All-round small gateway | CH32V208--Part 4: Low power consumption test

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All-round small gateway | CH32V208--Part 4: Low power consumption test [Copy link]

1: Circuit diagram modification

Remove D1 (LED light) and R1 resistor in the figure below to reduce current loss.

2. Low power mode

2.1, The low power consumption modes of CH32V208 include: sleep mode, stop mode, and standby mode, as shown in the following figure:

2.1, active mode

The current of CH32V208 in normal operation is shown in the figure below:

2.3, sleep mode

2.3.1, the PA0 pin input low level triggers the external interrupt EXTI_Line0 to exit the sleep mode, and the program continues to execute after waking up.

2.3.2, key codes, as shown below:

/*********************************************************************
 * @fn      EXTI0_INT_INIT
 *
 * @brief    EXTI0中断配置，使PA0发生中断，唤醒sleep休眠
 *
 * @return   none
 */
void EXTI0_INT_INIT(void)
{
    GPIO_InitTypeDef GPIO_InitStructure = {0};
    EXTI_InitTypeDef EXTI_InitStructure = {0};
    NVIC_InitTypeDef NVIC_InitStructure = {0};

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    /* GPIOA.0 ----> EXTI_Line0 */
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);
    EXTI_InitStructure.EXTI_Line = EXTI_Line0;
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//下降沿
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_Init(&EXTI_InitStructure);

    NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

/*********************************************************************
 * @fn      sleep_mode_enable
 *
 * @brief   使能sleep休眠模式
 *
 * @return  none
 */
void sleep_mode_enable(void)
{
    __WFI();
}

2.3.3, the current situation in sleep mode is as shown in the figure below:

2.4, stop mode

2.4.1, the PA0 pin input low level triggers the external interrupt EXTI_Line0 to exit the stop sleep mode, and the program continues to execute after waking up.

2.4.2, key codes, as shown below:

/*********************************************************************
 * @fn      EXTI0_INT_INIT
 *
 * @brief  EXTI0中断配置，使PA0发生中断，唤醒sleep休眠
 *
 * @return  none
 */
void EXTI0_INT_INIT(void)
{
    GPIO_InitTypeDef GPIO_InitStructure = {0};
    EXTI_InitTypeDef EXTI_InitStructure = {0};
    NVIC_InitTypeDef NVIC_InitStructure = {0};

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    /* GPIOA.0 ----> EXTI_Line0 */
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);
    EXTI_InitStructure.EXTI_Line = EXTI_Line0;
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_Init(&EXTI_InitStructure);

    NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

/*********************************************************************
 * @fn      stop_mode_enable
 *
 * @brief  使能stop休眠模式
 *
 * @return  none
 */
void stop_mode_enable(void)
{
    PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
}

2.4.3, the current situation in stop mode is as shown in the figure below:

2.5, standby mode

2.5.1, the rising edge of the WKUP (PA0) pin exits the standby mode and the program is reset after waking up.

2.5.2, key codes, as shown below:

/*********************************************************************
 * @fn      gpio_init
 *
 * @brief   GPIO初始化
 *
 * @return  none
 */
void gpio_init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure = {0};

        /* To reduce power consumption, unused GPIOs need to be set as pull-down inputs */
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|
                RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOE, ENABLE);
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

        GPIO_Init(GPIOA, &GPIO_InitStructure);
        GPIO_Init(GPIOB, &GPIO_InitStructure);
        GPIO_Init(GPIOC, &GPIO_InitStructure);
        GPIO_Init(GPIOD, &GPIO_InitStructure);
        GPIO_Init(GPIOE, &GPIO_InitStructure);
}


/*********************************************************************
 * @fn      PWR_WakeUpPinCmd
 *
 * @brief   Enables or disables the WakeUp Pin functionality.
 *
 * @param   NewState - new state of the WakeUp Pin functionality
 *        (ENABLE or DISABLE).
 *
 * @return  none
 */
void PWR_WakeUpPinCmd(FunctionalState NewState)
{
    if(NewState)
    {
        PWR->CSR |= (1 << 8);
    }
    else
    {
        PWR->CSR &= ~(1 << 8);
    }
}

/*********************************************************************
 * @fn      PWR_EnterSTANDBYMode
 *
 * @brief   Enters STANDBY mode.
 *
 * @return  none
 */
void PWR_EnterSTANDBYMode(void)
{
    PWR->CTLR |= PWR_CTLR_CWUF;
    PWR->CTLR |= PWR_CTLR_PDDS;
    NVIC->SCTLR |= (1 << 2);

    __WFI();
}

2.5.3, the current situation in standby mode is as shown in the following figure:

Three: Statement

The purpose of this experiment is to familiarize yourself with the entry and exit methods of various low-power modes of the chip. The recorded current conditions are not the lowest conditions in each low-power mode.

Jacktang

The main purpose is to familiarize yourself with the entry and exit methods of various low-power modes of the chip. The recorded current conditions are not the lowest conditions in each low-power mode.

Understand, just to get familiar with

xiaolinen

Jacktang posted on 2024-7-7 09:24 It is mainly to familiarize yourself with the entry and exit methods of various low power modes of the chip. The recorded current conditions are not the lowest conditions in each low power mode...

Don't understand it this way, don't understand it this way, it's just to pave the way for further use