From d512b49a6a744c00aa8db816ef0e46de5ddec514 Mon Sep 17 00:00:00 2001
From: songyanguang <345810377@qq.com>
Date: Mon, 11 Aug 2025 18:02:00 +0800
Subject: [PATCH] Add watchdog

---
 .../board/ch569w/third_party_driver/Kconfig   |  4 ++
 .../board/ch569w/third_party_driver/Makefile  |  4 ++
 .../spi/connect_spi_flash.c                   |  2 +-
 .../ch569w/third_party_driver/wdt/Makefile    |  3 +
 .../third_party_driver/wdt/connect_wdt.c      | 71 +++++++++++++++++++
 5 files changed, 83 insertions(+), 1 deletion(-)
 create mode 100644 Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/wdt/Makefile
 create mode 100644 Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/wdt/connect_wdt.c

diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Kconfig b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Kconfig
index 927598866..ccc8dac9c 100644
--- a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Kconfig
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Kconfig
@@ -12,3 +12,7 @@ menuconfig BSP_USING_SPI
     if BSP_USING_SPI
         source "$BSP_DIR/third_party_driver/spi/Kconfig"
     endif
+
+menuconfig BSP_USING_WDT
+    bool "Using watchdog timer device"
+    default y
diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Makefile b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Makefile
index 035498017..b4644627d 100644
--- a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Makefile
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Makefile
@@ -10,4 +10,8 @@ ifeq ($(CONFIG_BSP_USING_SPI),y)
   SRC_DIR += spi
 endif
 
+ifeq ($(CONFIG_BSP_USING_WDT),y)
+  SRC_DIR += wdt
+endif
+
 include $(KERNEL_ROOT)/compiler.mk
diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/spi/connect_spi_flash.c b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/spi/connect_spi_flash.c
index 7378911a2..e2babe5e1 100644
--- a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/spi/connect_spi_flash.c
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/spi/connect_spi_flash.c
@@ -461,4 +461,4 @@ int SpiFlashTest(int argc, char *argv[])
 }
 
 SHELL_EXPORT_CMD(SHELL_CMD_PERMISSION(0) | SHELL_CMD_TYPE(SHELL_TYPE_CMD_MAIN),
-                 test_spi, SpiFlashTest, test spi);
+                 SpiFlashTest, SpiFlashTest, test spi);
diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/wdt/Makefile b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/wdt/Makefile
new file mode 100644
index 000000000..9be59f003
--- /dev/null
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/wdt/Makefile
@@ -0,0 +1,3 @@
+SRC_FILES := connect_wdt.c
+
+include $(KERNEL_ROOT)/compiler.mk
diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/wdt/connect_wdt.c b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/wdt/connect_wdt.c
new file mode 100644
index 000000000..29d1056c5
--- /dev/null
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/wdt/connect_wdt.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2020 AIIT XUOS Lab
+ * XiUOS is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan
+ * PSL v2. You may obtain a copy of Mulan PSL v2 at:
+ *        http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY
+ * KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+ * NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE. See the
+ * Mulan PSL v2 for more details.
+ */
+
+/**
+ * @file connect_usart.c
+ * @brief support ch569 uart function and register to bus framework
+ * @version 1.0
+ * @author AIIT XUOS Lab
+ * @date 2025-04-07
+ */
+
+#include "CH56x_common.h"
+#include "xizi.h"
+#include "board.h"
+#include "shell.h"
+
+#define WDOG_MSECOND_MAX    ( (0xff << 19) / (FREQ_SYS / 1000) )  // watchdog timer is clocked at Fsys/524288, arround 3~228Hz
+int g_feed_wdt_stop = 0;
+
+int InitHwWdt(void)
+{
+    KPrintf("InitHwWdt WDOG_MSECOND_MAX is %d ms\n", WDOG_MSECOND_MAX);
+
+    WWDG_SetCounter(0);
+    WWDG_ClearFlag();
+    WWDG_ResetCfg(ENABLE);
+    while(1) {
+        WWDG_SetCounter(0);
+        //mDelaymS(100);
+        if (g_feed_wdt_stop == 1) {
+            KPrintf("%s watchdog feed stop!\n", __func__);
+            break;
+        }
+    }
+
+    return 0;
+}
+
+/**
+ * @description: Watchdog function
+ * @return success: EOK, failure: other
+ */
+int StartWatchdog(void)
+{
+    int ret = EOK;
+
+    int32 WdtTask = KTaskCreate("WdtTask", (void *)InitHwWdt, NONE, 1024, 19); 
+    StartupKTask(WdtTask);
+
+    return EOK;
+}
+
+int WdtTest(int argc, char *argv[])
+{
+    KPrintf("WdtTest Start\n");
+    g_feed_wdt_stop = 1;
+
+    return 0;
+}
+
+SHELL_EXPORT_CMD(SHELL_CMD_PERMISSION(0) | SHELL_CMD_TYPE(SHELL_TYPE_CMD_MAIN),
+                 WdtTest, WdtTest, test wdt);