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mbed SDK library sources

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Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_STM/TARGET_NUCLEO_F103RB/stm32f10x_wwdg.c@84:f54042cbc282, 2014-02-03 (annotated)

Committer:
mbed_official
Date:
Mon Feb 03 09:30:05 2014 +0000
Revision:
84:f54042cbc282
Parent:
70:c1fbde68b492 
Synchronized with git revision bbbd8699601c42149ccf0c37bc42bb6856ccc4c6



Full URL: https://github.com/mbedmicro/mbed/commit/bbbd8699601c42149ccf0c37bc42bb6856ccc4c6/



[NUCLEO_L152RE/F030_R8] SPI, I2C, Ticker, PWM updates

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 52:a51c77007319 1 /**
mbed_official 52:a51c77007319 2 ******************************************************************************
mbed_official 52:a51c77007319 3 * @file stm32f10x_wwdg.c
mbed_official 52:a51c77007319 4 * @author MCD Application Team
mbed_official 84:f54042cbc282 5 * @version V3.6.1
mbed_official 84:f54042cbc282 6 * @date 05-March-2012
mbed_official 52:a51c77007319 7 * @brief This file provides all the WWDG firmware functions.
mbed_official 70:c1fbde68b492 8 *******************************************************************************
mbed_official 70:c1fbde68b492 9 * Copyright (c) 2014, STMicroelectronics
mbed_official 70:c1fbde68b492 10 * All rights reserved.
mbed_official 70:c1fbde68b492 11 *
mbed_official 70:c1fbde68b492 12 * Redistribution and use in source and binary forms, with or without
mbed_official 70:c1fbde68b492 13 * modification, are permitted provided that the following conditions are met:
mbed_official 70:c1fbde68b492 14 *
mbed_official 70:c1fbde68b492 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 70:c1fbde68b492 16 * this list of conditions and the following disclaimer.
mbed_official 70:c1fbde68b492 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 70:c1fbde68b492 18 * this list of conditions and the following disclaimer in the documentation
mbed_official 70:c1fbde68b492 19 * and/or other materials provided with the distribution.
mbed_official 70:c1fbde68b492 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 70:c1fbde68b492 21 * may be used to endorse or promote products derived from this software
mbed_official 70:c1fbde68b492 22 * without specific prior written permission.
mbed_official 70:c1fbde68b492 23 *
mbed_official 70:c1fbde68b492 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 70:c1fbde68b492 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 70:c1fbde68b492 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 70:c1fbde68b492 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 70:c1fbde68b492 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 70:c1fbde68b492 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 70:c1fbde68b492 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 70:c1fbde68b492 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 70:c1fbde68b492 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 70:c1fbde68b492 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 70:c1fbde68b492 34 *******************************************************************************
mbed_official 70:c1fbde68b492 35 */
mbed_official 52:a51c77007319 36
mbed_official 52:a51c77007319 37 /* Includes ------------------------------------------------------------------*/
mbed_official 52:a51c77007319 38 #include "stm32f10x_wwdg.h"
mbed_official 52:a51c77007319 39 #include "stm32f10x_rcc.h"
mbed_official 52:a51c77007319 40
mbed_official 52:a51c77007319 41 /** @addtogroup STM32F10x_StdPeriph_Driver
mbed_official 52:a51c77007319 42 * @{
mbed_official 52:a51c77007319 43 */
mbed_official 52:a51c77007319 44
mbed_official 52:a51c77007319 45 /** @defgroup WWDG
mbed_official 52:a51c77007319 46 * @brief WWDG driver modules
mbed_official 52:a51c77007319 47 * @{
mbed_official 52:a51c77007319 48 */
mbed_official 52:a51c77007319 49
mbed_official 52:a51c77007319 50 /** @defgroup WWDG_Private_TypesDefinitions
mbed_official 52:a51c77007319 51 * @{
mbed_official 52:a51c77007319 52 */
mbed_official 52:a51c77007319 53
mbed_official 52:a51c77007319 54 /**
mbed_official 52:a51c77007319 55 * @}
mbed_official 52:a51c77007319 56 */
mbed_official 52:a51c77007319 57
mbed_official 52:a51c77007319 58 /** @defgroup WWDG_Private_Defines
mbed_official 52:a51c77007319 59 * @{
mbed_official 52:a51c77007319 60 */
mbed_official 52:a51c77007319 61
mbed_official 52:a51c77007319 62 /* ----------- WWDG registers bit address in the alias region ----------- */
mbed_official 52:a51c77007319 63 #define WWDG_OFFSET (WWDG_BASE - PERIPH_BASE)
mbed_official 52:a51c77007319 64
mbed_official 52:a51c77007319 65 /* Alias word address of EWI bit */
mbed_official 52:a51c77007319 66 #define CFR_OFFSET (WWDG_OFFSET + 0x04)
mbed_official 52:a51c77007319 67 #define EWI_BitNumber 0x09
mbed_official 52:a51c77007319 68 #define CFR_EWI_BB (PERIPH_BB_BASE + (CFR_OFFSET * 32) + (EWI_BitNumber * 4))
mbed_official 52:a51c77007319 69
mbed_official 52:a51c77007319 70 /* --------------------- WWDG registers bit mask ------------------------ */
mbed_official 52:a51c77007319 71
mbed_official 52:a51c77007319 72 /* CR register bit mask */
mbed_official 52:a51c77007319 73 #define CR_WDGA_Set ((uint32_t)0x00000080)
mbed_official 52:a51c77007319 74
mbed_official 52:a51c77007319 75 /* CFR register bit mask */
mbed_official 52:a51c77007319 76 #define CFR_WDGTB_Mask ((uint32_t)0xFFFFFE7F)
mbed_official 52:a51c77007319 77 #define CFR_W_Mask ((uint32_t)0xFFFFFF80)
mbed_official 52:a51c77007319 78 #define BIT_Mask ((uint8_t)0x7F)
mbed_official 52:a51c77007319 79
mbed_official 52:a51c77007319 80 /**
mbed_official 52:a51c77007319 81 * @}
mbed_official 52:a51c77007319 82 */
mbed_official 52:a51c77007319 83
mbed_official 52:a51c77007319 84 /** @defgroup WWDG_Private_Macros
mbed_official 52:a51c77007319 85 * @{
mbed_official 52:a51c77007319 86 */
mbed_official 52:a51c77007319 87
mbed_official 52:a51c77007319 88 /**
mbed_official 52:a51c77007319 89 * @}
mbed_official 52:a51c77007319 90 */
mbed_official 52:a51c77007319 91
mbed_official 52:a51c77007319 92 /** @defgroup WWDG_Private_Variables
mbed_official 52:a51c77007319 93 * @{
mbed_official 52:a51c77007319 94 */
mbed_official 52:a51c77007319 95
mbed_official 52:a51c77007319 96 /**
mbed_official 52:a51c77007319 97 * @}
mbed_official 52:a51c77007319 98 */
mbed_official 52:a51c77007319 99
mbed_official 52:a51c77007319 100 /** @defgroup WWDG_Private_FunctionPrototypes
mbed_official 52:a51c77007319 101 * @{
mbed_official 52:a51c77007319 102 */
mbed_official 52:a51c77007319 103
mbed_official 52:a51c77007319 104 /**
mbed_official 52:a51c77007319 105 * @}
mbed_official 52:a51c77007319 106 */
mbed_official 52:a51c77007319 107
mbed_official 52:a51c77007319 108 /** @defgroup WWDG_Private_Functions
mbed_official 52:a51c77007319 109 * @{
mbed_official 52:a51c77007319 110 */
mbed_official 52:a51c77007319 111
mbed_official 52:a51c77007319 112 /**
mbed_official 52:a51c77007319 113 * @brief Deinitializes the WWDG peripheral registers to their default reset values.
mbed_official 52:a51c77007319 114 * @param None
mbed_official 52:a51c77007319 115 * @retval None
mbed_official 52:a51c77007319 116 */
mbed_official 52:a51c77007319 117 void WWDG_DeInit(void)
mbed_official 52:a51c77007319 118 {
mbed_official 52:a51c77007319 119 RCC_APB1PeriphResetCmd(RCC_APB1Periph_WWDG, ENABLE);
mbed_official 52:a51c77007319 120 RCC_APB1PeriphResetCmd(RCC_APB1Periph_WWDG, DISABLE);
mbed_official 52:a51c77007319 121 }
mbed_official 52:a51c77007319 122
mbed_official 52:a51c77007319 123 /**
mbed_official 52:a51c77007319 124 * @brief Sets the WWDG Prescaler.
mbed_official 52:a51c77007319 125 * @param WWDG_Prescaler: specifies the WWDG Prescaler.
mbed_official 52:a51c77007319 126 * This parameter can be one of the following values:
mbed_official 52:a51c77007319 127 * @arg WWDG_Prescaler_1: WWDG counter clock = (PCLK1/4096)/1
mbed_official 52:a51c77007319 128 * @arg WWDG_Prescaler_2: WWDG counter clock = (PCLK1/4096)/2
mbed_official 52:a51c77007319 129 * @arg WWDG_Prescaler_4: WWDG counter clock = (PCLK1/4096)/4
mbed_official 52:a51c77007319 130 * @arg WWDG_Prescaler_8: WWDG counter clock = (PCLK1/4096)/8
mbed_official 52:a51c77007319 131 * @retval None
mbed_official 52:a51c77007319 132 */
mbed_official 52:a51c77007319 133 void WWDG_SetPrescaler(uint32_t WWDG_Prescaler)
mbed_official 52:a51c77007319 134 {
mbed_official 52:a51c77007319 135 uint32_t tmpreg = 0;
mbed_official 52:a51c77007319 136 /* Check the parameters */
mbed_official 52:a51c77007319 137 assert_param(IS_WWDG_PRESCALER(WWDG_Prescaler));
mbed_official 52:a51c77007319 138 /* Clear WDGTB[1:0] bits */
mbed_official 52:a51c77007319 139 tmpreg = WWDG->CFR & CFR_WDGTB_Mask;
mbed_official 52:a51c77007319 140 /* Set WDGTB[1:0] bits according to WWDG_Prescaler value */
mbed_official 52:a51c77007319 141 tmpreg |= WWDG_Prescaler;
mbed_official 52:a51c77007319 142 /* Store the new value */
mbed_official 52:a51c77007319 143 WWDG->CFR = tmpreg;
mbed_official 52:a51c77007319 144 }
mbed_official 52:a51c77007319 145
mbed_official 52:a51c77007319 146 /**
mbed_official 52:a51c77007319 147 * @brief Sets the WWDG window value.
mbed_official 52:a51c77007319 148 * @param WindowValue: specifies the window value to be compared to the downcounter.
mbed_official 52:a51c77007319 149 * This parameter value must be lower than 0x80.
mbed_official 52:a51c77007319 150 * @retval None
mbed_official 52:a51c77007319 151 */
mbed_official 52:a51c77007319 152 void WWDG_SetWindowValue(uint8_t WindowValue)
mbed_official 52:a51c77007319 153 {
mbed_official 52:a51c77007319 154 __IO uint32_t tmpreg = 0;
mbed_official 52:a51c77007319 155
mbed_official 52:a51c77007319 156 /* Check the parameters */
mbed_official 52:a51c77007319 157 assert_param(IS_WWDG_WINDOW_VALUE(WindowValue));
mbed_official 52:a51c77007319 158 /* Clear W[6:0] bits */
mbed_official 52:a51c77007319 159
mbed_official 52:a51c77007319 160 tmpreg = WWDG->CFR & CFR_W_Mask;
mbed_official 52:a51c77007319 161
mbed_official 52:a51c77007319 162 /* Set W[6:0] bits according to WindowValue value */
mbed_official 52:a51c77007319 163 tmpreg |= WindowValue & (uint32_t) BIT_Mask;
mbed_official 52:a51c77007319 164
mbed_official 52:a51c77007319 165 /* Store the new value */
mbed_official 52:a51c77007319 166 WWDG->CFR = tmpreg;
mbed_official 52:a51c77007319 167 }
mbed_official 52:a51c77007319 168
mbed_official 52:a51c77007319 169 /**
mbed_official 52:a51c77007319 170 * @brief Enables the WWDG Early Wakeup interrupt(EWI).
mbed_official 52:a51c77007319 171 * @param None
mbed_official 52:a51c77007319 172 * @retval None
mbed_official 52:a51c77007319 173 */
mbed_official 52:a51c77007319 174 void WWDG_EnableIT(void)
mbed_official 52:a51c77007319 175 {
mbed_official 52:a51c77007319 176 *(__IO uint32_t *) CFR_EWI_BB = (uint32_t)ENABLE;
mbed_official 52:a51c77007319 177 }
mbed_official 52:a51c77007319 178
mbed_official 52:a51c77007319 179 /**
mbed_official 52:a51c77007319 180 * @brief Sets the WWDG counter value.
mbed_official 52:a51c77007319 181 * @param Counter: specifies the watchdog counter value.
mbed_official 52:a51c77007319 182 * This parameter must be a number between 0x40 and 0x7F.
mbed_official 52:a51c77007319 183 * @retval None
mbed_official 52:a51c77007319 184 */
mbed_official 52:a51c77007319 185 void WWDG_SetCounter(uint8_t Counter)
mbed_official 52:a51c77007319 186 {
mbed_official 52:a51c77007319 187 /* Check the parameters */
mbed_official 52:a51c77007319 188 assert_param(IS_WWDG_COUNTER(Counter));
mbed_official 52:a51c77007319 189 /* Write to T[6:0] bits to configure the counter value, no need to do
mbed_official 52:a51c77007319 190 a read-modify-write; writing a 0 to WDGA bit does nothing */
mbed_official 52:a51c77007319 191 WWDG->CR = Counter & BIT_Mask;
mbed_official 52:a51c77007319 192 }
mbed_official 52:a51c77007319 193
mbed_official 52:a51c77007319 194 /**
mbed_official 52:a51c77007319 195 * @brief Enables WWDG and load the counter value.
mbed_official 52:a51c77007319 196 * @param Counter: specifies the watchdog counter value.
mbed_official 52:a51c77007319 197 * This parameter must be a number between 0x40 and 0x7F.
mbed_official 52:a51c77007319 198 * @retval None
mbed_official 52:a51c77007319 199 */
mbed_official 52:a51c77007319 200 void WWDG_Enable(uint8_t Counter)
mbed_official 52:a51c77007319 201 {
mbed_official 52:a51c77007319 202 /* Check the parameters */
mbed_official 52:a51c77007319 203 assert_param(IS_WWDG_COUNTER(Counter));
mbed_official 52:a51c77007319 204 WWDG->CR = CR_WDGA_Set | Counter;
mbed_official 52:a51c77007319 205 }
mbed_official 52:a51c77007319 206
mbed_official 52:a51c77007319 207 /**
mbed_official 52:a51c77007319 208 * @brief Checks whether the Early Wakeup interrupt flag is set or not.
mbed_official 52:a51c77007319 209 * @param None
mbed_official 52:a51c77007319 210 * @retval The new state of the Early Wakeup interrupt flag (SET or RESET)
mbed_official 52:a51c77007319 211 */
mbed_official 52:a51c77007319 212 FlagStatus WWDG_GetFlagStatus(void)
mbed_official 52:a51c77007319 213 {
mbed_official 52:a51c77007319 214 return (FlagStatus)(WWDG->SR);
mbed_official 52:a51c77007319 215 }
mbed_official 52:a51c77007319 216
mbed_official 52:a51c77007319 217 /**
mbed_official 52:a51c77007319 218 * @brief Clears Early Wakeup interrupt flag.
mbed_official 52:a51c77007319 219 * @param None
mbed_official 52:a51c77007319 220 * @retval None
mbed_official 52:a51c77007319 221 */
mbed_official 52:a51c77007319 222 void WWDG_ClearFlag(void)
mbed_official 52:a51c77007319 223 {
mbed_official 52:a51c77007319 224 WWDG->SR = (uint32_t)RESET;
mbed_official 52:a51c77007319 225 }
mbed_official 52:a51c77007319 226
mbed_official 52:a51c77007319 227 /**
mbed_official 52:a51c77007319 228 * @}
mbed_official 52:a51c77007319 229 */
mbed_official 52:a51c77007319 230
mbed_official 52:a51c77007319 231 /**
mbed_official 52:a51c77007319 232 * @}
mbed_official 52:a51c77007319 233 */
mbed_official 52:a51c77007319 234
mbed_official 52:a51c77007319 235 /**
mbed_official 52:a51c77007319 236 * @}
mbed_official 52:a51c77007319 237 */
mbed_official 52:a51c77007319 238
mbed_official 84:f54042cbc282 239 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/