From 4f33dd14d4e969b1250ec72b46fd222339fcb3a5 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Wed, 18 May 2016 19:21:51 -0600
Subject: [PATCH] apps/examples/watchdog:  Remove call to up_wdginitialize(). 
 This must be done in board-specific initialization.  The call fram
 application space is not permitted.

---
 examples/watchdog/Kconfig         | 15 +++++++++++++++
 examples/watchdog/watchdog_main.c | 29 +----------------------------
 2 files changed, 16 insertions(+), 28 deletions(-)

diff --git a/examples/watchdog/Kconfig b/examples/watchdog/Kconfig
index 6e9e5c55f..42121531d 100644
--- a/examples/watchdog/Kconfig
+++ b/examples/watchdog/Kconfig
@@ -9,6 +9,21 @@ config EXAMPLES_WATCHDOG
 	---help---
 		Enable the watchdog timer example
 
+		In order to use this example, board specific logic must register the
+		watchdog timer driver.  That would be in the board bring-up logic
+		in the configs/<board>/src directory for the board.
+
+		The way that this is done depends on the underlying MCU architecture.
+		For STM32, this would be done like:
+
+			#include "stm32_wdg.h"
+
+			#if defined(CONFIG_STM32_WWDG)
+			  stm32_wwdginitialize(CONFIG_STM32_WDG_DEVPATH);
+			#elif defined(CONFIG_STM32_IWDG)
+			  stm32_iwdginitialize(CONFIG_STM32_WDG_DEVPATH, CONFIG_STM32_LSIFREQ);
+			#endif
+
 if EXAMPLES_WATCHDOG
 
 config EXAMPLES_WATCHDOG_DEVPATH
diff --git a/examples/watchdog/watchdog_main.c b/examples/watchdog/watchdog_main.c
index aeff559dd..edce88b4e 100644
--- a/examples/watchdog/watchdog_main.c
+++ b/examples/watchdog/watchdog_main.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * examples/watchdog/watchdog_main.c
  *
- *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2012, 2016 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -53,10 +53,6 @@
 
 #include "watchdog.h"
 
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
 /****************************************************************************
  * Private Types
  ****************************************************************************/
@@ -68,18 +64,6 @@ struct wdog_example_s
   uint32_t timeout;
 };
 
-/****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/****************************************************************************
- * Public Data
- ****************************************************************************/
-
 /****************************************************************************
  * Private Functions
  ****************************************************************************/
@@ -238,17 +222,6 @@ int wdog_main(int argc, char *argv[])
 
   parse_args(&wdog, argc, argv);
 
-  /* Initialization of the WATCHDOG hardware is performed by logic external to
-   * this test.
-   */
-
-  ret = up_wdginitialize();
-  if (ret != OK)
-    {
-      printf("wdog_main: up_wdginitialize failed: %d\n", ret);
-      goto errout;
-    }
-
   /* Open the watchdog device for reading */
 
   fd = open(CONFIG_EXAMPLES_WATCHDOG_DEVPATH, O_RDONLY);