From c0cf01cbbf0f3d0df6e4e69290b63ef79ddc1d73 Mon Sep 17 00:00:00 2001
From: Carlos Pereira Atencio <carlosperate@embeddedlog.com>
Date: Mon, 2 Jan 2023 23:46:35 +0000
Subject: [PATCH] Wire: Fix return value for read() when there is no data
 available.

---
 libraries/Wire/Wire.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/Wire/Wire.cpp b/libraries/Wire/Wire.cpp
index 5091f44a2..cb12098f9 100644
--- a/libraries/Wire/Wire.cpp
+++ b/libraries/Wire/Wire.cpp
@@ -120,7 +120,7 @@ int arduino::MbedI2C::read() {
 	if (rxBuffer.available()) {
 		return rxBuffer.read_char();
 	}
-	return 0;
+	return -1;
 }
 
 int arduino::MbedI2C::available() {