diff --git a/bsp/stm32f4xx-HAL/drivers/drv_gpio.c b/bsp/stm32f4xx-HAL/drivers/drv_gpio.c
index eb4392ce6cf83136301410bd42dd687d48032c69..0218c05e03c492ebdb1d92ebc319c9407784fdf4 100644
--- a/bsp/stm32f4xx-HAL/drivers/drv_gpio.c
+++ b/bsp/stm32f4xx-HAL/drivers/drv_gpio.c
@@ -15,97 +15,142 @@
 #include <rtdevice.h>
 #include <board.h>
 #ifdef RT_USING_PIN
-#define __STM32_PIN(index, gpio, gpio_index) {index, GPIO##gpio##_CLK_ENABLE, GPIO##gpio, GPIO_PIN_##gpio_index}
-#define __STM32_PIN_DEFAULT {-1, 0, 0, 0}
+#define __STM32_PIN(index, gpio, gpio_index) (gpio | gpio_index)
+#define __STM32_PIN_DEFAULT 0
 
-static void GPIOA_CLK_ENABLE(void)
-{
-#ifdef __HAL_RCC_GPIOA_CLK_ENABLE
-    __HAL_RCC_GPIOA_CLK_ENABLE();
-#endif
-}
+#define A   (1U << 8)
+#define B   (2U << 8)
+#define C   (3U << 8)
+#define D   (4U << 8)
+#define E   (5U << 8)
+#define F   (6U << 8)
+#define G   (7U << 8)
+#define H   (8U << 8)
+#define I   (9U << 8)
+#define J   (10U << 8)
+#define K   (11U << 8)
 
-static void GPIOB_CLK_ENABLE(void)
+static GPIO_TypeDef * get_st_gpio(rt_uint16_t gpio_pin)
 {
-#ifdef __HAL_RCC_GPIOB_CLK_ENABLE
-    __HAL_RCC_GPIOB_CLK_ENABLE();
-#endif
+    switch(gpio_pin >> 8)
+    {
+    case A:
+        #ifdef GPIOA
+        return GPIOA;
+        #endif
+    case B:
+        #ifdef GPIOB
+        return GPIOB;
+        #endif
+    case C:
+        #ifdef GPIOC
+        return GPIOC;
+        #endif
+    case D:
+        #ifdef GPIOD
+        return GPIOD;
+        #endif
+    case E:
+        #ifdef GPIOE
+        return GPIOE;
+        #endif
+    case F:
+        #ifdef GPIOF
+        return GPIOF;
+        #endif
+    case G:
+        #ifdef GPIOG
+        return GPIOG;
+        #endif
+    case H:
+        #ifdef GPIOH
+        return GPIOH;
+        #endif
+    case I:
+        #ifdef GPIOI
+        return GPIOI;
+        #endif
+    case J:
+        #ifdef GPIOJ
+        return GPIOJ;
+        #endif
+    case K:
+        #ifdef GPIOK
+        return GPIOK;
+        #endif
+    default:
+        return RT_NULL;
+    }
 }
 
-static void GPIOC_CLK_ENABLE(void)
-{
-#ifdef __HAL_RCC_GPIOC_CLK_ENABLE
-    __HAL_RCC_GPIOC_CLK_ENABLE();
-#endif
-}
+#define get_st_pin(gpio_pin) (0x01 << (gpio_pin&0xFF))
 
-#if (STM32F4xx_PIN_NUMBERS > 48)
-static void GPIOD_CLK_ENABLE(void)
-{
-#ifdef __HAL_RCC_GPIOD_CLK_ENABLE
-    __HAL_RCC_GPIOD_CLK_ENABLE();
-#endif
-}
-#if (STM32F4xx_PIN_NUMBERS > 64)
-static void GPIOE_CLK_ENABLE(void)
-{
-#ifdef __HAL_RCC_GPIOE_CLK_ENABLE
-    __HAL_RCC_GPIOE_CLK_ENABLE();
-#endif
-}
-#if (STM32F4xx_PIN_NUMBERS > 100)
-static void GPIOF_CLK_ENABLE(void)
-{
-#ifdef __HAL_RCC_GPIOF_CLK_ENABLE
-    __HAL_RCC_GPIOF_CLK_ENABLE();
-#endif
-}
-static void GPIOG_CLK_ENABLE(void)
-{
-#ifdef __HAL_RCC_GPIOG_CLK_ENABLE
-    __HAL_RCC_GPIOG_CLK_ENABLE();
-#endif
-}
-#if (STM32F4xx_PIN_NUMBERS > 144)
-static void GPIOH_CLK_ENABLE(void)
-{
-#ifdef __HAL_RCC_GPIOH_CLK_ENABLE
-    __HAL_RCC_GPIOH_CLK_ENABLE();
-#endif
-}
-static void GPIOI_CLK_ENABLE(void)
-{
-#ifdef __HAL_RCC_GPIOI_CLK_ENABLE
-    __HAL_RCC_GPIOI_CLK_ENABLE();
-#endif
-}
-#if (STM32F4xx_PIN_NUMBERS > 176)
-static void GPIOJ_CLK_ENABLE(void)
-{
-#ifdef __HAL_RCC_GPIOJ_CLK_ENABLE
-    __HAL_RCC_GPIOJ_CLK_ENABLE();
-#endif
-}
-static void GPIOK_CLK_ENABLE(void)
+static void drv_clock_enable(rt_uint16_t gpio_pin)
 {
-#ifdef __HAL_RCC_GPIOK_CLK_ENABLE
-    __HAL_RCC_GPIOK_CLK_ENABLE();
-#endif
+    switch(gpio_pin >> 8)
+    {
+    case A:
+        #ifdef __HAL_RCC_GPIOA_CLK_ENABLE
+        __HAL_RCC_GPIOA_CLK_ENABLE();
+        #endif
+        break;
+    case B:
+        #ifdef __HAL_RCC_GPIOB_CLK_ENABLE
+        __HAL_RCC_GPIOB_CLK_ENABLE();
+        #endif
+        break;
+    case C:
+        #ifdef __HAL_RCC_GPIOC_CLK_ENABLE
+        __HAL_RCC_GPIOC_CLK_ENABLE();
+        #endif
+        break;
+    case D:
+        #ifdef __HAL_RCC_GPIOD_CLK_ENABLE
+        __HAL_RCC_GPIOD_CLK_ENABLE();
+        #endif
+        break;
+    case E:
+        #ifdef __HAL_RCC_GPIOE_CLK_ENABLE
+        __HAL_RCC_GPIOE_CLK_ENABLE();
+        #endif
+        break;
+    case F:
+        #ifdef __HAL_RCC_GPIOF_CLK_ENABLE
+        __HAL_RCC_GPIOF_CLK_ENABLE();
+        #endif
+        break;
+    case G:
+        #ifdef __HAL_RCC_GPIOG_CLK_ENABLE
+        __HAL_RCC_GPIOG_CLK_ENABLE();
+        #endif
+        break;
+    case H:
+        #ifdef __HAL_RCC_GPIOH_CLK_ENABLE
+        __HAL_RCC_GPIOH_CLK_ENABLE();
+        #endif
+        break;
+    case I:
+        #ifdef __HAL_RCC_GPIOI_CLK_ENABLE
+        __HAL_RCC_GPIOI_CLK_ENABLE();
+        #endif
+        break;
+    case J:
+        #ifdef __HAL_RCC_GPIOJ_CLK_ENABLE
+        __HAL_RCC_GPIOJ_CLK_ENABLE();
+        #endif
+        break;
+    case K:
+        #ifdef __HAL_RCC_GPIOK_CLK_ENABLE
+        __HAL_RCC_GPIOK_CLK_ENABLE();
+        #endif
+        break;
+    default:
+        break;
+    }
 }
-#endif
-#endif
-#endif
-#endif
-#endif
+
 /* STM32 GPIO driver */
-struct pin_index
-{
-    int index;
-    void (*rcc)(void);
-    GPIO_TypeDef *gpio;
-    uint32_t pin;
-};
-static const struct pin_index pins[] =
+static const rt_uint16_t pins[] =
 {
 #if (STM32F4xx_PIN_NUMBERS == 36)
     __STM32_PIN_DEFAULT,
@@ -1535,74 +1580,58 @@ struct rt_pin_irq_hdr pin_irq_hdr_tab[] =
 };
 
 #define ITEM_NUM(items) sizeof(items) / sizeof(items[0])
-const struct pin_index *get_pin(uint8_t pin)
+const rt_uint16_t get_pin(uint8_t pin)
 {
-    const struct pin_index *index;
+    rt_uint16_t gpio_pin = __STM32_PIN_DEFAULT;
     if (pin < ITEM_NUM(pins))
     {
-        index = &pins[pin];
-        if (index->index == -1)
-            index = RT_NULL;
-    }
-    else
-    {
-        index = RT_NULL;
+        gpio_pin = pins[pin];
     }
-    return index;
+    return gpio_pin;
 };
 
 void stm32_pin_write(rt_device_t dev, rt_base_t pin, rt_base_t value)
 {
-    const struct pin_index *index;
-    index = get_pin(pin);
-    if (index == RT_NULL)
+    rt_uint16_t gpio_pin;
+    gpio_pin = get_pin(pin);
+    if (get_st_gpio(gpio_pin) == RT_NULL)
     {
         return;
     }
-    HAL_GPIO_WritePin(index->gpio, index->pin, (GPIO_PinState)value);
+    HAL_GPIO_WritePin(get_st_gpio(gpio_pin), get_st_pin(gpio_pin), (GPIO_PinState)value);
 }
 
 int stm32_pin_read(rt_device_t dev, rt_base_t pin)
 {
-    int value;
-    const struct pin_index *index;
-    value = PIN_LOW;
-    index = get_pin(pin);
-    if (index == RT_NULL)
+    rt_uint16_t gpio_pin;
+    gpio_pin = get_pin(pin);
+    if (get_st_gpio(gpio_pin) == RT_NULL)
     {
-        return value;
+        return PIN_LOW;
     }
-    value = HAL_GPIO_ReadPin(index->gpio, index->pin);
-    return value;
+    return HAL_GPIO_ReadPin(get_st_gpio(gpio_pin), get_st_pin(gpio_pin));
 }
 
 void stm32_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode)
 {
-    const struct pin_index *index;
+    rt_uint16_t gpio_pin;
     GPIO_InitTypeDef GPIO_InitStruct;
-    index = get_pin(pin);
-    if (index == RT_NULL)
+    gpio_pin = get_pin(pin);
+    if (get_st_gpio(gpio_pin) == RT_NULL)
     {
         return;
     }
     /* GPIO Periph clock enable */
-    index->rcc();
+    drv_clock_enable(gpio_pin);
     /* Configure GPIO_InitStructure */
-    GPIO_InitStruct.Pin = index->pin;
+    GPIO_InitStruct.Pin = get_st_pin(gpio_pin);
     GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
     GPIO_InitStruct.Pull = GPIO_NOPULL;
     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
-    if (mode == PIN_MODE_OUTPUT)
-    {
-        /* output setting */
-        GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
-        GPIO_InitStruct.Pull = GPIO_NOPULL;
-    }
-    else if (mode == PIN_MODE_INPUT)
+    if (mode == PIN_MODE_INPUT)
     {
         /* input setting: not pull. */
         GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
-        GPIO_InitStruct.Pull = GPIO_NOPULL;
     }
     else if (mode == PIN_MODE_INPUT_PULLUP)
     {
@@ -1620,27 +1649,13 @@ void stm32_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode)
     {
         /* output setting: od. */
         GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
-        GPIO_InitStruct.Pull = GPIO_NOPULL;
     }
-    HAL_GPIO_Init(index->gpio, &GPIO_InitStruct);
+    HAL_GPIO_Init(get_st_gpio(gpio_pin), &GPIO_InitStruct);
 }
 
-rt_inline rt_int32_t bit2bitno(rt_uint32_t bit)
+rt_inline const struct pin_irq_map *get_pin_irq_map(rt_uint16_t gpio_pin)
 {
-    int i;
-    for (i = 0; i < 32; i++)
-    {
-        if ((0x01 << i) == bit)
-        {
-            return i;
-        }
-    }
-    return -1;
-}
-
-rt_inline const struct pin_irq_map *get_pin_irq_map(uint32_t pinbit)
-{
-    rt_int32_t mapindex = bit2bitno(pinbit);
+    rt_int32_t mapindex = gpio_pin & 0xFF;
     if (mapindex < 0 || mapindex >= ITEM_NUM(pin_irq_map))
     {
         return RT_NULL;
@@ -1651,15 +1666,15 @@ rt_inline const struct pin_irq_map *get_pin_irq_map(uint32_t pinbit)
 rt_err_t stm32_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
                               rt_uint32_t mode, void (*hdr)(void *args), void *args)
 {
-    const struct pin_index *index;
+    rt_uint16_t gpio_pin;
     rt_base_t level;
     rt_int32_t irqindex = -1;
-    index = get_pin(pin);
-    if (index == RT_NULL)
+    gpio_pin = get_pin(pin);
+    if (get_st_gpio(gpio_pin) == RT_NULL)
     {
         return RT_ENOSYS;
     }
-    irqindex = bit2bitno(index->pin);
+    irqindex = gpio_pin&0xFF;
     if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
     {
         return RT_ENOSYS;
@@ -1688,15 +1703,15 @@ rt_err_t stm32_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
 
 rt_err_t stm32_pin_dettach_irq(struct rt_device *device, rt_int32_t pin)
 {
-    const struct pin_index *index;
+    rt_uint16_t gpio_pin;
     rt_base_t level;
     rt_int32_t irqindex = -1;
-    index = get_pin(pin);
-    if (index == RT_NULL)
+    gpio_pin = get_pin(pin);
+    if (get_st_gpio(gpio_pin) == RT_NULL)
     {
         return RT_ENOSYS;
     }
-    irqindex = bit2bitno(index->pin);
+    irqindex = gpio_pin&0xFF;
     if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
     {
         return RT_ENOSYS;
@@ -1718,19 +1733,19 @@ rt_err_t stm32_pin_dettach_irq(struct rt_device *device, rt_int32_t pin)
 rt_err_t stm32_pin_irq_enable(struct rt_device *device, rt_base_t pin,
                               rt_uint32_t enabled)
 {
-    const struct pin_index *index;
+    rt_uint16_t gpio_pin;
     const struct pin_irq_map *irqmap;
     rt_base_t level;
     rt_int32_t irqindex = -1;
     GPIO_InitTypeDef GPIO_InitStruct;
-    index = get_pin(pin);
-    if (index == RT_NULL)
+    gpio_pin = get_pin(pin);
+    if (get_st_gpio(gpio_pin) == RT_NULL)
     {
         return RT_ENOSYS;
     }
     if (enabled == PIN_IRQ_ENABLE)
     {
-        irqindex = bit2bitno(index->pin);
+        irqindex = gpio_pin&0xFF;
         if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
         {
             return RT_ENOSYS;
@@ -1743,9 +1758,9 @@ rt_err_t stm32_pin_irq_enable(struct rt_device *device, rt_base_t pin,
         }
         irqmap = &pin_irq_map[irqindex];
         /* GPIO Periph clock enable */
-        index->rcc();
+        drv_clock_enable(gpio_pin);
         /* Configure GPIO_InitStructure */
-        GPIO_InitStruct.Pin = index->pin;
+        GPIO_InitStruct.Pin = get_st_pin(gpio_pin);
         GPIO_InitStruct.Pull = GPIO_NOPULL;
         GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
         switch (pin_irq_hdr_tab[irqindex].mode)
@@ -1760,14 +1775,14 @@ rt_err_t stm32_pin_irq_enable(struct rt_device *device, rt_base_t pin,
             GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING;
             break;
         }
-        HAL_GPIO_Init(index->gpio, &GPIO_InitStruct);
+        HAL_GPIO_Init(get_st_gpio(gpio_pin), &GPIO_InitStruct);
         HAL_NVIC_SetPriority(irqmap->irqno, 5, 0);
         HAL_NVIC_EnableIRQ(irqmap->irqno);
         rt_hw_interrupt_enable(level);
     }
     else if (enabled == PIN_IRQ_DISABLE)
     {
-        irqmap = get_pin_irq_map(index->pin);
+        irqmap = get_pin_irq_map(gpio_pin);
         if (irqmap == RT_NULL)
         {
             return RT_ENOSYS;
@@ -1799,8 +1814,17 @@ int rt_hw_pin_init(void)
 }
 INIT_BOARD_EXPORT(rt_hw_pin_init);
 
-rt_inline void pin_irq_hdr(int irqno)
+rt_inline void pin_irq_hdr(uint16_t GPIO_Pin)
 {
+    int irqno = 0;
+    for(irqno = 0; irqno < 16; irqno ++)
+    {
+        if((0x01 << irqno) == GPIO_Pin)
+        {
+            break;
+        }
+    }
+    if(irqno == 16)return;
     if (pin_irq_hdr_tab[irqno].hdr)
     {
         pin_irq_hdr_tab[irqno].hdr(pin_irq_hdr_tab[irqno].args);
@@ -1809,7 +1833,7 @@ rt_inline void pin_irq_hdr(int irqno)
 
 void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
 {
-    pin_irq_hdr(bit2bitno(GPIO_Pin));
+    pin_irq_hdr(GPIO_Pin);
 }
 
 void EXTI0_IRQHandler(void)
diff --git a/bsp/stm32f4xx-HAL/drivers/drv_gpio.h b/bsp/stm32f4xx-HAL/drivers/drv_gpio.h
index 1a32164d5c6404b4b5c33a8df55a6c2d7fa9def1..7928233b8677a05e277f05cd43862baf1d20512f 100644
--- a/bsp/stm32f4xx-HAL/drivers/drv_gpio.h
+++ b/bsp/stm32f4xx-HAL/drivers/drv_gpio.h
@@ -11,14 +11,7 @@
  * Date           Author       Notes
  * 2015-01-05     Bernard      the first version
  */
-#ifndef GPIO_H__
-#define GPIO_H__
-struct stm32_hw_pin_userdata
-{
-    int pin;
-    uint32_t mode;
-};
-#define PIN_USERDATA_END {-1,0}
-extern struct stm32_hw_pin_userdata stm32_pins[];
-int rt_hw_pin_init(void);
+#ifndef __DRV_GPIO_H__
+#define __DRV_GPIO_H__
+extern int rt_hw_pin_init(void);
 #endif