From 765c4b363d11339aea1572fa17ba77a92503b2ff Mon Sep 17 00:00:00 2001
From: Giampaolo Mancini <giampaolo@trampolineup.com>
Date: Thu, 15 Jul 2021 16:32:18 +0200
Subject: [PATCH] Add implementation for UART::flush

---
 cores/arduino/Serial.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cores/arduino/Serial.cpp b/cores/arduino/Serial.cpp
index 246eb3e96..87b84ce20 100644
--- a/cores/arduino/Serial.cpp
+++ b/cores/arduino/Serial.cpp
@@ -193,7 +193,7 @@ int UART::read() {
 }
 
 void UART::flush() {
-
+	while(!_serial->obj->writeable());
 }
 
 size_t UART::write(uint8_t c) {