From eb25358aac3442e05d5ee97056ec963e05edc7a2 Mon Sep 17 00:00:00 2001
From: David Sidrane <david_s5@nscdg.com>
Date: Fri, 20 Jan 2017 07:14:48 -1000
Subject: [PATCH] auav-x21 Add PX4IO HW version

---
 src/drivers/boards/auav-x21/board_config.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/drivers/boards/auav-x21/board_config.h b/src/drivers/boards/auav-x21/board_config.h
index ccb5811c85..b10fd7ff8d 100644
--- a/src/drivers/boards/auav-x21/board_config.h
+++ b/src/drivers/boards/auav-x21/board_config.h
@@ -53,6 +53,7 @@
 /* Configuration ************************************************************************************/
 
 /* PX4IO connection configuration */
+#define BOARD_USES_PX4IO_VERSION       2
 #define PX4IO_SERIAL_DEVICE	"/dev/ttyS4"
 #define PX4IO_SERIAL_TX_GPIO	GPIO_USART6_TX
 #define PX4IO_SERIAL_RX_GPIO	GPIO_USART6_RX