From 80f39ff76cf4e0ab7beee9f93b81c90921c41b62 Mon Sep 17 00:00:00 2001
From: Alexandre Bourdiol <alexandre.bourdiol@st.com>
Date: Tue, 25 Feb 2020 14:49:16 +0100
Subject: [PATCH] Wire: rxBuffer should be initialized before using it

rxBuffer is used within resetRxBuffer();
Idem for txBuffer
---
 libraries/Wire/src/Wire.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libraries/Wire/src/Wire.cpp b/libraries/Wire/src/Wire.cpp
index a93367aa61..58b8d6913c 100644
--- a/libraries/Wire/src/Wire.cpp
+++ b/libraries/Wire/src/Wire.cpp
@@ -59,17 +59,17 @@ void TwoWire::begin(uint8_t address, bool generalCall)
 {
   rxBufferIndex = 0;
   rxBufferLength = 0;
+  rxBuffer = nullptr;
+  rxBufferAllocated = 0;
   resetRxBuffer();
 
   txBufferIndex = 0;
   txBufferLength = 0;
-  resetTxBuffer();
-
-  rxBuffer = nullptr;
-  rxBufferAllocated = 0;
   txAddress = 0;
   txBuffer = nullptr;
   txBufferAllocated = 0;
+  resetTxBuffer();
+
   _i2c.__this = (void *)this;
   user_onRequest = NULL;
   transmitting = 0;