From b0f0d2e9ca18d8604225bed3c984e4cf1b4c4b3c Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Wed, 10 Feb 2016 20:31:09 +0100 Subject: Initial import --- .../src/stm32f10x_wwdg.c | 223 +++++++++++++++++++++ 1 file changed, 223 insertions(+) create mode 100644 Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_wwdg.c (limited to 'Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_wwdg.c') diff --git a/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_wwdg.c b/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_wwdg.c new file mode 100644 index 0000000..cd4978b --- /dev/null +++ b/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_wwdg.c @@ -0,0 +1,223 @@ +/** + ****************************************************************************** + * @file stm32f10x_wwdg.c + * @author MCD Application Team + * @version V3.3.0 + * @date 04/16/2010 + * @brief This file provides all the WWDG firmware functions. + ****************************************************************************** + * @copy + * + * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS + * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE + * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY + * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING + * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE + * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. + * + *

© COPYRIGHT 2010 STMicroelectronics

+ */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x_wwdg.h" +#include "stm32f10x_rcc.h" + +/** @addtogroup STM32F10x_StdPeriph_Driver + * @{ + */ + +/** @defgroup WWDG + * @brief WWDG driver modules + * @{ + */ + +/** @defgroup WWDG_Private_TypesDefinitions + * @{ + */ + +/** + * @} + */ + +/** @defgroup WWDG_Private_Defines + * @{ + */ + +/* ----------- WWDG registers bit address in the alias region ----------- */ +#define WWDG_OFFSET (WWDG_BASE - PERIPH_BASE) + +/* Alias word address of EWI bit */ +#define CFR_OFFSET (WWDG_OFFSET + 0x04) +#define EWI_BitNumber 0x09 +#define CFR_EWI_BB (PERIPH_BB_BASE + (CFR_OFFSET * 32) + (EWI_BitNumber * 4)) + +/* --------------------- WWDG registers bit mask ------------------------ */ + +/* CR register bit mask */ +#define CR_WDGA_Set ((uint32_t)0x00000080) + +/* CFR register bit mask */ +#define CFR_WDGTB_Mask ((uint32_t)0xFFFFFE7F) +#define CFR_W_Mask ((uint32_t)0xFFFFFF80) +#define BIT_Mask ((uint8_t)0x7F) + +/** + * @} + */ + +/** @defgroup WWDG_Private_Macros + * @{ + */ + +/** + * @} + */ + +/** @defgroup WWDG_Private_Variables + * @{ + */ + +/** + * @} + */ + +/** @defgroup WWDG_Private_FunctionPrototypes + * @{ + */ + +/** + * @} + */ + +/** @defgroup WWDG_Private_Functions + * @{ + */ + +/** + * @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). + * @param None + * @retval None + */ +void WWDG_EnableIT(void) +{ + *(__IO uint32_t *) CFR_EWI_BB = (uint32_t)ENABLE; +} + +/** + * @brief Sets the WWDG counter value. + * @param Counter: specifies the watchdog counter value. + * This parameter must be a number between 0x40 and 0x7F. + * @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; +} + +/** + * @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. + * @retval None + */ +void WWDG_Enable(uint8_t Counter) +{ + /* Check the parameters */ + assert_param(IS_WWDG_COUNTER(Counter)); + WWDG->CR = CR_WDGA_Set | Counter; +} + +/** + * @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) +{ + return (FlagStatus)(WWDG->SR); +} + +/** + * @brief Clears Early Wakeup interrupt flag. + * @param None + * @retval None + */ +void WWDG_ClearFlag(void) +{ + WWDG->SR = (uint32_t)RESET; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3