rt-thread/bsp/apm32/libraries/APM32F10x_Library/APM32F10x_StdPeriphDriver/src/apm32f10x_wwdt.c

/*!
 * @file        apm32f10x_wwdt.c
 *
 * @brief       This file contains all the functions for the WWDT peripheral
 *
 * @version     V1.0.1
 *
 * @date        2021-03-23
 *
 */

#include "apm32f10x_wwdt.h"
#include "apm32f10x_rcm.h"

/** @addtogroup Peripherals_Library Standard Peripheral Library
  @{
*/

/** @addtogroup WWDT_Driver  WWDT Driver
  @{
*/

/** @addtogroup  WWDT_Fuctions Fuctions
  @{
*/

/*!
 * @brief        Reset the WWDT peripheral registers
 *
 * @param        None
 *
 * @retval       None
 */
void WWDT_Reset(void)
{
    RCM_EnableAPB1PeriphReset(RCM_APB1_PERIPH_WWDT);
    RCM_DisableAPB1PeriphReset(RCM_APB1_PERIPH_WWDT);
}

/*!
 * @brief        Config the WWDT Timebase
 *
 * @param        timebase: WWDT Prescaler
 *               The parameter can be one of following values:
 *               @arg WWDT_TIME_BASE_1:  WWDT counter clock = (PCLK1/4096)/1
 *               @arg WWDT_TIME_BASE_2:  WWDT counter clock = (PCLK1/4096)/2
 *               @arg WWDT_TIME_BASE_4:  WWDT counter clock = (PCLK1/4096)/4
 *               @arg WWDT_TIME_BASE_8:  WWDT counter clock = (PCLK1/4096)/8
 *
 * @retval       None
 */
void WWDT_ConfigTimebase(WWDT_TIME_BASE_T timeBase)
{
    __IO uint32_t reg;

    reg = WWDT->CFG & 0xFFFFFE7F;
    reg |= timeBase;
    WWDT->CFG = reg;
}

/*!
 * @brief        Config the WWDT Window data
 *
 * @param        windowdata: window data which compare with the downcounter
 *
 * @retval       None
 *
 * @note         The windowdata must be lower than 0x80
 */
void WWDT_ConfigWindowData(uint8_t windowData)
{
    __IO uint32_t reg;

    reg = WWDT->CFG & 0xFFFFFF80;
    reg |= windowData & 0x7F;
    WWDT->CFG = reg;
}

/*!
 * @brief       Config the WWDT counter value
 *
 * @param       counter: Specifies the watchdog counter value
 *
 * @retval      None
 *
 * @note        The counter between 0x40 and 0x7F
 */
void WWDT_ConfigCounter(uint8_t counter)
{
    WWDT->CTRL = counter & 0x7F;
}

/*!
 * @brief        Enable the WWDT Early Wakeup interrupt
 *
 * @param        None
 *
 * @retval       None
 */
void WWDT_EnableEWI(void)
{
    WWDT->CFG_B.EWIEN = SET;
}

/*!
 * @brief        Enable WWDT and set the counter value
 *
 * @param        counter: the window watchdog counter value
 *
 * @retval       None
 *
 * @note         The counter between 0x40 and 0x7F
 */
void WWDT_Enable(uint8_t counter)
{
    WWDT->CTRL =  counter | 0x00000080;
}

/*!
 * @brief        Read the Early Wakeup interrupt flag
 *
 * @param        None
 *
 * @retval       the state of the Early Wakeup interrupt flagte
 */
uint8_t WWDT_ReadFlag(void)
{
    return (uint8_t) (WWDT->STS);
}

/*!
 * @brief        Clear the Early Wakeup interrupt flag
 *
 * @param        None
 *
 * @retval       None
 */
void WWDT_ClearFlag(void)
{
    WWDT->STS_B.EWIFLG = RESET;
}

/**@} end of group WWDT_Fuctions*/
/**@} end of group WWDT_Driver */
/**@} end of group Peripherals_Library*/