Christina Quast | 8be71e4 | 2014-12-02 13:06:01 +0100 | [diff] [blame] | 1 | /* ----------------------------------------------------------------------------
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| 2 | * ATMEL Microcontroller Software Support
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| 3 | * ----------------------------------------------------------------------------
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| 4 | * Copyright (c) 2008, Atmel Corporation
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| 5 | *
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| 6 | * All rights reserved.
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| 7 | *
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| 8 | * Redistribution and use in source and binary forms, with or without
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| 9 | * modification, are permitted provided that the following conditions are met:
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| 10 | *
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| 11 | * - Redistributions of source code must retain the above copyright notice,
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| 12 | * this list of conditions and the disclaimer below.
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| 13 | *
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| 14 | * Atmel's name may not be used to endorse or promote products derived from
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| 15 | * this software without specific prior written permission.
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| 16 | *
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| 17 | * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 19 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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| 20 | * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 22 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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| 23 | * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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| 24 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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| 25 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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| 26 | * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | * ----------------------------------------------------------------------------
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| 28 | */
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| 29 |
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| 30 | //------------------------------------------------------------------------------
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| 31 | // Headers
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| 32 | //------------------------------------------------------------------------------
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| 33 |
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| 34 | #include "chip.h"
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| 35 |
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| 36 | #include <assert.h>
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| 37 |
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| 38 | //------------------------------------------------------------------------------
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| 39 | // Local definitions
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| 40 | //------------------------------------------------------------------------------
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| 41 |
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| 42 | /// Key value for the SUPC_MR register.
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| 43 | #define SUPC_KEY ((uint32_t) (0xA5 << 24))
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| 44 |
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| 45 | //------------------------------------------------------------------------------
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| 46 | // Global functions
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| 47 | //------------------------------------------------------------------------------
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| 48 |
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| 49 | #if !defined(__ICCARM__)
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| 50 | __attribute__ ((section (".ramfunc"))) // GCC
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| 51 | #endif
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| 52 | //------------------------------------------------------------------------------
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| 53 | /// Enables the flash power supply with the given wake-up setting.
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| 54 | /// \param time Wake-up time.
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| 55 | //------------------------------------------------------------------------------
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| 56 | void SUPC_EnableFlash( Supc* pSupc, uint32_t dwTime )
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| 57 | {
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| 58 | pSupc->SUPC_FWUTR = dwTime ;
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| 59 | pSupc->SUPC_MR = SUPC_KEY | pSupc->SUPC_MR | AT91C_SUPC_FLASHON ;
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| 60 |
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| 61 | while ((pSupc->SUPC_SR & AT91C_SUPC_FLASHS) != AT91C_SUPC_FLASHS) ;
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| 62 | }
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| 63 |
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| 64 | #if !defined(__ICCARM__)
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| 65 | __attribute__ ((section (".ramfunc"))) // GCC
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| 66 | #endif
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| 67 | //------------------------------------------------------------------------------
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| 68 | /// Disables the flash power supply.
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| 69 | //------------------------------------------------------------------------------
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| 70 | void SUPC_DisableFlash( Supc* pSupc )
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| 71 | {
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| 72 | pSupc->SUPC_MR = SUPC_KEY | (pSupc->SUPC_MR & ~AT91C_SUPC_FLASHON) ;
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| 73 |
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| 74 | while ((pSupc->SUPC_SR & AT91C_SUPC_FLASHS) == AT91C_SUPC_FLASHS) ;
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| 75 | }
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| 76 |
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| 77 | //------------------------------------------------------------------------------
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| 78 | /// Sets the voltage regulator output voltage.
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| 79 | /// \param voltage Voltage to set.
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| 80 | //------------------------------------------------------------------------------
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| 81 | void SUPC_SetVoltageOutput( Supc* pSupc, uint32_t dwVoltage )
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| 82 | {
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| 83 | assert( (voltage & ~AT91C_SUPC_VRVDD) == 0 ) ;
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| 84 |
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| 85 | pSupc->SUPC_MR = SUPC_KEY | (pSupc->SUPC_MR & ~AT91C_SUPC_VRVDD) | dwVoltage ;
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| 86 | }
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| 87 |
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| 88 | //------------------------------------------------------------------------------
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| 89 | /// Puts the voltage regulator in deep mode.
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| 90 | //------------------------------------------------------------------------------
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| 91 | void SUPC_EnableDeepMode( Supc* pSupc )
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| 92 | {
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| 93 | pSupc->SUPC_MR = SUPC_KEY | pSupc->SUPC_MR | AT91C_SUPC_VRDEEP ;
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| 94 | }
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| 95 |
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| 96 | //------------------------------------------------------------------------------
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| 97 | /// Puts the voltage regulator in normal mode.
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| 98 | //------------------------------------------------------------------------------
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| 99 | void SUPC_DisableDeepMode( Supc* pSupc )
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| 100 | {
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| 101 | pSupc->SUPC_MR = SUPC_KEY | (pSupc->SUPC_MR & ~AT91C_SUPC_VRDEEP) ;
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| 102 | }
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| 103 |
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| 104 | //-----------------------------------------------------------------------------
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| 105 | /// Enables the backup SRAM power supply, so its data is saved while the device
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| 106 | /// is in backup mode.
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| 107 | //-----------------------------------------------------------------------------
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| 108 | void SUPC_EnableSram( Supc* pSupc )
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| 109 | {
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| 110 | pSupc->SUPC_MR = SUPC_KEY | pSupc->SUPC_MR | AT91C_SUPC_SRAMON ;
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| 111 | }
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| 112 |
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| 113 | //-----------------------------------------------------------------------------
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| 114 | /// Disables the backup SRAM power supply.
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| 115 | //-----------------------------------------------------------------------------
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| 116 | void SUPC_DisableSram( Supc* pSupc )
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| 117 | {
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| 118 | pSupc->SUPC_MR = SUPC_KEY | (pSupc->SUPC_MR & ~AT91C_SUPC_SRAMON) ;
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| 119 | }
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| 120 |
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| 121 | //-----------------------------------------------------------------------------
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| 122 | /// Enables the RTC power supply.
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| 123 | //-----------------------------------------------------------------------------
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| 124 | void SUPC_EnableRtc( Supc* pSupc )
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| 125 | {
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| 126 | pSupc->SUPC_MR = SUPC_KEY | pSupc->SUPC_MR | AT91C_SUPC_RTCON ;
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| 127 |
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| 128 | while ((pSupc->SUPC_SR & AT91C_SUPC_RTS) != AT91C_SUPC_RTS) ;
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| 129 | }
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| 130 |
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| 131 | //-----------------------------------------------------------------------------
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| 132 | /// Disables the RTC power supply.
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| 133 | //-----------------------------------------------------------------------------
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| 134 | void SUPC_DisableRtc( Supc* pSupc )
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| 135 | {
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| 136 | pSupc->SUPC_MR = SUPC_KEY | (pSupc->SUPC_MR & ~AT91C_SUPC_RTCON) ;
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| 137 |
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| 138 | while ((pSupc->SUPC_SR & AT91C_SUPC_RTS) == AT91C_SUPC_RTS);
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| 139 | }
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| 140 |
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| 141 | //-----------------------------------------------------------------------------
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| 142 | /// Sets the BOD sampling mode (or disables it).
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| 143 | /// \param mode BOD sampling mode.
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| 144 | //-----------------------------------------------------------------------------
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| 145 | void SUPC_SetBodSampling( Supc* pSupc, uint32_t dwMode )
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| 146 | {
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| 147 | assert( (dwMode & ~AT91C_SUPC_BODSMPL) == 0 ) ;
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| 148 |
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| 149 | pSupc->SUPC_BOMR &= ~AT91C_SUPC_BODSMPL;
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| 150 | pSupc->SUPC_BOMR |= dwMode ;
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| 151 | }
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| 152 |
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| 153 | //------------------------------------------------------------------------------
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| 154 | /// Disables the voltage regulator, which makes the device enter backup mode.
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| 155 | //------------------------------------------------------------------------------
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| 156 | void SUPC_DisableVoltageRegulator( Supc* pSupc )
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| 157 | {
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| 158 | pSupc->SUPC_CR = SUPC_KEY | AT91C_SUPC_VROFF ;
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| 159 |
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| 160 | while ( 1 ) ;
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| 161 | }
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| 162 |
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| 163 | //------------------------------------------------------------------------------
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| 164 | /// Shuts the device down so it enters Off mode.
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| 165 | //------------------------------------------------------------------------------
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| 166 | void SUPC_Shutdown( Supc* pSupc )
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| 167 | {
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| 168 | pSupc->SUPC_CR = SUPC_KEY | AT91C_SUPC_SHDW ;
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| 169 |
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| 170 | while (1);
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| 171 | }
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| 172 |
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| 173 | //------------------------------------------------------------------------------
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| 174 | /// Sets the wake-up sources when in backup mode.
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| 175 | /// \param sources Wake-up sources to enable.
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| 176 | //------------------------------------------------------------------------------
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| 177 | void SUPC_SetWakeUpSources( Supc* pSupc, uint32_t dwSources )
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| 178 | {
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| 179 | assert( (dwSources & ~0x0000000B) == 0 ) ;
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| 180 |
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| 181 | pSupc->SUPC_WUMR &= ~0x0000000B;
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| 182 | pSupc->SUPC_WUMR |= dwSources ;
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| 183 | }
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| 184 |
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| 185 | //------------------------------------------------------------------------------
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| 186 | /// Sets the wake-up inputs when in backup mode.
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| 187 | /// \param inputs Wake up inputs to enable.
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| 188 | //------------------------------------------------------------------------------
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| 189 | void SUPC_SetWakeUpInputs( Supc* pSupc, uint32_t dwInputs )
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| 190 | {
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| 191 | assert( (dwInputs & ~0xFFFF) == 0 ) ;
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| 192 |
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| 193 | pSupc->SUPC_WUIR &= ~0xFFFF ;
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| 194 | pSupc->SUPC_WUIR |= dwInputs ;
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| 195 | }
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| 196 |
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