From 3ea5cd0bdbe882bb63925302210cd0e4f2d328b6 Mon Sep 17 00:00:00 2001
From: uestczyh222 <lymz@foxmail.com>
Date: Fri, 9 Feb 2018 17:03:41 +0800
Subject: [PATCH] =?UTF-8?q?[Bsp]=E5=A2=9E=E5=BC=BAF10x=5FHAL=E7=9A=84GPIO?=
 =?UTF-8?q?=E4=B8=AD=E6=96=AD=E9=80=BB=E8=BE=91?=
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---
 bsp/stm32f10x-HAL/drivers/drv_gpio.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/bsp/stm32f10x-HAL/drivers/drv_gpio.c b/bsp/stm32f10x-HAL/drivers/drv_gpio.c
index e0701e663..a61f5ab2a 100644
--- a/bsp/stm32f10x-HAL/drivers/drv_gpio.c
+++ b/bsp/stm32f10x-HAL/drivers/drv_gpio.c
@@ -772,18 +772,20 @@ rt_err_t stm32_pin_irq_enable(struct rt_device *device, rt_base_t pin,
         index->rcc();
         /* Configure GPIO_InitStructure */
         GPIO_InitStruct.Pin = index->pin;
-        GPIO_InitStruct.Pull = GPIO_NOPULL;
         GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
         switch (pin_irq_hdr_tab[irqindex].mode)
         {
         case PIN_IRQ_MODE_RISING:
             GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
+            GPIO_InitStruct.Pull = GPIO_PULLDOWN;
             break;
         case PIN_IRQ_MODE_FALLING:
             GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
+            GPIO_InitStruct.Pull = GPIO_PULLUP;
             break;
         case PIN_IRQ_MODE_RISING_FALLING:
             GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING;
+            GPIO_InitStruct.Pull = GPIO_NOPULL;
             break;
         }
         HAL_GPIO_Init(index->gpio, &GPIO_InitStruct);