 
     void IrqHandler();

Original file line number	Diff line number	Diff line change
`@@ -202,6 +202,15 @@ void Uart::end()`
`202`	`202`	`rxBuffer.clear();`
`203`	`203`	`}`
`204`	`204`
	`205`	`+int Uart::printf(const char* format, ...)`
	`206`	`+{`
	`207`	`+ va_list va;`
	`208`	`+ va_start(va, format);`
	`209`	`+ int ret = vprintf(format, va);`
	`210`	`+ va_end(va);`
	`211`	`+ return ret;`
	`212`	`+}`
	`213`	`+`
`205`	`214`	`void Uart::flush()`
`206`	`215`	`{`
`207`	`216`	`}`