diff --git a/bsp/stm32/libraries/HAL_Drivers/drv_flash/drv_flash_f1.c b/bsp/stm32/libraries/HAL_Drivers/drv_flash/drv_flash_f1.c
index 8f7d45ade7caed700b42e6b41f7800c39a95781c..01f706cd8fcc60600cac20163895fd2c37859a78 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drv_flash/drv_flash_f1.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drv_flash/drv_flash_f1.c
@@ -6,6 +6,8 @@
  * Change Logs:
  * Date           Author       Notes
  * 2018-12-5      SummerGift   first version
+ * 2020-03-05     redoc        support stm32f103vg
+ *
  */
 
 #include "board.h"
@@ -122,16 +124,17 @@ int stm32_flash_write(rt_uint32_t addr, const rt_uint8_t *buf, size_t size)
 }
 
 /**
- * Erase data on flash.
+ * Erase data on flash with bank.
  * @note This operation is irreversible.
  * @note This operation's units is different which on many chips.
  *
+ * @param bank flash bank
  * @param addr flash address
  * @param size erase bytes size
  *
  * @return result
  */
-int stm32_flash_erase(rt_uint32_t addr, size_t size)
+int stm32_flash_erase_bank(uint32_t bank, rt_uint32_t addr, size_t size)
 {
     rt_err_t result = RT_EOK;
     uint32_t PAGEError = 0;
@@ -151,7 +154,8 @@ int stm32_flash_erase(rt_uint32_t addr, size_t size)
     EraseInitStruct.TypeErase   = FLASH_TYPEERASE_PAGES;
     EraseInitStruct.PageAddress = GetPage(addr);
     EraseInitStruct.NbPages     = (size + FLASH_PAGE_SIZE - 1) / FLASH_PAGE_SIZE;
-
+    EraseInitStruct.Banks       = bank;
+    
     if (HAL_FLASHEx_Erase(&EraseInitStruct, &PAGEError) != HAL_OK)
     {
         result = -RT_ERROR;
@@ -170,6 +174,78 @@ __exit:
     return size;
 }
 
+/**
+ * Erase data on flash .
+ * @note This operation is irreversible.
+ * @note This operation's units is different which on many chips.
+ *
+ * @param addr flash address
+ * @param size erase bytes size
+ *
+ * @return result
+ */
+int stm32_flash_erase(rt_uint32_t addr, size_t size)
+{
+#if defined(FLASH_BANK2_END)    
+    rt_err_t result = RT_EOK;   
+    rt_uint32_t addr_bank1 = 0;
+    rt_uint32_t size_bank1 = 0;
+    rt_uint32_t addr_bank2 = 0;
+    rt_uint32_t size_bank2 = 0;
+
+    if((addr + size) <= FLASH_BANK1_END)
+    {
+        addr_bank1 = addr;
+        size_bank1 = size;
+        size_bank2 = 0;
+    }
+    else if(addr > FLASH_BANK1_END)
+    {
+        size_bank1 = 0;
+        addr_bank2 = addr;
+        size_bank2 = size; 
+    }
+    else
+    {
+        addr_bank1 = addr;
+        size_bank1 = FLASH_BANK1_END + 1 - addr_bank1;
+        addr_bank2 = FLASH_BANK1_END + 1;
+        size_bank2 = addr + size - (FLASH_BANK1_END + 1);
+    }
+
+    if(size_bank1)
+    {
+        LOG_D("bank1: addr (0x%p), size %d", (void *)addr_bank1, size_bank1);
+        if(size_bank1 != stm32_flash_erase_bank(FLASH_BANK_1, addr_bank1, size_bank1))
+        {
+            result = -RT_ERROR;
+            goto __exit;
+        }
+    }
+    
+    if(size_bank2)
+    {
+        LOG_D("bank2: addr (0x%p), size %d", (void *)addr_bank2, size_bank2);
+        if(size_bank2 != stm32_flash_erase_bank(FLASH_BANK_2, addr_bank2, size_bank2))
+        {
+            result = -RT_ERROR;
+            goto __exit;
+        }
+    }
+
+__exit:    
+    if(result != RT_EOK)
+    {
+        return result;
+    }
+    
+    return size_bank1 + size_bank2;
+#else
+    return stm32_flash_erase_bank(FLASH_BANK_1, addr, size);
+#endif
+}
+
+
 #if defined(PKG_USING_FAL)
 
 static int fal_flash_read(long offset, rt_uint8_t *buf, size_t size);