shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

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targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_iwdg.c@323:9e901b0a5aa1, 2014-09-13 (annotated)

Committer:
shaoziyang
Date:
Sat Sep 13 14:25:46 2014 +0000
Revision:
323:9e901b0a5aa1
Parent:
126:549ba18ddd81 
test with CLOCK_SETUP = 0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 126:549ba18ddd81 1 /**
mbed_official 126:549ba18ddd81 2 ******************************************************************************
mbed_official 126:549ba18ddd81 3 * @file stm32f10x_iwdg.c
mbed_official 126:549ba18ddd81 4 * @author MCD Application Team
mbed_official 126:549ba18ddd81 5 * @version V3.6.1
mbed_official 126:549ba18ddd81 6 * @date 05-March-2012
mbed_official 126:549ba18ddd81 7 * @brief This file provides all the IWDG firmware functions.
mbed_official 126:549ba18ddd81 8 *******************************************************************************
mbed_official 126:549ba18ddd81 9 * Copyright (c) 2014, STMicroelectronics
mbed_official 126:549ba18ddd81 10 * All rights reserved.
mbed_official 126:549ba18ddd81 11 *
mbed_official 126:549ba18ddd81 12 * Redistribution and use in source and binary forms, with or without
mbed_official 126:549ba18ddd81 13 * modification, are permitted provided that the following conditions are met:
mbed_official 126:549ba18ddd81 14 *
mbed_official 126:549ba18ddd81 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 126:549ba18ddd81 16 * this list of conditions and the following disclaimer.
mbed_official 126:549ba18ddd81 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 126:549ba18ddd81 18 * this list of conditions and the following disclaimer in the documentation
mbed_official 126:549ba18ddd81 19 * and/or other materials provided with the distribution.
mbed_official 126:549ba18ddd81 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 126:549ba18ddd81 21 * may be used to endorse or promote products derived from this software
mbed_official 126:549ba18ddd81 22 * without specific prior written permission.
mbed_official 126:549ba18ddd81 23 *
mbed_official 126:549ba18ddd81 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 126:549ba18ddd81 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 126:549ba18ddd81 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 126:549ba18ddd81 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 126:549ba18ddd81 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 126:549ba18ddd81 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 126:549ba18ddd81 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 126:549ba18ddd81 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 126:549ba18ddd81 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 126:549ba18ddd81 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 126:549ba18ddd81 34 *******************************************************************************
mbed_official 126:549ba18ddd81 35 */
mbed_official 126:549ba18ddd81 36
mbed_official 126:549ba18ddd81 37 /* Includes ------------------------------------------------------------------*/
mbed_official 126:549ba18ddd81 38 #include "stm32f10x_iwdg.h"
mbed_official 126:549ba18ddd81 39
mbed_official 126:549ba18ddd81 40 /** @addtogroup STM32F10x_StdPeriph_Driver
mbed_official 126:549ba18ddd81 41 * @{
mbed_official 126:549ba18ddd81 42 */
mbed_official 126:549ba18ddd81 43
mbed_official 126:549ba18ddd81 44 /** @defgroup IWDG
mbed_official 126:549ba18ddd81 45 * @brief IWDG driver modules
mbed_official 126:549ba18ddd81 46 * @{
mbed_official 126:549ba18ddd81 47 */
mbed_official 126:549ba18ddd81 48
mbed_official 126:549ba18ddd81 49 /** @defgroup IWDG_Private_TypesDefinitions
mbed_official 126:549ba18ddd81 50 * @{
mbed_official 126:549ba18ddd81 51 */
mbed_official 126:549ba18ddd81 52
mbed_official 126:549ba18ddd81 53 /**
mbed_official 126:549ba18ddd81 54 * @}
mbed_official 126:549ba18ddd81 55 */
mbed_official 126:549ba18ddd81 56
mbed_official 126:549ba18ddd81 57 /** @defgroup IWDG_Private_Defines
mbed_official 126:549ba18ddd81 58 * @{
mbed_official 126:549ba18ddd81 59 */
mbed_official 126:549ba18ddd81 60
mbed_official 126:549ba18ddd81 61 /* ---------------------- IWDG registers bit mask ----------------------------*/
mbed_official 126:549ba18ddd81 62
mbed_official 126:549ba18ddd81 63 /* KR register bit mask */
mbed_official 126:549ba18ddd81 64 #define KR_KEY_Reload ((uint16_t)0xAAAA)
mbed_official 126:549ba18ddd81 65 #define KR_KEY_Enable ((uint16_t)0xCCCC)
mbed_official 126:549ba18ddd81 66
mbed_official 126:549ba18ddd81 67 /**
mbed_official 126:549ba18ddd81 68 * @}
mbed_official 126:549ba18ddd81 69 */
mbed_official 126:549ba18ddd81 70
mbed_official 126:549ba18ddd81 71 /** @defgroup IWDG_Private_Macros
mbed_official 126:549ba18ddd81 72 * @{
mbed_official 126:549ba18ddd81 73 */
mbed_official 126:549ba18ddd81 74
mbed_official 126:549ba18ddd81 75 /**
mbed_official 126:549ba18ddd81 76 * @}
mbed_official 126:549ba18ddd81 77 */
mbed_official 126:549ba18ddd81 78
mbed_official 126:549ba18ddd81 79 /** @defgroup IWDG_Private_Variables
mbed_official 126:549ba18ddd81 80 * @{
mbed_official 126:549ba18ddd81 81 */
mbed_official 126:549ba18ddd81 82
mbed_official 126:549ba18ddd81 83 /**
mbed_official 126:549ba18ddd81 84 * @}
mbed_official 126:549ba18ddd81 85 */
mbed_official 126:549ba18ddd81 86
mbed_official 126:549ba18ddd81 87 /** @defgroup IWDG_Private_FunctionPrototypes
mbed_official 126:549ba18ddd81 88 * @{
mbed_official 126:549ba18ddd81 89 */
mbed_official 126:549ba18ddd81 90
mbed_official 126:549ba18ddd81 91 /**
mbed_official 126:549ba18ddd81 92 * @}
mbed_official 126:549ba18ddd81 93 */
mbed_official 126:549ba18ddd81 94
mbed_official 126:549ba18ddd81 95 /** @defgroup IWDG_Private_Functions
mbed_official 126:549ba18ddd81 96 * @{
mbed_official 126:549ba18ddd81 97 */
mbed_official 126:549ba18ddd81 98
mbed_official 126:549ba18ddd81 99 /**
mbed_official 126:549ba18ddd81 100 * @brief Enables or disables write access to IWDG_PR and IWDG_RLR registers.
mbed_official 126:549ba18ddd81 101 * @param IWDG_WriteAccess: new state of write access to IWDG_PR and IWDG_RLR registers.
mbed_official 126:549ba18ddd81 102 * This parameter can be one of the following values:
mbed_official 126:549ba18ddd81 103 * @arg IWDG_WriteAccess_Enable: Enable write access to IWDG_PR and IWDG_RLR registers
mbed_official 126:549ba18ddd81 104 * @arg IWDG_WriteAccess_Disable: Disable write access to IWDG_PR and IWDG_RLR registers
mbed_official 126:549ba18ddd81 105 * @retval None
mbed_official 126:549ba18ddd81 106 */
mbed_official 126:549ba18ddd81 107 void IWDG_WriteAccessCmd(uint16_t IWDG_WriteAccess)
mbed_official 126:549ba18ddd81 108 {
mbed_official 126:549ba18ddd81 109 /* Check the parameters */
mbed_official 126:549ba18ddd81 110 assert_param(IS_IWDG_WRITE_ACCESS(IWDG_WriteAccess));
mbed_official 126:549ba18ddd81 111 IWDG->KR = IWDG_WriteAccess;
mbed_official 126:549ba18ddd81 112 }
mbed_official 126:549ba18ddd81 113
mbed_official 126:549ba18ddd81 114 /**
mbed_official 126:549ba18ddd81 115 * @brief Sets IWDG Prescaler value.
mbed_official 126:549ba18ddd81 116 * @param IWDG_Prescaler: specifies the IWDG Prescaler value.
mbed_official 126:549ba18ddd81 117 * This parameter can be one of the following values:
mbed_official 126:549ba18ddd81 118 * @arg IWDG_Prescaler_4: IWDG prescaler set to 4
mbed_official 126:549ba18ddd81 119 * @arg IWDG_Prescaler_8: IWDG prescaler set to 8
mbed_official 126:549ba18ddd81 120 * @arg IWDG_Prescaler_16: IWDG prescaler set to 16
mbed_official 126:549ba18ddd81 121 * @arg IWDG_Prescaler_32: IWDG prescaler set to 32
mbed_official 126:549ba18ddd81 122 * @arg IWDG_Prescaler_64: IWDG prescaler set to 64
mbed_official 126:549ba18ddd81 123 * @arg IWDG_Prescaler_128: IWDG prescaler set to 128
mbed_official 126:549ba18ddd81 124 * @arg IWDG_Prescaler_256: IWDG prescaler set to 256
mbed_official 126:549ba18ddd81 125 * @retval None
mbed_official 126:549ba18ddd81 126 */
mbed_official 126:549ba18ddd81 127 void IWDG_SetPrescaler(uint8_t IWDG_Prescaler)
mbed_official 126:549ba18ddd81 128 {
mbed_official 126:549ba18ddd81 129 /* Check the parameters */
mbed_official 126:549ba18ddd81 130 assert_param(IS_IWDG_PRESCALER(IWDG_Prescaler));
mbed_official 126:549ba18ddd81 131 IWDG->PR = IWDG_Prescaler;
mbed_official 126:549ba18ddd81 132 }
mbed_official 126:549ba18ddd81 133
mbed_official 126:549ba18ddd81 134 /**
mbed_official 126:549ba18ddd81 135 * @brief Sets IWDG Reload value.
mbed_official 126:549ba18ddd81 136 * @param Reload: specifies the IWDG Reload value.
mbed_official 126:549ba18ddd81 137 * This parameter must be a number between 0 and 0x0FFF.
mbed_official 126:549ba18ddd81 138 * @retval None
mbed_official 126:549ba18ddd81 139 */
mbed_official 126:549ba18ddd81 140 void IWDG_SetReload(uint16_t Reload)
mbed_official 126:549ba18ddd81 141 {
mbed_official 126:549ba18ddd81 142 /* Check the parameters */
mbed_official 126:549ba18ddd81 143 assert_param(IS_IWDG_RELOAD(Reload));
mbed_official 126:549ba18ddd81 144 IWDG->RLR = Reload;
mbed_official 126:549ba18ddd81 145 }
mbed_official 126:549ba18ddd81 146
mbed_official 126:549ba18ddd81 147 /**
mbed_official 126:549ba18ddd81 148 * @brief Reloads IWDG counter with value defined in the reload register
mbed_official 126:549ba18ddd81 149 * (write access to IWDG_PR and IWDG_RLR registers disabled).
mbed_official 126:549ba18ddd81 150 * @param None
mbed_official 126:549ba18ddd81 151 * @retval None
mbed_official 126:549ba18ddd81 152 */
mbed_official 126:549ba18ddd81 153 void IWDG_ReloadCounter(void)
mbed_official 126:549ba18ddd81 154 {
mbed_official 126:549ba18ddd81 155 IWDG->KR = KR_KEY_Reload;
mbed_official 126:549ba18ddd81 156 }
mbed_official 126:549ba18ddd81 157
mbed_official 126:549ba18ddd81 158 /**
mbed_official 126:549ba18ddd81 159 * @brief Enables IWDG (write access to IWDG_PR and IWDG_RLR registers disabled).
mbed_official 126:549ba18ddd81 160 * @param None
mbed_official 126:549ba18ddd81 161 * @retval None
mbed_official 126:549ba18ddd81 162 */
mbed_official 126:549ba18ddd81 163 void IWDG_Enable(void)
mbed_official 126:549ba18ddd81 164 {
mbed_official 126:549ba18ddd81 165 IWDG->KR = KR_KEY_Enable;
mbed_official 126:549ba18ddd81 166 }
mbed_official 126:549ba18ddd81 167
mbed_official 126:549ba18ddd81 168 /**
mbed_official 126:549ba18ddd81 169 * @brief Checks whether the specified IWDG flag is set or not.
mbed_official 126:549ba18ddd81 170 * @param IWDG_FLAG: specifies the flag to check.
mbed_official 126:549ba18ddd81 171 * This parameter can be one of the following values:
mbed_official 126:549ba18ddd81 172 * @arg IWDG_FLAG_PVU: Prescaler Value Update on going
mbed_official 126:549ba18ddd81 173 * @arg IWDG_FLAG_RVU: Reload Value Update on going
mbed_official 126:549ba18ddd81 174 * @retval The new state of IWDG_FLAG (SET or RESET).
mbed_official 126:549ba18ddd81 175 */
mbed_official 126:549ba18ddd81 176 FlagStatus IWDG_GetFlagStatus(uint16_t IWDG_FLAG)
mbed_official 126:549ba18ddd81 177 {
mbed_official 126:549ba18ddd81 178 FlagStatus bitstatus = RESET;
mbed_official 126:549ba18ddd81 179 /* Check the parameters */
mbed_official 126:549ba18ddd81 180 assert_param(IS_IWDG_FLAG(IWDG_FLAG));
mbed_official 126:549ba18ddd81 181 if ((IWDG->SR & IWDG_FLAG) != (uint32_t)RESET)
mbed_official 126:549ba18ddd81 182 {
mbed_official 126:549ba18ddd81 183 bitstatus = SET;
mbed_official 126:549ba18ddd81 184 }
mbed_official 126:549ba18ddd81 185 else
mbed_official 126:549ba18ddd81 186 {
mbed_official 126:549ba18ddd81 187 bitstatus = RESET;
mbed_official 126:549ba18ddd81 188 }
mbed_official 126:549ba18ddd81 189 /* Return the flag status */
mbed_official 126:549ba18ddd81 190 return bitstatus;
mbed_official 126:549ba18ddd81 191 }
mbed_official 126:549ba18ddd81 192
mbed_official 126:549ba18ddd81 193 /**
mbed_official 126:549ba18ddd81 194 * @}
mbed_official 126:549ba18ddd81 195 */
mbed_official 126:549ba18ddd81 196
mbed_official 126:549ba18ddd81 197 /**
mbed_official 126:549ba18ddd81 198 * @}
mbed_official 126:549ba18ddd81 199 */
mbed_official 126:549ba18ddd81 200
mbed_official 126:549ba18ddd81 201 /**
mbed_official 126:549ba18ddd81 202 * @}
mbed_official 126:549ba18ddd81 203 */
mbed_official 126:549ba18ddd81 204
mbed_official 126:549ba18ddd81 205 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/