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targets/cmsis/TARGET_STM/TARGET_DISCO_L053C8/stm32l0xx_hal_pwr.c@376:cb4d9db17537, 2014-10-31 (annotated)
- Committer:
- mbed_official
- Date:
- Fri Oct 31 11:00:10 2014 +0000
- Revision:
- 376:cb4d9db17537
Synchronized with git revision 07b49da75eac883fc8916d3d6b6962664b8db29e
Full URL: https://github.com/mbedmicro/mbed/commit/07b49da75eac883fc8916d3d6b6962664b8db29e/
Targets: DISCO_L053C8 - new platform - STM32L0 Discovery board
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed_official | 376:cb4d9db17537 | 1 | /** |
| mbed_official | 376:cb4d9db17537 | 2 | ****************************************************************************** |
| mbed_official | 376:cb4d9db17537 | 3 | * @file stm32l0xx_hal_pwr.c |
| mbed_official | 376:cb4d9db17537 | 4 | * @author MCD Application Team |
| mbed_official | 376:cb4d9db17537 | 5 | * @version V1.1.0 |
| mbed_official | 376:cb4d9db17537 | 6 | * @date 18-June-2014 |
| mbed_official | 376:cb4d9db17537 | 7 | * @brief PWR HAL module driver. |
| mbed_official | 376:cb4d9db17537 | 8 | * |
| mbed_official | 376:cb4d9db17537 | 9 | * This file provides firmware functions to manage the following |
| mbed_official | 376:cb4d9db17537 | 10 | * functionalities of the Power Controller (PWR) peripheral: |
| mbed_official | 376:cb4d9db17537 | 11 | * + Initialization/de-initialization functions |
| mbed_official | 376:cb4d9db17537 | 12 | * + Peripheral Control functions |
| mbed_official | 376:cb4d9db17537 | 13 | * |
| mbed_official | 376:cb4d9db17537 | 14 | @verbatim |
| mbed_official | 376:cb4d9db17537 | 15 | ****************************************************************************** |
| mbed_official | 376:cb4d9db17537 | 16 | * @attention |
| mbed_official | 376:cb4d9db17537 | 17 | * |
| mbed_official | 376:cb4d9db17537 | 18 | * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> |
| mbed_official | 376:cb4d9db17537 | 19 | * |
| mbed_official | 376:cb4d9db17537 | 20 | * Redistribution and use in source and binary forms, with or without modification, |
| mbed_official | 376:cb4d9db17537 | 21 | * are permitted provided that the following conditions are met: |
| mbed_official | 376:cb4d9db17537 | 22 | * 1. Redistributions of source code must retain the above copyright notice, |
| mbed_official | 376:cb4d9db17537 | 23 | * this list of conditions and the following disclaimer. |
| mbed_official | 376:cb4d9db17537 | 24 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| mbed_official | 376:cb4d9db17537 | 25 | * this list of conditions and the following disclaimer in the documentation |
| mbed_official | 376:cb4d9db17537 | 26 | * and/or other materials provided with the distribution. |
| mbed_official | 376:cb4d9db17537 | 27 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| mbed_official | 376:cb4d9db17537 | 28 | * may be used to endorse or promote products derived from this software |
| mbed_official | 376:cb4d9db17537 | 29 | * without specific prior written permission. |
| mbed_official | 376:cb4d9db17537 | 30 | * |
| mbed_official | 376:cb4d9db17537 | 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| mbed_official | 376:cb4d9db17537 | 32 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| mbed_official | 376:cb4d9db17537 | 33 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| mbed_official | 376:cb4d9db17537 | 34 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| mbed_official | 376:cb4d9db17537 | 35 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| mbed_official | 376:cb4d9db17537 | 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| mbed_official | 376:cb4d9db17537 | 37 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| mbed_official | 376:cb4d9db17537 | 38 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| mbed_official | 376:cb4d9db17537 | 39 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| mbed_official | 376:cb4d9db17537 | 40 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| mbed_official | 376:cb4d9db17537 | 41 | * |
| mbed_official | 376:cb4d9db17537 | 42 | ****************************************************************************** |
| mbed_official | 376:cb4d9db17537 | 43 | */ |
| mbed_official | 376:cb4d9db17537 | 44 | |
| mbed_official | 376:cb4d9db17537 | 45 | /* Includes ------------------------------------------------------------------*/ |
| mbed_official | 376:cb4d9db17537 | 46 | #include "stm32l0xx_hal.h" |
| mbed_official | 376:cb4d9db17537 | 47 | |
| mbed_official | 376:cb4d9db17537 | 48 | /** @addtogroup STM32L0xx_HAL_Driver |
| mbed_official | 376:cb4d9db17537 | 49 | * @{ |
| mbed_official | 376:cb4d9db17537 | 50 | */ |
| mbed_official | 376:cb4d9db17537 | 51 | |
| mbed_official | 376:cb4d9db17537 | 52 | /** @defgroup PWR |
| mbed_official | 376:cb4d9db17537 | 53 | * @brief PWR HAL module driver |
| mbed_official | 376:cb4d9db17537 | 54 | * @{ |
| mbed_official | 376:cb4d9db17537 | 55 | */ |
| mbed_official | 376:cb4d9db17537 | 56 | |
| mbed_official | 376:cb4d9db17537 | 57 | #ifdef HAL_PWR_MODULE_ENABLED |
| mbed_official | 376:cb4d9db17537 | 58 | |
| mbed_official | 376:cb4d9db17537 | 59 | /* Private typedef -----------------------------------------------------------*/ |
| mbed_official | 376:cb4d9db17537 | 60 | /* Private define ------------------------------------------------------------*/ |
| mbed_official | 376:cb4d9db17537 | 61 | /* Private macro -------------------------------------------------------------*/ |
| mbed_official | 376:cb4d9db17537 | 62 | /* Private variables ---------------------------------------------------------*/ |
| mbed_official | 376:cb4d9db17537 | 63 | /* Private function prototypes -----------------------------------------------*/ |
| mbed_official | 376:cb4d9db17537 | 64 | /* Private functions ---------------------------------------------------------*/ |
| mbed_official | 376:cb4d9db17537 | 65 | |
| mbed_official | 376:cb4d9db17537 | 66 | /** @defgroup PWR_Private_Functions |
| mbed_official | 376:cb4d9db17537 | 67 | * @{ |
| mbed_official | 376:cb4d9db17537 | 68 | */ |
| mbed_official | 376:cb4d9db17537 | 69 | |
| mbed_official | 376:cb4d9db17537 | 70 | /** @defgroup PWR_Group1 Initialization and De-initialization functions |
| mbed_official | 376:cb4d9db17537 | 71 | * @brief Initialization and Configuration functions |
| mbed_official | 376:cb4d9db17537 | 72 | * |
| mbed_official | 376:cb4d9db17537 | 73 | @verbatim |
| mbed_official | 376:cb4d9db17537 | 74 | =============================================================================== |
| mbed_official | 376:cb4d9db17537 | 75 | ##### Initialization and de-initialization functions ##### |
| mbed_official | 376:cb4d9db17537 | 76 | =============================================================================== |
| mbed_official | 376:cb4d9db17537 | 77 | [..] |
| mbed_official | 376:cb4d9db17537 | 78 | After reset, the backup domain (RTC registers, RTC backup data |
| mbed_official | 376:cb4d9db17537 | 79 | registers) is protected against possible unwanted |
| mbed_official | 376:cb4d9db17537 | 80 | write accesses. |
| mbed_official | 376:cb4d9db17537 | 81 | To enable access to the RTC Domain and RTC registers, proceed as follows: |
| mbed_official | 376:cb4d9db17537 | 82 | (+) Enable the Power Controller (PWR) APB1 interface clock using the |
| mbed_official | 376:cb4d9db17537 | 83 | __PWR_CLK_ENABLE() macro. |
| mbed_official | 376:cb4d9db17537 | 84 | (+) Enable access to RTC domain using the HAL_PWR_EnableBkUpAccess() function. |
| mbed_official | 376:cb4d9db17537 | 85 | |
| mbed_official | 376:cb4d9db17537 | 86 | @endverbatim |
| mbed_official | 376:cb4d9db17537 | 87 | * @{ |
| mbed_official | 376:cb4d9db17537 | 88 | */ |
| mbed_official | 376:cb4d9db17537 | 89 | |
| mbed_official | 376:cb4d9db17537 | 90 | /** |
| mbed_official | 376:cb4d9db17537 | 91 | * @brief Deinitializes the HAL PWR peripheral registers to their default reset values. |
| mbed_official | 376:cb4d9db17537 | 92 | * @param None |
| mbed_official | 376:cb4d9db17537 | 93 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 94 | */ |
| mbed_official | 376:cb4d9db17537 | 95 | void HAL_PWR_DeInit(void) |
| mbed_official | 376:cb4d9db17537 | 96 | { |
| mbed_official | 376:cb4d9db17537 | 97 | __PWR_FORCE_RESET(); |
| mbed_official | 376:cb4d9db17537 | 98 | __PWR_RELEASE_RESET(); |
| mbed_official | 376:cb4d9db17537 | 99 | } |
| mbed_official | 376:cb4d9db17537 | 100 | |
| mbed_official | 376:cb4d9db17537 | 101 | /** |
| mbed_official | 376:cb4d9db17537 | 102 | * @brief Enables access to the backup domain (RTC registers, RTC |
| mbed_official | 376:cb4d9db17537 | 103 | * backup data registers ). |
| mbed_official | 376:cb4d9db17537 | 104 | * @note If the HSE divided by 2, 4, 8 or 16 is used as the RTC clock, the |
| mbed_official | 376:cb4d9db17537 | 105 | * Backup Domain Access should be kept enabled. |
| mbed_official | 376:cb4d9db17537 | 106 | * @param None |
| mbed_official | 376:cb4d9db17537 | 107 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 108 | */ |
| mbed_official | 376:cb4d9db17537 | 109 | void HAL_PWR_EnableBkUpAccess(void) |
| mbed_official | 376:cb4d9db17537 | 110 | { |
| mbed_official | 376:cb4d9db17537 | 111 | /* Enable access to RTC and backup registers */ |
| mbed_official | 376:cb4d9db17537 | 112 | PWR->CR |= PWR_CR_DBP; |
| mbed_official | 376:cb4d9db17537 | 113 | } |
| mbed_official | 376:cb4d9db17537 | 114 | |
| mbed_official | 376:cb4d9db17537 | 115 | /** |
| mbed_official | 376:cb4d9db17537 | 116 | * @brief Disables access to the backup domain (RTC registers, RTC |
| mbed_official | 376:cb4d9db17537 | 117 | * backup data registers). |
| mbed_official | 376:cb4d9db17537 | 118 | * @note If the HSE divided by 2, 4, 8 or 16 is used as the RTC clock, the |
| mbed_official | 376:cb4d9db17537 | 119 | * Backup Domain Access should be kept enabled. |
| mbed_official | 376:cb4d9db17537 | 120 | * @param None |
| mbed_official | 376:cb4d9db17537 | 121 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 122 | */ |
| mbed_official | 376:cb4d9db17537 | 123 | void HAL_PWR_DisableBkUpAccess(void) |
| mbed_official | 376:cb4d9db17537 | 124 | { |
| mbed_official | 376:cb4d9db17537 | 125 | /* Disable access to RTC and backup registers */ |
| mbed_official | 376:cb4d9db17537 | 126 | PWR->CR &= (uint32_t)~((uint32_t)PWR_CR_DBP); |
| mbed_official | 376:cb4d9db17537 | 127 | } |
| mbed_official | 376:cb4d9db17537 | 128 | |
| mbed_official | 376:cb4d9db17537 | 129 | /** |
| mbed_official | 376:cb4d9db17537 | 130 | * @} |
| mbed_official | 376:cb4d9db17537 | 131 | */ |
| mbed_official | 376:cb4d9db17537 | 132 | |
| mbed_official | 376:cb4d9db17537 | 133 | /** @defgroup PWR_Group2 Peripheral Control functions |
| mbed_official | 376:cb4d9db17537 | 134 | * @brief Low Power modes configuration functions |
| mbed_official | 376:cb4d9db17537 | 135 | * |
| mbed_official | 376:cb4d9db17537 | 136 | @verbatim |
| mbed_official | 376:cb4d9db17537 | 137 | |
| mbed_official | 376:cb4d9db17537 | 138 | =============================================================================== |
| mbed_official | 376:cb4d9db17537 | 139 | ##### Peripheral Control functions ##### |
| mbed_official | 376:cb4d9db17537 | 140 | =============================================================================== |
| mbed_official | 376:cb4d9db17537 | 141 | |
| mbed_official | 376:cb4d9db17537 | 142 | *** PVD configuration *** |
| mbed_official | 376:cb4d9db17537 | 143 | ========================= |
| mbed_official | 376:cb4d9db17537 | 144 | [..] |
| mbed_official | 376:cb4d9db17537 | 145 | (+) The PVD is used to monitor the VDD power supply by comparing it to a |
| mbed_official | 376:cb4d9db17537 | 146 | threshold selected by the PVD Level (PLS[2:0] bits in the PWR_CR). |
| mbed_official | 376:cb4d9db17537 | 147 | (+) The PVD can use an external input analog voltage (PVD_IN) which is compared |
| mbed_official | 376:cb4d9db17537 | 148 | internally to VREFINT. The PVD_IN (PB7) has to be configured in Analog mode |
| mbed_official | 376:cb4d9db17537 | 149 | when PWR_PVDLevel_7 is selected (PLS[2:0] = 111). |
| mbed_official | 376:cb4d9db17537 | 150 | |
| mbed_official | 376:cb4d9db17537 | 151 | (+) A PVDO flag is available to indicate if VDD/VDDA is higher or lower |
| mbed_official | 376:cb4d9db17537 | 152 | than the PVD threshold. This event is internally connected to the EXTI |
| mbed_official | 376:cb4d9db17537 | 153 | line16 and can generate an interrupt if enabled. This is done through |
| mbed_official | 376:cb4d9db17537 | 154 | __HAL_PVD_EXTI_ENABLE_IT() macro. |
| mbed_official | 376:cb4d9db17537 | 155 | (+) The PVD is stopped in Standby mode. |
| mbed_official | 376:cb4d9db17537 | 156 | |
| mbed_official | 376:cb4d9db17537 | 157 | *** WakeUp pin configuration *** |
| mbed_official | 376:cb4d9db17537 | 158 | ================================ |
| mbed_official | 376:cb4d9db17537 | 159 | [..] |
| mbed_official | 376:cb4d9db17537 | 160 | (+) WakeUp pin is used to wake up the system from Standby mode. This pin is |
| mbed_official | 376:cb4d9db17537 | 161 | forced in input pull-down configuration and is active on rising edges. |
| mbed_official | 376:cb4d9db17537 | 162 | (+) There are two WakeUp pins: |
| mbed_official | 376:cb4d9db17537 | 163 | WakeUp Pin 1 on PA.00. |
| mbed_official | 376:cb4d9db17537 | 164 | WakeUp Pin 2 on PC.13. |
| mbed_official | 376:cb4d9db17537 | 165 | |
| mbed_official | 376:cb4d9db17537 | 166 | [..] |
| mbed_official | 376:cb4d9db17537 | 167 | *** Main and Backup Regulators configuration *** |
| mbed_official | 376:cb4d9db17537 | 168 | ================================================ |
| mbed_official | 376:cb4d9db17537 | 169 | |
| mbed_official | 376:cb4d9db17537 | 170 | (+) The main internal regulator can be configured to have a tradeoff between |
| mbed_official | 376:cb4d9db17537 | 171 | performance and power consumption when the device does not operate at |
| mbed_official | 376:cb4d9db17537 | 172 | the maximum frequency. This is done through __HAL_PWR_VOLTAGESCALING_CONFIG() |
| mbed_official | 376:cb4d9db17537 | 173 | macro which configure VOS bit in PWR_CR register: |
| mbed_official | 376:cb4d9db17537 | 174 | (++) When this bit is set (Regulator voltage output Scale 1 mode selected) |
| mbed_official | 376:cb4d9db17537 | 175 | the System frequency can go up to 32 MHz. |
| mbed_official | 376:cb4d9db17537 | 176 | (++) When this bit is reset (Regulator voltage output Scale 2 mode selected) |
| mbed_official | 376:cb4d9db17537 | 177 | the System frequency can go up to 16 MHz. |
| mbed_official | 376:cb4d9db17537 | 178 | (++) When this bit is reset (Regulator voltage output Scale 3 mode selected) |
| mbed_official | 376:cb4d9db17537 | 179 | the System frequency can go up to 4.2 MHz. |
| mbed_official | 376:cb4d9db17537 | 180 | |
| mbed_official | 376:cb4d9db17537 | 181 | Refer to the datasheets for more details. |
| mbed_official | 376:cb4d9db17537 | 182 | |
| mbed_official | 376:cb4d9db17537 | 183 | *** Low Power modes configuration *** |
| mbed_official | 376:cb4d9db17537 | 184 | ===================================== |
| mbed_official | 376:cb4d9db17537 | 185 | [..] |
| mbed_official | 376:cb4d9db17537 | 186 | The device features 5 low-power modes: |
| mbed_official | 376:cb4d9db17537 | 187 | (+) Low power run mode: regulator in low power mode, limited clock frequency, |
| mbed_official | 376:cb4d9db17537 | 188 | limited number of peripherals running. |
| mbed_official | 376:cb4d9db17537 | 189 | (+) Sleep mode: Cortex-M0+ core stopped, peripherals kept running. |
| mbed_official | 376:cb4d9db17537 | 190 | (+) Low power sleep mode: Cortex-M0+ core stopped, limited clock frequency, |
| mbed_official | 376:cb4d9db17537 | 191 | limited number of peripherals running, regulator in low power mode. |
| mbed_official | 376:cb4d9db17537 | 192 | (+) Stop mode: All clocks are stopped, regulator running, regulator in low power mode. |
| mbed_official | 376:cb4d9db17537 | 193 | (+) Standby mode: VCORE domain powered off |
| mbed_official | 376:cb4d9db17537 | 194 | |
| mbed_official | 376:cb4d9db17537 | 195 | *** Low power run mode *** |
| mbed_official | 376:cb4d9db17537 | 196 | ========================= |
| mbed_official | 376:cb4d9db17537 | 197 | [..] |
| mbed_official | 376:cb4d9db17537 | 198 | To further reduce the consumption when the system is in Run mode, the regulator can be |
| mbed_official | 376:cb4d9db17537 | 199 | configured in low power mode. In this mode, the system frequency should not exceed |
| mbed_official | 376:cb4d9db17537 | 200 | MSI frequency range1. |
| mbed_official | 376:cb4d9db17537 | 201 | In Low power run mode, all I/O pins keep the same state as in Run mode. |
| mbed_official | 376:cb4d9db17537 | 202 | |
| mbed_official | 376:cb4d9db17537 | 203 | (+) Entry: |
| mbed_official | 376:cb4d9db17537 | 204 | (++) VCORE in range2 |
| mbed_official | 376:cb4d9db17537 | 205 | (++) Decrease the system frequency tonot exceed the frequency of MSI frequency range1. |
| mbed_official | 376:cb4d9db17537 | 206 | (++) The regulator is forced in low power mode using the HAL_PWREx_EnableLowPowerRunMode() |
| mbed_official | 376:cb4d9db17537 | 207 | function. |
| mbed_official | 376:cb4d9db17537 | 208 | (+) Exit: |
| mbed_official | 376:cb4d9db17537 | 209 | (++) The regulator is forced in Main regulator mode using the HAL_PWREx_DisableLowPowerRunMode() |
| mbed_official | 376:cb4d9db17537 | 210 | function. |
| mbed_official | 376:cb4d9db17537 | 211 | (++) Increase the system frequency if needed. |
| mbed_official | 376:cb4d9db17537 | 212 | |
| mbed_official | 376:cb4d9db17537 | 213 | *** Sleep mode *** |
| mbed_official | 376:cb4d9db17537 | 214 | ================== |
| mbed_official | 376:cb4d9db17537 | 215 | [..] |
| mbed_official | 376:cb4d9db17537 | 216 | (+) Entry: |
| mbed_official | 376:cb4d9db17537 | 217 | The Sleep mode is entered by using the HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFx) |
| mbed_official | 376:cb4d9db17537 | 218 | functions with |
| mbed_official | 376:cb4d9db17537 | 219 | (++) PWR_SLEEPENTRY_WFI: enter SLEEP mode with WFI instruction |
| mbed_official | 376:cb4d9db17537 | 220 | (++) PWR_SLEEPENTRY_WFE: enter SLEEP mode with WFE instruction |
| mbed_official | 376:cb4d9db17537 | 221 | |
| mbed_official | 376:cb4d9db17537 | 222 | (+) Exit: |
| mbed_official | 376:cb4d9db17537 | 223 | (++) Any peripheral interrupt acknowledged by the nested vectored interrupt |
| mbed_official | 376:cb4d9db17537 | 224 | controller (NVIC) can wake up the device from Sleep mode. |
| mbed_official | 376:cb4d9db17537 | 225 | |
| mbed_official | 376:cb4d9db17537 | 226 | *** Low power sleep mode *** |
| mbed_official | 376:cb4d9db17537 | 227 | ============================ |
| mbed_official | 376:cb4d9db17537 | 228 | [..] |
| mbed_official | 376:cb4d9db17537 | 229 | (+) Entry: |
| mbed_official | 376:cb4d9db17537 | 230 | The Low power sleep mode is entered by using the HAL_PWR_EnterSLEEPMode(PWR_LOWPOWERREGULATOR_ON, PWR_SLEEPENTRY_WFx) |
| mbed_official | 376:cb4d9db17537 | 231 | functions with |
| mbed_official | 376:cb4d9db17537 | 232 | (++) PWR_SLEEPENTRY_WFI: enter SLEEP mode with WFI instruction |
| mbed_official | 376:cb4d9db17537 | 233 | (++) PWR_SLEEPENTRY_WFE: enter SLEEP mode with WFE instruction |
| mbed_official | 376:cb4d9db17537 | 234 | (+) The Flash memory can be switched off by using the control bits (SLEEP_PD in the FLASH_ACR register. |
| mbed_official | 376:cb4d9db17537 | 235 | This reduces power consumption but increases the wake-up time. |
| mbed_official | 376:cb4d9db17537 | 236 | |
| mbed_official | 376:cb4d9db17537 | 237 | (+) Exit: |
| mbed_official | 376:cb4d9db17537 | 238 | (++) If the WFI instruction was used to enter Low power sleep mode, any peripheral interrupt |
| mbed_official | 376:cb4d9db17537 | 239 | acknowledged by the nested vectored interrupt controller (NVIC) can wake up the device |
| mbed_official | 376:cb4d9db17537 | 240 | from Low power sleep mode. If the WFE instruction was used to enter Low power sleep mode, |
| mbed_official | 376:cb4d9db17537 | 241 | the MCU exits Sleep mode as soon as an event occurs. |
| mbed_official | 376:cb4d9db17537 | 242 | |
| mbed_official | 376:cb4d9db17537 | 243 | *** Stop mode *** |
| mbed_official | 376:cb4d9db17537 | 244 | ================= |
| mbed_official | 376:cb4d9db17537 | 245 | [..] |
| mbed_official | 376:cb4d9db17537 | 246 | The Stop mode is based on the Cortex-M0+ deepsleep mode combined with peripheral |
| mbed_official | 376:cb4d9db17537 | 247 | clock gating. The voltage regulator can be configured either in normal or low-power mode. |
| mbed_official | 376:cb4d9db17537 | 248 | In Stop mode, all clocks in the VCORE domain are stopped, the PLL, the MSI, the HSI and |
| mbed_official | 376:cb4d9db17537 | 249 | the HSE RC oscillators are disabled. Internal SRAM and register contents are preserved. |
| mbed_official | 376:cb4d9db17537 | 250 | To get the lowest consumption in Stop mode, the internal Flash memory also enters low |
| mbed_official | 376:cb4d9db17537 | 251 | power mode. When the Flash memory is in power-down mode, an additional startup delay is |
| mbed_official | 376:cb4d9db17537 | 252 | incurred when waking up from Stop mode. |
| mbed_official | 376:cb4d9db17537 | 253 | To minimize the consumption In Stop mode, VREFINT, the BOR, PVD, and temperature |
| mbed_official | 376:cb4d9db17537 | 254 | sensor can be switched off before entering Stop mode. They can be switched on again by |
| mbed_official | 376:cb4d9db17537 | 255 | software after exiting Stop mode using the ULP bit in the PWR_CR register. |
| mbed_official | 376:cb4d9db17537 | 256 | In Stop mode, all I/O pins keep the same state as in Run mode. |
| mbed_official | 376:cb4d9db17537 | 257 | |
| mbed_official | 376:cb4d9db17537 | 258 | (+) Entry: |
| mbed_official | 376:cb4d9db17537 | 259 | The Stop mode is entered using the HAL_PWR_EnterSTOPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI ) |
| mbed_official | 376:cb4d9db17537 | 260 | function with: |
| mbed_official | 376:cb4d9db17537 | 261 | (++) Main regulator ON. |
| mbed_official | 376:cb4d9db17537 | 262 | (++) Low Power regulator ON. |
| mbed_official | 376:cb4d9db17537 | 263 | (++) PWR_SLEEPENTRY_WFI: enter SLEEP mode with WFI instruction |
| mbed_official | 376:cb4d9db17537 | 264 | (++) PWR_SLEEPENTRY_WFE: enter SLEEP mode with WFE instruction |
| mbed_official | 376:cb4d9db17537 | 265 | (+) Exit: |
| mbed_official | 376:cb4d9db17537 | 266 | (++) By issuing an interrupt or a wakeup event, the MSI or HSI16 RC |
| mbed_official | 376:cb4d9db17537 | 267 | oscillator is selected as system clock depending the bit STOPWUCK in the RCC_CFGR |
| mbed_official | 376:cb4d9db17537 | 268 | register |
| mbed_official | 376:cb4d9db17537 | 269 | |
| mbed_official | 376:cb4d9db17537 | 270 | *** Standby mode *** |
| mbed_official | 376:cb4d9db17537 | 271 | ==================== |
| mbed_official | 376:cb4d9db17537 | 272 | [..] |
| mbed_official | 376:cb4d9db17537 | 273 | The Standby mode allows to achieve the lowest power consumption. It is based on the |
| mbed_official | 376:cb4d9db17537 | 274 | Cortex-M0+ deepsleep mode, with the voltage regulator disabled. The VCORE domain is |
| mbed_official | 376:cb4d9db17537 | 275 | consequently powered off. The PLL, the MSI, the HSI oscillator and the HSE oscillator are |
| mbed_official | 376:cb4d9db17537 | 276 | also switched off. SRAM and register contents are lost except for the RTC registers, RTC |
| mbed_official | 376:cb4d9db17537 | 277 | backup registers and Standby circuitry. |
| mbed_official | 376:cb4d9db17537 | 278 | |
| mbed_official | 376:cb4d9db17537 | 279 | To minimize the consumption In Standby mode, VREFINT, the BOR, PVD, and temperature |
| mbed_official | 376:cb4d9db17537 | 280 | sensor can be switched off before entering the Standby mode. They can be switched |
| mbed_official | 376:cb4d9db17537 | 281 | on again by software after exiting the Standby mode. |
| mbed_official | 376:cb4d9db17537 | 282 | function. |
| mbed_official | 376:cb4d9db17537 | 283 | |
| mbed_official | 376:cb4d9db17537 | 284 | (+) Entry: |
| mbed_official | 376:cb4d9db17537 | 285 | (++) The Standby mode is entered using the HAL_PWR_EnterSTANDBYMode() function. |
| mbed_official | 376:cb4d9db17537 | 286 | (+) Exit: |
| mbed_official | 376:cb4d9db17537 | 287 | (++) WKUP pin rising edge, RTC alarm (Alarm A and Alarm B), RTC wakeup, |
| mbed_official | 376:cb4d9db17537 | 288 | tamper event, time-stamp event, external reset in NRST pin, IWDG reset. |
| mbed_official | 376:cb4d9db17537 | 289 | |
| mbed_official | 376:cb4d9db17537 | 290 | *** Auto-wakeup (AWU) from low-power mode *** |
| mbed_official | 376:cb4d9db17537 | 291 | ============================================= |
| mbed_official | 376:cb4d9db17537 | 292 | [..] |
| mbed_official | 376:cb4d9db17537 | 293 | The MCU can be woken up from low-power mode by an RTC Alarm event, an RTC |
| mbed_official | 376:cb4d9db17537 | 294 | Wakeup event, a tamper event, a time-stamp event, or a comparator event, |
| mbed_official | 376:cb4d9db17537 | 295 | without depending on an external interrupt (Auto-wakeup mode). |
| mbed_official | 376:cb4d9db17537 | 296 | |
| mbed_official | 376:cb4d9db17537 | 297 | (+) RTC auto-wakeup (AWU) from the Stop mode |
| mbed_official | 376:cb4d9db17537 | 298 | (++) To wake up from the Stop mode with an RTC alarm event, it is necessary to: |
| mbed_official | 376:cb4d9db17537 | 299 | (+++) Configure the EXTI Line 17 to be sensitive to rising edges (Interrupt |
| mbed_official | 376:cb4d9db17537 | 300 | or Event modes) using the EXTI_Init() function. |
| mbed_official | 376:cb4d9db17537 | 301 | (+++) Enable the RTC Alarm Interrupt using the RTC_ITConfig() function |
| mbed_official | 376:cb4d9db17537 | 302 | (+++) Configure the RTC to generate the RTC alarm using the RTC_SetAlarm() |
| mbed_official | 376:cb4d9db17537 | 303 | and RTC_AlarmCmd() functions. |
| mbed_official | 376:cb4d9db17537 | 304 | (++) To wake up from the Stop mode with an RTC Tamper or time stamp event, it |
| mbed_official | 376:cb4d9db17537 | 305 | is necessary to: |
| mbed_official | 376:cb4d9db17537 | 306 | (+++) Configure the EXTI Line 19 to be sensitive to rising edges (Interrupt |
| mbed_official | 376:cb4d9db17537 | 307 | or Event modes) using the EXTI_Init() function. |
| mbed_official | 376:cb4d9db17537 | 308 | (+++) Enable the RTC Tamper or time stamp Interrupt using the RTC_ITConfig() |
| mbed_official | 376:cb4d9db17537 | 309 | function. |
| mbed_official | 376:cb4d9db17537 | 310 | (+++) Configure the RTC to detect the tamper or time stamp event using the |
| mbed_official | 376:cb4d9db17537 | 311 | RTC_TimeStampConfig(), RTC_TamperTriggerConfig() and RTC_TamperCmd() |
| mbed_official | 376:cb4d9db17537 | 312 | functions. |
| mbed_official | 376:cb4d9db17537 | 313 | (++) To wake up from the Stop mode with an RTC WakeUp event, it is necessary to: |
| mbed_official | 376:cb4d9db17537 | 314 | (+++) Configure the EXTI Line 20 to be sensitive to rising edges (Interrupt |
| mbed_official | 376:cb4d9db17537 | 315 | or Event modes) using the EXTI_Init() function. |
| mbed_official | 376:cb4d9db17537 | 316 | (+++) Enable the RTC WakeUp Interrupt using the RTC_ITConfig() function. |
| mbed_official | 376:cb4d9db17537 | 317 | (+++) Configure the RTC to generate the RTC WakeUp event using the RTC_WakeUpClockConfig(), |
| mbed_official | 376:cb4d9db17537 | 318 | RTC_SetWakeUpCounter() and RTC_WakeUpCmd() functions. |
| mbed_official | 376:cb4d9db17537 | 319 | |
| mbed_official | 376:cb4d9db17537 | 320 | (+) RTC auto-wakeup (AWU) from the Standby mode |
| mbed_official | 376:cb4d9db17537 | 321 | (++) To wake up from the Standby mode with an RTC alarm event, it is necessary to: |
| mbed_official | 376:cb4d9db17537 | 322 | (+++) Enable the RTC Alarm Interrupt using the RTC_ITConfig() function. |
| mbed_official | 376:cb4d9db17537 | 323 | (+++) Configure the RTC to generate the RTC alarm using the RTC_SetAlarm() |
| mbed_official | 376:cb4d9db17537 | 324 | and RTC_AlarmCmd() functions. |
| mbed_official | 376:cb4d9db17537 | 325 | (++) To wake up from the Standby mode with an RTC Tamper or time stamp event, it |
| mbed_official | 376:cb4d9db17537 | 326 | is necessary to: |
| mbed_official | 376:cb4d9db17537 | 327 | (+++) Enable the RTC Tamper or time stamp Interrupt using the RTC_ITConfig() |
| mbed_official | 376:cb4d9db17537 | 328 | function. |
| mbed_official | 376:cb4d9db17537 | 329 | (+++) Configure the RTC to detect the tamper or time stamp event using the |
| mbed_official | 376:cb4d9db17537 | 330 | RTC_TimeStampConfig(), RTC_TamperTriggerConfig() and RTC_TamperCmd() |
| mbed_official | 376:cb4d9db17537 | 331 | functions. |
| mbed_official | 376:cb4d9db17537 | 332 | (++) To wake up from the Standby mode with an RTC WakeUp event, it is necessary to: |
| mbed_official | 376:cb4d9db17537 | 333 | (+++) Enable the RTC WakeUp Interrupt using the RTC_ITConfig() function |
| mbed_official | 376:cb4d9db17537 | 334 | (+++) Configure the RTC to generate the RTC WakeUp event using the RTC_WakeUpClockConfig(), |
| mbed_official | 376:cb4d9db17537 | 335 | RTC_SetWakeUpCounter() and RTC_WakeUpCmd() functions. |
| mbed_official | 376:cb4d9db17537 | 336 | |
| mbed_official | 376:cb4d9db17537 | 337 | (+) Comparator auto-wakeup (AWU) from the Stop mode |
| mbed_official | 376:cb4d9db17537 | 338 | (++) To wake up from the Stop mode with an comparator 1 or comparator 2 wakeup |
| mbed_official | 376:cb4d9db17537 | 339 | event, it is necessary to: |
| mbed_official | 376:cb4d9db17537 | 340 | (+++) Configure the EXTI Line 21 for comparator 1 or EXTI Line 22 for comparator 2 |
| mbed_official | 376:cb4d9db17537 | 341 | to be sensitive to to the selected edges (falling, rising or falling |
| mbed_official | 376:cb4d9db17537 | 342 | and rising) (Interrupt or Event modes) using the EXTI_Init() function. |
| mbed_official | 376:cb4d9db17537 | 343 | (+++) Configure the comparator to generate the event. |
| mbed_official | 376:cb4d9db17537 | 344 | |
| mbed_official | 376:cb4d9db17537 | 345 | @endverbatim |
| mbed_official | 376:cb4d9db17537 | 346 | * @{ |
| mbed_official | 376:cb4d9db17537 | 347 | */ |
| mbed_official | 376:cb4d9db17537 | 348 | |
| mbed_official | 376:cb4d9db17537 | 349 | /** |
| mbed_official | 376:cb4d9db17537 | 350 | * @brief Configures the voltage threshold detected by the Power Voltage Detector(PVD). |
| mbed_official | 376:cb4d9db17537 | 351 | * @param sConfigPVD: pointer to an PWR_PVDTypeDef structure that contains the configuration |
| mbed_official | 376:cb4d9db17537 | 352 | * information for the PVD. |
| mbed_official | 376:cb4d9db17537 | 353 | * @note Refer to the electrical characteristics of your device datasheet for |
| mbed_official | 376:cb4d9db17537 | 354 | * more details about the voltage threshold corresponding to each |
| mbed_official | 376:cb4d9db17537 | 355 | * detection level. |
| mbed_official | 376:cb4d9db17537 | 356 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 357 | */ |
| mbed_official | 376:cb4d9db17537 | 358 | void HAL_PWR_PVDConfig(PWR_PVDTypeDef *sConfigPVD) |
| mbed_official | 376:cb4d9db17537 | 359 | { |
| mbed_official | 376:cb4d9db17537 | 360 | uint32_t tmpreg = 0; |
| mbed_official | 376:cb4d9db17537 | 361 | |
| mbed_official | 376:cb4d9db17537 | 362 | /* Check the parameters */ |
| mbed_official | 376:cb4d9db17537 | 363 | assert_param(IS_PWR_PVD_LEVEL(sConfigPVD->PVDLevel)); |
| mbed_official | 376:cb4d9db17537 | 364 | |
| mbed_official | 376:cb4d9db17537 | 365 | tmpreg = PWR->CR; |
| mbed_official | 376:cb4d9db17537 | 366 | |
| mbed_official | 376:cb4d9db17537 | 367 | /* Clear PLS[7:5] bits */ |
| mbed_official | 376:cb4d9db17537 | 368 | tmpreg &= ~ (uint32_t)PWR_CR_PLS; |
| mbed_official | 376:cb4d9db17537 | 369 | |
| mbed_official | 376:cb4d9db17537 | 370 | /* Set PLS[7:5] bits according to PVDLevel value */ |
| mbed_official | 376:cb4d9db17537 | 371 | tmpreg |= sConfigPVD->PVDLevel; |
| mbed_official | 376:cb4d9db17537 | 372 | |
| mbed_official | 376:cb4d9db17537 | 373 | /* Store the new value */ |
| mbed_official | 376:cb4d9db17537 | 374 | PWR->CR = tmpreg; |
| mbed_official | 376:cb4d9db17537 | 375 | |
| mbed_official | 376:cb4d9db17537 | 376 | /* Configure the EXTI 16 interrupt */ |
| mbed_official | 376:cb4d9db17537 | 377 | if((sConfigPVD->Mode == PWR_MODE_IT_RISING_FALLING) ||\ |
| mbed_official | 376:cb4d9db17537 | 378 | (sConfigPVD->Mode == PWR_MODE_IT_FALLING) ||\ |
| mbed_official | 376:cb4d9db17537 | 379 | (sConfigPVD->Mode == PWR_MODE_IT_RISING)) |
| mbed_official | 376:cb4d9db17537 | 380 | { |
| mbed_official | 376:cb4d9db17537 | 381 | __HAL_PVD_EXTI_ENABLE_IT(PWR_EXTI_LINE_PVD); |
| mbed_official | 376:cb4d9db17537 | 382 | } |
| mbed_official | 376:cb4d9db17537 | 383 | |
| mbed_official | 376:cb4d9db17537 | 384 | /* Clear the edge trigger for the EXTI Line 16 (PVD) */ |
| mbed_official | 376:cb4d9db17537 | 385 | EXTI->RTSR &= ~EXTI_RTSR_TR16; |
| mbed_official | 376:cb4d9db17537 | 386 | EXTI->FTSR &= ~EXTI_FTSR_TR16; |
| mbed_official | 376:cb4d9db17537 | 387 | |
| mbed_official | 376:cb4d9db17537 | 388 | /* Configure the rising edge */ |
| mbed_official | 376:cb4d9db17537 | 389 | if((sConfigPVD->Mode == PWR_MODE_IT_RISING_FALLING) ||\ |
| mbed_official | 376:cb4d9db17537 | 390 | (sConfigPVD->Mode == PWR_MODE_IT_RISING)) |
| mbed_official | 376:cb4d9db17537 | 391 | { |
| mbed_official | 376:cb4d9db17537 | 392 | EXTI->RTSR |= PWR_EXTI_LINE_PVD; |
| mbed_official | 376:cb4d9db17537 | 393 | } |
| mbed_official | 376:cb4d9db17537 | 394 | /* Configure the falling edge */ |
| mbed_official | 376:cb4d9db17537 | 395 | if((sConfigPVD->Mode == PWR_MODE_IT_RISING_FALLING) ||\ |
| mbed_official | 376:cb4d9db17537 | 396 | (sConfigPVD->Mode == PWR_MODE_IT_FALLING)) |
| mbed_official | 376:cb4d9db17537 | 397 | { |
| mbed_official | 376:cb4d9db17537 | 398 | EXTI->FTSR |= PWR_EXTI_LINE_PVD; |
| mbed_official | 376:cb4d9db17537 | 399 | } |
| mbed_official | 376:cb4d9db17537 | 400 | } |
| mbed_official | 376:cb4d9db17537 | 401 | |
| mbed_official | 376:cb4d9db17537 | 402 | /** |
| mbed_official | 376:cb4d9db17537 | 403 | * @brief Enables the Power Voltage Detector(PVD). |
| mbed_official | 376:cb4d9db17537 | 404 | * @param None |
| mbed_official | 376:cb4d9db17537 | 405 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 406 | */ |
| mbed_official | 376:cb4d9db17537 | 407 | void HAL_PWR_EnablePVD(void) |
| mbed_official | 376:cb4d9db17537 | 408 | { |
| mbed_official | 376:cb4d9db17537 | 409 | /* Enable the power voltage detector */ |
| mbed_official | 376:cb4d9db17537 | 410 | PWR->CR |= PWR_CR_PVDE; |
| mbed_official | 376:cb4d9db17537 | 411 | } |
| mbed_official | 376:cb4d9db17537 | 412 | |
| mbed_official | 376:cb4d9db17537 | 413 | /** |
| mbed_official | 376:cb4d9db17537 | 414 | * @brief Disables the Power Voltage Detector(PVD). |
| mbed_official | 376:cb4d9db17537 | 415 | * @param None |
| mbed_official | 376:cb4d9db17537 | 416 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 417 | */ |
| mbed_official | 376:cb4d9db17537 | 418 | void HAL_PWR_DisablePVD(void) |
| mbed_official | 376:cb4d9db17537 | 419 | { |
| mbed_official | 376:cb4d9db17537 | 420 | /* Disable the power voltage detector */ |
| mbed_official | 376:cb4d9db17537 | 421 | PWR->CR &= (uint32_t)~((uint32_t)PWR_CR_PVDE); |
| mbed_official | 376:cb4d9db17537 | 422 | } |
| mbed_official | 376:cb4d9db17537 | 423 | |
| mbed_official | 376:cb4d9db17537 | 424 | /** |
| mbed_official | 376:cb4d9db17537 | 425 | * @brief Enables the WakeUp PINx functionality. |
| mbed_official | 376:cb4d9db17537 | 426 | * @param WakeUpPinx: Specifies the Power Wake-Up pin to enable. |
| mbed_official | 376:cb4d9db17537 | 427 | * This parameter can be one of the following values: |
| mbed_official | 376:cb4d9db17537 | 428 | * @arg PWR_WAKEUP_PIN1 |
| mbed_official | 376:cb4d9db17537 | 429 | * @arg PWR_WAKEUP_PIN2 |
| mbed_official | 376:cb4d9db17537 | 430 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 431 | */ |
| mbed_official | 376:cb4d9db17537 | 432 | void HAL_PWR_EnableWakeUpPin(uint32_t WakeUpPinx) |
| mbed_official | 376:cb4d9db17537 | 433 | { |
| mbed_official | 376:cb4d9db17537 | 434 | /* Check the parameter */ |
| mbed_official | 376:cb4d9db17537 | 435 | assert_param(IS_PWR_WAKEUP_PIN(WakeUpPinx)); |
| mbed_official | 376:cb4d9db17537 | 436 | /* Enable the EWUPx pin */ |
| mbed_official | 376:cb4d9db17537 | 437 | PWR->CSR |= WakeUpPinx; |
| mbed_official | 376:cb4d9db17537 | 438 | } |
| mbed_official | 376:cb4d9db17537 | 439 | |
| mbed_official | 376:cb4d9db17537 | 440 | /** |
| mbed_official | 376:cb4d9db17537 | 441 | * @brief Disables the WakeUp PINx functionality. |
| mbed_official | 376:cb4d9db17537 | 442 | * @param WakeUpPinx: Specifies the Power Wake-Up pin to disable. |
| mbed_official | 376:cb4d9db17537 | 443 | * This parameter can be one of the following values: |
| mbed_official | 376:cb4d9db17537 | 444 | * @arg PWR_WAKEUP_PIN1 |
| mbed_official | 376:cb4d9db17537 | 445 | * @arg PWR_WAKEUP_PIN2 |
| mbed_official | 376:cb4d9db17537 | 446 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 447 | */ |
| mbed_official | 376:cb4d9db17537 | 448 | void HAL_PWR_DisableWakeUpPin(uint32_t WakeUpPinx) |
| mbed_official | 376:cb4d9db17537 | 449 | { |
| mbed_official | 376:cb4d9db17537 | 450 | /* Check the parameter */ |
| mbed_official | 376:cb4d9db17537 | 451 | assert_param(IS_PWR_WAKEUP_PIN(WakeUpPinx)); |
| mbed_official | 376:cb4d9db17537 | 452 | /* Disable the EWUPx pin */ |
| mbed_official | 376:cb4d9db17537 | 453 | PWR->CSR &= ~WakeUpPinx; |
| mbed_official | 376:cb4d9db17537 | 454 | } |
| mbed_official | 376:cb4d9db17537 | 455 | |
| mbed_official | 376:cb4d9db17537 | 456 | /** |
| mbed_official | 376:cb4d9db17537 | 457 | * @brief Enters Sleep mode. |
| mbed_official | 376:cb4d9db17537 | 458 | * @note In Sleep mode, all I/O pins keep the same state as in Run mode. |
| mbed_official | 376:cb4d9db17537 | 459 | * @param Regulator: Specifies the regulator state in SLEEP mode. |
| mbed_official | 376:cb4d9db17537 | 460 | * This parameter can be one of the following values: |
| mbed_official | 376:cb4d9db17537 | 461 | * @arg PWR_MAINREGULATOR_ON: SLEEP mode with regulator ON |
| mbed_official | 376:cb4d9db17537 | 462 | * @arg PWR_LOWPOWERREGULATOR_ON: SLEEP mode with low power regulator ON |
| mbed_official | 376:cb4d9db17537 | 463 | * @param SLEEPEntry: Specifies if SLEEP mode is entered with WFI or WFE instruction. |
| mbed_official | 376:cb4d9db17537 | 464 | * When WFI entry is used, tick interrupt have to be disabled if not desired as |
| mbed_official | 376:cb4d9db17537 | 465 | * the interrupt wake up source. |
| mbed_official | 376:cb4d9db17537 | 466 | * This parameter can be one of the following values: |
| mbed_official | 376:cb4d9db17537 | 467 | * @arg PWR_SLEEPENTRY_WFI: enter SLEEP mode with WFI instruction |
| mbed_official | 376:cb4d9db17537 | 468 | * @arg PWR_SLEEPENTRY_WFE: enter SLEEP mode with WFE instruction |
| mbed_official | 376:cb4d9db17537 | 469 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 470 | */ |
| mbed_official | 376:cb4d9db17537 | 471 | void HAL_PWR_EnterSLEEPMode(uint32_t Regulator, uint8_t SLEEPEntry) |
| mbed_official | 376:cb4d9db17537 | 472 | { |
| mbed_official | 376:cb4d9db17537 | 473 | uint32_t tmpreg = 0; |
| mbed_official | 376:cb4d9db17537 | 474 | /* Check the parameters */ |
| mbed_official | 376:cb4d9db17537 | 475 | assert_param(IS_PWR_REGULATOR(Regulator)); |
| mbed_official | 376:cb4d9db17537 | 476 | assert_param(IS_PWR_SLEEP_ENTRY(SLEEPEntry)); |
| mbed_official | 376:cb4d9db17537 | 477 | |
| mbed_official | 376:cb4d9db17537 | 478 | /* Select the regulator state in Sleep mode ---------------------------------*/ |
| mbed_official | 376:cb4d9db17537 | 479 | tmpreg = PWR->CR; |
| mbed_official | 376:cb4d9db17537 | 480 | /* Clear PDDS and LPDS bits */ |
| mbed_official | 376:cb4d9db17537 | 481 | tmpreg &= (uint32_t)~(PWR_CR_PDDS | PWR_CR_LPSDSR); |
| mbed_official | 376:cb4d9db17537 | 482 | |
| mbed_official | 376:cb4d9db17537 | 483 | /* Set LPSDSR bit according to PWR_Regulator value */ |
| mbed_official | 376:cb4d9db17537 | 484 | tmpreg |= Regulator; |
| mbed_official | 376:cb4d9db17537 | 485 | |
| mbed_official | 376:cb4d9db17537 | 486 | /* Store the new value */ |
| mbed_official | 376:cb4d9db17537 | 487 | PWR->CR = tmpreg; |
| mbed_official | 376:cb4d9db17537 | 488 | |
| mbed_official | 376:cb4d9db17537 | 489 | /* Clear SLEEPDEEP bit of Cortex System Control Register */ |
| mbed_official | 376:cb4d9db17537 | 490 | SCB->SCR &= (uint32_t)~((uint32_t)SCB_SCR_SLEEPDEEP_Msk); |
| mbed_official | 376:cb4d9db17537 | 491 | |
| mbed_official | 376:cb4d9db17537 | 492 | /* Select SLEEP mode entry -------------------------------------------------*/ |
| mbed_official | 376:cb4d9db17537 | 493 | if(SLEEPEntry == PWR_SLEEPENTRY_WFI) |
| mbed_official | 376:cb4d9db17537 | 494 | { |
| mbed_official | 376:cb4d9db17537 | 495 | /* Request Wait For Interrupt */ |
| mbed_official | 376:cb4d9db17537 | 496 | __WFI(); |
| mbed_official | 376:cb4d9db17537 | 497 | } |
| mbed_official | 376:cb4d9db17537 | 498 | else |
| mbed_official | 376:cb4d9db17537 | 499 | { |
| mbed_official | 376:cb4d9db17537 | 500 | /* Request Wait For Event */ |
| mbed_official | 376:cb4d9db17537 | 501 | __SEV(); |
| mbed_official | 376:cb4d9db17537 | 502 | __WFE(); |
| mbed_official | 376:cb4d9db17537 | 503 | __WFE(); |
| mbed_official | 376:cb4d9db17537 | 504 | } |
| mbed_official | 376:cb4d9db17537 | 505 | } |
| mbed_official | 376:cb4d9db17537 | 506 | |
| mbed_official | 376:cb4d9db17537 | 507 | /** |
| mbed_official | 376:cb4d9db17537 | 508 | * @brief Enters Stop mode. |
| mbed_official | 376:cb4d9db17537 | 509 | * @note In Stop mode, all I/O pins keep the same state as in Run mode. |
| mbed_official | 376:cb4d9db17537 | 510 | * @note When exiting Stop mode by issuing an interrupt or a wakeup event, |
| mbed_official | 376:cb4d9db17537 | 511 | * MSI or HSI16 RCoscillator is selected as system clock depending |
| mbed_official | 376:cb4d9db17537 | 512 | * the bit STOPWUCK in the RCC_CFGR register. |
| mbed_official | 376:cb4d9db17537 | 513 | * @note When the voltage regulator operates in low power mode, an additional |
| mbed_official | 376:cb4d9db17537 | 514 | * startup delay is incurred when waking up from Stop mode. |
| mbed_official | 376:cb4d9db17537 | 515 | * By keeping the internal regulator ON during Stop mode, the consumption |
| mbed_official | 376:cb4d9db17537 | 516 | * is higher although the startup time is reduced. |
| mbed_official | 376:cb4d9db17537 | 517 | * @param Regulator: Specifies the regulator state in Stop mode. |
| mbed_official | 376:cb4d9db17537 | 518 | * This parameter can be one of the following values: |
| mbed_official | 376:cb4d9db17537 | 519 | * @arg PWR_MAINREGULATOR_ON: Stop mode with regulator ON |
| mbed_official | 376:cb4d9db17537 | 520 | * @arg PWR_LOWPOWERREGULATOR_ON: Stop mode with low power regulator ON |
| mbed_official | 376:cb4d9db17537 | 521 | * @param STOPEntry: Specifies if Stop mode in entered with WFI or WFE instruction. |
| mbed_official | 376:cb4d9db17537 | 522 | * This parameter can be one of the following values: |
| mbed_official | 376:cb4d9db17537 | 523 | * @arg PWR_STOPENTRY_WFI: Enter Stop mode with WFI instruction |
| mbed_official | 376:cb4d9db17537 | 524 | * @arg PWR_STOPENTRY_WFE: Enter Stop mode with WFE instruction |
| mbed_official | 376:cb4d9db17537 | 525 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 526 | */ |
| mbed_official | 376:cb4d9db17537 | 527 | void HAL_PWR_EnterSTOPMode(uint32_t Regulator, uint8_t STOPEntry) |
| mbed_official | 376:cb4d9db17537 | 528 | { |
| mbed_official | 376:cb4d9db17537 | 529 | uint32_t tmpreg = 0; |
| mbed_official | 376:cb4d9db17537 | 530 | |
| mbed_official | 376:cb4d9db17537 | 531 | /* Check the parameters */ |
| mbed_official | 376:cb4d9db17537 | 532 | assert_param(IS_PWR_REGULATOR(Regulator)); |
| mbed_official | 376:cb4d9db17537 | 533 | assert_param(IS_PWR_STOP_ENTRY(STOPEntry)); |
| mbed_official | 376:cb4d9db17537 | 534 | |
| mbed_official | 376:cb4d9db17537 | 535 | /* Select the regulator state in Stop mode ---------------------------------*/ |
| mbed_official | 376:cb4d9db17537 | 536 | tmpreg = PWR->CR; |
| mbed_official | 376:cb4d9db17537 | 537 | /* Clear PDDS and LPDS bits */ |
| mbed_official | 376:cb4d9db17537 | 538 | tmpreg &= (uint32_t)~(PWR_CR_PDDS | PWR_CR_LPSDSR); |
| mbed_official | 376:cb4d9db17537 | 539 | |
| mbed_official | 376:cb4d9db17537 | 540 | /* Set LPSDSR bit according to PWR_Regulator value */ |
| mbed_official | 376:cb4d9db17537 | 541 | tmpreg |= Regulator; |
| mbed_official | 376:cb4d9db17537 | 542 | |
| mbed_official | 376:cb4d9db17537 | 543 | /* Store the new value */ |
| mbed_official | 376:cb4d9db17537 | 544 | PWR->CR = tmpreg; |
| mbed_official | 376:cb4d9db17537 | 545 | |
| mbed_official | 376:cb4d9db17537 | 546 | /* Set SLEEPDEEP bit of Cortex System Control Register */ |
| mbed_official | 376:cb4d9db17537 | 547 | SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk; |
| mbed_official | 376:cb4d9db17537 | 548 | |
| mbed_official | 376:cb4d9db17537 | 549 | /* Select Stop mode entry --------------------------------------------------*/ |
| mbed_official | 376:cb4d9db17537 | 550 | if(STOPEntry == PWR_STOPENTRY_WFI) |
| mbed_official | 376:cb4d9db17537 | 551 | { |
| mbed_official | 376:cb4d9db17537 | 552 | /* Request Wait For Interrupt */ |
| mbed_official | 376:cb4d9db17537 | 553 | __WFI(); |
| mbed_official | 376:cb4d9db17537 | 554 | } |
| mbed_official | 376:cb4d9db17537 | 555 | else |
| mbed_official | 376:cb4d9db17537 | 556 | { |
| mbed_official | 376:cb4d9db17537 | 557 | /* Request Wait For Event */ |
| mbed_official | 376:cb4d9db17537 | 558 | __SEV(); |
| mbed_official | 376:cb4d9db17537 | 559 | __WFE(); |
| mbed_official | 376:cb4d9db17537 | 560 | __WFE(); |
| mbed_official | 376:cb4d9db17537 | 561 | } |
| mbed_official | 376:cb4d9db17537 | 562 | |
| mbed_official | 376:cb4d9db17537 | 563 | /* Reset SLEEPDEEP bit of Cortex System Control Register */ |
| mbed_official | 376:cb4d9db17537 | 564 | SCB->SCR &= (uint32_t)~((uint32_t)SCB_SCR_SLEEPDEEP_Msk); |
| mbed_official | 376:cb4d9db17537 | 565 | } |
| mbed_official | 376:cb4d9db17537 | 566 | |
| mbed_official | 376:cb4d9db17537 | 567 | /** |
| mbed_official | 376:cb4d9db17537 | 568 | * @brief Enters Standby mode. |
| mbed_official | 376:cb4d9db17537 | 569 | * @note In Standby mode, all I/O pins are high impedance except for: |
| mbed_official | 376:cb4d9db17537 | 570 | * - Reset pad (still available) |
| mbed_official | 376:cb4d9db17537 | 571 | * - RTC_AF1 pin (PC13) if configured for tamper, time-stamp, RTC |
| mbed_official | 376:cb4d9db17537 | 572 | * Alarm out, or RTC clock calibration out. |
| mbed_official | 376:cb4d9db17537 | 573 | * - RTC_AF2 pin (PC13) if configured for tamper. |
| mbed_official | 376:cb4d9db17537 | 574 | * - WKUP pin 1 (PA0) if enabled. |
| mbed_official | 376:cb4d9db17537 | 575 | * - WKUP pin 2 (PC13) if enabled. |
| mbed_official | 376:cb4d9db17537 | 576 | * @param None |
| mbed_official | 376:cb4d9db17537 | 577 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 578 | */ |
| mbed_official | 376:cb4d9db17537 | 579 | void HAL_PWR_EnterSTANDBYMode(void) |
| mbed_official | 376:cb4d9db17537 | 580 | { |
| mbed_official | 376:cb4d9db17537 | 581 | /* Select Standby mode */ |
| mbed_official | 376:cb4d9db17537 | 582 | PWR->CR |= PWR_CR_PDDS; |
| mbed_official | 376:cb4d9db17537 | 583 | |
| mbed_official | 376:cb4d9db17537 | 584 | /* Set SLEEPDEEP bit of Cortex System Control Register */ |
| mbed_official | 376:cb4d9db17537 | 585 | SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk; |
| mbed_official | 376:cb4d9db17537 | 586 | |
| mbed_official | 376:cb4d9db17537 | 587 | /* This option is used to ensure that store operations are completed */ |
| mbed_official | 376:cb4d9db17537 | 588 | #if defined ( __CC_ARM) |
| mbed_official | 376:cb4d9db17537 | 589 | __force_stores(); |
| mbed_official | 376:cb4d9db17537 | 590 | #endif |
| mbed_official | 376:cb4d9db17537 | 591 | /* Request Wait For Interrupt */ |
| mbed_official | 376:cb4d9db17537 | 592 | __WFI(); |
| mbed_official | 376:cb4d9db17537 | 593 | } |
| mbed_official | 376:cb4d9db17537 | 594 | |
| mbed_official | 376:cb4d9db17537 | 595 | /** |
| mbed_official | 376:cb4d9db17537 | 596 | * @brief This function handles the PWR PVD interrupt request. |
| mbed_official | 376:cb4d9db17537 | 597 | * @note This API should be called under the PVD_IRQHandler(). |
| mbed_official | 376:cb4d9db17537 | 598 | * @param None |
| mbed_official | 376:cb4d9db17537 | 599 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 600 | */ |
| mbed_official | 376:cb4d9db17537 | 601 | void HAL_PWR_PVD_IRQHandler(void) |
| mbed_official | 376:cb4d9db17537 | 602 | { |
| mbed_official | 376:cb4d9db17537 | 603 | /* Check PWR exti flag */ |
| mbed_official | 376:cb4d9db17537 | 604 | if(__HAL_PVD_EXTI_GET_FLAG(PWR_EXTI_LINE_PVD) != RESET) |
| mbed_official | 376:cb4d9db17537 | 605 | { |
| mbed_official | 376:cb4d9db17537 | 606 | /* PWR PVD interrupt user callback */ |
| mbed_official | 376:cb4d9db17537 | 607 | HAL_PWR_PVDCallback(); |
| mbed_official | 376:cb4d9db17537 | 608 | |
| mbed_official | 376:cb4d9db17537 | 609 | /* Clear PWR Exti pending bit */ |
| mbed_official | 376:cb4d9db17537 | 610 | __HAL_PVD_EXTI_CLEAR_FLAG(PWR_EXTI_LINE_PVD); |
| mbed_official | 376:cb4d9db17537 | 611 | } |
| mbed_official | 376:cb4d9db17537 | 612 | } |
| mbed_official | 376:cb4d9db17537 | 613 | |
| mbed_official | 376:cb4d9db17537 | 614 | /** |
| mbed_official | 376:cb4d9db17537 | 615 | * @brief PWR PVD interrupt callback |
| mbed_official | 376:cb4d9db17537 | 616 | * @param None |
| mbed_official | 376:cb4d9db17537 | 617 | * @retval None |
| mbed_official | 376:cb4d9db17537 | 618 | */ |
| mbed_official | 376:cb4d9db17537 | 619 | __weak void HAL_PWR_PVDCallback(void) |
| mbed_official | 376:cb4d9db17537 | 620 | { |
| mbed_official | 376:cb4d9db17537 | 621 | /* NOTE : This function Should not be modified, when the callback is needed, |
| mbed_official | 376:cb4d9db17537 | 622 | the HAL_PWR_PVDCallback could be implemented in the user file |
| mbed_official | 376:cb4d9db17537 | 623 | */ |
| mbed_official | 376:cb4d9db17537 | 624 | } |
| mbed_official | 376:cb4d9db17537 | 625 | |
| mbed_official | 376:cb4d9db17537 | 626 | /** |
| mbed_official | 376:cb4d9db17537 | 627 | * @} |
| mbed_official | 376:cb4d9db17537 | 628 | */ |
| mbed_official | 376:cb4d9db17537 | 629 | |
| mbed_official | 376:cb4d9db17537 | 630 | /** |
| mbed_official | 376:cb4d9db17537 | 631 | * @} |
| mbed_official | 376:cb4d9db17537 | 632 | */ |
| mbed_official | 376:cb4d9db17537 | 633 | |
| mbed_official | 376:cb4d9db17537 | 634 | #endif /* HAL_PWR_MODULE_ENABLED */ |
| mbed_official | 376:cb4d9db17537 | 635 | /** |
| mbed_official | 376:cb4d9db17537 | 636 | * @} |
| mbed_official | 376:cb4d9db17537 | 637 | */ |
| mbed_official | 376:cb4d9db17537 | 638 | |
| mbed_official | 376:cb4d9db17537 | 639 | /** |
| mbed_official | 376:cb4d9db17537 | 640 | * @} |
| mbed_official | 376:cb4d9db17537 | 641 | */ |
| mbed_official | 376:cb4d9db17537 | 642 | |
| mbed_official | 376:cb4d9db17537 | 643 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |