rt-thread/bsp/xplorer4330/libraries/lpc_ip/gpiogrpint_001.c

/*
* @brief GPIO Group Interrupt Registers and control functions
*
* @note
* Copyright(C) NXP Semiconductors, 2012
* All rights reserved.
*
* @par
* Software that is described herein is for illustrative purposes only
* which provides customers with programming information regarding the
* LPC products.  This software is supplied "AS IS" without any warranties of
* any kind, and NXP Semiconductors and its licensor disclaim any and 
* all warranties, express or implied, including all implied warranties of 
* merchantability, fitness for a particular purpose and non-infringement of 
* intellectual property rights.  NXP Semiconductors assumes no responsibility
* or liability for the use of the software, conveys no license or rights under any
* patent, copyright, mask work right, or any other intellectual property rights in 
* or to any products. NXP Semiconductors reserves the right to make changes
* in the software without notification. NXP Semiconductors also makes no 
* representation or warranty that such application will be suitable for the
* specified use without further testing or modification.
* 
* @par
* Permission to use, copy, modify, and distribute this software and its 
* documentation is hereby granted, under NXP Semiconductors' and its 
* licensor's relevant copyrights in the software, without fee, provided that it 
* is used in conjunction with NXP Semiconductors microcontrollers.  This 
* copyright, permission, and disclaimer notice must appear in all copies of 
* this code.
*/

#include "gpiogrpint_001.h"

/*****************************************************************************
 * Private types/enumerations/variables
 ****************************************************************************/

/*****************************************************************************
 * Public types/enumerations/variables
 ****************************************************************************/

/*****************************************************************************
 * Private functions
 ****************************************************************************/

/*****************************************************************************
 * Public functions
 ****************************************************************************/

/* GPIO Group Interrupt Pin Add to Group */
void IP_GPIOGP_IntPinAdd(IP_GPIOGROUPINT_001_Type *pGPIOGPINT, uint8_t PortNum, uint8_t PinNum, bool ActiveMode)
{
	volatile uint32_t wordDat;
        bool pinstate;

	/* configure to PORT_ENA register */
	pGPIOGPINT->PORT_ENA[PortNum] |= (1<<PinNum);

	/* configure to PORT_POL */
	wordDat = pGPIOGPINT->PORT_POL[PortNum];
        pinstate = (bool) (((wordDat>>PinNum)&0x01) != 0);
	if (pinstate != ActiveMode) {
		if (ActiveMode == true) { /* active HIGH */
			wordDat |= (1<<PinNum);
		} else { /* active LOW */
			wordDat &= ~(1<<PinNum);
		}
		pGPIOGPINT->PORT_POL[PortNum] = wordDat;		
	}
}