USB: set return type of USBDevice::recv(ep) to int

cmaglie · cmaglie · commit 34bf5421f853 · 2016-08-24T01:04:58.000+02:00
this is the proper type to encapsulate a byte when data is available
or -1 when there is no data.
diff --git a/cores/arduino/USB/USBAPI.h b/cores/arduino/USB/USBAPI.h
@@ -88,7 +88,7 @@ class USBDeviceClass {
 	uint32_t send(uint32_t ep, const void *data, uint32_t len);
 	void sendZlp(uint32_t ep);
 	uint32_t recv(uint32_t ep, void *data, uint32_t len);
-	uint32_t recv(uint32_t ep);
+	int recv(uint32_t ep);
 	uint32_t available(uint32_t ep);
 	void flush(uint32_t ep);
 	void stall(uint32_t ep);
diff --git a/cores/arduino/USB/USBCore.cpp b/cores/arduino/USB/USBCore.cpp
@@ -572,7 +572,7 @@ uint32_t USBDeviceClass::recv(uint32_t ep, void *_data, uint32_t len)
 }
 
 // Recv 1 byte if ready
-uint32_t USBDeviceClass::recv(uint32_t ep)
+int USBDeviceClass::recv(uint32_t ep)
 {
 	uint8_t c;
 	if (recv(ep, &c, 1) != 1) {

Original file line number	Diff line number	Diff line change
`@@ -572,7 +572,7 @@ uint32_t USBDeviceClass::recv(uint32_t ep, void *_data, uint32_t len)`
`572`	`572`	`}`
`573`	`573`
`574`	`574`	`// Recv 1 byte if ready`
`575`		`-uint32_t USBDeviceClass::recv(uint32_t ep)`
	`575`	`+int USBDeviceClass::recv(uint32_t ep)`
`576`	`576`	`{`
`577`	`577`	`uint8_t c;`
`578`	`578`	`if (recv(ep, &c, 1) != 1) {`