110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/*
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* @brief LPC8xx PMU chip driver
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*
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* @note
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* Copyright(C) NXP Semiconductors, 2012
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* All rights reserved.
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*
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* @par
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* LPC products. This software is supplied "AS IS" without any warranties of
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* any kind, and NXP Semiconductors and its licensor disclaim any and
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* all warranties, express or implied, including all implied warranties of
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* merchantability, fitness for a particular purpose and non-infringement of
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* intellectual property rights. NXP Semiconductors assumes no responsibility
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* or liability for the use of the software, conveys no license or rights under any
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* patent, copyright, mask work right, or any other intellectual property rights in
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* or to any products. NXP Semiconductors reserves the right to make changes
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* in the software without notification. NXP Semiconductors also makes no
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* representation or warranty that such application will be suitable for the
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* specified use without further testing or modification.
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*
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* @par
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors' and its
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* licensor's relevant copyrights in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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*/
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#include "chip.h"
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/*****************************************************************************
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* Private types/enumerations/variables
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****************************************************************************/
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/* Reserved bits mask for SCR register */
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#define SCB_SCR_RESERVED (~(SCB_SCR_SLEEPONEXIT_Msk|SCB_SCR_SLEEPDEEP_Msk|SCB_SCR_SEVONPEND_Msk))
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/*****************************************************************************
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* Public types/enumerations/variables
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****************************************************************************/
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/*****************************************************************************
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* Private functions
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****************************************************************************/
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/*****************************************************************************
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* Public functions
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****************************************************************************/
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/* Enter MCU Sleep mode */
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void Chip_PMU_SleepState(LPC_PMU_T *pPMU)
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{
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SCB->SCR = ~(1UL << SCB_SCR_SLEEPDEEP_Pos) & (SCB->SCR & ~SCB_SCR_RESERVED);
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pPMU->PCON = PMU_PCON_PM_SLEEP;
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/* Enter sleep mode */
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__WFI();
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}
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/* Enter MCU Deep Sleep mode */
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void Chip_PMU_DeepSleepState(LPC_PMU_T *pPMU)
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{
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SCB->SCR = (1UL << SCB_SCR_SLEEPDEEP_Pos) | (SCB->SCR & ~SCB_SCR_RESERVED);
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pPMU->PCON = PMU_PCON_PM_DEEPSLEEP;
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/* Enter sleep mode */
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__WFI();
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}
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/* Enter MCU Power down mode */
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void Chip_PMU_PowerDownState(LPC_PMU_T *pPMU)
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{
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SCB->SCR = (1UL << SCB_SCR_SLEEPDEEP_Pos) | (SCB->SCR & ~SCB_SCR_RESERVED);
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pPMU->PCON = PMU_PCON_PM_POWERDOWN;
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/* Enter sleep mode */
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__WFI();
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}
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/* Enter MCU Deep Power down mode */
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void Chip_PMU_DeepPowerDownState(LPC_PMU_T *pPMU)
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{
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SCB->SCR = (1UL << SCB_SCR_SLEEPDEEP_Pos) | (SCB->SCR & ~SCB_SCR_RESERVED);
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pPMU->PCON = PMU_PCON_PM_DEEPPOWERDOWN;
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/* Enter sleep mode */
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__WFI();
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}
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/* Put some of the peripheral in sleep mode */
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void Chip_PMU_Sleep(LPC_PMU_T *pPMU, CHIP_PMU_MCUPOWER_T SleepMode)
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{
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if (SleepMode == PMU_MCU_DEEP_SLEEP) {
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Chip_PMU_DeepSleepState(pPMU);
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}
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else if (SleepMode == PMU_MCU_POWER_DOWN) {
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Chip_PMU_PowerDownState(pPMU);
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}
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else if (SleepMode == PMU_MCU_DEEP_PWRDOWN) {
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Chip_PMU_DeepPowerDownState(pPMU);
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}
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else {
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/* PMU_MCU_SLEEP */
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Chip_PMU_SleepState(pPMU);
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}
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}
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