en 129 / mbed-dev

fix LPC812 PWM

Dependents:   IR_LED_Send

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32L4/stm32l4xx_hal.c@129:2e517c56bcfb, 2016-05-16 (annotated)

Committer:
nameless129
Date:
Mon May 16 16:50:30 2016 +0000
Revision:
129:2e517c56bcfb
Parent:
0:9b334a45a8ff 
PWM Fix:Duty 0%??H???????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /**
bogdanm 0:9b334a45a8ff 2 ******************************************************************************
bogdanm 0:9b334a45a8ff 3 * @file stm32l4xx_hal.c
bogdanm 0:9b334a45a8ff 4 * @author MCD Application Team
bogdanm 0:9b334a45a8ff 5 * @version V1.0.0
bogdanm 0:9b334a45a8ff 6 * @date 26-June-2015
bogdanm 0:9b334a45a8ff 7 * @brief HAL module driver.
bogdanm 0:9b334a45a8ff 8 * This is the common part of the HAL initialization
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 @verbatim
bogdanm 0:9b334a45a8ff 11 ==============================================================================
bogdanm 0:9b334a45a8ff 12 ##### How to use this driver #####
bogdanm 0:9b334a45a8ff 13 ==============================================================================
bogdanm 0:9b334a45a8ff 14 [..]
bogdanm 0:9b334a45a8ff 15 The common HAL driver contains a set of generic and common APIs that can be
bogdanm 0:9b334a45a8ff 16 used by the PPP peripheral drivers and the user to start using the HAL.
bogdanm 0:9b334a45a8ff 17 [..]
bogdanm 0:9b334a45a8ff 18 The HAL contains two APIs' categories:
bogdanm 0:9b334a45a8ff 19 (+) Common HAL APIs
bogdanm 0:9b334a45a8ff 20 (+) Services HAL APIs
bogdanm 0:9b334a45a8ff 21
bogdanm 0:9b334a45a8ff 22 @endverbatim
bogdanm 0:9b334a45a8ff 23 ******************************************************************************
bogdanm 0:9b334a45a8ff 24 * @attention
bogdanm 0:9b334a45a8ff 25 *
bogdanm 0:9b334a45a8ff 26 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
bogdanm 0:9b334a45a8ff 27 *
bogdanm 0:9b334a45a8ff 28 * Redistribution and use in source and binary forms, with or without modification,
bogdanm 0:9b334a45a8ff 29 * are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 30 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 31 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 32 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 33 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 34 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 35 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 36 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 37 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 38 *
bogdanm 0:9b334a45a8ff 39 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 40 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 42 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 43 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 44 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 45 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 46 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 47 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 48 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 49 *
bogdanm 0:9b334a45a8ff 50 ******************************************************************************
bogdanm 0:9b334a45a8ff 51 */
bogdanm 0:9b334a45a8ff 52
bogdanm 0:9b334a45a8ff 53 /* Includes ------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 54 #include "stm32l4xx_hal.h"
bogdanm 0:9b334a45a8ff 55
bogdanm 0:9b334a45a8ff 56 /** @addtogroup STM32L4xx_HAL_Driver
bogdanm 0:9b334a45a8ff 57 * @{
bogdanm 0:9b334a45a8ff 58 */
bogdanm 0:9b334a45a8ff 59
bogdanm 0:9b334a45a8ff 60 /** @defgroup HAL HAL
bogdanm 0:9b334a45a8ff 61 * @brief HAL module driver
bogdanm 0:9b334a45a8ff 62 * @{
bogdanm 0:9b334a45a8ff 63 */
bogdanm 0:9b334a45a8ff 64
bogdanm 0:9b334a45a8ff 65 #ifdef HAL_MODULE_ENABLED
bogdanm 0:9b334a45a8ff 66
bogdanm 0:9b334a45a8ff 67 /* Private typedef -----------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 68 /* Private define ------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 69 /**
bogdanm 0:9b334a45a8ff 70 * @brief STM32L4xx HAL Driver version number V1.0.0
bogdanm 0:9b334a45a8ff 71 */
bogdanm 0:9b334a45a8ff 72 #define __STM32L4xx_HAL_VERSION_MAIN (0x01) /*!< [31:24] main version */
bogdanm 0:9b334a45a8ff 73 #define __STM32L4xx_HAL_VERSION_SUB1 (0x00) /*!< [23:16] sub1 version */
bogdanm 0:9b334a45a8ff 74 #define __STM32L4xx_HAL_VERSION_SUB2 (0x00) /*!< [15:8] sub2 version */
bogdanm 0:9b334a45a8ff 75 #define __STM32L4xx_HAL_VERSION_RC (0x00) /*!< [7:0] release candidate */
bogdanm 0:9b334a45a8ff 76 #define __STM32L4xx_HAL_VERSION ((__STM32L4xx_HAL_VERSION_MAIN << 24)\
bogdanm 0:9b334a45a8ff 77 |(__STM32L4xx_HAL_VERSION_SUB1 << 16)\
bogdanm 0:9b334a45a8ff 78 |(__STM32L4xx_HAL_VERSION_SUB2 << 8 )\
bogdanm 0:9b334a45a8ff 79 |(__STM32L4xx_HAL_VERSION_RC))
bogdanm 0:9b334a45a8ff 80
bogdanm 0:9b334a45a8ff 81 #define VREFBUF_TIMEOUT_VALUE (uint32_t)10 /* 10 ms (to be confirmed) */
bogdanm 0:9b334a45a8ff 82
bogdanm 0:9b334a45a8ff 83 /* ------------ SYSCFG registers bit address in the alias region ------------ */
bogdanm 0:9b334a45a8ff 84 #define SYSCFG_OFFSET (SYSCFG_BASE - PERIPH_BASE)
bogdanm 0:9b334a45a8ff 85 /* --- MEMRMP Register ---*/
bogdanm 0:9b334a45a8ff 86 /* Alias word address of FB_MODE bit */
bogdanm 0:9b334a45a8ff 87 #define MEMRMP_OFFSET SYSCFG_OFFSET
bogdanm 0:9b334a45a8ff 88 #define FB_MODE_BitNumber ((uint8_t)0x8)
bogdanm 0:9b334a45a8ff 89 #define FB_MODE_BB (PERIPH_BB_BASE + (MEMRMP_OFFSET * 32) + (FB_MODE_BitNumber * 4))
bogdanm 0:9b334a45a8ff 90
bogdanm 0:9b334a45a8ff 91 /* --- SCSR Register ---*/
bogdanm 0:9b334a45a8ff 92 /* Alias word address of SRAM2ER bit */
bogdanm 0:9b334a45a8ff 93 #define SCSR_OFFSET (SYSCFG_OFFSET + 0x18)
bogdanm 0:9b334a45a8ff 94 #define BRER_BitNumber ((uint8_t)0x0)
bogdanm 0:9b334a45a8ff 95 #define SCSR_SRAM2ER_BB (PERIPH_BB_BASE + (SCSR_OFFSET * 32) + (BRER_BitNumber * 4))
bogdanm 0:9b334a45a8ff 96
bogdanm 0:9b334a45a8ff 97 /* Private macro -------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 98 /* Private variables ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 99 static __IO uint32_t uwTick;
bogdanm 0:9b334a45a8ff 100
bogdanm 0:9b334a45a8ff 101 /* Private function prototypes -----------------------------------------------*/
bogdanm 0:9b334a45a8ff 102 /* Exported functions --------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 103
bogdanm 0:9b334a45a8ff 104 /** @defgroup HAL_Exported_Functions HAL Exported Functions
bogdanm 0:9b334a45a8ff 105 * @{
bogdanm 0:9b334a45a8ff 106 */
bogdanm 0:9b334a45a8ff 107
bogdanm 0:9b334a45a8ff 108 /** @defgroup HAL_Exported_Functions_Group1 Initialization and de-initialization Functions
bogdanm 0:9b334a45a8ff 109 * @brief Initialization and de-initialization functions
bogdanm 0:9b334a45a8ff 110 *
bogdanm 0:9b334a45a8ff 111 @verbatim
bogdanm 0:9b334a45a8ff 112 ===============================================================================
bogdanm 0:9b334a45a8ff 113 ##### Initialization and de-initialization functions #####
bogdanm 0:9b334a45a8ff 114 ===============================================================================
bogdanm 0:9b334a45a8ff 115 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 116 (+) Initialize the Flash interface the NVIC allocation and initial time base
bogdanm 0:9b334a45a8ff 117 clock configuration.
bogdanm 0:9b334a45a8ff 118 (+) De-initialize common part of the HAL.
bogdanm 0:9b334a45a8ff 119 (+) Configure the time base source to have 1ms time base with a dedicated
bogdanm 0:9b334a45a8ff 120 Tick interrupt priority.
bogdanm 0:9b334a45a8ff 121 (++) SysTick timer is used by default as source of time base, but user
bogdanm 0:9b334a45a8ff 122 can eventually implement his proper time base source (a general purpose
bogdanm 0:9b334a45a8ff 123 timer for example or other time source), keeping in mind that Time base
bogdanm 0:9b334a45a8ff 124 duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
bogdanm 0:9b334a45a8ff 125 handled in milliseconds basis.
bogdanm 0:9b334a45a8ff 126 (++) Time base configuration function (HAL_InitTick ()) is called automatically
bogdanm 0:9b334a45a8ff 127 at the beginning of the program after reset by HAL_Init() or at any time
bogdanm 0:9b334a45a8ff 128 when clock is configured, by HAL_RCC_ClockConfig().
bogdanm 0:9b334a45a8ff 129 (++) Source of time base is configured to generate interrupts at regular
bogdanm 0:9b334a45a8ff 130 time intervals. Care must be taken if HAL_Delay() is called from a
bogdanm 0:9b334a45a8ff 131 peripheral ISR process, the Tick interrupt line must have higher priority
bogdanm 0:9b334a45a8ff 132 (numerically lower) than the peripheral interrupt. Otherwise the caller
bogdanm 0:9b334a45a8ff 133 ISR process will be blocked.
bogdanm 0:9b334a45a8ff 134 (++) functions affecting time base configurations are declared as __weak
bogdanm 0:9b334a45a8ff 135 to make override possible in case of other implementations in user file.
bogdanm 0:9b334a45a8ff 136 @endverbatim
bogdanm 0:9b334a45a8ff 137 * @{
bogdanm 0:9b334a45a8ff 138 */
bogdanm 0:9b334a45a8ff 139
bogdanm 0:9b334a45a8ff 140 /**
bogdanm 0:9b334a45a8ff 141 * @brief Configure the Flash prefetch, the Instruction and Data caches,
bogdanm 0:9b334a45a8ff 142 * the time base source, NVIC and any required global low level hardware
bogdanm 0:9b334a45a8ff 143 * by calling the HAL_MspInit() callback function to be optionally defined in user file
bogdanm 0:9b334a45a8ff 144 * stm32l4xx_hal_msp.c.
bogdanm 0:9b334a45a8ff 145 *
bogdanm 0:9b334a45a8ff 146 * @note HAL_Init() function is called at the beginning of program after reset and before
bogdanm 0:9b334a45a8ff 147 * the clock configuration.
bogdanm 0:9b334a45a8ff 148 *
bogdanm 0:9b334a45a8ff 149 * @note In the default implementation the System Timer (Systick) is used as source of time base.
bogdanm 0:9b334a45a8ff 150 * The Systick configuration is based on MSI clock, as MSI is the clock
bogdanm 0:9b334a45a8ff 151 * used after a system Reset and the NVIC configuration is set to Priority group 4.
bogdanm 0:9b334a45a8ff 152 * Once done, time base tick starts incrementing: the tick variable counter is incremented
bogdanm 0:9b334a45a8ff 153 * each 1ms in the SysTick_Handler() interrupt handler.
bogdanm 0:9b334a45a8ff 154 *
bogdanm 0:9b334a45a8ff 155 * @retval HAL status
bogdanm 0:9b334a45a8ff 156 */
bogdanm 0:9b334a45a8ff 157 HAL_StatusTypeDef HAL_Init(void)
bogdanm 0:9b334a45a8ff 158 {
bogdanm 0:9b334a45a8ff 159 /* Configure Flash prefetch, Instruction cache, Data cache */
bogdanm 0:9b334a45a8ff 160 /* Default configuration at reset is: */
bogdanm 0:9b334a45a8ff 161 /* - Prefetch disabled */
bogdanm 0:9b334a45a8ff 162 /* - Instruction cache enabled */
bogdanm 0:9b334a45a8ff 163 /* - Data cache enabled */
bogdanm 0:9b334a45a8ff 164 #if (INSTRUCTION_CACHE_ENABLE == 0)
bogdanm 0:9b334a45a8ff 165 __HAL_FLASH_INSTRUCTION_CACHE_DISABLE();
bogdanm 0:9b334a45a8ff 166 #endif /* INSTRUCTION_CACHE_ENABLE */
bogdanm 0:9b334a45a8ff 167
bogdanm 0:9b334a45a8ff 168 #if (DATA_CACHE_ENABLE == 0)
bogdanm 0:9b334a45a8ff 169 __HAL_FLASH_DATA_CACHE_DISABLE();
bogdanm 0:9b334a45a8ff 170 #endif /* DATA_CACHE_ENABLE */
bogdanm 0:9b334a45a8ff 171
bogdanm 0:9b334a45a8ff 172 #if (PREFETCH_ENABLE != 0)
bogdanm 0:9b334a45a8ff 173 __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
bogdanm 0:9b334a45a8ff 174 #endif /* PREFETCH_ENABLE */
bogdanm 0:9b334a45a8ff 175
bogdanm 0:9b334a45a8ff 176 /* Set Interrupt Group Priority */
bogdanm 0:9b334a45a8ff 177 HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
bogdanm 0:9b334a45a8ff 178
bogdanm 0:9b334a45a8ff 179 /* Use SysTick as time base source and configure 1ms tick (default clock after Reset is MSI) */
bogdanm 0:9b334a45a8ff 180 HAL_InitTick(TICK_INT_PRIORITY);
bogdanm 0:9b334a45a8ff 181
bogdanm 0:9b334a45a8ff 182 /* Init the low level hardware */
bogdanm 0:9b334a45a8ff 183 HAL_MspInit();
bogdanm 0:9b334a45a8ff 184
bogdanm 0:9b334a45a8ff 185 /* Return function status */
bogdanm 0:9b334a45a8ff 186 return HAL_OK;
bogdanm 0:9b334a45a8ff 187 }
bogdanm 0:9b334a45a8ff 188
bogdanm 0:9b334a45a8ff 189 /**
bogdanm 0:9b334a45a8ff 190 * @brief De-initialize common part of the HAL and stop the source of time base.
bogdanm 0:9b334a45a8ff 191 * @note This function is optional.
bogdanm 0:9b334a45a8ff 192 * @retval HAL status
bogdanm 0:9b334a45a8ff 193 */
bogdanm 0:9b334a45a8ff 194 HAL_StatusTypeDef HAL_DeInit(void)
bogdanm 0:9b334a45a8ff 195 {
bogdanm 0:9b334a45a8ff 196 /* Reset of all peripherals */
bogdanm 0:9b334a45a8ff 197 __HAL_RCC_APB1_FORCE_RESET();
bogdanm 0:9b334a45a8ff 198 __HAL_RCC_APB1_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 199
bogdanm 0:9b334a45a8ff 200 __HAL_RCC_APB2_FORCE_RESET();
bogdanm 0:9b334a45a8ff 201 __HAL_RCC_APB2_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 202
bogdanm 0:9b334a45a8ff 203 __HAL_RCC_AHB1_FORCE_RESET();
bogdanm 0:9b334a45a8ff 204 __HAL_RCC_AHB1_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 205
bogdanm 0:9b334a45a8ff 206 __HAL_RCC_AHB2_FORCE_RESET();
bogdanm 0:9b334a45a8ff 207 __HAL_RCC_AHB2_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 208
bogdanm 0:9b334a45a8ff 209 __HAL_RCC_AHB3_FORCE_RESET();
bogdanm 0:9b334a45a8ff 210 __HAL_RCC_AHB3_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 211
bogdanm 0:9b334a45a8ff 212 /* De-Init the low level hardware */
bogdanm 0:9b334a45a8ff 213 HAL_MspDeInit();
bogdanm 0:9b334a45a8ff 214
bogdanm 0:9b334a45a8ff 215 /* Return function status */
bogdanm 0:9b334a45a8ff 216 return HAL_OK;
bogdanm 0:9b334a45a8ff 217 }
bogdanm 0:9b334a45a8ff 218
bogdanm 0:9b334a45a8ff 219 /**
bogdanm 0:9b334a45a8ff 220 * @brief Initialize the MSP.
bogdanm 0:9b334a45a8ff 221 * @retval None
bogdanm 0:9b334a45a8ff 222 */
bogdanm 0:9b334a45a8ff 223 __weak void HAL_MspInit(void)
bogdanm 0:9b334a45a8ff 224 {
bogdanm 0:9b334a45a8ff 225 /* NOTE : This function should not be modified, when the callback is needed,
bogdanm 0:9b334a45a8ff 226 the HAL_MspInit could be implemented in the user file
bogdanm 0:9b334a45a8ff 227 */
bogdanm 0:9b334a45a8ff 228 }
bogdanm 0:9b334a45a8ff 229
bogdanm 0:9b334a45a8ff 230 /**
bogdanm 0:9b334a45a8ff 231 * @brief DeInitialize the MSP.
bogdanm 0:9b334a45a8ff 232 * @retval None
bogdanm 0:9b334a45a8ff 233 */
bogdanm 0:9b334a45a8ff 234 __weak void HAL_MspDeInit(void)
bogdanm 0:9b334a45a8ff 235 {
bogdanm 0:9b334a45a8ff 236 /* NOTE : This function should not be modified, when the callback is needed,
bogdanm 0:9b334a45a8ff 237 the HAL_MspDeInit could be implemented in the user file
bogdanm 0:9b334a45a8ff 238 */
bogdanm 0:9b334a45a8ff 239 }
bogdanm 0:9b334a45a8ff 240
bogdanm 0:9b334a45a8ff 241 /**
bogdanm 0:9b334a45a8ff 242 * @brief This function configures the source of the time base:
bogdanm 0:9b334a45a8ff 243 * The time source is configured to have 1ms time base with a dedicated
bogdanm 0:9b334a45a8ff 244 * Tick interrupt priority.
bogdanm 0:9b334a45a8ff 245 * @note This function is called automatically at the beginning of program after
bogdanm 0:9b334a45a8ff 246 * reset by HAL_Init() or at any time when clock is reconfigured by HAL_RCC_ClockConfig().
bogdanm 0:9b334a45a8ff 247 * @note In the default implementation, SysTick timer is the source of time base.
bogdanm 0:9b334a45a8ff 248 * It is used to generate interrupts at regular time intervals.
bogdanm 0:9b334a45a8ff 249 * Care must be taken if HAL_Delay() is called from a peripheral ISR process,
bogdanm 0:9b334a45a8ff 250 * The SysTick interrupt must have higher priority (numerically lower)
bogdanm 0:9b334a45a8ff 251 * than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
bogdanm 0:9b334a45a8ff 252 * The function is declared as __weak to be overwritten in case of other
bogdanm 0:9b334a45a8ff 253 * implementation in user file.
bogdanm 0:9b334a45a8ff 254 * @param TickPriority: Tick interrupt priority.
bogdanm 0:9b334a45a8ff 255 * @retval HAL status
bogdanm 0:9b334a45a8ff 256 */
bogdanm 0:9b334a45a8ff 257 __weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
bogdanm 0:9b334a45a8ff 258 {
bogdanm 0:9b334a45a8ff 259 /*Configure the SysTick to have interrupt in 1ms time basis*/
bogdanm 0:9b334a45a8ff 260 HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
bogdanm 0:9b334a45a8ff 261
bogdanm 0:9b334a45a8ff 262 /*Configure the SysTick IRQ priority */
bogdanm 0:9b334a45a8ff 263 HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority ,0);
bogdanm 0:9b334a45a8ff 264
bogdanm 0:9b334a45a8ff 265 /* Return function status */
bogdanm 0:9b334a45a8ff 266 return HAL_OK;
bogdanm 0:9b334a45a8ff 267 }
bogdanm 0:9b334a45a8ff 268
bogdanm 0:9b334a45a8ff 269 /**
bogdanm 0:9b334a45a8ff 270 * @}
bogdanm 0:9b334a45a8ff 271 */
bogdanm 0:9b334a45a8ff 272
bogdanm 0:9b334a45a8ff 273 /** @defgroup HAL_Exported_Functions_Group2 HAL Control functions
bogdanm 0:9b334a45a8ff 274 * @brief HAL Control functions
bogdanm 0:9b334a45a8ff 275 *
bogdanm 0:9b334a45a8ff 276 @verbatim
bogdanm 0:9b334a45a8ff 277 ===============================================================================
bogdanm 0:9b334a45a8ff 278 ##### HAL Control functions #####
bogdanm 0:9b334a45a8ff 279 ===============================================================================
bogdanm 0:9b334a45a8ff 280 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 281 (+) Provide a tick value in millisecond
bogdanm 0:9b334a45a8ff 282 (+) Provide a blocking delay in millisecond
bogdanm 0:9b334a45a8ff 283 (+) Suspend the time base source interrupt
bogdanm 0:9b334a45a8ff 284 (+) Resume the time base source interrupt
bogdanm 0:9b334a45a8ff 285 (+) Get the HAL API driver version
bogdanm 0:9b334a45a8ff 286 (+) Get the device identifier
bogdanm 0:9b334a45a8ff 287 (+) Get the device revision identifier
bogdanm 0:9b334a45a8ff 288
bogdanm 0:9b334a45a8ff 289 @endverbatim
bogdanm 0:9b334a45a8ff 290 * @{
bogdanm 0:9b334a45a8ff 291 */
bogdanm 0:9b334a45a8ff 292
bogdanm 0:9b334a45a8ff 293 /**
bogdanm 0:9b334a45a8ff 294 * @brief This function is called to increment a global variable "uwTick"
bogdanm 0:9b334a45a8ff 295 * used as application time base.
bogdanm 0:9b334a45a8ff 296 * @note In the default implementation, this variable is incremented each 1ms
bogdanm 0:9b334a45a8ff 297 * in SysTick ISR.
bogdanm 0:9b334a45a8ff 298 * @note This function is declared as __weak to be overwritten in case of other
bogdanm 0:9b334a45a8ff 299 * implementations in user file.
bogdanm 0:9b334a45a8ff 300 * @retval None
bogdanm 0:9b334a45a8ff 301 */
bogdanm 0:9b334a45a8ff 302 __weak void HAL_IncTick(void)
bogdanm 0:9b334a45a8ff 303 {
bogdanm 0:9b334a45a8ff 304 uwTick++;
bogdanm 0:9b334a45a8ff 305 }
bogdanm 0:9b334a45a8ff 306
bogdanm 0:9b334a45a8ff 307 /**
bogdanm 0:9b334a45a8ff 308 * @brief Provide a tick value in millisecond.
bogdanm 0:9b334a45a8ff 309 * @note This function is declared as __weak to be overwritten in case of other
bogdanm 0:9b334a45a8ff 310 * implementations in user file.
bogdanm 0:9b334a45a8ff 311 * @retval tick value
bogdanm 0:9b334a45a8ff 312 */
bogdanm 0:9b334a45a8ff 313 __weak uint32_t HAL_GetTick(void)
bogdanm 0:9b334a45a8ff 314 {
bogdanm 0:9b334a45a8ff 315 return uwTick;
bogdanm 0:9b334a45a8ff 316 }
bogdanm 0:9b334a45a8ff 317
bogdanm 0:9b334a45a8ff 318 /**
bogdanm 0:9b334a45a8ff 319 * @brief Provide accurate delay (in milliseconds) based on variable incremented.
bogdanm 0:9b334a45a8ff 320 * @note In the default implementation , SysTick timer is the source of time base.
bogdanm 0:9b334a45a8ff 321 * It is used to generate interrupts at regular time intervals where uwTick
bogdanm 0:9b334a45a8ff 322 * is incremented.
bogdanm 0:9b334a45a8ff 323 * @note This function is declared as __weak to be overwritten in case of other
bogdanm 0:9b334a45a8ff 324 * implementations in user file.
bogdanm 0:9b334a45a8ff 325 * @param Delay: specifies the delay time length, in milliseconds.
bogdanm 0:9b334a45a8ff 326 * @retval None
bogdanm 0:9b334a45a8ff 327 */
bogdanm 0:9b334a45a8ff 328 __weak void HAL_Delay(uint32_t Delay)
bogdanm 0:9b334a45a8ff 329 {
bogdanm 0:9b334a45a8ff 330 uint32_t tickstart = 0;
bogdanm 0:9b334a45a8ff 331 tickstart = HAL_GetTick();
bogdanm 0:9b334a45a8ff 332 while((HAL_GetTick() - tickstart) < Delay)
bogdanm 0:9b334a45a8ff 333 {
bogdanm 0:9b334a45a8ff 334 }
bogdanm 0:9b334a45a8ff 335 }
bogdanm 0:9b334a45a8ff 336
bogdanm 0:9b334a45a8ff 337 /**
bogdanm 0:9b334a45a8ff 338 * @brief Suspend Tick increment.
bogdanm 0:9b334a45a8ff 339 * @note In the default implementation , SysTick timer is the source of time base. It is
bogdanm 0:9b334a45a8ff 340 * used to generate interrupts at regular time intervals. Once HAL_SuspendTick()
bogdanm 0:9b334a45a8ff 341 * is called, the SysTick interrupt will be disabled and so Tick increment
bogdanm 0:9b334a45a8ff 342 * is suspended.
bogdanm 0:9b334a45a8ff 343 * @note This function is declared as __weak to be overwritten in case of other
bogdanm 0:9b334a45a8ff 344 * implementations in user file.
bogdanm 0:9b334a45a8ff 345 * @retval None
bogdanm 0:9b334a45a8ff 346 */
bogdanm 0:9b334a45a8ff 347 __weak void HAL_SuspendTick(void)
bogdanm 0:9b334a45a8ff 348 {
bogdanm 0:9b334a45a8ff 349 /* Disable SysTick Interrupt */
bogdanm 0:9b334a45a8ff 350 SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk;
bogdanm 0:9b334a45a8ff 351 }
bogdanm 0:9b334a45a8ff 352
bogdanm 0:9b334a45a8ff 353 /**
bogdanm 0:9b334a45a8ff 354 * @brief Resume Tick increment.
bogdanm 0:9b334a45a8ff 355 * @note In the default implementation , SysTick timer is the source of time base. It is
bogdanm 0:9b334a45a8ff 356 * used to generate interrupts at regular time intervals. Once HAL_ResumeTick()
bogdanm 0:9b334a45a8ff 357 * is called, the SysTick interrupt will be enabled and so Tick increment
bogdanm 0:9b334a45a8ff 358 * is resumed.
bogdanm 0:9b334a45a8ff 359 * @note This function is declared as __weak to be overwritten in case of other
bogdanm 0:9b334a45a8ff 360 * implementations in user file.
bogdanm 0:9b334a45a8ff 361 * @retval None
bogdanm 0:9b334a45a8ff 362 */
bogdanm 0:9b334a45a8ff 363 __weak void HAL_ResumeTick(void)
bogdanm 0:9b334a45a8ff 364 {
bogdanm 0:9b334a45a8ff 365 /* Enable SysTick Interrupt */
bogdanm 0:9b334a45a8ff 366 SysTick->CTRL |= SysTick_CTRL_TICKINT_Msk;
bogdanm 0:9b334a45a8ff 367 }
bogdanm 0:9b334a45a8ff 368
bogdanm 0:9b334a45a8ff 369 /**
bogdanm 0:9b334a45a8ff 370 * @brief Return the HAL revision.
bogdanm 0:9b334a45a8ff 371 * @retval version : 0xXYZR (8bits for each decimal, R for RC)
bogdanm 0:9b334a45a8ff 372 */
bogdanm 0:9b334a45a8ff 373 uint32_t HAL_GetHalVersion(void)
bogdanm 0:9b334a45a8ff 374 {
bogdanm 0:9b334a45a8ff 375 return __STM32L4xx_HAL_VERSION;
bogdanm 0:9b334a45a8ff 376 }
bogdanm 0:9b334a45a8ff 377
bogdanm 0:9b334a45a8ff 378 /**
bogdanm 0:9b334a45a8ff 379 * @brief Return the device revision identifier.
bogdanm 0:9b334a45a8ff 380 * @retval Device revision identifier
bogdanm 0:9b334a45a8ff 381 */
bogdanm 0:9b334a45a8ff 382 uint32_t HAL_GetREVID(void)
bogdanm 0:9b334a45a8ff 383 {
bogdanm 0:9b334a45a8ff 384 return((DBGMCU->IDCODE & DBGMCU_IDCODE_REV_ID) >> 16);
bogdanm 0:9b334a45a8ff 385 }
bogdanm 0:9b334a45a8ff 386
bogdanm 0:9b334a45a8ff 387 /**
bogdanm 0:9b334a45a8ff 388 * @brief Return the device identifier.
bogdanm 0:9b334a45a8ff 389 * @retval Device identifier
bogdanm 0:9b334a45a8ff 390 */
bogdanm 0:9b334a45a8ff 391 uint32_t HAL_GetDEVID(void)
bogdanm 0:9b334a45a8ff 392 {
bogdanm 0:9b334a45a8ff 393 return(DBGMCU->IDCODE & DBGMCU_IDCODE_DEV_ID);
bogdanm 0:9b334a45a8ff 394 }
bogdanm 0:9b334a45a8ff 395
bogdanm 0:9b334a45a8ff 396 /**
bogdanm 0:9b334a45a8ff 397 * @}
bogdanm 0:9b334a45a8ff 398 */
bogdanm 0:9b334a45a8ff 399
bogdanm 0:9b334a45a8ff 400 /** @defgroup HAL_Exported_Functions_Group3 HAL Debug functions
bogdanm 0:9b334a45a8ff 401 * @brief HAL Debug functions
bogdanm 0:9b334a45a8ff 402 *
bogdanm 0:9b334a45a8ff 403 @verbatim
bogdanm 0:9b334a45a8ff 404 ===============================================================================
bogdanm 0:9b334a45a8ff 405 ##### HAL Debug functions #####
bogdanm 0:9b334a45a8ff 406 ===============================================================================
bogdanm 0:9b334a45a8ff 407 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 408 (+) Enable/Disable Debug module during SLEEP mode
bogdanm 0:9b334a45a8ff 409 (+) Enable/Disable Debug module during STOP1/STOP2 modes
bogdanm 0:9b334a45a8ff 410 (+) Enable/Disable Debug module during STANDBY mode
bogdanm 0:9b334a45a8ff 411
bogdanm 0:9b334a45a8ff 412 @endverbatim
bogdanm 0:9b334a45a8ff 413 * @{
bogdanm 0:9b334a45a8ff 414 */
bogdanm 0:9b334a45a8ff 415
bogdanm 0:9b334a45a8ff 416 /**
bogdanm 0:9b334a45a8ff 417 * @brief Enable the Debug Module during SLEEP mode.
bogdanm 0:9b334a45a8ff 418 * @retval None
bogdanm 0:9b334a45a8ff 419 */
bogdanm 0:9b334a45a8ff 420 void HAL_DBGMCU_EnableDBGSleepMode(void)
bogdanm 0:9b334a45a8ff 421 {
bogdanm 0:9b334a45a8ff 422 SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
bogdanm 0:9b334a45a8ff 423 }
bogdanm 0:9b334a45a8ff 424
bogdanm 0:9b334a45a8ff 425 /**
bogdanm 0:9b334a45a8ff 426 * @brief Disable the Debug Module during SLEEP mode.
bogdanm 0:9b334a45a8ff 427 * @retval None
bogdanm 0:9b334a45a8ff 428 */
bogdanm 0:9b334a45a8ff 429 void HAL_DBGMCU_DisableDBGSleepMode(void)
bogdanm 0:9b334a45a8ff 430 {
bogdanm 0:9b334a45a8ff 431 CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
bogdanm 0:9b334a45a8ff 432 }
bogdanm 0:9b334a45a8ff 433
bogdanm 0:9b334a45a8ff 434 /**
bogdanm 0:9b334a45a8ff 435 * @brief Enable the Debug Module during STOP1/STOP2 modes.
bogdanm 0:9b334a45a8ff 436 * @retval None
bogdanm 0:9b334a45a8ff 437 */
bogdanm 0:9b334a45a8ff 438 void HAL_DBGMCU_EnableDBGStopMode(void)
bogdanm 0:9b334a45a8ff 439 {
bogdanm 0:9b334a45a8ff 440 SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
bogdanm 0:9b334a45a8ff 441 }
bogdanm 0:9b334a45a8ff 442
bogdanm 0:9b334a45a8ff 443 /**
bogdanm 0:9b334a45a8ff 444 * @brief Disable the Debug Module during STOP1/STOP2 modes.
bogdanm 0:9b334a45a8ff 445 * @retval None
bogdanm 0:9b334a45a8ff 446 */
bogdanm 0:9b334a45a8ff 447 void HAL_DBGMCU_DisableDBGStopMode(void)
bogdanm 0:9b334a45a8ff 448 {
bogdanm 0:9b334a45a8ff 449 CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
bogdanm 0:9b334a45a8ff 450 }
bogdanm 0:9b334a45a8ff 451
bogdanm 0:9b334a45a8ff 452 /**
bogdanm 0:9b334a45a8ff 453 * @brief Enable the Debug Module during STANDBY mode.
bogdanm 0:9b334a45a8ff 454 * @retval None
bogdanm 0:9b334a45a8ff 455 */
bogdanm 0:9b334a45a8ff 456 void HAL_DBGMCU_EnableDBGStandbyMode(void)
bogdanm 0:9b334a45a8ff 457 {
bogdanm 0:9b334a45a8ff 458 SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
bogdanm 0:9b334a45a8ff 459 }
bogdanm 0:9b334a45a8ff 460
bogdanm 0:9b334a45a8ff 461 /**
bogdanm 0:9b334a45a8ff 462 * @brief Disable the Debug Module during STANDBY mode.
bogdanm 0:9b334a45a8ff 463 * @retval None
bogdanm 0:9b334a45a8ff 464 */
bogdanm 0:9b334a45a8ff 465 void HAL_DBGMCU_DisableDBGStandbyMode(void)
bogdanm 0:9b334a45a8ff 466 {
bogdanm 0:9b334a45a8ff 467 CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
bogdanm 0:9b334a45a8ff 468 }
bogdanm 0:9b334a45a8ff 469
bogdanm 0:9b334a45a8ff 470 /**
bogdanm 0:9b334a45a8ff 471 * @}
bogdanm 0:9b334a45a8ff 472 */
bogdanm 0:9b334a45a8ff 473
bogdanm 0:9b334a45a8ff 474 /** @defgroup HAL_Exported_Functions_Group4 HAL SYSCFG configuration functions
bogdanm 0:9b334a45a8ff 475 * @brief HAL SYSCFG configuration functions
bogdanm 0:9b334a45a8ff 476 *
bogdanm 0:9b334a45a8ff 477 @verbatim
bogdanm 0:9b334a45a8ff 478 ===============================================================================
bogdanm 0:9b334a45a8ff 479 ##### HAL SYSCFG configuration functions #####
bogdanm 0:9b334a45a8ff 480 ===============================================================================
bogdanm 0:9b334a45a8ff 481 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 482 (+) Start a hardware SRAM2 erase operation
bogdanm 0:9b334a45a8ff 483 (+) Enable/Disable the Internal FLASH Bank Swapping
bogdanm 0:9b334a45a8ff 484 (+) Configure the Voltage reference buffer
bogdanm 0:9b334a45a8ff 485 (+) Enable/Disable the Voltage reference buffer
bogdanm 0:9b334a45a8ff 486
bogdanm 0:9b334a45a8ff 487 @endverbatim
bogdanm 0:9b334a45a8ff 488 * @{
bogdanm 0:9b334a45a8ff 489 */
bogdanm 0:9b334a45a8ff 490
bogdanm 0:9b334a45a8ff 491 /**
bogdanm 0:9b334a45a8ff 492 * @brief Start a hardware SRAM2 erase operation.
bogdanm 0:9b334a45a8ff 493 * @note As long as SRAM2 is not erased the SRAM2ER bit will be set.
bogdanm 0:9b334a45a8ff 494 * This bit is automatically reset at the end of the SRAM2 erase operation.
bogdanm 0:9b334a45a8ff 495 * @retval None
bogdanm 0:9b334a45a8ff 496 */
bogdanm 0:9b334a45a8ff 497 void HAL_SYSCFG_SRAM2Erase(void)
bogdanm 0:9b334a45a8ff 498 {
bogdanm 0:9b334a45a8ff 499 /* unlock the write protection of the SRAM2ER bit */
bogdanm 0:9b334a45a8ff 500 SYSCFG->SKR = 0xCA;
bogdanm 0:9b334a45a8ff 501 SYSCFG->SKR = 0x53;
bogdanm 0:9b334a45a8ff 502 /* Starts a hardware SRAM2 erase operation*/
bogdanm 0:9b334a45a8ff 503 *(__IO uint32_t *) SCSR_SRAM2ER_BB = (uint8_t)0x00000001;
bogdanm 0:9b334a45a8ff 504 }
bogdanm 0:9b334a45a8ff 505
bogdanm 0:9b334a45a8ff 506 /**
bogdanm 0:9b334a45a8ff 507 * @brief Enable the Internal FLASH Bank Swapping.
bogdanm 0:9b334a45a8ff 508 *
bogdanm 0:9b334a45a8ff 509 * @note This function can be used only for STM32L4xx devices.
bogdanm 0:9b334a45a8ff 510 *
bogdanm 0:9b334a45a8ff 511 * @note Flash Bank2 mapped at 0x08000000 (and aliased @0x00000000)
bogdanm 0:9b334a45a8ff 512 * and Flash Bank1 mapped at 0x08100000 (and aliased at 0x00100000)
bogdanm 0:9b334a45a8ff 513 *
bogdanm 0:9b334a45a8ff 514 * @retval None
bogdanm 0:9b334a45a8ff 515 */
bogdanm 0:9b334a45a8ff 516 void HAL_SYSCFG_EnableMemorySwappingBank(void)
bogdanm 0:9b334a45a8ff 517 {
bogdanm 0:9b334a45a8ff 518 *(__IO uint32_t *)FB_MODE_BB = (uint32_t)ENABLE;
bogdanm 0:9b334a45a8ff 519 }
bogdanm 0:9b334a45a8ff 520
bogdanm 0:9b334a45a8ff 521 /**
bogdanm 0:9b334a45a8ff 522 * @brief Disable the Internal FLASH Bank Swapping.
bogdanm 0:9b334a45a8ff 523 *
bogdanm 0:9b334a45a8ff 524 * @note This function can be used only for STM32L4xx devices.
bogdanm 0:9b334a45a8ff 525 *
bogdanm 0:9b334a45a8ff 526 * @note The default state : Flash Bank1 mapped at 0x08000000 (and aliased @0x0000 0000)
bogdanm 0:9b334a45a8ff 527 * and Flash Bank2 mapped at 0x08100000 (and aliased at 0x00100000)
bogdanm 0:9b334a45a8ff 528 *
bogdanm 0:9b334a45a8ff 529 * @retval None
bogdanm 0:9b334a45a8ff 530 */
bogdanm 0:9b334a45a8ff 531 void HAL_SYSCFG_DisableMemorySwappingBank(void)
bogdanm 0:9b334a45a8ff 532 {
bogdanm 0:9b334a45a8ff 533
bogdanm 0:9b334a45a8ff 534 *(__IO uint32_t *)FB_MODE_BB = (uint32_t)DISABLE;
bogdanm 0:9b334a45a8ff 535 }
bogdanm 0:9b334a45a8ff 536
bogdanm 0:9b334a45a8ff 537 /**
bogdanm 0:9b334a45a8ff 538 * @brief Configure the internal voltage reference buffer voltage scale.
bogdanm 0:9b334a45a8ff 539 * @param VoltageScaling: specifies the output voltage to achieve
bogdanm 0:9b334a45a8ff 540 * This parameter can be one of the following values:
bogdanm 0:9b334a45a8ff 541 * @arg SYSCFG_VREFBUF_VOLTAGE_SCALE0: VREF_OUT1 around 2.048 V.
bogdanm 0:9b334a45a8ff 542 * This requires VDDA equal to or higher than 2.4 V.
bogdanm 0:9b334a45a8ff 543 * @arg SYSCFG_VREFBUF_VOLTAGE_SCALE1: VREF_OUT1 around 2.5 V.
bogdanm 0:9b334a45a8ff 544 * This requires VDDA equal to or higher than 2.8 V.
bogdanm 0:9b334a45a8ff 545 * @retval None
bogdanm 0:9b334a45a8ff 546 */
bogdanm 0:9b334a45a8ff 547 void HAL_SYSCFG_VREFBUF_VoltageScalingConfig(uint32_t VoltageScaling)
bogdanm 0:9b334a45a8ff 548 {
bogdanm 0:9b334a45a8ff 549 /* Check the parameters */
bogdanm 0:9b334a45a8ff 550 assert_param(IS_SYSCFG_VREFBUF_VOLTAGE_SCALE(VoltageScaling));
bogdanm 0:9b334a45a8ff 551
bogdanm 0:9b334a45a8ff 552 MODIFY_REG(VREFBUF->CSR, VREFBUF_CSR_VRS, VoltageScaling);
bogdanm 0:9b334a45a8ff 553 }
bogdanm 0:9b334a45a8ff 554
bogdanm 0:9b334a45a8ff 555 /**
bogdanm 0:9b334a45a8ff 556 * @brief Configure the internal voltage reference buffer high impedance mode.
bogdanm 0:9b334a45a8ff 557 * @param Mode: specifies the high impedance mode
bogdanm 0:9b334a45a8ff 558 * This parameter can be one of the following values:
bogdanm 0:9b334a45a8ff 559 * @arg SYSCFG_VREFBUF_HIGH_IMPEDANCE_DISABLE: VREF+ pin is internally connect to VREFINT output.
bogdanm 0:9b334a45a8ff 560 * @arg SYSCFG_VREFBUF_HIGH_IMPEDANCE_ENABLE: VREF+ pin is high impedance.
bogdanm 0:9b334a45a8ff 561 * @retval None
bogdanm 0:9b334a45a8ff 562 */
bogdanm 0:9b334a45a8ff 563 void HAL_SYSCFG_VREFBUF_HighImpedanceConfig(uint32_t Mode)
bogdanm 0:9b334a45a8ff 564 {
bogdanm 0:9b334a45a8ff 565 /* Check the parameters */
bogdanm 0:9b334a45a8ff 566 assert_param(IS_SYSCFG_VREFBUF_HIGH_IMPEDANCE(Mode));
bogdanm 0:9b334a45a8ff 567
bogdanm 0:9b334a45a8ff 568 MODIFY_REG(VREFBUF->CSR, VREFBUF_CSR_HIZ, Mode);
bogdanm 0:9b334a45a8ff 569 }
bogdanm 0:9b334a45a8ff 570
bogdanm 0:9b334a45a8ff 571 /**
bogdanm 0:9b334a45a8ff 572 * @brief Tune the Internal Voltage Reference buffer (VREFBUF).
bogdanm 0:9b334a45a8ff 573 * @retval None
bogdanm 0:9b334a45a8ff 574 */
bogdanm 0:9b334a45a8ff 575 void HAL_SYSCFG_VREFBUF_TrimmingConfig(uint32_t TrimmingValue)
bogdanm 0:9b334a45a8ff 576 {
bogdanm 0:9b334a45a8ff 577 /* Check the parameters */
bogdanm 0:9b334a45a8ff 578 assert_param(IS_SYSCFG_VREFBUF_TRIMMING(TrimmingValue));
bogdanm 0:9b334a45a8ff 579
bogdanm 0:9b334a45a8ff 580 MODIFY_REG(VREFBUF->CCR, VREFBUF_CCR_TRIM, TrimmingValue);
bogdanm 0:9b334a45a8ff 581 }
bogdanm 0:9b334a45a8ff 582
bogdanm 0:9b334a45a8ff 583 /**
bogdanm 0:9b334a45a8ff 584 * @brief Enable the Internal Voltage Reference buffer (VREFBUF).
bogdanm 0:9b334a45a8ff 585 * @retval HAL_OK/HAL_TIMEOUT
bogdanm 0:9b334a45a8ff 586 */
bogdanm 0:9b334a45a8ff 587 HAL_StatusTypeDef HAL_SYSCFG_EnableVREFBUF(void)
bogdanm 0:9b334a45a8ff 588 {
bogdanm 0:9b334a45a8ff 589 uint32_t tickstart = 0;
bogdanm 0:9b334a45a8ff 590
bogdanm 0:9b334a45a8ff 591 SET_BIT(VREFBUF->CSR, VREFBUF_CSR_ENVR);
bogdanm 0:9b334a45a8ff 592
bogdanm 0:9b334a45a8ff 593 /* Get Start Tick*/
bogdanm 0:9b334a45a8ff 594 tickstart = HAL_GetTick();
bogdanm 0:9b334a45a8ff 595
bogdanm 0:9b334a45a8ff 596 /* Wait for VRR bit */
bogdanm 0:9b334a45a8ff 597 while(READ_BIT(VREFBUF->CSR, VREFBUF_CSR_VRR) == RESET)
bogdanm 0:9b334a45a8ff 598 {
bogdanm 0:9b334a45a8ff 599 if((HAL_GetTick() - tickstart) > VREFBUF_TIMEOUT_VALUE)
bogdanm 0:9b334a45a8ff 600 {
bogdanm 0:9b334a45a8ff 601 return HAL_TIMEOUT;
bogdanm 0:9b334a45a8ff 602 }
bogdanm 0:9b334a45a8ff 603 }
bogdanm 0:9b334a45a8ff 604
bogdanm 0:9b334a45a8ff 605 return HAL_OK;
bogdanm 0:9b334a45a8ff 606 }
bogdanm 0:9b334a45a8ff 607
bogdanm 0:9b334a45a8ff 608 /**
bogdanm 0:9b334a45a8ff 609 * @brief Disable the Internal Voltage Reference buffer (VREFBUF).
bogdanm 0:9b334a45a8ff 610 *
bogdanm 0:9b334a45a8ff 611 * @retval None
bogdanm 0:9b334a45a8ff 612 */
bogdanm 0:9b334a45a8ff 613 void HAL_SYSCFG_DisableVREFBUF(void)
bogdanm 0:9b334a45a8ff 614 {
bogdanm 0:9b334a45a8ff 615 CLEAR_BIT(VREFBUF->CSR, VREFBUF_CSR_ENVR);
bogdanm 0:9b334a45a8ff 616 }
bogdanm 0:9b334a45a8ff 617
bogdanm 0:9b334a45a8ff 618 /**
bogdanm 0:9b334a45a8ff 619 * @}
bogdanm 0:9b334a45a8ff 620 */
bogdanm 0:9b334a45a8ff 621
bogdanm 0:9b334a45a8ff 622 /**
bogdanm 0:9b334a45a8ff 623 * @}
bogdanm 0:9b334a45a8ff 624 */
bogdanm 0:9b334a45a8ff 625
bogdanm 0:9b334a45a8ff 626 #endif /* HAL_MODULE_ENABLED */
bogdanm 0:9b334a45a8ff 627 /**
bogdanm 0:9b334a45a8ff 628 * @}
bogdanm 0:9b334a45a8ff 629 */
bogdanm 0:9b334a45a8ff 630
bogdanm 0:9b334a45a8ff 631 /**
bogdanm 0:9b334a45a8ff 632 * @}
bogdanm 0:9b334a45a8ff 633 */
bogdanm 0:9b334a45a8ff 634
bogdanm 0:9b334a45a8ff 635 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/