esp32s2-saola-1: Initialize Watchdog Timers on bringup

Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>

boards/xtensa/esp32s2/common/include/esp32s2_board_wdt.h

@@ -0,0 +1,73 @@
+/****************************************************************************
+ * boards/xtensa/esp32s2/common/include/esp32s2_board_wdt.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_XTENSA_ESP32S2_COMMON_INCLUDE_ESP32S2_BOARD_WDT_H
+#define __BOARDS_XTENSA_ESP32S2_COMMON_INCLUDE_ESP32S2_BOARD_WDT_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifdef CONFIG_WATCHDOG
+
+/****************************************************************************
+ * Name: board_wdt_init
+ *
+ * Description:
+ *   Configure the watchdog timer driver.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+int board_wdt_init(void);
+
+#endif /* CONFIG_WATCHDOG */
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_XTENSA_ESP32S2_COMMON_INCLUDE_ESP32S2_BOARD_WDT_H */

boards/xtensa/esp32s2/common/src/Make.defs

@@ -18,6 +18,10 @@
 #
 #############################################################################
 
+ifeq ($(CONFIG_WATCHDOG),y)
+  CSRCS += esp32s2_board_wdt.c
+endif
+
 DEPPATH += --dep-path src
 VPATH += :src
 CFLAGS += $(shell $(INCDIR) "$(CC)" $(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)src)

boards/xtensa/esp32s2/common/src/esp32s2_board_wdt.c

@@ -0,0 +1,89 @@
+/****************************************************************************
+ * boards/xtensa/esp32s2/common/src/esp32s2_board_wdt.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <debug.h>
+
+#include "esp32s2_board_wdt.h"
+#include "esp32s2_wdt_lowerhalf.h"
+#include "esp32s2_wdt.h"
+
+#include "esp32s2-saola-1.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_wdt_init
+ *
+ * Description:
+ *   Configure the watchdog timer driver.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; A negated errno value is returned
+ *   to indicate the nature of any failure.
+ *
+ ****************************************************************************/
+
+int board_wdt_init(void)
+{
+  int ret = OK;
+
+#ifdef CONFIG_ESP32S2_MWDT0
+  ret = esp32s2_wdt_initialize("/dev/watchdog0", ESP32S2_WDT_MWDT0);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize MWDT0: %d\n", ret);
+      return ret;
+    }
+#endif /* CONFIG_ESP32S2_MWDT0 */
+
+#ifdef CONFIG_ESP32S2_MWDT1
+  ret = esp32s2_wdt_initialize("/dev/watchdog1", ESP32S2_WDT_MWDT1);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize MWDT1: %d\n", ret);
+      return ret;
+    }
+#endif /* CONFIG_ESP32S2_MWDT1 */
+
+#ifdef CONFIG_ESP32S2_RWDT
+  ret = esp32s2_wdt_initialize("/dev/watchdog2", ESP32S2_WDT_RWDT);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize RWDT: %d\n", ret);
+      return ret;
+    }
+#endif /* CONFIG_ESP32S2_RWDT */
+
+  return ret;
+}
+

boards/xtensa/esp32s2/esp32s2-saola-1/configs/watchdog/defconfig

@@ -0,0 +1,51 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_ARCH_LEDS is not set
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+# CONFIG_NSH_CMDPARMS is not set
+CONFIG_ARCH="xtensa"
+CONFIG_ARCH_BOARD="esp32s2-saola-1"
+CONFIG_ARCH_BOARD_ESP32S2_SAOLA_1=y
+CONFIG_ARCH_CHIP="esp32s2"
+CONFIG_ARCH_CHIP_ESP32S2=y
+CONFIG_ARCH_CHIP_ESP32S2WROVER=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARCH_XTENSA=y
+CONFIG_BOARD_LOOPSPERMSEC=16717
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_FULLOPT=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_ESP32S2_DATA_CACHE_0KB=y
+CONFIG_ESP32S2_MWDT0=y
+CONFIG_ESP32S2_MWDT1=y
+CONFIG_ESP32S2_UART0=y
+CONFIG_EXAMPLES_WATCHDOG=y
+CONFIG_FS_PROCFS=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_IDLETHREAD_STACKSIZE=3072
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_READLINE=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_RAM_SIZE=114688
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_START_DAY=6
+CONFIG_START_MONTH=12
+CONFIG_START_YEAR=2011
+CONFIG_SYSTEM_NSH=y
+CONFIG_UART0_SERIAL_CONSOLE=y
+CONFIG_WATCHDOG=y

boards/xtensa/esp32s2/esp32s2-saola-1/src/esp32s2_bringup.c

@@ -54,6 +54,10 @@
 #  include "esp32s2_rt_timer.h"
 #endif
 
+#ifdef CONFIG_WATCHDOG
+#  include "esp32s2_board_wdt.h"
+#endif
+
 #include "esp32s2-saola-1.h"
 
 /****************************************************************************
@@ -99,6 +103,16 @@ int esp32s2_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_WATCHDOG
+  /* Configure watchdog timer */
+
+  ret = board_wdt_init();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize watchdog timer: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_DEV_GPIO
   ret = esp32s2_gpio_init();
   if (ret < 0)