diff --git a/drivers/lhal/include/bflb_timer.h b/drivers/lhal/include/bflb_timer.h
index adcf7c8e..d52335d2 100644
--- a/drivers/lhal/include/bflb_timer.h
+++ b/drivers/lhal/include/bflb_timer.h
@@ -19,6 +19,7 @@
 #define TIMER_COMP_ID_0 0
 #define TIMER_COMP_ID_1 1
 #define TIMER_COMP_ID_2 2
+#define TIMER_COMP_NONE 3
 /**
   * @}
   */
diff --git a/drivers/lhal/include/bflb_wdg.h b/drivers/lhal/include/bflb_wdg.h
index b58d70d7..22301308 100644
--- a/drivers/lhal/include/bflb_wdg.h
+++ b/drivers/lhal/include/bflb_wdg.h
@@ -4,17 +4,28 @@
 #include "bflb_core.h"
 #include "bflb_clock.h"
 
+/** @defgroup WDG_MODE Watch-dog reset/interrupt mode definition
+  * @{
+  */
+#define WDG_MODE_INTERRUPT 0
+#define WDG_MODE_RESET     1
+/**
+  * @}
+  */
+
 /**
  * @brief WDG configuration structure
  *
  * @param clock_source      Wdg clock source, use BFLB_SYSTEM_* definition
  * @param clock_div         Wdg clock divison value, from 0 to 255
- * @param comp_val         Wdg compare value
+ * @param comp_val          Wdg compare value
+ * @param mode              Wdg reset/interrupt mode
  */
 struct bflb_wdg_config_s {
     uint8_t clock_source;
     uint8_t clock_div;
     uint16_t comp_val;
+    uint8_t mode;
 };
 
 #ifdef __cplusplus
diff --git a/drivers/lhal/src/bflb_timer.c b/drivers/lhal/src/bflb_timer.c
index 0652db8a..15c3f7ce 100644
--- a/drivers/lhal/src/bflb_timer.c
+++ b/drivers/lhal/src/bflb_timer.c
@@ -9,6 +9,11 @@ void bflb_timer_init(struct bflb_device_s *dev, const struct bflb_timer_config_s
 
     reg_base = dev->reg_base;
 
+    /* Disable timer */
+    regval = getreg32(reg_base + TIMER_TCER_OFFSET);
+    regval &= ~(1 << (dev->idx + 1));
+    putreg32(regval, reg_base + TIMER_TCER_OFFSET);
+
     /* Configure clock source */
     if (config->clock_source == BFLB_SYSTEM_CPU_CLK) {
         clk_source = 0;
@@ -16,7 +21,7 @@ void bflb_timer_init(struct bflb_device_s *dev, const struct bflb_timer_config_s
         clk_source = 3;
     } else if (config->clock_source == BFLB_SYSTEM_32K_CLK) {
         clk_source = 1;
-    } else if (config->clock_source == BFLB_SYSTEM_1K_CLK){
+    } else if (config->clock_source == BFLB_SYSTEM_1K_CLK) {
         clk_source = 2;
     }
 
@@ -48,7 +53,9 @@ void bflb_timer_init(struct bflb_device_s *dev, const struct bflb_timer_config_s
     /* Configure preload trigger source */
     regval = getreg32(reg_base + TIMER_TPLCR0_OFFSET + 4 * dev->idx);
     regval &= ~TIMER_TPLCR0_MASK;
-    regval |= ((config->trigger_comp_id + 1) << TIMER_TPLCR0_SHIFT);
+    if (config->trigger_comp_id != TIMER_COMP_NONE) {
+        regval |= ((config->trigger_comp_id + 1) << TIMER_TPLCR0_SHIFT);
+    }
     putreg32(regval, reg_base + TIMER_TPLCR0_OFFSET + 4 * dev->idx);
 
     if (config->counter_mode == TIMER_COUNTER_MODE_PROLOAD) {
@@ -164,9 +171,9 @@ bool bflb_timer_get_compint_status(struct bflb_device_s *dev, uint8_t cmp_no)
 
     if (regval & (1 << cmp_no)) {
         return true;
+    } else {
+        return false;
     }
-
-    return false;
 }
 
 void bflb_timer_compint_clear(struct bflb_device_s *dev, uint8_t cmp_no)
diff --git a/drivers/lhal/src/bflb_wdg.c b/drivers/lhal/src/bflb_wdg.c
index 7802d89b..9c887ec8 100644
--- a/drivers/lhal/src/bflb_wdg.c
+++ b/drivers/lhal/src/bflb_wdg.c
@@ -15,7 +15,11 @@ void bflb_wdg_init(struct bflb_device_s *dev, const struct bflb_wdg_config_s *co
 
     regval = getreg32(reg_base + TIMER_WMER_OFFSET);
     regval &= ~TIMER_WE;
-    regval &= ~TIMER_WRIE;
+    if (config->mode == WDG_MODE_INTERRUPT) {
+        regval &= ~TIMER_WRIE;
+    } else {
+        regval |= TIMER_WRIE;
+    }
     putreg32(regval, reg_base + TIMER_WMER_OFFSET);
 
     /* Configure clock source */
@@ -72,7 +76,6 @@ void bflb_wdg_stop(struct bflb_device_s *dev)
 
     regval = getreg32(reg_base + TIMER_WMER_OFFSET);
     regval &= ~TIMER_WE;
-    regval &= ~TIMER_WRIE;
     putreg32(regval, reg_base + TIMER_WMER_OFFSET);
 }
 
diff --git a/examples/peripherals/wdg/main.c b/examples/peripherals/wdg/main.c
deleted file mode 100644
index 6782fcde..00000000
--- a/examples/peripherals/wdg/main.c
+++ /dev/null
@@ -1,55 +0,0 @@
-#include "bflb_mtimer.h"
-#include "bflb_wdg.h"
-#include "board.h"
-
-struct bflb_device_s *wdt;
-static volatile uint8_t wdt_int_arrived = 0;
-
-void wdt_isr(int irq, void *arg)
-{
-    wdt_int_arrived = 1;
-    bflb_wdg_compint_clear(wdt);
-}
-
-int main(void)
-{
-    board_init();
-    printf("Timer watchdog interrupt test\r\n");
-
-    struct bflb_wdg_config_s wdt_cfg;
-    wdt_cfg.clock_source = BFLB_SYSTEM_32K_CLK;
-    wdt_cfg.clock_div = 0;
-    wdt_cfg.comp_val = 64000;
-
-    wdt = bflb_device_get_by_name("watchdog");
-    bflb_wdg_init(wdt, &wdt_cfg);
-    bflb_irq_attach(wdt->irq_num, wdt_isr, wdt);
-    bflb_irq_enable(wdt->irq_num);
-
-    wdt_int_arrived = 0;
-    bflb_wdg_start(wdt);
-
-    /* delay 1s and wdt interrupt should not trigger. */
-    bflb_mtimer_delay_ms(1000);
-    bflb_wdg_reset_countervalue(wdt);
-    if (wdt_int_arrived) {
-        printf("Error! Delay 1s, WDT interrupt should not arrive\r\n");
-        bflb_wdg_stop(wdt);
-    }
-
-    /* delay 2s will trigger WDT interrupt */
-    bflb_mtimer_delay_ms(2000);
-    bflb_wdg_reset_countervalue(wdt);
-    if (wdt_int_arrived) {
-        printf("Delay 2s, WDT interrupt arrived\r\n");
-    } else {
-        printf("Error! Delay 2s, WDT interrupt should arrive\r\n");
-        printf("get wdt cnt = %d\r\n", bflb_wdg_get_countervalue(wdt));
-    }
-
-    bflb_wdg_stop(wdt);
-
-    while (1) {
-        bflb_mtimer_delay_ms(1500);
-    }
-}
diff --git a/examples/peripherals/wdg/CMakeLists.txt b/examples/peripherals/wdg/wdg_int/CMakeLists.txt
similarity index 89%
rename from examples/peripherals/wdg/CMakeLists.txt
rename to examples/peripherals/wdg/wdg_int/CMakeLists.txt
index 5fb0a505..2bcf86e4 100644
--- a/examples/peripherals/wdg/CMakeLists.txt
+++ b/examples/peripherals/wdg/wdg_int/CMakeLists.txt
@@ -6,4 +6,4 @@ find_package(bouffalo_sdk REQUIRED HINTS $ENV{BL_SDK_BASE})
 
 sdk_set_main_file(main.c)
 
-project(wdg)
+project(wdg_int)
diff --git a/examples/peripherals/wdg/Makefile b/examples/peripherals/wdg/wdg_int/Makefile
similarity index 82%
rename from examples/peripherals/wdg/Makefile
rename to examples/peripherals/wdg/wdg_int/Makefile
index 9b01b7fe..44367c02 100644
--- a/examples/peripherals/wdg/Makefile
+++ b/examples/peripherals/wdg/wdg_int/Makefile
@@ -1,5 +1,5 @@
 SDK_DEMO_PATH ?= .
-BL_SDK_BASE ?= $(SDK_DEMO_PATH)/../../..
+BL_SDK_BASE ?= $(SDK_DEMO_PATH)/../../../..
 
 export BL_SDK_BASE
 
diff --git a/examples/peripherals/wdg/wdg_int/main.c b/examples/peripherals/wdg/wdg_int/main.c
new file mode 100644
index 00000000..16f57926
--- /dev/null
+++ b/examples/peripherals/wdg/wdg_int/main.c
@@ -0,0 +1,57 @@
+#include "bflb_mtimer.h"
+#include "bflb_wdg.h"
+#include "board.h"
+
+struct bflb_device_s *wdg;
+static volatile uint8_t wdg_int_arrived = 0;
+
+void wdg_isr(int irq, void *arg)
+{
+    wdg_int_arrived = 1;
+    bflb_wdg_compint_clear(wdg);
+}
+
+int main(void)
+{
+    board_init();
+    printf("Watchdog interrupt test\r\n");
+
+    struct bflb_wdg_config_s wdg_cfg;
+    wdg_cfg.clock_source = BFLB_SYSTEM_32K_CLK;
+    wdg_cfg.clock_div = 0;
+    wdg_cfg.comp_val = 64000;
+    wdg_cfg.mode = WDG_MODE_INTERRUPT;
+
+    wdg = bflb_device_get_by_name("watchdog");
+    bflb_wdg_init(wdg, &wdg_cfg);
+    bflb_irq_attach(wdg->irq_num, wdg_isr, wdg);
+    bflb_irq_enable(wdg->irq_num);
+
+    wdg_int_arrived = 0;
+    bflb_wdg_start(wdg);
+
+    /* delay 1s and wdg interrupt should not trigger. */
+    bflb_mtimer_delay_ms(1000);
+    bflb_wdg_reset_countervalue(wdg);
+    if (wdg_int_arrived) {
+        printf("Error! Delay 1s, wdg interrupt should not arrive\r\n");
+        bflb_wdg_stop(wdg);
+    } else {
+        printf("Delay 1s, wdg interrupt not arrive, pass\r\n");
+    }
+
+    /* delay 2s will trigger wdg interrupt */
+    bflb_mtimer_delay_ms(2000);
+    bflb_wdg_reset_countervalue(wdg);
+    if (wdg_int_arrived) {
+        printf("Delay 2s, wdg interrupt arrived, pass\r\n");
+    } else {
+        printf("Error! Delay 2s, wdg interrupt not arrived, count = %d\r\n",
+               bflb_wdg_get_countervalue(wdg));
+    }
+    bflb_wdg_stop(wdg);
+
+    while (1) {
+        bflb_mtimer_delay_ms(1500);
+    }
+}
diff --git a/examples/peripherals/wdg/proj.conf b/examples/peripherals/wdg/wdg_int/proj.conf
similarity index 100%
rename from examples/peripherals/wdg/proj.conf
rename to examples/peripherals/wdg/wdg_int/proj.conf
diff --git a/examples/peripherals/wdg/wdg_reset/CMakeLists.txt b/examples/peripherals/wdg/wdg_reset/CMakeLists.txt
new file mode 100644
index 00000000..a8c63072
--- /dev/null
+++ b/examples/peripherals/wdg/wdg_reset/CMakeLists.txt
@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 3.15)
+
+include(proj.conf)
+
+find_package(bouffalo_sdk REQUIRED HINTS $ENV{BL_SDK_BASE})
+
+sdk_set_main_file(main.c)
+
+project(wdg_reset)
diff --git a/examples/peripherals/wdg/wdg_reset/Makefile b/examples/peripherals/wdg/wdg_reset/Makefile
new file mode 100644
index 00000000..44367c02
--- /dev/null
+++ b/examples/peripherals/wdg/wdg_reset/Makefile
@@ -0,0 +1,13 @@
+SDK_DEMO_PATH ?= .
+BL_SDK_BASE ?= $(SDK_DEMO_PATH)/../../../..
+
+export BL_SDK_BASE
+
+CHIP ?= bl616
+BOARD ?= bl616dk
+CROSS_COMPILE ?= riscv64-unknown-elf-
+
+# add custom cmake definition
+#cmake_definition+=-Dxxx=sss
+
+include $(BL_SDK_BASE)/project.build
diff --git a/examples/peripherals/wdg/wdg_reset/main.c b/examples/peripherals/wdg/wdg_reset/main.c
new file mode 100644
index 00000000..d43d3732
--- /dev/null
+++ b/examples/peripherals/wdg/wdg_reset/main.c
@@ -0,0 +1,50 @@
+#include "bflb_mtimer.h"
+#include "bflb_wdg.h"
+#include "board.h"
+
+struct bflb_device_s *wdg;
+static volatile uint8_t wdg_int_arrived = 0;
+
+int main(void)
+{
+    board_init();
+    printf("Watchdog interrupt test\r\n");
+
+    struct bflb_wdg_config_s wdg_cfg;
+    wdg_cfg.clock_source = BFLB_SYSTEM_32K_CLK;
+    wdg_cfg.clock_div = 0;
+    wdg_cfg.comp_val = 64000;
+    wdg_cfg.mode = WDG_MODE_RESET;
+
+    wdg = bflb_device_get_by_name("watchdog");
+    bflb_wdg_init(wdg, &wdg_cfg);
+
+    wdg_int_arrived = 0;
+    bflb_wdg_start(wdg);
+
+    /* delay 1s and wdg interrupt should not trigger. */
+    bflb_mtimer_delay_ms(1000);
+    bflb_wdg_reset_countervalue(wdg);
+    if (wdg_int_arrived) {
+        printf("Error! Delay 1s, wdg not reset.\r\n");
+        bflb_wdg_stop(wdg);
+    } else {
+        printf("Delay 1s, wdg interrupt not arrive, pass\r\n");
+    }
+
+    printf("Next delay 2s, wdg will reset it.");
+    /* delay 2s will trigger wdg interrupt */
+    bflb_mtimer_delay_ms(2000);
+    bflb_wdg_reset_countervalue(wdg);
+    if (wdg_int_arrived) {
+        printf("Delay 2s, wdg reset, pass\r\n");
+    } else {
+        printf("Error! Delay 2s, wdg not reset, count = %d\r\n",
+               bflb_wdg_get_countervalue(wdg));
+    }
+    bflb_wdg_stop(wdg);
+
+    while (1) {
+        bflb_mtimer_delay_ms(1500);
+    }
+}
diff --git a/examples/peripherals/wdg/wdg_reset/proj.conf b/examples/peripherals/wdg/wdg_reset/proj.conf
new file mode 100644
index 00000000..13320d67
--- /dev/null
+++ b/examples/peripherals/wdg/wdg_reset/proj.conf
@@ -0,0 +1 @@
+#set(CONFIG_XXX 1)
\ No newline at end of file