From ddc9e486f28095c5b5769dc5a5e352afdb36cd4b Mon Sep 17 00:00:00 2001
From: LiHuashen <854410664@qq.com>
Date: Fri, 23 Nov 2018 16:46:49 +0800
Subject: [PATCH] Update m5core_gray.md

---
 docs/en/product_documents/m5stack-core/m5core_gray.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/docs/en/product_documents/m5stack-core/m5core_gray.md b/docs/en/product_documents/m5stack-core/m5core_gray.md
index 58aca779..2119ee71 100644
--- a/docs/en/product_documents/m5stack-core/m5core_gray.md
+++ b/docs/en/product_documents/m5stack-core/m5core_gray.md
@@ -51,6 +51,8 @@ The a Bottom board on the back of M5Core. It's designed for expanding gpio on M-
 
 **MEMS Sensor**
 
+<mark>*IIC Address of MPU9250 is 0x68*</mark>
+
 | MPU9250       | ESP32 Chip      |
 | :----------:  |:------------: |
 | SCL        | GPIO22         |