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TARGET_SDT32620B/TOOLCHAIN_IAR/lp.h@172:65be27845400, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 20:53:29 2019 +0000
Revision:
172:65be27845400
Parent:
171:3a7713b1edbc 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 167:84c0a372a020 1 /*******************************************************************************
AnnaBridge 167:84c0a372a020 2 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
AnnaBridge 167:84c0a372a020 3 *
AnnaBridge 167:84c0a372a020 4 * Permission is hereby granted, free of charge, to any person obtaining a
AnnaBridge 167:84c0a372a020 5 * copy of this software and associated documentation files (the "Software"),
AnnaBridge 167:84c0a372a020 6 * to deal in the Software without restriction, including without limitation
AnnaBridge 167:84c0a372a020 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
AnnaBridge 167:84c0a372a020 8 * and/or sell copies of the Software, and to permit persons to whom the
AnnaBridge 167:84c0a372a020 9 * Software is furnished to do so, subject to the following conditions:
AnnaBridge 167:84c0a372a020 10 *
AnnaBridge 167:84c0a372a020 11 * The above copyright notice and this permission notice shall be included
AnnaBridge 167:84c0a372a020 12 * in all copies or substantial portions of the Software.
AnnaBridge 167:84c0a372a020 13 *
AnnaBridge 167:84c0a372a020 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
AnnaBridge 167:84c0a372a020 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
AnnaBridge 167:84c0a372a020 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
AnnaBridge 167:84c0a372a020 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
AnnaBridge 167:84c0a372a020 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
AnnaBridge 167:84c0a372a020 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
AnnaBridge 167:84c0a372a020 20 * OTHER DEALINGS IN THE SOFTWARE.
AnnaBridge 167:84c0a372a020 21 *
AnnaBridge 167:84c0a372a020 22 * Except as contained in this notice, the name of Maxim Integrated
AnnaBridge 167:84c0a372a020 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
AnnaBridge 167:84c0a372a020 24 * Products, Inc. Branding Policy.
AnnaBridge 167:84c0a372a020 25 *
AnnaBridge 167:84c0a372a020 26 * The mere transfer of this software does not imply any licenses
AnnaBridge 167:84c0a372a020 27 * of trade secrets, proprietary technology, copyrights, patents,
AnnaBridge 167:84c0a372a020 28 * trademarks, maskwork rights, or any other form of intellectual
AnnaBridge 167:84c0a372a020 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
AnnaBridge 167:84c0a372a020 30 * ownership rights.
AnnaBridge 167:84c0a372a020 31 *
AnnaBridge 167:84c0a372a020 32 * $Date: 2016-03-21 09:04:59 -0500 (Mon, 21 Mar 2016) $
AnnaBridge 167:84c0a372a020 33 * $Revision: 22006 $
AnnaBridge 167:84c0a372a020 34 *
AnnaBridge 167:84c0a372a020 35 ******************************************************************************/
AnnaBridge 167:84c0a372a020 36
AnnaBridge 167:84c0a372a020 37 /**
AnnaBridge 167:84c0a372a020 38 * @file lp.h
AnnaBridge 167:84c0a372a020 39 * @brief This is the high level API for the Lower Power
AnnaBridge 167:84c0a372a020 40 */
AnnaBridge 167:84c0a372a020 41
AnnaBridge 167:84c0a372a020 42 #ifndef _LP_H_
AnnaBridge 167:84c0a372a020 43 #define _LP_H_
AnnaBridge 167:84c0a372a020 44
AnnaBridge 167:84c0a372a020 45 #include "gpio.h"
AnnaBridge 167:84c0a372a020 46 #include "pwrman_regs.h"
AnnaBridge 167:84c0a372a020 47 #include "pwrseq_regs.h"
AnnaBridge 167:84c0a372a020 48
AnnaBridge 167:84c0a372a020 49 #ifdef __cplusplus
AnnaBridge 167:84c0a372a020 50 extern "C" {
AnnaBridge 167:84c0a372a020 51 #endif
AnnaBridge 167:84c0a372a020 52
AnnaBridge 167:84c0a372a020 53 /***** Definitions *****/
AnnaBridge 167:84c0a372a020 54 /**
AnnaBridge 167:84c0a372a020 55 * @brief Enumerations for pull-up and pull-downs
AnnaBridge 167:84c0a372a020 56 *
AnnaBridge 167:84c0a372a020 57 */
AnnaBridge 167:84c0a372a020 58 typedef enum {
AnnaBridge 167:84c0a372a020 59 LP_WEAK_PULL_DOWN = -1,
AnnaBridge 167:84c0a372a020 60 LP_NO_PULL = 0,
AnnaBridge 167:84c0a372a020 61 LP_WEAK_PULL_UP = 1
AnnaBridge 167:84c0a372a020 62 }
AnnaBridge 167:84c0a372a020 63 lp_pu_pd_select_t;
AnnaBridge 167:84c0a372a020 64
AnnaBridge 167:84c0a372a020 65 /***** Function Prototypes *****/
AnnaBridge 167:84c0a372a020 66
AnnaBridge 167:84c0a372a020 67 /**
AnnaBridge 167:84c0a372a020 68 * @brief Gets the first boot flag
AnnaBridge 167:84c0a372a020 69 *
AnnaBridge 167:84c0a372a020 70 * @returns 0 if FIRST_BOOT was not set, or 1 if FIRST_BOOT was set
AnnaBridge 167:84c0a372a020 71 */
AnnaBridge 167:84c0a372a020 72 __STATIC_INLINE unsigned int LP_IsFirstBoot()
AnnaBridge 167:84c0a372a020 73 {
AnnaBridge 167:84c0a372a020 74 return ((MXC_PWRSEQ->reg0 & MXC_F_PWRSEQ_REG0_PWR_FIRST_BOOT) >> MXC_F_PWRSEQ_REG0_PWR_FIRST_BOOT_POS);
AnnaBridge 167:84c0a372a020 75 }
AnnaBridge 167:84c0a372a020 76
AnnaBridge 167:84c0a372a020 77 /**
AnnaBridge 167:84c0a372a020 78 * @brief Clears the first boot flag
AnnaBridge 167:84c0a372a020 79 *
AnnaBridge 167:84c0a372a020 80 */
AnnaBridge 167:84c0a372a020 81 __STATIC_INLINE void LP_ClearFirstBoot()
AnnaBridge 167:84c0a372a020 82 {
AnnaBridge 167:84c0a372a020 83 MXC_PWRSEQ->reg0 &= ~MXC_F_PWRSEQ_REG0_PWR_FIRST_BOOT;
AnnaBridge 167:84c0a372a020 84 }
AnnaBridge 167:84c0a372a020 85
AnnaBridge 167:84c0a372a020 86 /**
AnnaBridge 167:84c0a372a020 87 * @brief Determines of program woke up from LP0
AnnaBridge 167:84c0a372a020 88 *
AnnaBridge 167:84c0a372a020 89 * @returns 0 if not woken up from LP0, or 1 if woken from LP0
AnnaBridge 167:84c0a372a020 90 */
AnnaBridge 167:84c0a372a020 91 __STATIC_INLINE unsigned int LP_IsLP0WakeUp()
AnnaBridge 167:84c0a372a020 92 {
AnnaBridge 167:84c0a372a020 93 //POR should be set and first boot clear
AnnaBridge 167:84c0a372a020 94 if((MXC_PWRMAN->pwr_rst_ctrl & MXC_F_PWRMAN_PWR_RST_CTRL_POR) &&
AnnaBridge 167:84c0a372a020 95 ((MXC_PWRSEQ->reg0 & MXC_F_PWRSEQ_REG0_PWR_FIRST_BOOT) == 0))
AnnaBridge 167:84c0a372a020 96 return 1;
AnnaBridge 167:84c0a372a020 97 else
AnnaBridge 167:84c0a372a020 98 return 0;
AnnaBridge 167:84c0a372a020 99
AnnaBridge 167:84c0a372a020 100 }
AnnaBridge 167:84c0a372a020 101
AnnaBridge 167:84c0a372a020 102 __STATIC_INLINE unsigned int LP_GetWakeUpFlags(void)
AnnaBridge 167:84c0a372a020 103 {
AnnaBridge 167:84c0a372a020 104 return MXC_PWRSEQ->flags;
AnnaBridge 167:84c0a372a020 105 }
AnnaBridge 167:84c0a372a020 106 /**
AnnaBridge 167:84c0a372a020 107 * @brief Clear ALL wake-up configuration on all pins. Disables wake-up entirely.
AnnaBridge 167:84c0a372a020 108 */
AnnaBridge 167:84c0a372a020 109 void LP_ClearWakeUpConfig(void);
AnnaBridge 167:84c0a372a020 110
AnnaBridge 167:84c0a372a020 111 /**
AnnaBridge 167:84c0a372a020 112 * @brief Read wake-up flags, clear flags, and return to caller.
AnnaBridge 167:84c0a372a020 113 * @returns Wake-up flags from Power Sequencer
AnnaBridge 167:84c0a372a020 114 */
AnnaBridge 167:84c0a372a020 115 unsigned int LP_ClearWakeUpFlags(void);
AnnaBridge 167:84c0a372a020 116
AnnaBridge 167:84c0a372a020 117 /**
AnnaBridge 167:84c0a372a020 118 * @brief This function configures one GPIO pin to wake the processor from LP0 or LP1.
AnnaBridge 167:84c0a372a020 119 * It is not used for LP2 wake-up, as normal GPIO interrupt processing is active in that mode.
AnnaBridge 167:84c0a372a020 120 * @param gpio GPIO pointer describing the port and pin for selected wake-up source
AnnaBridge 167:84c0a372a020 121 * @param act_high If non-zero, the signal is configured for active high wake-up. Otherwise, active low.
AnnaBridge 167:84c0a372a020 122 * @param wk_pu_pd Selection for the 1 Meg ohm pull-up or pull-down on this pin, see #lp_pu_pd_select_t
AnnaBridge 167:84c0a372a020 123 * @returns #E_NO_ERROR on success, error if unsuccessful.
AnnaBridge 167:84c0a372a020 124 */
AnnaBridge 167:84c0a372a020 125 int LP_ConfigGPIOWakeUpDetect(const gpio_cfg_t *gpio, unsigned int act_high, lp_pu_pd_select_t wk_pu_pd);
AnnaBridge 167:84c0a372a020 126
AnnaBridge 167:84c0a372a020 127 /**
AnnaBridge 167:84c0a372a020 128 * @brief Clear the wake-up configuration on one specific GPIO pin
AnnaBridge 167:84c0a372a020 129 * @param gpio GPIO pointer describing the port and pin for selected wake-up source
AnnaBridge 167:84c0a372a020 130 * @returns #E_NO_ERROR on success, error if unsuccessful.
AnnaBridge 167:84c0a372a020 131 */
AnnaBridge 167:84c0a372a020 132 int LP_ClearGPIOWakeUpDetect(const gpio_cfg_t *gpio);
AnnaBridge 167:84c0a372a020 133
AnnaBridge 167:84c0a372a020 134 /**
AnnaBridge 167:84c0a372a020 135 * @brief Check if a specific gpio triggered the wake up
AnnaBridge 167:84c0a372a020 136 * @param gpio GPIO pointer describing the port and pin(s)
AnnaBridge 167:84c0a372a020 137 * @returns 0 = gpio passed in did not trigger a wake up
AnnaBridge 167:84c0a372a020 138 * nonzero = at least one of the gpio passed in triggered a wake up
AnnaBridge 167:84c0a372a020 139 * the bit set represents which pin is the wake up source
AnnaBridge 167:84c0a372a020 140 */
AnnaBridge 167:84c0a372a020 141 int LP_IsGPIOWakeUpSource(const gpio_cfg_t *gpio);
AnnaBridge 167:84c0a372a020 142
AnnaBridge 167:84c0a372a020 143 /**
AnnaBridge 167:84c0a372a020 144 * @brief Wake on USB plug or unplug
AnnaBridge 167:84c0a372a020 145 * @param plug_en set to 1 to enable wake-up when USB VBUS is detected
AnnaBridge 167:84c0a372a020 146 * @param unplug_en set to 1 to enable wake-up when USB VBUS disappears
AnnaBridge 167:84c0a372a020 147 * @returns #E_NO_ERROR on success, error if unsuccessful.
AnnaBridge 167:84c0a372a020 148 */
AnnaBridge 167:84c0a372a020 149 int LP_ConfigUSBWakeUp(unsigned int plug_en, unsigned int unplug_en);
AnnaBridge 167:84c0a372a020 150
AnnaBridge 167:84c0a372a020 151 /**
AnnaBridge 167:84c0a372a020 152 * @brief Wake on any enabled event signal from RTC
AnnaBridge 167:84c0a372a020 153 * @param comp0_en set to 1 to enable wake-up when RTC Comparison 0 is set
AnnaBridge 167:84c0a372a020 154 * @param comp1_en set to 1 to enable wake-up when RTC Comparison 1 is set
AnnaBridge 167:84c0a372a020 155 * @param prescale_cmp_en set to 1 to enable wake-up when RTC Prescaler Compare is set
AnnaBridge 167:84c0a372a020 156 * @param rollover_en set to 1 to enable wake-up when RTC Roll-over is set
AnnaBridge 167:84c0a372a020 157 * @returns #E_NO_ERROR on success, error if unsuccessful.
AnnaBridge 167:84c0a372a020 158 */
AnnaBridge 167:84c0a372a020 159 int LP_ConfigRTCWakeUp(unsigned int comp0_en, unsigned int comp1_en, unsigned int prescale_cmp_en, unsigned int rollover_en);
AnnaBridge 167:84c0a372a020 160
AnnaBridge 167:84c0a372a020 161 /**
AnnaBridge 167:84c0a372a020 162 * @brief Enter LP2 power-saving mode
AnnaBridge 167:84c0a372a020 163 * @returns #E_NO_ERROR on success, error if unsuccessful.
AnnaBridge 167:84c0a372a020 164 */
AnnaBridge 167:84c0a372a020 165 int LP_EnterLP2(void);
AnnaBridge 167:84c0a372a020 166
AnnaBridge 167:84c0a372a020 167 /**
AnnaBridge 167:84c0a372a020 168 * @brief Enter LP1 mode, which saves CPU state and SRAM. Execution resumes after this call.
AnnaBridge 167:84c0a372a020 169 * @note Interrupts should be globally disabled before calling this function.
AnnaBridge 167:84c0a372a020 170 * @returns #E_NO_ERROR on success, error if unsuccessful.
AnnaBridge 167:84c0a372a020 171 */
AnnaBridge 167:84c0a372a020 172 int LP_EnterLP1(void);
AnnaBridge 167:84c0a372a020 173
AnnaBridge 167:84c0a372a020 174 /**
AnnaBridge 167:84c0a372a020 175 * @brief Enter the lowest-possible power mode, known as LP0. SRAM contents are lost.
AnnaBridge 167:84c0a372a020 176 * Waking up from LP0 is like a system reset. This function does not return.
AnnaBridge 167:84c0a372a020 177 * @note Interrupts are globally disabled upon entering this function.
AnnaBridge 167:84c0a372a020 178 */
AnnaBridge 167:84c0a372a020 179 void LP_EnterLP0(void);
AnnaBridge 167:84c0a372a020 180
AnnaBridge 167:84c0a372a020 181 #ifdef __cplusplus
AnnaBridge 167:84c0a372a020 182 }
AnnaBridge 167:84c0a372a020 183 #endif
AnnaBridge 167:84c0a372a020 184
AnnaBridge 167:84c0a372a020 185 #endif /* _LP_H_ */