108 lines
3.9 KiB
C
108 lines
3.9 KiB
C
/*
|
|
* @brief LPC15xx Switch Matrix driver
|
|
*
|
|
* @note
|
|
* Copyright(C) NXP Semiconductors, 2013
|
|
* 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
|
|
****************************************************************************/
|
|
|
|
#define PINASSIGN_IDX(movable) (((movable) >> 4))
|
|
#define PINSHIFT(movable) (8 * ((movable) & (0xF)))
|
|
|
|
/*****************************************************************************
|
|
* Public types/enumerations/variables
|
|
****************************************************************************/
|
|
|
|
/*****************************************************************************
|
|
* Private functions
|
|
****************************************************************************/
|
|
|
|
/*****************************************************************************
|
|
* Public functions
|
|
****************************************************************************/
|
|
|
|
/* Assign movable pin function to physical pin in Switch Matrix */
|
|
void Chip_SWM_MovablePinAssign(CHIP_SWM_PIN_MOVABLE_T movable, uint8_t pin)
|
|
{
|
|
uint32_t temp;
|
|
int pinshift = PINSHIFT(movable), regIndex = PINASSIGN_IDX(movable);
|
|
|
|
temp = LPC_SWM->PINASSIGN[regIndex] & (~(0xFF << pinshift));
|
|
LPC_SWM->PINASSIGN[regIndex] = temp | (pin << pinshift);
|
|
}
|
|
|
|
/* Enables a fixed function pin in the Switch Matrix */
|
|
void Chip_SWM_EnableFixedPin(CHIP_SWM_PIN_FIXED_T pin)
|
|
{
|
|
uint32_t regOff, pinPos;
|
|
|
|
pinPos = ((uint32_t) pin) & 0x1F;
|
|
regOff = ((uint32_t) pin) >> 7;
|
|
|
|
/* Set low to enable fixed pin */
|
|
LPC_SWM->PINENABLE[regOff] &= ~(1 << pinPos);
|
|
}
|
|
|
|
/* Disables a fixed function pin in the Switch Matrix */
|
|
void Chip_SWM_DisableFixedPin(CHIP_SWM_PIN_FIXED_T pin)
|
|
{
|
|
uint32_t regOff, pinPos;
|
|
|
|
pinPos = ((uint32_t) pin) & 0x1F;
|
|
regOff = ((uint32_t) pin) >> 7;
|
|
|
|
/* Set low to enable fixed pin */
|
|
LPC_SWM->PINENABLE[regOff] |= (1 << pinPos);
|
|
}
|
|
|
|
/* Enables or disables a fixed function pin in the Switch Matrix */
|
|
void Chip_SWM_FixedPinEnable(CHIP_SWM_PIN_FIXED_T pin, bool enable)
|
|
{
|
|
if (enable) {
|
|
Chip_SWM_EnableFixedPin(pin);
|
|
}
|
|
else {
|
|
Chip_SWM_DisableFixedPin(pin);
|
|
}
|
|
}
|
|
|
|
/* Tests whether a fixed function pin is enabled or disabled in the Switch Matrix */
|
|
bool Chip_SWM_IsFixedPinEnabled(CHIP_SWM_PIN_FIXED_T pin)
|
|
{
|
|
uint32_t regOff, pinPos;
|
|
|
|
pinPos = ((uint32_t) pin) & 0x1F;
|
|
regOff = ((uint32_t) pin) >> 7;
|
|
|
|
return (bool) ((LPC_SWM->PINENABLE[regOff] & (1 << pinPos)) == 0);
|
|
}
|