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/*
* @brief LPC8xx PMU chip 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 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 "chip.h"
/*****************************************************************************
* Private types/enumerations/variables
****************************************************************************/
/* Reserved bits mask for SCR register */
#define SCB_SCR_RESERVED (~(SCB_SCR_SLEEPONEXIT_Msk|SCB_SCR_SLEEPDEEP_Msk|SCB_SCR_SEVONPEND_Msk))
/*****************************************************************************
* Public types/enumerations/variables
****************************************************************************/
/*****************************************************************************
* Private functions
****************************************************************************/
/*****************************************************************************
* Public functions
****************************************************************************/
/* Enter MCU Sleep mode */
void Chip_PMU_SleepState(LPC_PMU_T *pPMU)
{
SCB->SCR = ~(1UL << SCB_SCR_SLEEPDEEP_Pos) & (SCB->SCR & ~SCB_SCR_RESERVED);
pPMU->PCON = PMU_PCON_PM_SLEEP;
/* Enter sleep mode */
__WFI();
}
/* Enter MCU Deep Sleep mode */
void Chip_PMU_DeepSleepState(LPC_PMU_T *pPMU)
{
SCB->SCR = (1UL << SCB_SCR_SLEEPDEEP_Pos) | (SCB->SCR & ~SCB_SCR_RESERVED);
pPMU->PCON = PMU_PCON_PM_DEEPSLEEP;
/* Enter sleep mode */
__WFI();
}
/* Enter MCU Power down mode */
void Chip_PMU_PowerDownState(LPC_PMU_T *pPMU)
{
SCB->SCR = (1UL << SCB_SCR_SLEEPDEEP_Pos) | (SCB->SCR & ~SCB_SCR_RESERVED);
pPMU->PCON = PMU_PCON_PM_POWERDOWN;
/* Enter sleep mode */
__WFI();
}
/* Enter MCU Deep Power down mode */
void Chip_PMU_DeepPowerDownState(LPC_PMU_T *pPMU)
{
SCB->SCR = (1UL << SCB_SCR_SLEEPDEEP_Pos) | (SCB->SCR & ~SCB_SCR_RESERVED);
pPMU->PCON = PMU_PCON_PM_DEEPPOWERDOWN;
/* Enter sleep mode */
__WFI();
}
/* Put some of the peripheral in sleep mode */
void Chip_PMU_Sleep(LPC_PMU_T *pPMU, CHIP_PMU_MCUPOWER_T SleepMode)
{
if (SleepMode == PMU_MCU_DEEP_SLEEP) {
Chip_PMU_DeepSleepState(pPMU);
}
else if (SleepMode == PMU_MCU_POWER_DOWN) {
Chip_PMU_PowerDownState(pPMU);
}
else if (SleepMode == PMU_MCU_DEEP_PWRDOWN) {
Chip_PMU_DeepPowerDownState(pPMU);
}
else {
/* PMU_MCU_SLEEP */
Chip_PMU_SleepState(pPMU);
}
}
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