@hathach Arduino core now wants size_t returned

cores/arduino/Adafruit_TinyUSB_Core/Adafruit_USBD_CDC.cpp

@@ -126,7 +126,7 @@ size_t Adafruit_USBD_CDC::write(const uint8_t *buffer, size_t size)
   return size - remain;
 }
 
-int Adafruit_USBD_CDC::availableForWrite(void)
+size_t Adafruit_USBD_CDC::availableForWrite(void)
 {
   return tud_cdc_write_available();
 }

cores/arduino/Adafruit_TinyUSB_Core/Adafruit_USBD_CDC.h

@@ -51,7 +51,7 @@ public:
 	size_t write(const char *buffer, size_t size) {
 	  return write((const uint8_t *)buffer, size);
 	}
-	virtual int availableForWrite(void);
+	virtual size_t availableForWrite(void);
 	operator bool();
 };
 

cores/arduino/Print.h

@@ -58,7 +58,7 @@ class Print
 
     // default to zero, meaning "a single write may block"
     // should be overriden by subclasses with buffering
-    virtual int availableForWrite() { return 0; }
+    virtual size_t availableForWrite() { return 0; }
 
     size_t print(const __FlashStringHelper *);
     size_t print(const String &);

cores/arduino/USB/CDC.cpp

@@ -160,7 +160,7 @@ int Serial_::available(void)
 	return usb.available(CDC_ENDPOINT_OUT);
 }
 
-int Serial_::availableForWrite(void)
+size_t Serial_::availableForWrite(void)
 {
 	// return the number of bytes left in the current bank,
 	// always EP size - 1, because bank is flushed on every write

cores/arduino/USB/USBAPI.h

@@ -129,7 +129,7 @@ public:
 	void end(void);
 
 	virtual int available(void);
-	virtual int availableForWrite(void);
+	virtual size_t availableForWrite(void);
 	virtual int peek(void);
 	virtual int read(void);
 	virtual void flush(void);

cores/arduino/Uart.cpp

@@ -131,7 +131,7 @@ int Uart::available()
   return rxBuffer.available();
 }
 
-int Uart::availableForWrite()
+size_t Uart::availableForWrite()
 {
   return txBuffer.availableForStore();
 }

cores/arduino/Uart.h

@@ -33,7 +33,7 @@ class Uart : public HardwareSerial
     void begin(unsigned long baudrate, uint16_t config);
     void end();
     int available();
-    int availableForWrite();
+    size_t availableForWrite();
     int peek();
     int read();
     void flush();