From d2420b667c0074dc2183bd0c572cafaea42e6410 Mon Sep 17 00:00:00 2001
From: Wangjialin <wangjialin@espressif.com>
Date: Thu, 22 Sep 2016 09:05:39 +0800
Subject: [PATCH] use uint8_t for fifo struct in uart and i2c

---
 components/esp32/include/soc/i2c_struct.h  | 4 ++--
 components/esp32/include/soc/uart_struct.h | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/components/esp32/include/soc/i2c_struct.h b/components/esp32/include/soc/i2c_struct.h
index d6917e7fdc..8111b2cba0 100644
--- a/components/esp32/include/soc/i2c_struct.h
+++ b/components/esp32/include/soc/i2c_struct.h
@@ -97,8 +97,8 @@ typedef volatile struct {
     }fifo_conf;
     union {
         struct {
-            uint32_t data:       8;                 /*The register represent the byte  data read from rx_fifo when use apb fifo access*/
-            uint32_t reserved8: 24;
+            uint8_t data;                           /*The register represent the byte  data read from rx_fifo when use apb fifo access*/
+            uint8_t reserved[3];
         };
         uint32_t val;
     }fifo_data;
diff --git a/components/esp32/include/soc/uart_struct.h b/components/esp32/include/soc/uart_struct.h
index 54baf4f0e5..78331e7035 100644
--- a/components/esp32/include/soc/uart_struct.h
+++ b/components/esp32/include/soc/uart_struct.h
@@ -16,8 +16,8 @@
 typedef volatile struct {
     union {
         struct {
-            uint32_t rw_byte:    8;                 /*This register stores one byte data  read by rx fifo.*/
-            uint32_t reserved8: 24;
+            uint8_t rw_byte;                 /*This register stores one byte data  read by rx fifo.*/
+            uint8_t reserved[3];
         };
         uint32_t val;
     }fifo;