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authorOxore <oxore@protonmail.com>2023-03-05 20:20:45 +0300
committerOxore <oxore@protonmail.com>2023-03-05 20:20:45 +0300
commitea807de65b0485ac58b6eae576209c64d4d5c4e9 (patch)
treeb4264d20e1d700cfd9e0ece9d847a825dd1dfc03 /Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_wwdg.c
parentdd01e7ed22cea652061f0d12cecf929e04b285e9 (diff)
Split app code and third party libraries
Diffstat (limited to 'Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_wwdg.c')
-rw-r--r--Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_wwdg.c303
1 files changed, 0 insertions, 303 deletions
diff --git a/Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_wwdg.c b/Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_wwdg.c
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--- a/Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_wwdg.c
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-/**
- ******************************************************************************
- * @file stm32f0xx_wwdg.c
- * @author MCD Application Team
- * @version V1.3.0
- * @date 16-January-2014
- * @brief This file provides firmware functions to manage the following
- * functionalities of the Window watchdog (WWDG) peripheral:
- * + Prescaler, Refresh window and Counter configuration
- * + WWDG activation
- * + Interrupts and flags management
- *
- * @verbatim
- *
- ==============================================================================
- ##### WWDG features #####
- ==============================================================================
- [..] Once enabled the WWDG generates a system reset on expiry of a programmed
- time period, unless the program refreshes the counter (downcounter)
- before to reach 0x3F value (i.e. a reset is generated when the counter
- value rolls over from 0x40 to 0x3F).
- [..] An MCU reset is also generated if the counter value is refreshed
- before the counter has reached the refresh window value. This
- implies that the counter must be refreshed in a limited window.
-
- [..] Once enabled the WWDG cannot be disabled except by a system reset.
-
- [..] WWDGRST flag in RCC_CSR register can be used to inform when a WWDG
- reset occurs.
-
- [..] The WWDG counter input clock is derived from the APB clock divided
- by a programmable prescaler.
-
- [..] WWDG counter clock = PCLK1 / Prescaler.
- [..] WWDG timeout = (WWDG counter clock) * (counter value).
-
- [..] Min-max timeout value @32MHz (PCLK1): ~85us / ~43ms.
-
- ##### How to use this driver #####
- ==============================================================================
- [..]
- (#) Enable WWDG clock using RCC_APB1PeriphClockCmd(RCC_APB1Periph_WWDG, ENABLE)
- function.
-
- (#) Configure the WWDG prescaler using WWDG_SetPrescaler() function.
-
- (#) Configure the WWDG refresh window using WWDG_SetWindowValue() function.
-
- (#) Set the WWDG counter value and start it using WWDG_Enable() function.
- When the WWDG is enabled the counter value should be configured to
- a value greater than 0x40 to prevent generating an immediate reset.
-
- (#) Optionally you can enable the Early wakeup interrupt which is
- generated when the counter reach 0x40.
- Once enabled this interrupt cannot be disabled except by a system reset.
-
- (#) Then the application program must refresh the WWDG counter at regular
- intervals during normal operation to prevent an MCU reset, using
- WWDG_SetCounter() function. This operation must occur only when
- the counter value is lower than the refresh window value,
- programmed using WWDG_SetWindowValue().
-
- * @endverbatim
- *
- ******************************************************************************
- * @attention
- *
- * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
- *
- * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
- * You may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.st.com/software_license_agreement_liberty_v2
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- ******************************************************************************
- */
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f0xx_wwdg.h"
-#include "stm32f0xx_rcc.h"
-
-/** @addtogroup STM32F0xx_StdPeriph_Driver
- * @{
- */
-
-/** @defgroup WWDG
- * @brief WWDG driver modules
- * @{
- */
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/* --------------------- WWDG registers bit mask ---------------------------- */
-/* CFR register bit mask */
-#define CFR_WDGTB_MASK ((uint32_t)0xFFFFFE7F)
-#define CFR_W_MASK ((uint32_t)0xFFFFFF80)
-#define BIT_MASK ((uint8_t)0x7F)
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/* Private functions ---------------------------------------------------------*/
-
-/** @defgroup WWDG_Private_Functions
- * @{
- */
-
-/** @defgroup WWDG_Group1 Prescaler, Refresh window and Counter configuration functions
- * @brief Prescaler, Refresh window and Counter configuration functions
- *
-@verbatim
- ==============================================================================
- ##### Prescaler, Refresh window and Counter configuration functions #####
- ==============================================================================
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Deinitializes the WWDG peripheral registers to their default reset values.
- * @param None
- * @retval None
- */
-void WWDG_DeInit(void)
-{
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_WWDG, ENABLE);
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_WWDG, DISABLE);
-}
-
-/**
- * @brief Sets the WWDG Prescaler.
- * @param WWDG_Prescaler: specifies the WWDG Prescaler.
- * This parameter can be one of the following values:
- * @arg WWDG_Prescaler_1: WWDG counter clock = (PCLK1/4096)/1
- * @arg WWDG_Prescaler_2: WWDG counter clock = (PCLK1/4096)/2
- * @arg WWDG_Prescaler_4: WWDG counter clock = (PCLK1/4096)/4
- * @arg WWDG_Prescaler_8: WWDG counter clock = (PCLK1/4096)/8
- * @retval None
- */
-void WWDG_SetPrescaler(uint32_t WWDG_Prescaler)
-{
- uint32_t tmpreg = 0;
- /* Check the parameters */
- assert_param(IS_WWDG_PRESCALER(WWDG_Prescaler));
- /* Clear WDGTB[1:0] bits */
- tmpreg = WWDG->CFR & CFR_WDGTB_MASK;
- /* Set WDGTB[1:0] bits according to WWDG_Prescaler value */
- tmpreg |= WWDG_Prescaler;
- /* Store the new value */
- WWDG->CFR = tmpreg;
-}
-
-/**
- * @brief Sets the WWDG window value.
- * @param WindowValue: specifies the window value to be compared to the downcounter.
- * This parameter value must be lower than 0x80.
- * @retval None
- */
-void WWDG_SetWindowValue(uint8_t WindowValue)
-{
- __IO uint32_t tmpreg = 0;
-
- /* Check the parameters */
- assert_param(IS_WWDG_WINDOW_VALUE(WindowValue));
- /* Clear W[6:0] bits */
-
- tmpreg = WWDG->CFR & CFR_W_MASK;
-
- /* Set W[6:0] bits according to WindowValue value */
- tmpreg |= WindowValue & (uint32_t) BIT_MASK;
-
- /* Store the new value */
- WWDG->CFR = tmpreg;
-}
-
-/**
- * @brief Enables the WWDG Early Wakeup interrupt(EWI).
- * @note Once enabled this interrupt cannot be disabled except by a system reset.
- * @param None
- * @retval None
- */
-void WWDG_EnableIT(void)
-{
- WWDG->CFR |= WWDG_CFR_EWI;
-}
-
-/**
- * @brief Sets the WWDG counter value.
- * @param Counter: specifies the watchdog counter value.
- * This parameter must be a number between 0x40 and 0x7F (to prevent
- * generating an immediate reset).
- * @retval None
- */
-void WWDG_SetCounter(uint8_t Counter)
-{
- /* Check the parameters */
- assert_param(IS_WWDG_COUNTER(Counter));
- /* Write to T[6:0] bits to configure the counter value, no need to do
- a read-modify-write; writing a 0 to WDGA bit does nothing */
- WWDG->CR = Counter & BIT_MASK;
-}
-
-/**
- * @}
- */
-
-/** @defgroup WWDG_Group2 WWDG activation functions
- * @brief WWDG activation functions
- *
-@verbatim
- ==============================================================================
- ##### WWDG activation function #####
- ==============================================================================
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Enables WWDG and load the counter value.
- * @param Counter: specifies the watchdog counter value.
- * This parameter must be a number between 0x40 and 0x7F (to prevent
- * generating an immediate reset).
- * @retval None
- */
-void WWDG_Enable(uint8_t Counter)
-{
- /* Check the parameters */
- assert_param(IS_WWDG_COUNTER(Counter));
- WWDG->CR = WWDG_CR_WDGA | Counter;
-}
-
-/**
- * @}
- */
-
-/** @defgroup WWDG_Group3 Interrupts and flags management functions
- * @brief Interrupts and flags management functions
- *
-@verbatim
- ==============================================================================
- ##### Interrupts and flags management functions #####
- ==============================================================================
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Checks whether the Early Wakeup interrupt flag is set or not.
- * @param None
- * @retval The new state of the Early Wakeup interrupt flag (SET or RESET).
- */
-FlagStatus WWDG_GetFlagStatus(void)
-{
- FlagStatus bitstatus = RESET;
-
- if ((WWDG->SR) != (uint32_t)RESET)
- {
- bitstatus = SET;
- }
- else
- {
- bitstatus = RESET;
- }
- return bitstatus;
-}
-
-/**
- * @brief Clears Early Wakeup interrupt flag.
- * @param None
- * @retval None
- */
-void WWDG_ClearFlag(void)
-{
- WWDG->SR = (uint32_t)RESET;
-}
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/