1 /*!
2  * \file      lpm-board.c
3  *
4  * \brief     Target board low power modes management
5  *
6  * \copyright Revised BSD License, see section \ref LICENSE.
7  *
8  * \code
9  *                ______                              _
10  *               / _____)             _              | |
11  *              ( (____  _____ ____ _| |_ _____  ____| |__
12  *               \____ \| ___ |    (_   _) ___ |/ ___)  _ \
13  *               _____) ) ____| | | || |_| ____( (___| | | |
14  *              (______/|_____)_|_|_| \__)_____)\____)_| |_|
15  *              (C)2013-2017 Semtech - STMicroelectronics
16  *
17  * \endcode
18  *
19  * \author    Miguel Luis ( Semtech )
20  *
21  * \author    Gregory Cristian ( Semtech )
22  *
23  * \author    MCD Application Team (C)( STMicroelectronics International )
24  */
25 #include <stdint.h>
26 #include "stm32l4xx.h"
27 #include "utilities.h"
28 #include "lpm-board.h"
29 
30 static uint32_t StopModeDisable = 0;
31 static uint32_t OffModeDisable = 0;
32 
LpmSetOffMode(LpmId_t id,LpmSetMode_t mode)33 void LpmSetOffMode( LpmId_t id, LpmSetMode_t mode )
34 {
35     CRITICAL_SECTION_BEGIN( );
36 
37     switch( mode )
38     {
39         case LPM_DISABLE:
40         {
41             OffModeDisable |= ( uint32_t )id;
42             break;
43         }
44         case LPM_ENABLE:
45         {
46             OffModeDisable &= ~( uint32_t )id;
47             break;
48         }
49         default:
50         {
51             break;
52         }
53     }
54 
55     CRITICAL_SECTION_END( );
56     return;
57 }
58 
LpmSetStopMode(LpmId_t id,LpmSetMode_t mode)59 void LpmSetStopMode( LpmId_t id, LpmSetMode_t mode )
60 {
61     CRITICAL_SECTION_BEGIN( );
62 
63     switch( mode )
64     {
65         case LPM_DISABLE:
66         {
67             StopModeDisable |= ( uint32_t )id;
68             break;
69         }
70         case LPM_ENABLE:
71         {
72             StopModeDisable &= ~( uint32_t )id;
73             break;
74         }
75         default:
76         {
77             break;
78         }
79     }
80 
81     CRITICAL_SECTION_END( );
82     return;
83 }
84 
LpmEnterLowPower(void)85 void LpmEnterLowPower( void )
86 {
87     if( StopModeDisable != 0 )
88     {
89         /*!
90         * SLEEP mode is required
91         */
92         LpmEnterSleepMode( );
93         LpmExitSleepMode( );
94     }
95     else
96     {
97         if( OffModeDisable != 0 )
98         {
99             /*!
100             * STOP mode is required
101             */
102             LpmEnterStopMode( );
103             LpmExitStopMode( );
104         }
105         else
106         {
107             /*!
108             * OFF mode is required
109             */
110             LpmEnterOffMode( );
111             LpmExitOffMode( );
112         }
113     }
114     return;
115 }
116 
LpmGetMode(void)117 LpmGetMode_t LpmGetMode(void)
118 {
119     LpmGetMode_t mode;
120 
121     CRITICAL_SECTION_BEGIN( );
122 
123     if( StopModeDisable != 0 )
124     {
125         mode = LPM_SLEEP_MODE;
126     }
127     else
128     {
129         if( OffModeDisable != 0 )
130         {
131             mode = LPM_STOP_MODE;
132         }
133         else
134         {
135             mode = LPM_OFF_MODE;
136         }
137     }
138 
139     CRITICAL_SECTION_END( );
140     return mode;
141 }
142 
LpmEnterSleepMode(void)143 __weak void LpmEnterSleepMode( void )
144 {
145 }
146 
LpmExitSleepMode(void)147 __weak void LpmExitSleepMode( void )
148 {
149 }
150 
LpmEnterStopMode(void)151 __weak void LpmEnterStopMode( void )
152 {
153 }
154 
LpmExitStopMode(void)155 __weak void LpmExitStopMode( void )
156 {
157 }
158 
LpmEnterOffMode(void)159 __weak void LpmEnterOffMode( void )
160 {
161 }
162 
LpmExitOffMode(void)163 __weak void LpmExitOffMode( void )
164 {
165 }
166