rp-77_anmo/LIN Slave/Src/svd.c

 /*    
  * Copyright (c) 2022, SHANGHAI FUDAN MICROELECTRONICS GROUP CO., LTD.(FUDAN MICROELECTRONICS./ FUDAN MICRO.)    
  * All rights reserved.    
  *    
  * Processor:                   FM33LG0xxA    
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 */    
#include "svd.h"

/**
  * @brief  将SVS引脚初始化为模拟端口
  * @param  void
  * @retval void
  */
static void SVD_SVS_GPIO_Init(void)
{
    FL_GPIO_InitTypeDef gpioInitStruct = {0};

    gpioInitStruct.pin        = SVD_SVS_PIN;
    gpioInitStruct.mode       = FL_GPIO_MODE_ANALOG;
    gpioInitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL;
    gpioInitStruct.pull       = FL_DISABLE;
    gpioInitStruct.remapPin   = FL_DISABLE;

    FL_GPIO_Init(SVD_SVS_GPIO, &gpioInitStruct);
}


/**
  * @brief  SVD初始化
  * @param  eSVD_MonitroPower: 选择SVD监控电源
  *         u32WarnThreshold： 报警阈值档位
  *         u32RevVoltage：    参考基准
  * @retval void
  */
void SVD_Init(SVD_MONTIOR_POWER eSVD_MonitroPower, uint32_t u32WarnThreshold, uint32_t u32RevVoltage)
{
    FL_SVD_InitTypeDef    SVD_InitStruct;

    if(SVD_MONTIOR_SVS == eSVD_MonitroPower)
    {   /* SVS引脚初始化为模拟功能 */
        SVD_SVS_GPIO_Init();
    }

    /* 使能外部SVS通道 */
    SVD_InitStruct.SVSChannel       = (FL_FunState)(SVD_MONTIOR_SVS == eSVD_MonitroPower);
    /* 使能数字滤波 */
    SVD_InitStruct.digitalFilter    = FL_ENABLE;
    /* 参考基准输入选择 */
    SVD_InitStruct.referenceVoltage = u32RevVoltage;
    /* 工作模式配置 */
    SVD_InitStruct.workMode         = FL_SVD_WORK_MODE_CONTINUOUS;
    /* 间歇使能间隔配置 */
    SVD_InitStruct.enablePeriod     = FL_SVD_ENABLE_PERIOD_62P5MS;
    /* 报警阈值配置 */
    SVD_InitStruct.warningThreshold = u32WarnThreshold;
    /* 报警阈值设置 */
    FL_SVD_Init(SVD, &SVD_InitStruct);
    /* 使能SVD */
    FL_SVD_Enable(SVD);
    /* SVD使能后到稳定输出等待500us */
    FL_DelayUs(500);
}

/**
  * @brief  SVD监测结果（SVDO标志位）轮询输出
            SVD实时电压监测标志，无滤波
  * @param  void
  * @retval None
  */
SVD_RESULT SVD_SVDO_POLL(void)
{
    /* SVD实时电压监测标志；软件避免写此寄存器 */
    return (SVD_RESULT)(SVD_ISR_SVDO_Msk == FL_SVD_GetCurrentPowerStatus(SVD));
}

/**
  * @brief  SVD监测结果（SVDR标志）轮询输出
            仅在数字滤波使能时有意义，即滤波后的锁存信号 
  * @param  void
  * @retval None
  */
SVD_RESULT SVD_SVDR_POLL(void)
{
    /* SVD内部滤波后的电压监测标志，仅在使能数字滤波时有意义；软件避免写此寄存器 */
    return (SVD_RESULT)(SVD_ISR_SVDR_Msk == FL_SVD_GetLatchedPowerStatus(SVD));
}

/**
  * @brief  确认SVD监测结果是否处于目标状态
  * @param  eSVDResultType：要确认的目状态SVD_BELOW_THRESHOLD或SVD_HIGHER_THRESHOLD
            u32Delay_us：   防抖时长，单位us
  * @retval bool   true： 当前SVD监测结果与目标状态一致
                   false：当前SVD监测结果与目标状态不一致
  */
bool SVD_Result_Confirmed(SVD_RESULT eSVDResultType, uint32_t u32Delay_us)
{
    if (0 == u32Delay_us)
    {
        u32Delay_us += 1;
    }
    /* 注意是否使能数字滤波，调用不同的结果轮询函数 */
    while ((SVD_SVDR_POLL() == eSVDResultType) && u32Delay_us)
    {
        if (--u32Delay_us)
        {
            FL_DelayUs(1);
        }
    }
    
    return (bool)(0 == u32Delay_us);
}