Change Wire.write() return types from void to size_t to be compatible with the Arduino API

STM32F1/libraries/Wire/utility/WireBase.cpp

@@ -95,27 +95,33 @@ uint8 WireBase::requestFrom(int address, int numBytes) {
     return WireBase::requestFrom((uint8)address, numBytes);
 }
 
-void WireBase::write(uint8 value) {
+size_t WireBase::write(uint8 value) {
     if (tx_buf_idx == BUFFER_LENGTH) {
         tx_buf_overflow = true;
-        return;
+        return 0;
     }
     tx_buf[tx_buf_idx++] = value;
     itc_msg.length++;
+	return 1;
 }
 
-void WireBase::write(uint8* buf, int len) {
+size_t WireBase::write(uint8* buf, int len) {
     for (uint8 i = 0; i < len; i++) {
-        write(buf[i]);
+        if (!write(buf[i]))
+		{
+			return i;
+		}
     }
+	return len;
 }
 
-void WireBase::write(int value) {
-    write((uint8)value);
+
+size_t WireBase::write(int value) {
+    return write((uint8)value);
 }
 
-void WireBase::write(int* buf, int len) {
-    write((uint8*)buf, (uint8)len);
+size_t WireBase::write(int* buf, int len) {
+    return write((uint8*)buf, (uint8)len);
 }
 
 void WireBase::write(char* buf) {

STM32F1/libraries/Wire/utility/WireBase.h

@@ -108,22 +108,22 @@ public:
     /*
      * Stack up bytes to be sent when transmitting
      */
-    void write(uint8);
+    size_t write(uint8);
 
     /*
      * Stack up bytes from the array to be sent when transmitting
      */
-    void write(uint8*, int);
+    size_t write(uint8*, int);
 
     /*
      * Ensure that a sending data will only be 8-bit bytes
      */
-    void write(int);
+    size_t write(int);
 
     /*
      * Ensure that an array sending data will only be 8-bit bytes
      */
-    void write(int*, int);
+    size_t write(int*, int);
 
     /*
      * Stack up bytes from a string to be sent when transmitting