Add STM32 watchdog configuration

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4617 7fd9a85b-ad96-42d3-883c-3090e2eb8679

9 files changed, 145 insertions, 2 deletions

diff --git a/nuttx/configs/stm3220g-eval/README.txt b/nuttx/configs/stm3220g-eval/README.txt
index 794d03241b..327280050b 100644
--- a/nuttx/configs/stm3220g-eval/README.txt
+++ b/nuttx/configs/stm3220g-eval/README.txt
@@ -460,6 +460,7 @@ STM3220G-EVAL-specific Configuration Options
 	CONFIG_STM32_TIM13
 	CONFIG_STM32_TIM14
 	CONFIG_STM32_WWDG
+	CONFIG_STM32_IWDG
 	CONFIG_STM32_SPI2
 	CONFIG_STM32_SPI3
 	CONFIG_STM32_USART2
diff --git a/nuttx/configs/stm3220g-eval/dhcpd/defconfig b/nuttx/configs/stm3220g-eval/dhcpd/defconfig
index 7306bbd7f0..db436c2364 100644
--- a/nuttx/configs/stm3220g-eval/dhcpd/defconfig
+++ b/nuttx/configs/stm3220g-eval/dhcpd/defconfig
@@ -172,6 +172,7 @@ CONFIG_STM32_TIM12=n
 CONFIG_STM32_TIM13=n
 CONFIG_STM32_TIM14=n
 CONFIG_STM32_WWDG=n
+CONFIG_STM32_IWDG=n
 CONFIG_STM32_SPI2=n
 CONFIG_STM32_SPI3=n
 CONFIG_STM32_USART2=n
diff --git a/nuttx/configs/stm3220g-eval/nettest/defconfig b/nuttx/configs/stm3220g-eval/nettest/defconfig
index 7f43244a3a..e54c502cc7 100644
--- a/nuttx/configs/stm3220g-eval/nettest/defconfig
+++ b/nuttx/configs/stm3220g-eval/nettest/defconfig
@@ -172,6 +172,7 @@ CONFIG_STM32_TIM12=n
 CONFIG_STM32_TIM13=n
 CONFIG_STM32_TIM14=n
 CONFIG_STM32_WWDG=n
+CONFIG_STM32_IWDG=n
 CONFIG_STM32_SPI2=n
 CONFIG_STM32_SPI3=n
 CONFIG_STM32_USART2=n
diff --git a/nuttx/configs/stm3220g-eval/nsh/defconfig b/nuttx/configs/stm3220g-eval/nsh/defconfig
index 5e63d03faf..5d793f3548 100644
--- a/nuttx/configs/stm3220g-eval/nsh/defconfig
+++ b/nuttx/configs/stm3220g-eval/nsh/defconfig
@@ -172,6 +172,7 @@ CONFIG_STM32_TIM12=n
 CONFIG_STM32_TIM13=n
 CONFIG_STM32_TIM14=n
 CONFIG_STM32_WWDG=n
+CONFIG_STM32_IWDG=n
 CONFIG_STM32_SPI2=n
 CONFIG_STM32_SPI3=n
 CONFIG_STM32_USART2=n
diff --git a/nuttx/configs/stm3220g-eval/nsh2/defconfig b/nuttx/configs/stm3220g-eval/nsh2/defconfig
index 62afbf9c2a..df5a0e8d10 100644
--- a/nuttx/configs/stm3220g-eval/nsh2/defconfig
+++ b/nuttx/configs/stm3220g-eval/nsh2/defconfig
@@ -173,6 +173,7 @@ CONFIG_STM32_TIM12=n
 CONFIG_STM32_TIM13=n
 CONFIG_STM32_TIM14=n
 CONFIG_STM32_WWDG=n
+CONFIG_STM32_IWDG=n
 CONFIG_STM32_SPI2=n
 CONFIG_STM32_SPI3=n
 CONFIG_STM32_USART2=n
diff --git a/nuttx/configs/stm3220g-eval/ostest/defconfig b/nuttx/configs/stm3220g-eval/ostest/defconfig
index 2ed18f0fce..9859b0f9c2 100644
--- a/nuttx/configs/stm3220g-eval/ostest/defconfig
+++ b/nuttx/configs/stm3220g-eval/ostest/defconfig
@@ -172,6 +172,7 @@ CONFIG_STM32_TIM12=n
 CONFIG_STM32_TIM13=n
 CONFIG_STM32_TIM14=n
 CONFIG_STM32_WWDG=n
+CONFIG_STM32_IWDG=n
 CONFIG_STM32_SPI2=n
 CONFIG_STM32_SPI3=n
 CONFIG_STM32_USART2=n
diff --git a/nuttx/configs/stm3220g-eval/src/Makefile b/nuttx/configs/stm3220g-eval/src/Makefile
index b79189cb1b..af845744bf 100644
--- a/nuttx/configs/stm3220g-eval/src/Makefile
+++ b/nuttx/configs/stm3220g-eval/src/Makefile
@@ -80,8 +80,8 @@ ifeq ($(CONFIG_NSH_ARCHINIT),y)
 CSRCS		+= up_nsh.c
 endif
 
-ifeq ($(CONFIG_ARCH_FPU),y)
-CSRCS		+= up_ostest.c
+ifeq ($(CONFIG_WATCHDOG),y)
+CSRCS		+= up_watchdog.c
 endif
 
 COBJS		= $(CSRCS:.c=$(OBJEXT))
diff --git a/nuttx/configs/stm3220g-eval/src/up_watchdog.c b/nuttx/configs/stm3220g-eval/src/up_watchdog.c
new file mode 100644
index 0000000000..d8b635982e
--- /dev/null
+++ b/nuttx/configs/stm3220g-eval/src/up_watchdog.c
@@ -0,0 +1,136 @@
+/************************************************************************************
+ * configs/stm3220g-eval/src/up_watchdog.c
+ * arch/arm/src/board/up_watchdog.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/watchdog.h>
+#include <arch/board/board.h>
+
+#include "stm32_wdg.h"
+
+#ifdef CONFIG_WATCHDOG
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+/* Configuration *******************************************************************/
+/* Wathdog hardware should be enabled */
+
+#if !defined(CONFIG_STM32_WWDG) && !defined(CONFIG_STM32_IWDG)
+#  warning "One of CONFIG_STM32_WWDG or CONFIG_STM32_IWDG must be defined"
+#endif
+
+/* Select the path to the registered watchdog timer device */
+
+#ifndef CONFIG_STM32_WDG_DEVPATH
+#  ifdef CONFIG_EXAMPLES_WATCHDOG_DEVPATH
+#    define CONFIG_STM32_WDG_DEVPATH CONFIG_EXAMPLES_WATCHDOG_DEVPATH
+#  else
+#    define CONFIG_STM32_WDG_DEVPATH "/dev/watchdog0"
+#  endif
+#endif
+
+/* Use the un-calibrated LSI frequency if we have nothing better */
+
+#if defined(CONFIG_STM32_IWDG) && !defined(CONFIG_STM32_LSIFREQ)
+#  define CONFIG_STM32_LSIFREQ STM32_LSI_FREQUENCY
+#endif
+
+/* Debug ***************************************************************************/
+/* Non-standard debug that may be enabled just for testing the watchdog timer */
+
+#ifndef CONFIG_DEBUG
+#  undef CONFIG_DEBUG_WATCHDOG
+#endif
+
+#ifdef CONFIG_DEBUG_WATCHDOG
+#  define wdgdbg                 dbg
+#  define wdglldbg               lldbg
+#  ifdef CONFIG_DEBUG_VERBOSE
+#    define wdgvdbg              vdbg
+#    define wdgllvdbg            llvdbg
+#  else
+#    define wdgvdbg(x...)
+#    define wdgllvdbg(x...)
+#  endif
+#else
+#  define wdgdbg(x...)
+#  define wdglldbg(x...)
+#  define wdgvdbg(x...)
+#  define wdgllvdbg(x...)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/****************************************************************************
+ * Name: up_wdginitialize()
+ *
+ * Description:
+ *   Perform architecuture-specific initialization of the Watchdog hardware.
+ *   This interface must be provided by all configurations using
+ *   apps/examples/watchdog
+ *
+ ****************************************************************************/
+
+int up_wdginitialize(void)
+{
+  /* Initialize tha register the watchdog timer device */
+
+#if defined(CONFIG_STM32_WWDG)
+  stm32_wwdginitialize(CONFIG_STM32_WDG_DEVPATH);
+  return OK;
+#elif defined(CONFIG_STM32_IWDG)
+  stm32_iwdginitialize(CONFIG_STM32_WDG_DEVPATH, CONFIG_STM32_LSIFREQ);
+  return OK;
+#else
+  return -ENODEV;
+#endif
+}
+
+#endif /* CONFIG_WATCHDOG */
diff --git a/nuttx/configs/stm3220g-eval/telnetd/defconfig b/nuttx/configs/stm3220g-eval/telnetd/defconfig
index 854e5631ad..12e036d9fe 100644
--- a/nuttx/configs/stm3220g-eval/telnetd/defconfig
+++ b/nuttx/configs/stm3220g-eval/telnetd/defconfig
@@ -171,6 +171,7 @@ CONFIG_STM32_TIM12=n
 CONFIG_STM32_TIM13=n
 CONFIG_STM32_TIM14=n
 CONFIG_STM32_WWDG=n
+CONFIG_STM32_IWDG=n
 CONFIG_STM32_SPI2=n
 CONFIG_STM32_SPI3=n
 CONFIG_STM32_USART2=n