mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_pwr.c@80:66393a7b209d, 2014-01-30 (annotated)
- Committer:
- mbed_official
- Date:
- Thu Jan 30 12:15:05 2014 +0000
- Revision:
- 80:66393a7b209d
- Parent:
- 76:aeb1df146756
- Child:
- 106:ced8cbb51063
Synchronized with git revision dba523f83fe09b7fce11fc1299dd1216e9776359
Full URL: https://github.com/mbedmicro/mbed/commit/dba523f83fe09b7fce11fc1299dd1216e9776359/
Update of I2C, SPI, SLEEP for NUCLEO_F103RB and L152RE
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 76:aeb1df146756 | 1 | /** |
mbed_official | 76:aeb1df146756 | 2 | ****************************************************************************** |
mbed_official | 76:aeb1df146756 | 3 | * @file stm32l1xx_pwr.c |
mbed_official | 76:aeb1df146756 | 4 | * @author MCD Application Team |
mbed_official | 80:66393a7b209d | 5 | * @version V1.3.0 |
mbed_official | 80:66393a7b209d | 6 | * @date 31-January-2014 |
mbed_official | 76:aeb1df146756 | 7 | * @brief This file provides firmware functions to manage the following |
mbed_official | 76:aeb1df146756 | 8 | * functionalities of the Power Controller (PWR) peripheral: |
mbed_official | 76:aeb1df146756 | 9 | * + RTC Domain Access |
mbed_official | 76:aeb1df146756 | 10 | * + PVD configuration |
mbed_official | 76:aeb1df146756 | 11 | * + WakeUp pins configuration |
mbed_official | 76:aeb1df146756 | 12 | * + Ultra Low Power mode configuration |
mbed_official | 76:aeb1df146756 | 13 | * + Voltage Scaling configuration |
mbed_official | 76:aeb1df146756 | 14 | * + Low Power modes configuration |
mbed_official | 76:aeb1df146756 | 15 | * + Flags management |
mbed_official | 76:aeb1df146756 | 16 | * |
mbed_official | 76:aeb1df146756 | 17 | ****************************************************************************** |
mbed_official | 76:aeb1df146756 | 18 | * @attention |
mbed_official | 76:aeb1df146756 | 19 | * |
mbed_official | 80:66393a7b209d | 20 | * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> |
mbed_official | 76:aeb1df146756 | 21 | * |
mbed_official | 76:aeb1df146756 | 22 | * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); |
mbed_official | 76:aeb1df146756 | 23 | * You may not use this file except in compliance with the License. |
mbed_official | 76:aeb1df146756 | 24 | * You may obtain a copy of the License at: |
mbed_official | 76:aeb1df146756 | 25 | * |
mbed_official | 76:aeb1df146756 | 26 | * http://www.st.com/software_license_agreement_liberty_v2 |
mbed_official | 76:aeb1df146756 | 27 | * |
mbed_official | 76:aeb1df146756 | 28 | * Unless required by applicable law or agreed to in writing, software |
mbed_official | 76:aeb1df146756 | 29 | * distributed under the License is distributed on an "AS IS" BASIS, |
mbed_official | 76:aeb1df146756 | 30 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
mbed_official | 76:aeb1df146756 | 31 | * See the License for the specific language governing permissions and |
mbed_official | 76:aeb1df146756 | 32 | * limitations under the License. |
mbed_official | 76:aeb1df146756 | 33 | * |
mbed_official | 76:aeb1df146756 | 34 | ****************************************************************************** |
mbed_official | 76:aeb1df146756 | 35 | */ |
mbed_official | 76:aeb1df146756 | 36 | |
mbed_official | 76:aeb1df146756 | 37 | /* Includes ------------------------------------------------------------------*/ |
mbed_official | 76:aeb1df146756 | 38 | #include "stm32l1xx_pwr.h" |
mbed_official | 76:aeb1df146756 | 39 | #include "stm32l1xx_rcc.h" |
mbed_official | 76:aeb1df146756 | 40 | |
mbed_official | 76:aeb1df146756 | 41 | /** @addtogroup STM32L1xx_StdPeriph_Driver |
mbed_official | 76:aeb1df146756 | 42 | * @{ |
mbed_official | 76:aeb1df146756 | 43 | */ |
mbed_official | 76:aeb1df146756 | 44 | |
mbed_official | 76:aeb1df146756 | 45 | /** @defgroup PWR |
mbed_official | 76:aeb1df146756 | 46 | * @brief PWR driver modules |
mbed_official | 76:aeb1df146756 | 47 | * @{ |
mbed_official | 76:aeb1df146756 | 48 | */ |
mbed_official | 76:aeb1df146756 | 49 | |
mbed_official | 76:aeb1df146756 | 50 | /* Private typedef -----------------------------------------------------------*/ |
mbed_official | 76:aeb1df146756 | 51 | /* Private define ------------------------------------------------------------*/ |
mbed_official | 76:aeb1df146756 | 52 | /* --------- PWR registers bit address in the alias region ---------- */ |
mbed_official | 76:aeb1df146756 | 53 | #define PWR_OFFSET (PWR_BASE - PERIPH_BASE) |
mbed_official | 76:aeb1df146756 | 54 | |
mbed_official | 76:aeb1df146756 | 55 | /* --- CR Register ---*/ |
mbed_official | 76:aeb1df146756 | 56 | |
mbed_official | 76:aeb1df146756 | 57 | /* Alias word address of DBP bit */ |
mbed_official | 76:aeb1df146756 | 58 | #define CR_OFFSET (PWR_OFFSET + 0x00) |
mbed_official | 76:aeb1df146756 | 59 | #define DBP_BitNumber 0x08 |
mbed_official | 76:aeb1df146756 | 60 | #define CR_DBP_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (DBP_BitNumber * 4)) |
mbed_official | 76:aeb1df146756 | 61 | |
mbed_official | 76:aeb1df146756 | 62 | /* Alias word address of PVDE bit */ |
mbed_official | 76:aeb1df146756 | 63 | #define PVDE_BitNumber 0x04 |
mbed_official | 76:aeb1df146756 | 64 | #define CR_PVDE_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PVDE_BitNumber * 4)) |
mbed_official | 76:aeb1df146756 | 65 | |
mbed_official | 76:aeb1df146756 | 66 | /* Alias word address of ULP bit */ |
mbed_official | 76:aeb1df146756 | 67 | #define ULP_BitNumber 0x09 |
mbed_official | 76:aeb1df146756 | 68 | #define CR_ULP_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (ULP_BitNumber * 4)) |
mbed_official | 76:aeb1df146756 | 69 | |
mbed_official | 76:aeb1df146756 | 70 | /* Alias word address of FWU bit */ |
mbed_official | 76:aeb1df146756 | 71 | #define FWU_BitNumber 0x0A |
mbed_official | 76:aeb1df146756 | 72 | #define CR_FWU_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (FWU_BitNumber * 4)) |
mbed_official | 76:aeb1df146756 | 73 | |
mbed_official | 76:aeb1df146756 | 74 | /* --- CSR Register ---*/ |
mbed_official | 76:aeb1df146756 | 75 | |
mbed_official | 76:aeb1df146756 | 76 | /* Alias word address of EWUP bit */ |
mbed_official | 76:aeb1df146756 | 77 | #define CSR_OFFSET (PWR_OFFSET + 0x04) |
mbed_official | 76:aeb1df146756 | 78 | #define EWUP_BitNumber 0x08 |
mbed_official | 76:aeb1df146756 | 79 | #define CSR_EWUP_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (EWUP_BitNumber * 4)) |
mbed_official | 76:aeb1df146756 | 80 | |
mbed_official | 76:aeb1df146756 | 81 | /* ------------------ PWR registers bit mask ------------------------ */ |
mbed_official | 76:aeb1df146756 | 82 | |
mbed_official | 76:aeb1df146756 | 83 | /* CR register bit mask */ |
mbed_official | 76:aeb1df146756 | 84 | #define CR_DS_MASK ((uint32_t)0xFFFFFFFC) |
mbed_official | 76:aeb1df146756 | 85 | #define CR_PLS_MASK ((uint32_t)0xFFFFFF1F) |
mbed_official | 76:aeb1df146756 | 86 | #define CR_VOS_MASK ((uint32_t)0xFFFFE7FF) |
mbed_official | 76:aeb1df146756 | 87 | |
mbed_official | 76:aeb1df146756 | 88 | /* Private macro -------------------------------------------------------------*/ |
mbed_official | 76:aeb1df146756 | 89 | /* Private variables ---------------------------------------------------------*/ |
mbed_official | 76:aeb1df146756 | 90 | /* Private function prototypes -----------------------------------------------*/ |
mbed_official | 76:aeb1df146756 | 91 | /* Private functions ---------------------------------------------------------*/ |
mbed_official | 76:aeb1df146756 | 92 | |
mbed_official | 76:aeb1df146756 | 93 | /** @defgroup PWR_Private_Functions |
mbed_official | 76:aeb1df146756 | 94 | * @{ |
mbed_official | 76:aeb1df146756 | 95 | */ |
mbed_official | 76:aeb1df146756 | 96 | |
mbed_official | 76:aeb1df146756 | 97 | /** @defgroup PWR_Group1 RTC Domain Access function |
mbed_official | 76:aeb1df146756 | 98 | * @brief RTC Domain Access function |
mbed_official | 76:aeb1df146756 | 99 | * |
mbed_official | 76:aeb1df146756 | 100 | @verbatim |
mbed_official | 76:aeb1df146756 | 101 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 102 | ##### RTC Domain Access function ##### |
mbed_official | 76:aeb1df146756 | 103 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 104 | |
mbed_official | 76:aeb1df146756 | 105 | [..] After reset, the RTC Registers (RCC CSR Register, RTC registers and RTC backup |
mbed_official | 76:aeb1df146756 | 106 | registers) are protected against possible stray write accesses. |
mbed_official | 76:aeb1df146756 | 107 | [..] To enable access to RTC domain use the PWR_RTCAccessCmd(ENABLE) function. |
mbed_official | 76:aeb1df146756 | 108 | |
mbed_official | 76:aeb1df146756 | 109 | @endverbatim |
mbed_official | 76:aeb1df146756 | 110 | * @{ |
mbed_official | 76:aeb1df146756 | 111 | */ |
mbed_official | 76:aeb1df146756 | 112 | |
mbed_official | 76:aeb1df146756 | 113 | /** |
mbed_official | 76:aeb1df146756 | 114 | * @brief Deinitializes the PWR peripheral registers to their default reset values. |
mbed_official | 76:aeb1df146756 | 115 | * @note Before calling this function, the VOS[1:0] bits should be configured |
mbed_official | 76:aeb1df146756 | 116 | * to "10" and the system frequency has to be configured accordingly. |
mbed_official | 76:aeb1df146756 | 117 | * To configure the VOS[1:0] bits, use the PWR_VoltageScalingConfig() |
mbed_official | 76:aeb1df146756 | 118 | * function. |
mbed_official | 76:aeb1df146756 | 119 | * @note ULP and FWU bits are not reset by this function. |
mbed_official | 76:aeb1df146756 | 120 | * @param None |
mbed_official | 76:aeb1df146756 | 121 | * @retval None |
mbed_official | 76:aeb1df146756 | 122 | */ |
mbed_official | 76:aeb1df146756 | 123 | void PWR_DeInit(void) |
mbed_official | 76:aeb1df146756 | 124 | { |
mbed_official | 76:aeb1df146756 | 125 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_PWR, ENABLE); |
mbed_official | 76:aeb1df146756 | 126 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_PWR, DISABLE); |
mbed_official | 76:aeb1df146756 | 127 | } |
mbed_official | 76:aeb1df146756 | 128 | |
mbed_official | 76:aeb1df146756 | 129 | /** |
mbed_official | 76:aeb1df146756 | 130 | * @brief Enables or disables access to the RTC and backup registers. |
mbed_official | 76:aeb1df146756 | 131 | * @note If the HSE divided by 2, 4, 8 or 16 is used as the RTC clock, the |
mbed_official | 76:aeb1df146756 | 132 | * RTC Domain Access should be kept enabled. |
mbed_official | 76:aeb1df146756 | 133 | * @param NewState: new state of the access to the RTC and backup registers. |
mbed_official | 76:aeb1df146756 | 134 | * This parameter can be: ENABLE or DISABLE. |
mbed_official | 76:aeb1df146756 | 135 | * @retval None |
mbed_official | 76:aeb1df146756 | 136 | */ |
mbed_official | 76:aeb1df146756 | 137 | void PWR_RTCAccessCmd(FunctionalState NewState) |
mbed_official | 76:aeb1df146756 | 138 | { |
mbed_official | 76:aeb1df146756 | 139 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 140 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
mbed_official | 76:aeb1df146756 | 141 | |
mbed_official | 76:aeb1df146756 | 142 | *(__IO uint32_t *) CR_DBP_BB = (uint32_t)NewState; |
mbed_official | 76:aeb1df146756 | 143 | } |
mbed_official | 76:aeb1df146756 | 144 | |
mbed_official | 76:aeb1df146756 | 145 | /** |
mbed_official | 76:aeb1df146756 | 146 | * @} |
mbed_official | 76:aeb1df146756 | 147 | */ |
mbed_official | 76:aeb1df146756 | 148 | |
mbed_official | 76:aeb1df146756 | 149 | /** @defgroup PWR_Group2 PVD configuration functions |
mbed_official | 76:aeb1df146756 | 150 | * @brief PVD configuration functions |
mbed_official | 76:aeb1df146756 | 151 | * |
mbed_official | 76:aeb1df146756 | 152 | @verbatim |
mbed_official | 76:aeb1df146756 | 153 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 154 | ##### PVD configuration functions ##### |
mbed_official | 76:aeb1df146756 | 155 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 156 | [..] |
mbed_official | 76:aeb1df146756 | 157 | (+) The PVD is used to monitor the VDD power supply by comparing it to a threshold |
mbed_official | 76:aeb1df146756 | 158 | selected by the PVD Level (PLS[2:0] bits in the PWR_CR). |
mbed_official | 76:aeb1df146756 | 159 | (+) The PVD can use an external input analog voltage (PVD_IN) which is compared |
mbed_official | 76:aeb1df146756 | 160 | internally to VREFINT. The PVD_IN (PB7) has to be configured in Analog mode |
mbed_official | 76:aeb1df146756 | 161 | when PWR_PVDLevel_7 is selected (PLS[2:0] = 111). |
mbed_official | 76:aeb1df146756 | 162 | (+) A PVDO flag is available to indicate if VDD/VDDA is higher or lower than the |
mbed_official | 76:aeb1df146756 | 163 | PVD threshold. This event is internally connected to the EXTI line16 |
mbed_official | 76:aeb1df146756 | 164 | and can generate an interrupt if enabled through the EXTI registers. |
mbed_official | 76:aeb1df146756 | 165 | (+) The PVD is stopped in Standby mode. |
mbed_official | 76:aeb1df146756 | 166 | |
mbed_official | 76:aeb1df146756 | 167 | @endverbatim |
mbed_official | 76:aeb1df146756 | 168 | * @{ |
mbed_official | 76:aeb1df146756 | 169 | */ |
mbed_official | 76:aeb1df146756 | 170 | |
mbed_official | 76:aeb1df146756 | 171 | /** |
mbed_official | 76:aeb1df146756 | 172 | * @brief Configures the voltage threshold detected by the Power Voltage Detector(PVD). |
mbed_official | 76:aeb1df146756 | 173 | * @param PWR_PVDLevel: specifies the PVD detection level. |
mbed_official | 76:aeb1df146756 | 174 | * This parameter can be one of the following values: |
mbed_official | 76:aeb1df146756 | 175 | * @arg PWR_PVDLevel_0: PVD detection level set to 1.9V. |
mbed_official | 76:aeb1df146756 | 176 | * @arg PWR_PVDLevel_1: PVD detection level set to 2.1V. |
mbed_official | 76:aeb1df146756 | 177 | * @arg PWR_PVDLevel_2: PVD detection level set to 2.3V. |
mbed_official | 76:aeb1df146756 | 178 | * @arg PWR_PVDLevel_3: PVD detection level set to 2.5V. |
mbed_official | 76:aeb1df146756 | 179 | * @arg PWR_PVDLevel_4: PVD detection level set to 2.7V. |
mbed_official | 76:aeb1df146756 | 180 | * @arg PWR_PVDLevel_5: PVD detection level set to 2.9V. |
mbed_official | 76:aeb1df146756 | 181 | * @arg PWR_PVDLevel_6: PVD detection level set to 3.1V. |
mbed_official | 76:aeb1df146756 | 182 | * @arg PWR_PVDLevel_7: External input analog voltage (Compare internally to VREFINT). |
mbed_official | 76:aeb1df146756 | 183 | * @retval None |
mbed_official | 76:aeb1df146756 | 184 | */ |
mbed_official | 76:aeb1df146756 | 185 | void PWR_PVDLevelConfig(uint32_t PWR_PVDLevel) |
mbed_official | 76:aeb1df146756 | 186 | { |
mbed_official | 76:aeb1df146756 | 187 | uint32_t tmpreg = 0; |
mbed_official | 76:aeb1df146756 | 188 | |
mbed_official | 76:aeb1df146756 | 189 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 190 | assert_param(IS_PWR_PVD_LEVEL(PWR_PVDLevel)); |
mbed_official | 76:aeb1df146756 | 191 | |
mbed_official | 76:aeb1df146756 | 192 | tmpreg = PWR->CR; |
mbed_official | 76:aeb1df146756 | 193 | |
mbed_official | 76:aeb1df146756 | 194 | /* Clear PLS[7:5] bits */ |
mbed_official | 76:aeb1df146756 | 195 | tmpreg &= CR_PLS_MASK; |
mbed_official | 76:aeb1df146756 | 196 | |
mbed_official | 76:aeb1df146756 | 197 | /* Set PLS[7:5] bits according to PWR_PVDLevel value */ |
mbed_official | 76:aeb1df146756 | 198 | tmpreg |= PWR_PVDLevel; |
mbed_official | 76:aeb1df146756 | 199 | |
mbed_official | 76:aeb1df146756 | 200 | /* Store the new value */ |
mbed_official | 76:aeb1df146756 | 201 | PWR->CR = tmpreg; |
mbed_official | 76:aeb1df146756 | 202 | } |
mbed_official | 76:aeb1df146756 | 203 | |
mbed_official | 76:aeb1df146756 | 204 | /** |
mbed_official | 76:aeb1df146756 | 205 | * @brief Enables or disables the Power Voltage Detector(PVD). |
mbed_official | 76:aeb1df146756 | 206 | * @param NewState: new state of the PVD. |
mbed_official | 76:aeb1df146756 | 207 | * This parameter can be: ENABLE or DISABLE. |
mbed_official | 76:aeb1df146756 | 208 | * @retval None |
mbed_official | 76:aeb1df146756 | 209 | */ |
mbed_official | 76:aeb1df146756 | 210 | void PWR_PVDCmd(FunctionalState NewState) |
mbed_official | 76:aeb1df146756 | 211 | { |
mbed_official | 76:aeb1df146756 | 212 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 213 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
mbed_official | 76:aeb1df146756 | 214 | |
mbed_official | 76:aeb1df146756 | 215 | *(__IO uint32_t *) CR_PVDE_BB = (uint32_t)NewState; |
mbed_official | 76:aeb1df146756 | 216 | } |
mbed_official | 76:aeb1df146756 | 217 | |
mbed_official | 76:aeb1df146756 | 218 | /** |
mbed_official | 76:aeb1df146756 | 219 | * @} |
mbed_official | 76:aeb1df146756 | 220 | */ |
mbed_official | 76:aeb1df146756 | 221 | |
mbed_official | 76:aeb1df146756 | 222 | /** @defgroup PWR_Group3 WakeUp pins configuration functions |
mbed_official | 76:aeb1df146756 | 223 | * @brief WakeUp pins configuration functions |
mbed_official | 76:aeb1df146756 | 224 | * |
mbed_official | 76:aeb1df146756 | 225 | @verbatim |
mbed_official | 76:aeb1df146756 | 226 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 227 | ##### WakeUp pin configuration functions ##### |
mbed_official | 76:aeb1df146756 | 228 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 229 | |
mbed_official | 76:aeb1df146756 | 230 | (+) WakeUp pins are used to wakeup the system from Standby mode. These pins are |
mbed_official | 76:aeb1df146756 | 231 | forced in input pull down configuration and are active on rising edges. |
mbed_official | 76:aeb1df146756 | 232 | (+) There are three WakeUp pins: WakeUp Pin 1 on PA.00, WakeUp Pin 2 on PC.13 and |
mbed_official | 76:aeb1df146756 | 233 | WakeUp Pin 3 on PE.06. |
mbed_official | 76:aeb1df146756 | 234 | |
mbed_official | 76:aeb1df146756 | 235 | @endverbatim |
mbed_official | 76:aeb1df146756 | 236 | * @{ |
mbed_official | 76:aeb1df146756 | 237 | */ |
mbed_official | 76:aeb1df146756 | 238 | |
mbed_official | 76:aeb1df146756 | 239 | /** |
mbed_official | 76:aeb1df146756 | 240 | * @brief Enables or disables the WakeUp Pin functionality. |
mbed_official | 76:aeb1df146756 | 241 | * @param PWR_WakeUpPin: specifies the WakeUpPin. |
mbed_official | 76:aeb1df146756 | 242 | * This parameter can be: PWR_WakeUpPin_1, PWR_WakeUpPin_2 or PWR_WakeUpPin_3. |
mbed_official | 76:aeb1df146756 | 243 | * @param NewState: new state of the WakeUp Pin functionality. |
mbed_official | 76:aeb1df146756 | 244 | * This parameter can be: ENABLE or DISABLE. |
mbed_official | 76:aeb1df146756 | 245 | * @retval None |
mbed_official | 76:aeb1df146756 | 246 | */ |
mbed_official | 76:aeb1df146756 | 247 | void PWR_WakeUpPinCmd(uint32_t PWR_WakeUpPin, FunctionalState NewState) |
mbed_official | 76:aeb1df146756 | 248 | { |
mbed_official | 76:aeb1df146756 | 249 | __IO uint32_t tmp = 0; |
mbed_official | 76:aeb1df146756 | 250 | |
mbed_official | 76:aeb1df146756 | 251 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 252 | assert_param(IS_PWR_WAKEUP_PIN(PWR_WakeUpPin)); |
mbed_official | 76:aeb1df146756 | 253 | |
mbed_official | 76:aeb1df146756 | 254 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
mbed_official | 76:aeb1df146756 | 255 | |
mbed_official | 76:aeb1df146756 | 256 | tmp = CSR_EWUP_BB + PWR_WakeUpPin; |
mbed_official | 76:aeb1df146756 | 257 | |
mbed_official | 76:aeb1df146756 | 258 | *(__IO uint32_t *) (tmp) = (uint32_t)NewState; |
mbed_official | 76:aeb1df146756 | 259 | } |
mbed_official | 76:aeb1df146756 | 260 | |
mbed_official | 76:aeb1df146756 | 261 | /** |
mbed_official | 76:aeb1df146756 | 262 | * @} |
mbed_official | 76:aeb1df146756 | 263 | */ |
mbed_official | 76:aeb1df146756 | 264 | |
mbed_official | 76:aeb1df146756 | 265 | /** @defgroup PWR_Group4 Ultra Low Power mode configuration functions |
mbed_official | 76:aeb1df146756 | 266 | * @brief Ultra Low Power mode configuration functions |
mbed_official | 76:aeb1df146756 | 267 | * |
mbed_official | 76:aeb1df146756 | 268 | @verbatim |
mbed_official | 76:aeb1df146756 | 269 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 270 | ##### Ultra Low Power mode configuration functions ##### |
mbed_official | 76:aeb1df146756 | 271 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 272 | [..] |
mbed_official | 76:aeb1df146756 | 273 | (+) The internal voltage reference consumption is not negligible, in particular |
mbed_official | 76:aeb1df146756 | 274 | in Stop and Standby mode. To reduce power consumption, use the PWR_UltraLowPowerCmd() |
mbed_official | 76:aeb1df146756 | 275 | function (ULP bit (Ultra low power) in the PWR_CR register) to disable the |
mbed_official | 76:aeb1df146756 | 276 | internal voltage reference. However, in this case, when exiting from the |
mbed_official | 76:aeb1df146756 | 277 | Stop/Standby mode, the functions managed through the internal voltage reference |
mbed_official | 76:aeb1df146756 | 278 | are not reliable during the internal voltage reference startup time (up to 3 ms). |
mbed_official | 76:aeb1df146756 | 279 | To reduce the wakeup time, the device can exit from Stop/Standby mode without |
mbed_official | 76:aeb1df146756 | 280 | waiting for the internal voltage reference startup time. This is performed |
mbed_official | 76:aeb1df146756 | 281 | by using the PWR_FastWakeUpCmd() function (setting the FWU bit (Fast |
mbed_official | 76:aeb1df146756 | 282 | wakeup) in the PWR_CR register) before entering Stop/Standby mode. |
mbed_official | 76:aeb1df146756 | 283 | |
mbed_official | 76:aeb1df146756 | 284 | @endverbatim |
mbed_official | 76:aeb1df146756 | 285 | * @{ |
mbed_official | 76:aeb1df146756 | 286 | */ |
mbed_official | 76:aeb1df146756 | 287 | |
mbed_official | 76:aeb1df146756 | 288 | /** |
mbed_official | 76:aeb1df146756 | 289 | * @brief Enables or disables the Fast WakeUp from Ultra Low Power mode. |
mbed_official | 76:aeb1df146756 | 290 | * @param NewState: new state of the Fast WakeUp functionality. |
mbed_official | 76:aeb1df146756 | 291 | * This parameter can be: ENABLE or DISABLE. |
mbed_official | 76:aeb1df146756 | 292 | * @retval None |
mbed_official | 76:aeb1df146756 | 293 | */ |
mbed_official | 76:aeb1df146756 | 294 | void PWR_FastWakeUpCmd(FunctionalState NewState) |
mbed_official | 76:aeb1df146756 | 295 | { |
mbed_official | 76:aeb1df146756 | 296 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 297 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
mbed_official | 76:aeb1df146756 | 298 | |
mbed_official | 76:aeb1df146756 | 299 | *(__IO uint32_t *) CR_FWU_BB = (uint32_t)NewState; |
mbed_official | 76:aeb1df146756 | 300 | } |
mbed_official | 76:aeb1df146756 | 301 | |
mbed_official | 76:aeb1df146756 | 302 | /** |
mbed_official | 76:aeb1df146756 | 303 | * @brief Enables or disables the Ultra Low Power mode. |
mbed_official | 76:aeb1df146756 | 304 | * @param NewState: new state of the Ultra Low Power mode. |
mbed_official | 76:aeb1df146756 | 305 | * This parameter can be: ENABLE or DISABLE. |
mbed_official | 76:aeb1df146756 | 306 | * @retval None |
mbed_official | 76:aeb1df146756 | 307 | */ |
mbed_official | 76:aeb1df146756 | 308 | void PWR_UltraLowPowerCmd(FunctionalState NewState) |
mbed_official | 76:aeb1df146756 | 309 | { |
mbed_official | 76:aeb1df146756 | 310 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 311 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
mbed_official | 76:aeb1df146756 | 312 | |
mbed_official | 76:aeb1df146756 | 313 | *(__IO uint32_t *) CR_ULP_BB = (uint32_t)NewState; |
mbed_official | 76:aeb1df146756 | 314 | } |
mbed_official | 76:aeb1df146756 | 315 | |
mbed_official | 76:aeb1df146756 | 316 | /** |
mbed_official | 76:aeb1df146756 | 317 | * @} |
mbed_official | 76:aeb1df146756 | 318 | */ |
mbed_official | 76:aeb1df146756 | 319 | |
mbed_official | 76:aeb1df146756 | 320 | /** @defgroup PWR_Group5 Voltage Scaling configuration functions |
mbed_official | 76:aeb1df146756 | 321 | * @brief Voltage Scaling configuration functions |
mbed_official | 76:aeb1df146756 | 322 | * |
mbed_official | 76:aeb1df146756 | 323 | @verbatim |
mbed_official | 76:aeb1df146756 | 324 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 325 | ##### Voltage Scaling configuration functions ##### |
mbed_official | 76:aeb1df146756 | 326 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 327 | |
mbed_official | 76:aeb1df146756 | 328 | (+) The dynamic voltage scaling is a power management technique which consists in |
mbed_official | 76:aeb1df146756 | 329 | increasing or decreasing the voltage used for the digital peripherals (VCORE), |
mbed_official | 76:aeb1df146756 | 330 | according to the circumstances. |
mbed_official | 76:aeb1df146756 | 331 | |
mbed_official | 76:aeb1df146756 | 332 | [..] Depending on the device voltage range, the maximum frequency and FLASH wait |
mbed_official | 76:aeb1df146756 | 333 | state should be adapted accordingly: |
mbed_official | 76:aeb1df146756 | 334 | [..] |
mbed_official | 76:aeb1df146756 | 335 | +------------------------------------------------------------------+ |
mbed_official | 76:aeb1df146756 | 336 | | Wait states | HCLK clock frequency (MHz) | |
mbed_official | 76:aeb1df146756 | 337 | | |------------------------------------------------| |
mbed_official | 76:aeb1df146756 | 338 | | (Latency) | voltage range | voltage range | |
mbed_official | 76:aeb1df146756 | 339 | | | 1.65 V - 3.6 V | 2.0 V - 3.6 V | |
mbed_official | 76:aeb1df146756 | 340 | | |----------------|---------------|---------------| |
mbed_official | 76:aeb1df146756 | 341 | | | Range 3 | Range 2 | Range 1 | |
mbed_official | 76:aeb1df146756 | 342 | | | VCORE = 1.2 V | VCORE = 1.5 V | VCORE = 1.8 V | |
mbed_official | 76:aeb1df146756 | 343 | |---------------- |----------------|---------------|---------------| |
mbed_official | 76:aeb1df146756 | 344 | | 0WS(1CPU cycle) |0 < HCLK <= 2 |0 < HCLK <= 8 |0 < HCLK <= 16 | |
mbed_official | 76:aeb1df146756 | 345 | |-----------------|----------------|---------------|---------------| |
mbed_official | 76:aeb1df146756 | 346 | | 1WS(2CPU cycle) |2 < HCLK <= 4 |8 < HCLK <= 16 |16 < HCLK <= 32| |
mbed_official | 76:aeb1df146756 | 347 | |-----------------|----------------|---------------|---------------| |
mbed_official | 76:aeb1df146756 | 348 | | CPU Performance | Low | Medium | High | |
mbed_official | 76:aeb1df146756 | 349 | |-----__----------|----------------|---------------|---------------| |
mbed_official | 76:aeb1df146756 | 350 | |Power Performance| High | Medium | Low | |
mbed_official | 76:aeb1df146756 | 351 | +------------------------------------------------------------------+ |
mbed_official | 76:aeb1df146756 | 352 | |
mbed_official | 76:aeb1df146756 | 353 | (+) To modify the Product voltage range, user application has to: |
mbed_official | 76:aeb1df146756 | 354 | (++) Check VDD to identify which ranges are allowed (see table above). |
mbed_official | 76:aeb1df146756 | 355 | (++) Check the PWR_FLAG_VOSF (Voltage Scaling update ongoing) using the PWR_GetFlagStatus() |
mbed_official | 76:aeb1df146756 | 356 | function and wait until it is reset. |
mbed_official | 76:aeb1df146756 | 357 | (++) Configure the Voltage range using the PWR_VoltageScalingConfig() function. |
mbed_official | 76:aeb1df146756 | 358 | |
mbed_official | 76:aeb1df146756 | 359 | (+) When VCORE range 1 is selected and VDD drops below 2.0 V, the application must |
mbed_official | 76:aeb1df146756 | 360 | reconfigure the system: |
mbed_official | 76:aeb1df146756 | 361 | (++) Detect that VDD drops below 2.0 V using the PVD Level 1. |
mbed_official | 76:aeb1df146756 | 362 | (++) Adapt the clock frequency to the voltage range that will be selected at next step. |
mbed_official | 76:aeb1df146756 | 363 | (++) Select the required voltage range. |
mbed_official | 76:aeb1df146756 | 364 | (++) When VCORE range 2 or range 3 is selected and VDD drops below 2.0 V, no system |
mbed_official | 76:aeb1df146756 | 365 | reconfiguration is required. |
mbed_official | 76:aeb1df146756 | 366 | |
mbed_official | 76:aeb1df146756 | 367 | (+) When VDD is above 2.0 V, any of the 3 voltage ranges can be selected. |
mbed_official | 76:aeb1df146756 | 368 | (++) When the voltage range is above the targeted voltage range (e.g. from range |
mbed_official | 76:aeb1df146756 | 369 | 1 to 2). |
mbed_official | 76:aeb1df146756 | 370 | (++) Adapt the clock frequency to the lower voltage range that will be selected |
mbed_official | 76:aeb1df146756 | 371 | at next step. |
mbed_official | 76:aeb1df146756 | 372 | (++) Select the required voltage range. |
mbed_official | 76:aeb1df146756 | 373 | (++) When the voltage range is below the targeted voltage range (e.g. from range |
mbed_official | 76:aeb1df146756 | 374 | 3 to 1). |
mbed_official | 76:aeb1df146756 | 375 | (++) Select the required voltage range. |
mbed_official | 76:aeb1df146756 | 376 | (++) Tune the clock frequency if needed. |
mbed_official | 76:aeb1df146756 | 377 | |
mbed_official | 76:aeb1df146756 | 378 | (+) When VDD is below 2.0 V, only range 2 and 3 can be selected: |
mbed_official | 76:aeb1df146756 | 379 | (++) From range 2 to range 3. |
mbed_official | 76:aeb1df146756 | 380 | (+++) Adapt the clock frequency to voltage range 3. |
mbed_official | 76:aeb1df146756 | 381 | (+++) Select voltage range 3. |
mbed_official | 76:aeb1df146756 | 382 | (++) From range 3 to range 2. |
mbed_official | 76:aeb1df146756 | 383 | (+++) Select the voltage range 2. |
mbed_official | 76:aeb1df146756 | 384 | (+++) Tune the clock frequency if needed. |
mbed_official | 76:aeb1df146756 | 385 | |
mbed_official | 76:aeb1df146756 | 386 | @endverbatim |
mbed_official | 76:aeb1df146756 | 387 | * @{ |
mbed_official | 76:aeb1df146756 | 388 | */ |
mbed_official | 76:aeb1df146756 | 389 | |
mbed_official | 76:aeb1df146756 | 390 | /** |
mbed_official | 76:aeb1df146756 | 391 | * @brief Configures the voltage scaling range. |
mbed_official | 76:aeb1df146756 | 392 | * @note During voltage scaling configuration, the system clock is stopped |
mbed_official | 76:aeb1df146756 | 393 | * until the regulator is stabilized (VOSF = 0). This must be taken |
mbed_official | 76:aeb1df146756 | 394 | * into account during application developement, in case a critical |
mbed_official | 76:aeb1df146756 | 395 | * reaction time to interrupt is needed, and depending on peripheral |
mbed_official | 76:aeb1df146756 | 396 | * used (timer, communication,...). |
mbed_official | 76:aeb1df146756 | 397 | * |
mbed_official | 76:aeb1df146756 | 398 | * @param PWR_VoltageScaling: specifies the voltage scaling range. |
mbed_official | 76:aeb1df146756 | 399 | * This parameter can be: |
mbed_official | 76:aeb1df146756 | 400 | * @arg PWR_VoltageScaling_Range1: Voltage Scaling Range 1 (VCORE = 1.8V). |
mbed_official | 76:aeb1df146756 | 401 | * @arg PWR_VoltageScaling_Range2: Voltage Scaling Range 2 (VCORE = 1.5V). |
mbed_official | 76:aeb1df146756 | 402 | * @arg PWR_VoltageScaling_Range3: Voltage Scaling Range 3 (VCORE = 1.2V) |
mbed_official | 76:aeb1df146756 | 403 | * @retval None |
mbed_official | 76:aeb1df146756 | 404 | */ |
mbed_official | 76:aeb1df146756 | 405 | void PWR_VoltageScalingConfig(uint32_t PWR_VoltageScaling) |
mbed_official | 76:aeb1df146756 | 406 | { |
mbed_official | 76:aeb1df146756 | 407 | uint32_t tmp = 0; |
mbed_official | 76:aeb1df146756 | 408 | |
mbed_official | 76:aeb1df146756 | 409 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 410 | assert_param(IS_PWR_VOLTAGE_SCALING_RANGE(PWR_VoltageScaling)); |
mbed_official | 76:aeb1df146756 | 411 | |
mbed_official | 76:aeb1df146756 | 412 | tmp = PWR->CR; |
mbed_official | 76:aeb1df146756 | 413 | |
mbed_official | 76:aeb1df146756 | 414 | tmp &= CR_VOS_MASK; |
mbed_official | 76:aeb1df146756 | 415 | tmp |= PWR_VoltageScaling; |
mbed_official | 76:aeb1df146756 | 416 | |
mbed_official | 76:aeb1df146756 | 417 | PWR->CR = tmp & 0xFFFFFFF3; |
mbed_official | 76:aeb1df146756 | 418 | |
mbed_official | 76:aeb1df146756 | 419 | } |
mbed_official | 76:aeb1df146756 | 420 | |
mbed_official | 76:aeb1df146756 | 421 | /** |
mbed_official | 76:aeb1df146756 | 422 | * @} |
mbed_official | 76:aeb1df146756 | 423 | */ |
mbed_official | 76:aeb1df146756 | 424 | |
mbed_official | 76:aeb1df146756 | 425 | /** @defgroup PWR_Group6 Low Power modes configuration functions |
mbed_official | 76:aeb1df146756 | 426 | * @brief Low Power modes configuration functions |
mbed_official | 76:aeb1df146756 | 427 | * |
mbed_official | 76:aeb1df146756 | 428 | @verbatim |
mbed_official | 76:aeb1df146756 | 429 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 430 | ##### Low Power modes configuration functions ##### |
mbed_official | 76:aeb1df146756 | 431 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 432 | |
mbed_official | 76:aeb1df146756 | 433 | [..] The devices feature five low-power modes: |
mbed_official | 76:aeb1df146756 | 434 | (+) Low power run mode: regulator in low power mode, limited clock frequency, |
mbed_official | 76:aeb1df146756 | 435 | limited number of peripherals running. |
mbed_official | 76:aeb1df146756 | 436 | (+) Sleep mode: Cortex-M3 core stopped, peripherals kept running. |
mbed_official | 76:aeb1df146756 | 437 | (+) Low power sleep mode: Cortex-M3 core stopped, limited clock frequency, |
mbed_official | 76:aeb1df146756 | 438 | limited number of peripherals running, regulator in low power mode. |
mbed_official | 76:aeb1df146756 | 439 | (+) Stop mode: all clocks are stopped, regulator running, regulator in low power mode. |
mbed_official | 76:aeb1df146756 | 440 | (+) Standby mode: VCORE domain powered off. |
mbed_official | 76:aeb1df146756 | 441 | |
mbed_official | 76:aeb1df146756 | 442 | *** Low power run mode (LP run) *** |
mbed_official | 76:aeb1df146756 | 443 | =================================== |
mbed_official | 76:aeb1df146756 | 444 | [..] |
mbed_official | 76:aeb1df146756 | 445 | (+) Entry: |
mbed_official | 76:aeb1df146756 | 446 | (++) Decrease the system frequency. |
mbed_official | 76:aeb1df146756 | 447 | (++) The regulator is forced in low power mode using the PWR_EnterLowPowerRunMode() |
mbed_official | 76:aeb1df146756 | 448 | function. |
mbed_official | 76:aeb1df146756 | 449 | (+) Exit: |
mbed_official | 76:aeb1df146756 | 450 | (++) The regulator is forced in Main regulator mode sing the PWR_EnterLowPowerRunMode() |
mbed_official | 76:aeb1df146756 | 451 | function. |
mbed_official | 76:aeb1df146756 | 452 | (++) Increase the system frequency if needed. |
mbed_official | 76:aeb1df146756 | 453 | |
mbed_official | 76:aeb1df146756 | 454 | *** Sleep mode *** |
mbed_official | 76:aeb1df146756 | 455 | ================== |
mbed_official | 76:aeb1df146756 | 456 | [..] |
mbed_official | 76:aeb1df146756 | 457 | (+) Entry: |
mbed_official | 76:aeb1df146756 | 458 | (++) The Sleep mode is entered by using the PWR_EnterSleepMode(PWR_Regulator_ON,) |
mbed_official | 76:aeb1df146756 | 459 | function with regulator ON. |
mbed_official | 76:aeb1df146756 | 460 | (+) Exit: |
mbed_official | 76:aeb1df146756 | 461 | (++) Any peripheral interrupt acknowledged by the nested vectored interrupt |
mbed_official | 76:aeb1df146756 | 462 | controller (NVIC) can wake up the device from Sleep mode. |
mbed_official | 76:aeb1df146756 | 463 | |
mbed_official | 76:aeb1df146756 | 464 | *** Low power sleep mode (LP sleep) *** |
mbed_official | 76:aeb1df146756 | 465 | ======================================= |
mbed_official | 76:aeb1df146756 | 466 | [..] |
mbed_official | 76:aeb1df146756 | 467 | (+) Entry: |
mbed_official | 76:aeb1df146756 | 468 | (++) The Flash memory must be switched off by using the FLASH_SLEEPPowerDownCmd() |
mbed_official | 76:aeb1df146756 | 469 | function. |
mbed_official | 76:aeb1df146756 | 470 | (++) Decrease the system frequency. |
mbed_official | 76:aeb1df146756 | 471 | (++) The regulator is forced in low power mode and the WFI or WFE instructions |
mbed_official | 76:aeb1df146756 | 472 | are executed using the PWR_EnterSleepMode(PWR_Regulator_LowPower,) function |
mbed_official | 76:aeb1df146756 | 473 | with regulator in LowPower. |
mbed_official | 76:aeb1df146756 | 474 | (+) Exit: |
mbed_official | 76:aeb1df146756 | 475 | (++) Any peripheral interrupt acknowledged by the nested vectored interrupt |
mbed_official | 76:aeb1df146756 | 476 | controller (NVIC) can wake up the device from Sleep LP mode. |
mbed_official | 76:aeb1df146756 | 477 | |
mbed_official | 76:aeb1df146756 | 478 | *** Stop mode *** |
mbed_official | 76:aeb1df146756 | 479 | ================= |
mbed_official | 76:aeb1df146756 | 480 | [..] In Stop mode, all clocks in the VCORE domain are stopped, the PLL, the MSI, |
mbed_official | 76:aeb1df146756 | 481 | the HSI and the HSE RC oscillators are disabled. Internal SRAM and register |
mbed_official | 76:aeb1df146756 | 482 | contents are preserved. |
mbed_official | 76:aeb1df146756 | 483 | The voltage regulator can be configured either in normal or low-power mode. |
mbed_official | 76:aeb1df146756 | 484 | To minimize the consumption In Stop mode, VREFINT, the BOR, PVD, and temperature |
mbed_official | 76:aeb1df146756 | 485 | sensor can be switched off before entering the Stop mode. They can be switched |
mbed_official | 76:aeb1df146756 | 486 | on again by software after exiting the Stop mode using the PWR_UltraLowPowerCmd() |
mbed_official | 76:aeb1df146756 | 487 | function. |
mbed_official | 76:aeb1df146756 | 488 | |
mbed_official | 76:aeb1df146756 | 489 | (+) Entry: |
mbed_official | 76:aeb1df146756 | 490 | (++) The Stop mode is entered using the PWR_EnterSTOPMode(PWR_Regulator_LowPower,) |
mbed_official | 76:aeb1df146756 | 491 | function with regulator in LowPower or with Regulator ON. |
mbed_official | 76:aeb1df146756 | 492 | (+) Exit: |
mbed_official | 76:aeb1df146756 | 493 | (++) Any EXTI Line (Internal or External) configured in Interrupt/Event mode. |
mbed_official | 76:aeb1df146756 | 494 | |
mbed_official | 76:aeb1df146756 | 495 | *** Standby mode *** |
mbed_official | 76:aeb1df146756 | 496 | ==================== |
mbed_official | 76:aeb1df146756 | 497 | [..] The Standby mode allows to achieve the lowest power consumption. It is based |
mbed_official | 76:aeb1df146756 | 498 | on the Cortex-M3 deepsleep mode, with the voltage regulator disabled. |
mbed_official | 76:aeb1df146756 | 499 | The VCORE domain is consequently powered off. The PLL, the MSI, the HSI |
mbed_official | 76:aeb1df146756 | 500 | oscillator and the HSE oscillator are also switched off. SRAM and register |
mbed_official | 76:aeb1df146756 | 501 | contents are lost except for the RTC registers, RTC backup registers and |
mbed_official | 76:aeb1df146756 | 502 | Standby circuitry. |
mbed_official | 76:aeb1df146756 | 503 | |
mbed_official | 76:aeb1df146756 | 504 | [..] The voltage regulator is OFF. |
mbed_official | 76:aeb1df146756 | 505 | |
mbed_official | 76:aeb1df146756 | 506 | [..] To minimize the consumption In Standby mode, VREFINT, the BOR, PVD, and temperature |
mbed_official | 76:aeb1df146756 | 507 | sensor can be switched off before entering the Standby mode. They can be switched |
mbed_official | 76:aeb1df146756 | 508 | on again by software after exiting the Standby mode using the PWR_UltraLowPowerCmd() |
mbed_official | 76:aeb1df146756 | 509 | function. |
mbed_official | 76:aeb1df146756 | 510 | |
mbed_official | 76:aeb1df146756 | 511 | (+) Entry: |
mbed_official | 76:aeb1df146756 | 512 | (++) The Standby mode is entered using the PWR_EnterSTANDBYMode() function. |
mbed_official | 76:aeb1df146756 | 513 | (+) Exit: |
mbed_official | 76:aeb1df146756 | 514 | (++) WKUP pin rising edge, RTC alarm (Alarm A and Alarm B), RTC wakeup, |
mbed_official | 76:aeb1df146756 | 515 | tamper event, time-stamp event, external reset in NRST pin, IWDG reset. |
mbed_official | 76:aeb1df146756 | 516 | |
mbed_official | 76:aeb1df146756 | 517 | *** Auto-wakeup (AWU) from low-power mode *** |
mbed_official | 76:aeb1df146756 | 518 | ============================================= |
mbed_official | 76:aeb1df146756 | 519 | [..]The MCU can be woken up from low-power mode by an RTC Alarm event, an RTC |
mbed_official | 76:aeb1df146756 | 520 | Wakeup event, a tamper event, a time-stamp event, or a comparator event, |
mbed_official | 76:aeb1df146756 | 521 | without depending on an external interrupt (Auto-wakeup mode). |
mbed_official | 76:aeb1df146756 | 522 | |
mbed_official | 76:aeb1df146756 | 523 | (+) RTC auto-wakeup (AWU) from the Stop mode |
mbed_official | 76:aeb1df146756 | 524 | (++) To wake up from the Stop mode with an RTC alarm event, it is necessary to: |
mbed_official | 76:aeb1df146756 | 525 | (+++) Configure the EXTI Line 17 to be sensitive to rising edges (Interrupt |
mbed_official | 76:aeb1df146756 | 526 | or Event modes) using the EXTI_Init() function. |
mbed_official | 76:aeb1df146756 | 527 | (+++) Enable the RTC Alarm Interrupt using the RTC_ITConfig() function |
mbed_official | 76:aeb1df146756 | 528 | (+++) Configure the RTC to generate the RTC alarm using the RTC_SetAlarm() |
mbed_official | 76:aeb1df146756 | 529 | and RTC_AlarmCmd() functions. |
mbed_official | 76:aeb1df146756 | 530 | (++) To wake up from the Stop mode with an RTC Tamper or time stamp event, it |
mbed_official | 76:aeb1df146756 | 531 | is necessary to: |
mbed_official | 76:aeb1df146756 | 532 | (+++) Configure the EXTI Line 19 to be sensitive to rising edges (Interrupt |
mbed_official | 76:aeb1df146756 | 533 | or Event modes) using the EXTI_Init() function. |
mbed_official | 76:aeb1df146756 | 534 | (+++) Enable the RTC Tamper or time stamp Interrupt using the RTC_ITConfig() |
mbed_official | 76:aeb1df146756 | 535 | function. |
mbed_official | 76:aeb1df146756 | 536 | (+++) Configure the RTC to detect the tamper or time stamp event using the |
mbed_official | 76:aeb1df146756 | 537 | RTC_TimeStampConfig(), RTC_TamperTriggerConfig() and RTC_TamperCmd() |
mbed_official | 76:aeb1df146756 | 538 | functions. |
mbed_official | 76:aeb1df146756 | 539 | (++) To wake up from the Stop mode with an RTC WakeUp event, it is necessary to: |
mbed_official | 76:aeb1df146756 | 540 | (+++) Configure the EXTI Line 20 to be sensitive to rising edges (Interrupt |
mbed_official | 76:aeb1df146756 | 541 | or Event modes) using the EXTI_Init() function. |
mbed_official | 76:aeb1df146756 | 542 | (+++) Enable the RTC WakeUp Interrupt using the RTC_ITConfig() function. |
mbed_official | 76:aeb1df146756 | 543 | (+++) Configure the RTC to generate the RTC WakeUp event using the RTC_WakeUpClockConfig(), |
mbed_official | 76:aeb1df146756 | 544 | RTC_SetWakeUpCounter() and RTC_WakeUpCmd() functions. |
mbed_official | 76:aeb1df146756 | 545 | |
mbed_official | 76:aeb1df146756 | 546 | (+) RTC auto-wakeup (AWU) from the Standby mode |
mbed_official | 76:aeb1df146756 | 547 | (++) To wake up from the Standby mode with an RTC alarm event, it is necessary to: |
mbed_official | 76:aeb1df146756 | 548 | (+++) Enable the RTC Alarm Interrupt using the RTC_ITConfig() function. |
mbed_official | 76:aeb1df146756 | 549 | (+++) Configure the RTC to generate the RTC alarm using the RTC_SetAlarm() |
mbed_official | 76:aeb1df146756 | 550 | and RTC_AlarmCmd() functions. |
mbed_official | 76:aeb1df146756 | 551 | (++) To wake up from the Standby mode with an RTC Tamper or time stamp event, it |
mbed_official | 76:aeb1df146756 | 552 | is necessary to: |
mbed_official | 76:aeb1df146756 | 553 | (+++) Enable the RTC Tamper or time stamp Interrupt using the RTC_ITConfig() |
mbed_official | 76:aeb1df146756 | 554 | function. |
mbed_official | 76:aeb1df146756 | 555 | (+++) Configure the RTC to detect the tamper or time stamp event using the |
mbed_official | 76:aeb1df146756 | 556 | RTC_TimeStampConfig(), RTC_TamperTriggerConfig() and RTC_TamperCmd() |
mbed_official | 76:aeb1df146756 | 557 | functions. |
mbed_official | 76:aeb1df146756 | 558 | (++) To wake up from the Standby mode with an RTC WakeUp event, it is necessary to: |
mbed_official | 76:aeb1df146756 | 559 | (+++) Enable the RTC WakeUp Interrupt using the RTC_ITConfig() function |
mbed_official | 76:aeb1df146756 | 560 | (+++) Configure the RTC to generate the RTC WakeUp event using the RTC_WakeUpClockConfig(), |
mbed_official | 76:aeb1df146756 | 561 | RTC_SetWakeUpCounter() and RTC_WakeUpCmd() functions. |
mbed_official | 76:aeb1df146756 | 562 | |
mbed_official | 76:aeb1df146756 | 563 | (+) Comparator auto-wakeup (AWU) from the Stop mode |
mbed_official | 76:aeb1df146756 | 564 | (++) To wake up from the Stop mode with an comparator 1 or comparator 2 wakeup |
mbed_official | 76:aeb1df146756 | 565 | event, it is necessary to: |
mbed_official | 76:aeb1df146756 | 566 | (+++) Configure the EXTI Line 21 for comparator 1 or EXTI Line 22 for comparator 2 |
mbed_official | 76:aeb1df146756 | 567 | to be sensitive to to the selected edges (falling, rising or falling |
mbed_official | 76:aeb1df146756 | 568 | and rising) (Interrupt or Event modes) using the EXTI_Init() function. |
mbed_official | 76:aeb1df146756 | 569 | (+++) Configure the comparator to generate the event. |
mbed_official | 76:aeb1df146756 | 570 | |
mbed_official | 76:aeb1df146756 | 571 | @endverbatim |
mbed_official | 76:aeb1df146756 | 572 | * @{ |
mbed_official | 76:aeb1df146756 | 573 | */ |
mbed_official | 76:aeb1df146756 | 574 | |
mbed_official | 76:aeb1df146756 | 575 | /** |
mbed_official | 76:aeb1df146756 | 576 | * @brief Enters/Exits the Low Power Run mode. |
mbed_official | 76:aeb1df146756 | 577 | * @note Low power run mode can only be entered when VCORE is in range 2. |
mbed_official | 76:aeb1df146756 | 578 | * In addition, the dynamic voltage scaling must not be used when Low |
mbed_official | 76:aeb1df146756 | 579 | * power run mode is selected. Only Stop and Sleep modes with regulator |
mbed_official | 76:aeb1df146756 | 580 | * configured in Low power mode is allowed when Low power run mode is |
mbed_official | 76:aeb1df146756 | 581 | * selected. |
mbed_official | 76:aeb1df146756 | 582 | * @note In Low power run mode, all I/O pins keep the same state as in Run mode. |
mbed_official | 76:aeb1df146756 | 583 | * @param NewState: new state of the Low Power Run mode. |
mbed_official | 76:aeb1df146756 | 584 | * This parameter can be: ENABLE or DISABLE. |
mbed_official | 76:aeb1df146756 | 585 | * @retval None |
mbed_official | 76:aeb1df146756 | 586 | */ |
mbed_official | 76:aeb1df146756 | 587 | void PWR_EnterLowPowerRunMode(FunctionalState NewState) |
mbed_official | 76:aeb1df146756 | 588 | { |
mbed_official | 76:aeb1df146756 | 589 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 590 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
mbed_official | 76:aeb1df146756 | 591 | |
mbed_official | 76:aeb1df146756 | 592 | if (NewState != DISABLE) |
mbed_official | 76:aeb1df146756 | 593 | { |
mbed_official | 76:aeb1df146756 | 594 | PWR->CR |= PWR_CR_LPSDSR; |
mbed_official | 76:aeb1df146756 | 595 | PWR->CR |= PWR_CR_LPRUN; |
mbed_official | 76:aeb1df146756 | 596 | } |
mbed_official | 76:aeb1df146756 | 597 | else |
mbed_official | 76:aeb1df146756 | 598 | { |
mbed_official | 76:aeb1df146756 | 599 | PWR->CR &= (uint32_t)~((uint32_t)PWR_CR_LPRUN); |
mbed_official | 76:aeb1df146756 | 600 | PWR->CR &= (uint32_t)~((uint32_t)PWR_CR_LPSDSR); |
mbed_official | 76:aeb1df146756 | 601 | } |
mbed_official | 76:aeb1df146756 | 602 | } |
mbed_official | 76:aeb1df146756 | 603 | |
mbed_official | 76:aeb1df146756 | 604 | /** |
mbed_official | 76:aeb1df146756 | 605 | * @brief Enters Sleep mode. |
mbed_official | 76:aeb1df146756 | 606 | * @note In Sleep mode, all I/O pins keep the same state as in Run mode. |
mbed_official | 76:aeb1df146756 | 607 | * @param PWR_Regulator: specifies the regulator state in Sleep mode. |
mbed_official | 76:aeb1df146756 | 608 | * This parameter can be one of the following values: |
mbed_official | 76:aeb1df146756 | 609 | * @arg PWR_Regulator_ON: Sleep mode with regulator ON |
mbed_official | 76:aeb1df146756 | 610 | * @arg PWR_Regulator_LowPower: Sleep mode with regulator in low power mode |
mbed_official | 76:aeb1df146756 | 611 | * @note Low power sleep mode can only be entered when VCORE is in range 2. |
mbed_official | 76:aeb1df146756 | 612 | * @note When the voltage regulator operates in low power mode, an additional |
mbed_official | 76:aeb1df146756 | 613 | * startup delay is incurred when waking up from Low power sleep mode. |
mbed_official | 76:aeb1df146756 | 614 | * @param PWR_SLEEPEntry: specifies if SLEEP mode in entered with WFI or WFE instruction. |
mbed_official | 76:aeb1df146756 | 615 | * This parameter can be one of the following values: |
mbed_official | 76:aeb1df146756 | 616 | * @arg PWR_SLEEPEntry_WFI: enter SLEEP mode with WFI instruction |
mbed_official | 76:aeb1df146756 | 617 | * @arg PWR_SLEEPEntry_WFE: enter SLEEP mode with WFE instruction |
mbed_official | 76:aeb1df146756 | 618 | * @retval None |
mbed_official | 76:aeb1df146756 | 619 | */ |
mbed_official | 76:aeb1df146756 | 620 | void PWR_EnterSleepMode(uint32_t PWR_Regulator, uint8_t PWR_SLEEPEntry) |
mbed_official | 76:aeb1df146756 | 621 | { |
mbed_official | 76:aeb1df146756 | 622 | uint32_t tmpreg = 0; |
mbed_official | 76:aeb1df146756 | 623 | |
mbed_official | 76:aeb1df146756 | 624 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 625 | assert_param(IS_PWR_REGULATOR(PWR_Regulator)); |
mbed_official | 76:aeb1df146756 | 626 | |
mbed_official | 76:aeb1df146756 | 627 | assert_param(IS_PWR_SLEEP_ENTRY(PWR_SLEEPEntry)); |
mbed_official | 76:aeb1df146756 | 628 | |
mbed_official | 76:aeb1df146756 | 629 | /* Select the regulator state in Sleep mode ---------------------------------*/ |
mbed_official | 76:aeb1df146756 | 630 | tmpreg = PWR->CR; |
mbed_official | 76:aeb1df146756 | 631 | |
mbed_official | 76:aeb1df146756 | 632 | /* Clear PDDS and LPDSR bits */ |
mbed_official | 76:aeb1df146756 | 633 | tmpreg &= CR_DS_MASK; |
mbed_official | 76:aeb1df146756 | 634 | |
mbed_official | 76:aeb1df146756 | 635 | /* Set LPDSR bit according to PWR_Regulator value */ |
mbed_official | 76:aeb1df146756 | 636 | tmpreg |= PWR_Regulator; |
mbed_official | 76:aeb1df146756 | 637 | |
mbed_official | 76:aeb1df146756 | 638 | /* Store the new value */ |
mbed_official | 76:aeb1df146756 | 639 | PWR->CR = tmpreg; |
mbed_official | 76:aeb1df146756 | 640 | |
mbed_official | 76:aeb1df146756 | 641 | /* Clear SLEEPDEEP bit of Cortex System Control Register */ |
mbed_official | 76:aeb1df146756 | 642 | SCB->SCR &= (uint32_t)~((uint32_t)SCB_SCR_SLEEPDEEP); |
mbed_official | 76:aeb1df146756 | 643 | |
mbed_official | 76:aeb1df146756 | 644 | /* Select SLEEP mode entry -------------------------------------------------*/ |
mbed_official | 76:aeb1df146756 | 645 | if(PWR_SLEEPEntry == PWR_SLEEPEntry_WFI) |
mbed_official | 76:aeb1df146756 | 646 | { |
mbed_official | 76:aeb1df146756 | 647 | /* Request Wait For Interrupt */ |
mbed_official | 76:aeb1df146756 | 648 | __WFI(); |
mbed_official | 76:aeb1df146756 | 649 | } |
mbed_official | 76:aeb1df146756 | 650 | else |
mbed_official | 76:aeb1df146756 | 651 | { |
mbed_official | 76:aeb1df146756 | 652 | /* Request Wait For Event */ |
mbed_official | 76:aeb1df146756 | 653 | __WFE(); |
mbed_official | 76:aeb1df146756 | 654 | } |
mbed_official | 76:aeb1df146756 | 655 | } |
mbed_official | 76:aeb1df146756 | 656 | |
mbed_official | 76:aeb1df146756 | 657 | /** |
mbed_official | 76:aeb1df146756 | 658 | * @brief Enters STOP mode. |
mbed_official | 76:aeb1df146756 | 659 | * @note In Stop mode, all I/O pins keep the same state as in Run mode. |
mbed_official | 76:aeb1df146756 | 660 | * @note When exiting Stop mode by issuing an interrupt or a wakeup event, |
mbed_official | 76:aeb1df146756 | 661 | * the MSI RC oscillator is selected as system clock. |
mbed_official | 76:aeb1df146756 | 662 | * @note When the voltage regulator operates in low power mode, an additional |
mbed_official | 76:aeb1df146756 | 663 | * startup delay is incurred when waking up from Stop mode. |
mbed_official | 76:aeb1df146756 | 664 | * By keeping the internal regulator ON during Stop mode, the consumption |
mbed_official | 76:aeb1df146756 | 665 | * is higher although the startup time is reduced. |
mbed_official | 76:aeb1df146756 | 666 | * @param PWR_Regulator: specifies the regulator state in STOP mode. |
mbed_official | 76:aeb1df146756 | 667 | * This parameter can be one of the following values: |
mbed_official | 76:aeb1df146756 | 668 | * @arg PWR_Regulator_ON: STOP mode with regulator ON. |
mbed_official | 76:aeb1df146756 | 669 | * @arg PWR_Regulator_LowPower: STOP mode with regulator in low power mode. |
mbed_official | 76:aeb1df146756 | 670 | * @param PWR_STOPEntry: specifies if STOP mode in entered with WFI or WFE instruction. |
mbed_official | 76:aeb1df146756 | 671 | * This parameter can be one of the following values: |
mbed_official | 76:aeb1df146756 | 672 | * @arg PWR_STOPEntry_WFI: enter STOP mode with WFI instruction. |
mbed_official | 76:aeb1df146756 | 673 | * @arg PWR_STOPEntry_WFE: enter STOP mode with WFE instruction. |
mbed_official | 76:aeb1df146756 | 674 | * @retval None |
mbed_official | 76:aeb1df146756 | 675 | */ |
mbed_official | 76:aeb1df146756 | 676 | void PWR_EnterSTOPMode(uint32_t PWR_Regulator, uint8_t PWR_STOPEntry) |
mbed_official | 76:aeb1df146756 | 677 | { |
mbed_official | 76:aeb1df146756 | 678 | uint32_t tmpreg = 0; |
mbed_official | 76:aeb1df146756 | 679 | |
mbed_official | 76:aeb1df146756 | 680 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 681 | assert_param(IS_PWR_REGULATOR(PWR_Regulator)); |
mbed_official | 76:aeb1df146756 | 682 | assert_param(IS_PWR_STOP_ENTRY(PWR_STOPEntry)); |
mbed_official | 76:aeb1df146756 | 683 | |
mbed_official | 76:aeb1df146756 | 684 | /* Select the regulator state in STOP mode ---------------------------------*/ |
mbed_official | 76:aeb1df146756 | 685 | tmpreg = PWR->CR; |
mbed_official | 76:aeb1df146756 | 686 | /* Clear PDDS and LPDSR bits */ |
mbed_official | 76:aeb1df146756 | 687 | tmpreg &= CR_DS_MASK; |
mbed_official | 76:aeb1df146756 | 688 | |
mbed_official | 76:aeb1df146756 | 689 | /* Set LPDSR bit according to PWR_Regulator value */ |
mbed_official | 76:aeb1df146756 | 690 | tmpreg |= PWR_Regulator; |
mbed_official | 76:aeb1df146756 | 691 | |
mbed_official | 76:aeb1df146756 | 692 | /* Store the new value */ |
mbed_official | 76:aeb1df146756 | 693 | PWR->CR = tmpreg; |
mbed_official | 76:aeb1df146756 | 694 | |
mbed_official | 76:aeb1df146756 | 695 | /* Set SLEEPDEEP bit of Cortex System Control Register */ |
mbed_official | 76:aeb1df146756 | 696 | SCB->SCR |= SCB_SCR_SLEEPDEEP; |
mbed_official | 76:aeb1df146756 | 697 | |
mbed_official | 76:aeb1df146756 | 698 | /* Select STOP mode entry --------------------------------------------------*/ |
mbed_official | 76:aeb1df146756 | 699 | if(PWR_STOPEntry == PWR_STOPEntry_WFI) |
mbed_official | 76:aeb1df146756 | 700 | { |
mbed_official | 76:aeb1df146756 | 701 | /* Request Wait For Interrupt */ |
mbed_official | 76:aeb1df146756 | 702 | __WFI(); |
mbed_official | 76:aeb1df146756 | 703 | } |
mbed_official | 76:aeb1df146756 | 704 | else |
mbed_official | 76:aeb1df146756 | 705 | { |
mbed_official | 76:aeb1df146756 | 706 | /* Request Wait For Event */ |
mbed_official | 76:aeb1df146756 | 707 | __WFE(); |
mbed_official | 76:aeb1df146756 | 708 | } |
mbed_official | 76:aeb1df146756 | 709 | /* Reset SLEEPDEEP bit of Cortex System Control Register */ |
mbed_official | 76:aeb1df146756 | 710 | SCB->SCR &= (uint32_t)~((uint32_t)SCB_SCR_SLEEPDEEP); |
mbed_official | 76:aeb1df146756 | 711 | } |
mbed_official | 76:aeb1df146756 | 712 | |
mbed_official | 76:aeb1df146756 | 713 | /** |
mbed_official | 76:aeb1df146756 | 714 | * @brief Enters STANDBY mode. |
mbed_official | 76:aeb1df146756 | 715 | * @note In Standby mode, all I/O pins are high impedance except for: |
mbed_official | 76:aeb1df146756 | 716 | * Reset pad (still available) |
mbed_official | 76:aeb1df146756 | 717 | * RTC_AF1 pin (PC13) if configured for Wakeup pin 2 (WKUP2), tamper, |
mbed_official | 76:aeb1df146756 | 718 | * time-stamp, RTC Alarm out, or RTC clock calibration out. |
mbed_official | 76:aeb1df146756 | 719 | * WKUP pin 1 (PA0) and WKUP pin 3 (PE6), if enabled. |
mbed_official | 76:aeb1df146756 | 720 | * @param None |
mbed_official | 76:aeb1df146756 | 721 | * @retval None |
mbed_official | 76:aeb1df146756 | 722 | */ |
mbed_official | 76:aeb1df146756 | 723 | void PWR_EnterSTANDBYMode(void) |
mbed_official | 76:aeb1df146756 | 724 | { |
mbed_official | 76:aeb1df146756 | 725 | /* Clear Wakeup flag */ |
mbed_official | 76:aeb1df146756 | 726 | PWR->CR |= PWR_CR_CWUF; |
mbed_official | 76:aeb1df146756 | 727 | |
mbed_official | 76:aeb1df146756 | 728 | /* Select STANDBY mode */ |
mbed_official | 76:aeb1df146756 | 729 | PWR->CR |= PWR_CR_PDDS; |
mbed_official | 76:aeb1df146756 | 730 | |
mbed_official | 76:aeb1df146756 | 731 | /* Set SLEEPDEEP bit of Cortex System Control Register */ |
mbed_official | 76:aeb1df146756 | 732 | SCB->SCR |= SCB_SCR_SLEEPDEEP; |
mbed_official | 76:aeb1df146756 | 733 | |
mbed_official | 76:aeb1df146756 | 734 | /* This option is used to ensure that store operations are completed */ |
mbed_official | 76:aeb1df146756 | 735 | #if defined ( __CC_ARM ) |
mbed_official | 76:aeb1df146756 | 736 | __force_stores(); |
mbed_official | 76:aeb1df146756 | 737 | #endif |
mbed_official | 76:aeb1df146756 | 738 | /* Request Wait For Interrupt */ |
mbed_official | 76:aeb1df146756 | 739 | __WFI(); |
mbed_official | 76:aeb1df146756 | 740 | } |
mbed_official | 76:aeb1df146756 | 741 | |
mbed_official | 76:aeb1df146756 | 742 | /** |
mbed_official | 76:aeb1df146756 | 743 | * @} |
mbed_official | 76:aeb1df146756 | 744 | */ |
mbed_official | 76:aeb1df146756 | 745 | |
mbed_official | 76:aeb1df146756 | 746 | /** @defgroup PWR_Group7 Flags management functions |
mbed_official | 76:aeb1df146756 | 747 | * @brief Flags management functions |
mbed_official | 76:aeb1df146756 | 748 | * |
mbed_official | 76:aeb1df146756 | 749 | @verbatim |
mbed_official | 76:aeb1df146756 | 750 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 751 | ##### Flags management functions ##### |
mbed_official | 76:aeb1df146756 | 752 | ============================================================================== |
mbed_official | 76:aeb1df146756 | 753 | |
mbed_official | 76:aeb1df146756 | 754 | @endverbatim |
mbed_official | 76:aeb1df146756 | 755 | * @{ |
mbed_official | 76:aeb1df146756 | 756 | */ |
mbed_official | 76:aeb1df146756 | 757 | |
mbed_official | 76:aeb1df146756 | 758 | /** |
mbed_official | 76:aeb1df146756 | 759 | * @brief Checks whether the specified PWR flag is set or not. |
mbed_official | 76:aeb1df146756 | 760 | * @param PWR_FLAG: specifies the flag to check. |
mbed_official | 76:aeb1df146756 | 761 | * This parameter can be one of the following values: |
mbed_official | 76:aeb1df146756 | 762 | * @arg PWR_FLAG_WU: Wake Up flag. This flag indicates that a wakeup event |
mbed_official | 76:aeb1df146756 | 763 | * was received from the WKUP pin or from the RTC alarm (Alarm A or Alarm B), |
mbed_official | 76:aeb1df146756 | 764 | * RTC Tamper event, RTC TimeStamp event or RTC Wakeup. |
mbed_official | 76:aeb1df146756 | 765 | * @arg PWR_FLAG_SB: StandBy flag. This flag indicates that the system was |
mbed_official | 76:aeb1df146756 | 766 | * resumed from StandBy mode. |
mbed_official | 76:aeb1df146756 | 767 | * @arg PWR_FLAG_PVDO: PVD Output. This flag is valid only if PVD is enabled |
mbed_official | 76:aeb1df146756 | 768 | * by the PWR_PVDCmd() function. |
mbed_official | 76:aeb1df146756 | 769 | * @arg PWR_FLAG_VREFINTRDY: Internal Voltage Reference Ready flag. This |
mbed_official | 76:aeb1df146756 | 770 | * flag indicates the state of the internal voltage reference, VREFINT. |
mbed_official | 76:aeb1df146756 | 771 | * @arg PWR_FLAG_VOS: Voltage Scaling select flag. A delay is required for |
mbed_official | 76:aeb1df146756 | 772 | * the internal regulator to be ready after the voltage range is changed. |
mbed_official | 76:aeb1df146756 | 773 | * The VOSF flag indicates that the regulator has reached the voltage level |
mbed_official | 76:aeb1df146756 | 774 | * defined with bits VOS[1:0] of PWR_CR register. |
mbed_official | 76:aeb1df146756 | 775 | * @arg PWR_FLAG_REGLP: Regulator LP flag. This flag is set by hardware |
mbed_official | 76:aeb1df146756 | 776 | * when the MCU is in Low power run mode. |
mbed_official | 76:aeb1df146756 | 777 | * When the MCU exits from Low power run mode, this flag stays SET until |
mbed_official | 76:aeb1df146756 | 778 | * the regulator is ready in main mode. A polling on this flag is |
mbed_official | 76:aeb1df146756 | 779 | * recommended to wait for the regulator main mode. |
mbed_official | 76:aeb1df146756 | 780 | * This flag is RESET by hardware when the regulator is ready. |
mbed_official | 76:aeb1df146756 | 781 | * @retval The new state of PWR_FLAG (SET or RESET). |
mbed_official | 76:aeb1df146756 | 782 | */ |
mbed_official | 76:aeb1df146756 | 783 | FlagStatus PWR_GetFlagStatus(uint32_t PWR_FLAG) |
mbed_official | 76:aeb1df146756 | 784 | { |
mbed_official | 76:aeb1df146756 | 785 | FlagStatus bitstatus = RESET; |
mbed_official | 76:aeb1df146756 | 786 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 787 | assert_param(IS_PWR_GET_FLAG(PWR_FLAG)); |
mbed_official | 76:aeb1df146756 | 788 | |
mbed_official | 76:aeb1df146756 | 789 | if ((PWR->CSR & PWR_FLAG) != (uint32_t)RESET) |
mbed_official | 76:aeb1df146756 | 790 | { |
mbed_official | 76:aeb1df146756 | 791 | bitstatus = SET; |
mbed_official | 76:aeb1df146756 | 792 | } |
mbed_official | 76:aeb1df146756 | 793 | else |
mbed_official | 76:aeb1df146756 | 794 | { |
mbed_official | 76:aeb1df146756 | 795 | bitstatus = RESET; |
mbed_official | 76:aeb1df146756 | 796 | } |
mbed_official | 76:aeb1df146756 | 797 | /* Return the flag status */ |
mbed_official | 76:aeb1df146756 | 798 | return bitstatus; |
mbed_official | 76:aeb1df146756 | 799 | } |
mbed_official | 76:aeb1df146756 | 800 | |
mbed_official | 76:aeb1df146756 | 801 | /** |
mbed_official | 76:aeb1df146756 | 802 | * @brief Clears the PWR's pending flags. |
mbed_official | 76:aeb1df146756 | 803 | * @param PWR_FLAG: specifies the flag to clear. |
mbed_official | 76:aeb1df146756 | 804 | * This parameter can be one of the following values: |
mbed_official | 76:aeb1df146756 | 805 | * @arg PWR_FLAG_WU: Wake Up flag |
mbed_official | 76:aeb1df146756 | 806 | * @arg PWR_FLAG_SB: StandBy flag |
mbed_official | 76:aeb1df146756 | 807 | * @retval None |
mbed_official | 76:aeb1df146756 | 808 | */ |
mbed_official | 76:aeb1df146756 | 809 | void PWR_ClearFlag(uint32_t PWR_FLAG) |
mbed_official | 76:aeb1df146756 | 810 | { |
mbed_official | 76:aeb1df146756 | 811 | /* Check the parameters */ |
mbed_official | 76:aeb1df146756 | 812 | assert_param(IS_PWR_CLEAR_FLAG(PWR_FLAG)); |
mbed_official | 76:aeb1df146756 | 813 | |
mbed_official | 76:aeb1df146756 | 814 | PWR->CR |= PWR_FLAG << 2; |
mbed_official | 76:aeb1df146756 | 815 | } |
mbed_official | 76:aeb1df146756 | 816 | |
mbed_official | 76:aeb1df146756 | 817 | /** |
mbed_official | 76:aeb1df146756 | 818 | * @} |
mbed_official | 76:aeb1df146756 | 819 | */ |
mbed_official | 76:aeb1df146756 | 820 | |
mbed_official | 76:aeb1df146756 | 821 | /** |
mbed_official | 76:aeb1df146756 | 822 | * @} |
mbed_official | 76:aeb1df146756 | 823 | */ |
mbed_official | 76:aeb1df146756 | 824 | |
mbed_official | 76:aeb1df146756 | 825 | /** |
mbed_official | 76:aeb1df146756 | 826 | * @} |
mbed_official | 76:aeb1df146756 | 827 | */ |
mbed_official | 76:aeb1df146756 | 828 | |
mbed_official | 76:aeb1df146756 | 829 | /** |
mbed_official | 76:aeb1df146756 | 830 | * @} |
mbed_official | 76:aeb1df146756 | 831 | */ |
mbed_official | 76:aeb1df146756 | 832 | |
mbed_official | 76:aeb1df146756 | 833 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |