STM32F4 : correct ST HAL API call

- RCC init: one PLL parameter was missing
- GPIO: mode was not allowed by ST HAL API

targets/TARGET_STM/TARGET_STM32F4/TARGET_DISCO_F469NI/device/system_stm32f4xx.c

@@ -808,6 +808,8 @@ void SystemClock_Config(void)
   RCC_OscInitStruct.PLL.PLLN = 336;
   RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
   RCC_OscInitStruct.PLL.PLLQ = 7;
+  RCC_OscInitStruct.PLL.PLLR = 2;  // I2S clocks
+
   HAL_RCC_OscConfig(&RCC_OscInitStruct);
 
   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1
@@ -843,6 +845,8 @@ void SystemClock_Config(void)
   RCC_OscInitStruct.PLL.PLLN = 360;
   RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
   RCC_OscInitStruct.PLL.PLLQ = 7;
+  RCC_OscInitStruct.PLL.PLLR = 2;  // I2S clocks
+
   HAL_RCC_OscConfig(&RCC_OscInitStruct);
 
   HAL_PWREx_ActivateOverDrive();

targets/TARGET_STM/TARGET_STM32F4/TARGET_NUCLEO_F410RB/device/system_stm32f4xx.c

@@ -840,6 +840,7 @@ uint8_t SetSysClock_PLL_HSE(uint8_t bypass)
   RCC_OscInitStruct.PLL.PLLN            = 192;           // VCO output clock = 384 MHz (2 MHz * 192)
   RCC_OscInitStruct.PLL.PLLP            = RCC_PLLP_DIV4; // PLLCLK = 96 MHz (384 MHz / 4)
   RCC_OscInitStruct.PLL.PLLQ            = 8;             // USB clock = 48 MHz (384 MHz / 8) --> Good for USB
+  RCC_OscInitStruct.PLL.PLLR            = 2;             // I2S clocks
   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
   {
     return 0; // FAIL

targets/TARGET_STM/TARGET_STM32F4/gpio_irq_api.c

@@ -304,7 +304,7 @@ void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
                 mode = STM_MODE_IT_FALLING;
                 obj->event = EDGE_FALL;
             } else { // NONE or RISE
-                mode = STM_MODE_IT_EVT_RESET;
+                mode = STM_MODE_INPUT;
                 obj->event = EDGE_NONE;
             }
         }
@@ -313,7 +313,7 @@ void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
                 mode = STM_MODE_IT_RISING;
                 obj->event = EDGE_RISE;
             } else { // NONE or FALL
-                mode = STM_MODE_IT_EVT_RESET;
+                mode = STM_MODE_INPUT;
                 obj->event = EDGE_NONE;
             }
         }