Fix flush

mishafarms · web-flow · commit ab96650b6a63 · 2019-12-17T08:59:30.000-08:00
flush should not flush the read buffer, it should wait till all output is drained from the write buffer.
diff --git a/libraries/BluetoothSerial/src/BluetoothSerial.cpp b/libraries/BluetoothSerial/src/BluetoothSerial.cpp
@@ -652,7 +652,11 @@ size_t BluetoothSerial::write(const uint8_t *buffer, size_t size)
 
 void BluetoothSerial::flush()
 {
-    while(read() >= 0){}
+    if (_spp_tx_queue != NULL){
+        while(uxQueueMessagesWaiting(_spp_tx_queue) > 0){
+	    delay(50);
+        }
+    }
 }
 
 void BluetoothSerial::end()

Original file line number	Diff line number	Diff line change
`@@ -652,7 +652,11 @@ size_t BluetoothSerial::write(const uint8_t *buffer, size_t size)`
`652`	`652`
`653`	`653`	`void BluetoothSerial::flush()`
`654`	`654`	`{`
`655`		`- while(read() >= 0){}`
	`655`	`+ if (_spp_tx_queue != NULL){`
	`656`	`+ while(uxQueueMessagesWaiting(_spp_tx_queue) > 0){`
	`657`	`+ delay(50);`
	`658`	`+ }`
	`659`	`+ }`
`656`	`660`	`}`
`657`	`661`
`658`	`662`	`void BluetoothSerial::end()`