1 /*
2 * @brief LPC15xx PMU chip driver
3 *
4 * @note
5 * Copyright(C) NXP Semiconductors, 2014
6 * All rights reserved.
7 *
8 * @par
9 * Software that is described herein is for illustrative purposes only
10 * which provides customers with programming information regarding the
11 * LPC products. This software is supplied "AS IS" without any warranties of
12 * any kind, and NXP Semiconductors and its licensor disclaim any and
13 * all warranties, express or implied, including all implied warranties of
14 * merchantability, fitness for a particular purpose and non-infringement of
15 * intellectual property rights. NXP Semiconductors assumes no responsibility
16 * or liability for the use of the software, conveys no license or rights under any
17 * patent, copyright, mask work right, or any other intellectual property rights in
18 * or to any products. NXP Semiconductors reserves the right to make changes
19 * in the software without notification. NXP Semiconductors also makes no
20 * representation or warranty that such application will be suitable for the
21 * specified use without further testing or modification.
22 *
23 * @par
24 * Permission to use, copy, modify, and distribute this software and its
25 * documentation is hereby granted, under NXP Semiconductors' and its
26 * licensor's relevant copyrights in the software, without fee, provided that it
27 * is used in conjunction with NXP Semiconductors microcontrollers. This
28 * copyright, permission, and disclaimer notice must appear in all copies of
29 * this code.
30 */
31
32 #include "chip.h"
33
34 /*****************************************************************************
35 * Private types/enumerations/variables
36 ****************************************************************************/
37
38 /*****************************************************************************
39 * Public types/enumerations/variables
40 ****************************************************************************/
41
42 /*****************************************************************************
43 * Private functions
44 ****************************************************************************/
45
46 /*****************************************************************************
47 * Public functions
48 ****************************************************************************/
49
50 /* Enter MCU Sleep mode */
Chip_PMU_SleepState(LPC_PMU_T * pPMU)51 void Chip_PMU_SleepState(LPC_PMU_T *pPMU)
52 {
53 Chip_PMU_ClearSleepFlags(LPC_PMU, PMU_PCON_SLEEPFLAG | PMU_PCON_DPDFLAG);
54 /* Enter sleep mode */
55 __WFI();
56 }
57
58 /* Enter MCU Deep Sleep mode */
Chip_PMU_DeepSleepState(LPC_PMU_T * pPMU)59 void Chip_PMU_DeepSleepState(LPC_PMU_T *pPMU)
60 {
61 Chip_PMU_ClearSleepFlags(LPC_PMU, PMU_PCON_SLEEPFLAG | PMU_PCON_DPDFLAG);
62 SCB->SCR |= (1UL << SCB_SCR_SLEEPDEEP_Pos);
63 /* Enter deep sleep mode */
64 __WFI();
65 }
66
67 /* Enter MCU Power down mode */
Chip_PMU_PowerDownState(LPC_PMU_T * pPMU)68 void Chip_PMU_PowerDownState(LPC_PMU_T *pPMU)
69 {
70 Chip_PMU_ClearSleepFlags(LPC_PMU, PMU_PCON_SLEEPFLAG | PMU_PCON_DPDFLAG);
71 SCB->SCR |= (1UL << SCB_SCR_SLEEPDEEP_Pos);
72 // There seems to be no difference between Deep sleep and power down mode, use ROM API
73 /* Enter power down mode */
74 __WFI();
75 }
76
77 /* Enter MCU Deep Power down mode */
Chip_PMU_DeepPowerDownState(LPC_PMU_T * pPMU)78 void Chip_PMU_DeepPowerDownState(LPC_PMU_T *pPMU)
79 {
80 Chip_PMU_ClearSleepFlags(LPC_PMU, PMU_PCON_SLEEPFLAG | PMU_PCON_DPDFLAG);
81 SCB->SCR |= (1UL << SCB_SCR_SLEEPDEEP_Pos);
82 pPMU->PCON = PMU_PCON_PM_DEEPPOWERDOWN;
83 /* Enter deep power down mode */
84 __WFI();
85 }
86
87 /* Put some of the peripheral in sleep mode */
Chip_PMU_Sleep(LPC_PMU_T * pPMU,CHIP_PMU_MCUPOWER_T SleepMode)88 void Chip_PMU_Sleep(LPC_PMU_T *pPMU, CHIP_PMU_MCUPOWER_T SleepMode)
89 {
90 if (SleepMode == PMU_MCU_DEEP_SLEEP) {
91 Chip_PMU_DeepSleepState(pPMU);
92 }
93 else if (SleepMode == PMU_MCU_POWER_DOWN) {
94 Chip_PMU_PowerDownState(pPMU);
95 }
96 else if (SleepMode == PMU_MCU_DEEP_PWRDOWN) {
97 Chip_PMU_DeepPowerDownState(pPMU);
98 }
99 else {
100 /* PMU_MCU_SLEEP */
101 Chip_PMU_SleepState(pPMU);
102 }
103 }
104