diff options
author | Oxore <oxore@protonmail.com> | 2023-03-05 20:20:45 +0300 |
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committer | Oxore <oxore@protonmail.com> | 2023-03-05 20:20:45 +0300 |
commit | ea807de65b0485ac58b6eae576209c64d4d5c4e9 (patch) | |
tree | b4264d20e1d700cfd9e0ece9d847a825dd1dfc03 /Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_wwdg.c | |
parent | dd01e7ed22cea652061f0d12cecf929e04b285e9 (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.c | 303 |
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 deleted file mode 100644 index ab92920..0000000 --- a/Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_wwdg.c +++ /dev/null @@ -1,303 +0,0 @@ -/** - ****************************************************************************** - * @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>© 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****/ |