text: /*
   * @brief LPC8xx IOCON driver
   *
   * @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 licenser 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 "chip.h"
  
  /*****************************************************************************
   * Private types/enumerations/variables
   ****************************************************************************/
  
  /*****************************************************************************
   * Public types/enumerations/variables
   ****************************************************************************/
  
  /*****************************************************************************
   * Private functions
   ****************************************************************************/
  
  /*****************************************************************************
   * Public functions
   ****************************************************************************/
  
  /* Set the pin mode (pull-up/pull-down). */
  void Chip_IOCON_PinSetMode(LPC_IOCON_T *pIOCON, CHIP_PINx_T pin, CHIP_PIN_MODE_T mode)
  {
  	uint32_t reg;
  
  	reg = pIOCON->PIO0[pin] & ~(PIN_MODE_MASK);
  	pIOCON->PIO0[pin] = reg | (mode << PIN_MODE_BITNUM);
  }
  
  /* Enables/disables the pin hysteresis. */
  void Chip_IOCON_PinSetHysteresis(LPC_IOCON_T *pIOCON, CHIP_PINx_T pin, bool enable)
  {
  	if (enable == true) {
  		Chip_IOCON_PinEnableHysteresis(pIOCON, pin);
  	}
  	else {
  		Chip_IOCON_PinDisableHysteresis(pIOCON, pin);
  	}
  }
  
  /*Inverts (or not) the input seen by a pin. */
  void Chip_IOCON_PinSetInputInverted(LPC_IOCON_T *pIOCON, CHIP_PINx_T pin, bool invert)
  {
  	if (invert == true) {
  		Chip_IOCON_PinEnableInputInverted(pIOCON, pin);
  	}
  	else {
  		Chip_IOCON_PinDisableInputInverted(pIOCON, pin);
  	}
  }
  
  /* Enables/disables Open-Drain mode for a pin. */
  void Chip_IOCON_PinSetOpenDrainMode(LPC_IOCON_T *pIOCON, CHIP_PINx_T pin, bool open_drain)
  {
  	if (open_drain == true) {
  		Chip_IOCON_PinEnableOpenDrainMode(pIOCON, pin);
  	}
  	else {
  		Chip_IOCON_PinDisableOpenDrainMode(pIOCON, pin);
  	}
  }
  
  /* Enable/configure digital filter sample mode for a pin. */
  void Chip_IOCON_PinSetSampleMode(LPC_IOCON_T *pIOCON, CHIP_PINx_T pin, CHIP_PIN_SMODE_T smode)
  {
  	uint32_t reg;
  
  	reg = pIOCON->PIO0[pin] & ~(PIN_SMODE_MASK);
  	pIOCON->PIO0[pin] = reg | (smode << PIN_SMODE_BITNUM);
  }
  
  /* Set the peripheral clock divisor for a pin. */
  void Chip_IOCON_PinSetClockDivisor(LPC_IOCON_T *pIOCON, CHIP_PINx_T pin, CHIP_PIN_CLKDIV_T clkdiv)
  {
  	uint32_t reg;
  
  	reg = pIOCON->PIO0[pin] & ~(PIN_CLKDIV_MASK);
  	pIOCON->PIO0[pin] = reg | (clkdiv << PIN_CLKDIV_BITNUM);
  }
  
  /* Set the I2C mode for a pin. */
  void Chip_IOCON_PinSetI2CMode(LPC_IOCON_T *pIOCON, CHIP_PINx_T pin, CHIP_PIN_I2CMODE_T mode)
  {
  	uint32_t reg;
  
  	/* I2C mode bits only for I2C pins */
  	reg = pIOCON->PIO0[pin] & ~(PIN_I2CMODE_MASK);
  	pIOCON->PIO0[pin] = reg | (mode << PIN_I2CMODE_BITNUM);
  }
  
  /* Set all I/O Control pin muxing */
  void Chip_IOCON_SetPinMuxing(LPC_IOCON_T *pIOCON, const PINMUX_GRP_T* pinArray, uint32_t arrayLength)
  {
  	uint32_t ix;
  
  	for (ix = 0; ix < arrayLength; ix++ ) {
  		Chip_IOCON_PinMuxSet(pIOCON, pinArray[ix].pin, pinArray[ix].modefunc);
  	}
  }
  