Return -1 if there are no bytes to read

copercini · web-flow · commit bd0227a1601d · 2018-03-12T23:18:09.000-03:00
diff --git a/libraries/BluetoothSerial/src/BluetoothSerial.cpp b/libraries/BluetoothSerial/src/BluetoothSerial.cpp
@@ -201,15 +201,15 @@ int BluetoothSerial::read(void)
 {
     if (available()){
         if (!client || SerialQueueBT == NULL){
-            return 0;
+            return -1;
         }
 
         uint8_t c;
         if (xQueueReceive(SerialQueueBT, &c, 0)){
             return c;
         }
-        return 0;
     }
+    return -1;
 }
 
 size_t BluetoothSerial::write(uint8_t c)

Original file line number	Diff line number	Diff line change
`@@ -201,15 +201,15 @@ int BluetoothSerial::read(void)`
`201`	`201`	`{`
`202`	`202`	`if (available()){`
`203`	`203`	`if (!client \|\| SerialQueueBT == NULL){`
`204`		`- return 0;`
	`204`	`+ return -1;`
`205`	`205`	`}`
`206`	`206`
`207`	`207`	`uint8_t c;`
`208`	`208`	`if (xQueueReceive(SerialQueueBT, &c, 0)){`
`209`	`209`	`return c;`
`210`	`210`	`}`
`211`		`- return 0;`
`212`	`211`	`}`
	`212`	`+ return -1;`
`213`	`213`	`}`
`214`	`214`
`215`	`215`	`size_t BluetoothSerial::write(uint8_t c)`