text: /**************************************************************************//**
   * @file     gpio.c
   * @version  V1.00
   * $Revision: 9 $
   * $Date: 14/10/06 11:47a $
   * @brief    NUC472/NUC442 GPIO driver source file
   *
   * @note
   * Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
  *****************************************************************************/
  #include "NUC472_442.h"
  
  
  
  /** @addtogroup NUC472_442_Device_Driver NUC472/NUC442 Device Driver
    @{
  */
  
  /** @addtogroup NUC472_442_GPIO_Driver GPIO Driver
    @{
  */
  
  
  /** @addtogroup NUC472_442_GPIO_EXPORTED_FUNCTIONS GPIO Exported Functions
    @{
  */
  
  /**
   * @brief       Set GPIO operation mode
   *
   * @param[in]   gpio        GPIO port. It could be \ref PA, \ref PB, ... or \ref GPI
   * @param[in]   u32PinMask  The single or multiple pins of specified GPIO port.
   * @param[in]   u32Mode     Operation mode. \ref GPIO_MODE_INPUT, \ref GPIO_MODE_OUTPUT, \ref GPIO_MODE_OPEN_DRAIN, \ref GPIO_MODE_QUASI
   *
   * @return      None
   *
   * @details     This function is used to set specified GPIO operation mode.
   */
  void GPIO_SetMode(GPIO_T *gpio, uint32_t u32PinMask, uint32_t u32Mode)
  {
      uint32_t i;
  
      for (i=0; i<GPIO_PIN_MAX; i++) {
          if (u32PinMask & (1 << i)) {
              gpio->MODE = (gpio->MODE & ~(0x3 << (i << 1))) | (u32Mode << (i << 1));
          }
      }
  }
  
  /**
   * @brief       Enable GPIO interrupt
   *
   * @param[in]   gpio            GPIO port. It could be \ref PA, \ref PB, ... or \ref GPI
   * @param[in]   u32Pin          The pin of specified GPIO port. It could be 0 ~ 15.
   * @param[in]   u32IntAttribs   The interrupt attribute of specified GPIO pin. It could be \n
   *                              \ref GPIO_INT_RISING, \ref GPIO_INT_FALLING, \ref GPIO_INT_BOTH_EDGE, \ref GPIO_INT_HIGH, GPIO_INT_LOW
   *
   * @return      None
   *
   * @details     This function is used to enable specified GPIO pin interrupt.
   */
  void GPIO_EnableInt(GPIO_T *gpio, uint32_t u32Pin, uint32_t u32IntAttribs)
  {
      gpio->INTTYPE |= (((u32IntAttribs >> 24) & 0xFFUL) << u32Pin);
      gpio->INTEN |= ((u32IntAttribs & 0xFFFFFFUL) << u32Pin);
  }
  
  
  /**
   * @brief       Disable GPIO interrupt
   *
   * @param[in]   gpio        GPIO port. It could be \ref PA, \ref PB, ... or \ref GPI
   * @param[in]   u32Pin      The pin of specified GPIO port. It could be 0 ~ 15.
   *
   * @return      None
   *
   * @details     This function is used to disable specified GPIO pin interrupt.
   */
  void GPIO_DisableInt(GPIO_T *gpio, uint32_t u32Pin)
  {
      gpio->INTTYPE &= ~(1UL << u32Pin);
      gpio->INTEN &= ~((0x00010001UL) << u32Pin);
  }
  
  
  
  /*@}*/ /* end of group NUC472_442_GPIO_EXPORTED_FUNCTIONS */
  
  /*@}*/ /* end of group NUC472_442_GPIO_Driver */
  
  /*@}*/ /* end of group NUC472_442_Device_Driver */
  
  /*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
  