diff --git a/bsp/stm32/libraries/HAL_Drivers/drv_hwtimer.c b/bsp/stm32/libraries/HAL_Drivers/drv_hwtimer.c
index 274f3dc44f9558f3c93bc706dd688e93b0483a21..51963e65e54acf08aa29a7dbcc4756406567b56f 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drv_hwtimer.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drv_hwtimer.c
@@ -8,9 +8,13 @@
  * 2018-12-10     zylx         first version
  * 2020-06-16     thread-liu   Porting for stm32mp1
  * 2020-08-25     linyongkang  Fix the timer clock frequency doubling problem
+ * 2020-11-18     leizhixiong  New STM32H7 series support for hwtimer
  */
 
 #include <board.h>
+#include<rtthread.h>
+#include<rtdevice.h>
+
 #ifdef BSP_USING_TIM
 #include "drv_config.h"
 
@@ -174,10 +178,10 @@ static void pclkx_doubler_get(rt_uint32_t *pclk1_doubler, rt_uint32_t *pclk2_dou
     }
     if (RCC_ClkInitStruct.APB2_Div != RCC_APB2_DIV1)
     {
-       *pclk2_doubler = 2; 
+       *pclk2_doubler = 2;
     }
 #else
-    if (RCC_ClkInitStruct.APB1CLKDivider != RCC_HCLK_DIV1)    
+    if (RCC_ClkInitStruct.APB1CLKDivider != RCC_HCLK_DIV1)
     {
          *pclk1_doubler = 2;
     }
@@ -212,7 +216,7 @@ static void timer_init(struct rt_hwtimer_device *timer, rt_uint32_t state)
         if (tim->Instance == TIM15 || tim->Instance == TIM16 || tim->Instance == TIM17)
 #elif defined(SOC_SERIES_STM32MP1)
        if(tim->Instance == TIM14 || tim->Instance == TIM16 || tim->Instance == TIM17)
-#elif defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32G0)
+#elif defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32G0)
         if (0)
 #endif
         {
@@ -285,7 +289,7 @@ static rt_err_t timer_start(rt_hwtimer_t *timer, rt_uint32_t t, rt_hwtimer_mode_
     {
         tim->Instance->CR1 &= (~TIM_OPMODE_SINGLE);
     }
-	
+
     /* start timer */
     if (HAL_TIM_Base_Start_IT(tim) != HAL_OK)
     {
@@ -339,13 +343,17 @@ static rt_err_t timer_ctrl(rt_hwtimer_t *timer, rt_uint32_t cmd, void *arg)
 #elif defined(SOC_SERIES_STM32L4)
         if (tim->Instance == TIM15 || tim->Instance == TIM16 || tim->Instance == TIM17)
 #elif defined(SOC_SERIES_STM32MP1)
-       if(tim->Instance == TIM14 || tim->Instance == TIM16 || tim->Instance == TIM17)  
-#elif defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32G0)
+       if(tim->Instance == TIM14 || tim->Instance == TIM16 || tim->Instance == TIM17)
+#elif defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32H7) || defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32G0)
         if (0)
 #endif
         {
 #if !defined(SOC_SERIES_STM32F0) && !defined(SOC_SERIES_STM32G0)
             val = HAL_RCC_GetPCLK2Freq() * pclk2_doubler / freq;
+#elif defined(SOC_SERIES_STM32L4)
+            val = HAL_RCC_GetPCLK2Freq() / freq;
+#elif defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32F2) || defined(SOC_SERIES_STM32F4)|| defined(SOC_SERIES_STM32F7)
+            val = HAL_RCC_GetPCLK2Freq() * 2 / freq;
 #endif
         }
         else
@@ -453,7 +461,7 @@ void TIM8_UP_TIM13_IRQHandler(void)
 #ifdef BSP_USING_TIM14
 #if defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7)
     void TIM8_TRG_COM_TIM14_IRQHandler(void)
-#elif defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32MP1) 
+#elif defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32MP1)
     void TIM14_IRQHandler(void)
 #endif
 {
@@ -477,7 +485,7 @@ void TIM1_BRK_TIM15_IRQHandler(void)
 #ifdef BSP_USING_TIM16
 #if defined(SOC_SERIES_STM32L4)
     void TIM1_UP_TIM16_IRQHandler(void)
-#elif defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32MP1) 
+#elif defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32MP1)
     void TIM16_IRQHandler(void)
 #endif
 {
@@ -491,7 +499,7 @@ void TIM1_BRK_TIM15_IRQHandler(void)
 #ifdef BSP_USING_TIM17
 #if defined(SOC_SERIES_STM32L4)
     void TIM1_TRG_COM_TIM17_IRQHandler(void)
-#elif defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32MP1) 
+#elif defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32MP1)
     void TIM17_IRQHandler(void)
 #endif
 {