全能小网关|CH32V208--第四篇：低功耗测试

xiaolinen 发表于 2024-7-6 22:05

<div class='showpostmsg'> 本帖最后由 xiaolinen 于 2024-7-6 22:03 编辑

<p><strong><span style="font-size:22px;">一：电路图修改</span></strong></p>

<p><span style="font-size:20px;">        将下图中的D1（LED灯）和R1电阻拆除，减少电流的耗损。</span></p>

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<div><strong><span style="font-size:22px;">二：低功耗模式</span></strong></div>

<div><strong><span style="font-size:22px;">        </span></strong><span style="font-size:22px;">2.1，CH32V208的低功耗模式包括：睡眠模式，停止模式，待机模式，具体如下图所示：</span></div>

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<p> </p>
</div>

<div><span style="font-size:20px;"><strong>        </strong>2.1，active模式</span></div>

<div><span style="font-size:20px;">                CH32V208在正常运行工作状态的电流情况，如下图所示：</span></div>

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<p><span style="font-size:20px;">        2.3，sleep模式</span></p>

<p><span style="font-size:20px;">                2.3.1，PA0引脚输入低电平触发外部中断EXTI_Line0退出sleep睡眠模式，程序在唤醒后继续执行。</span></p>

<p><span style="font-size:20px;">                2.3.2，重点代码，如下图所示：</span></p>

<pre>
<code class="language-cpp">/*********************************************************************
* @fn    EXTI0_INT_INIT
*
* <a href="home.php?mod=space&uid=159083" target="_blank">@brief </a> EXTI0中断配置，使PA0发生中断，唤醒sleep休眠
*
* <a href="home.php?mod=space&uid=784970" target="_blank">@return </a>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
*
* @returnnone
*/
void sleep_mode_enable(void)
{
__WFI();
}
</code></pre>

<p><span style="font-size:20px;">                2.3.3，sleep模式下电流情况，如下图所示：</span></p>

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<div style="text-align: center;"> </div>

<p><span style="font-size:20px;">        2.4，stop模式</span></p>

<p><span style="font-size:20px;">                2.4.1，PA0引脚输入低电平触发外部中断EXTI_Line0退出stop睡眠模式，程序在唤醒后继续执行。</span></p>

<p><span style="font-size:20px;">                2.4.2，重点代码，如下图所示：</span></p>

<pre>
<code class="language-cpp">/*********************************************************************
* @fn    EXTI0_INT_INIT
*
* @briefEXTI0中断配置，使PA0发生中断，唤醒sleep休眠
*
* @returnnone
*/
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
*
* @returnnone
*/
void stop_mode_enable(void)
{
PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
}</code></pre>

<p><span style="font-size:20px;">                2.4.3，stop模式下电流情况，如下图所示：</span></p>

<div style="text-align: center;"></div>

<div style="text-align: center;"> </div>

<p><span style="font-size:20px;">        2.5，standby模式</span></p>

<p><span style="font-size:20px;">                2.5.1，WKUP (PA0)引脚的上升沿退出待机模式，唤醒后程序复位。</span></p>

<p><span style="font-size:20px;">                2.5.2，重点代码，如下图所示：</span></p>

<pre>
<code class="language-cpp">/*********************************************************************
* @fn    gpio_init
*
* @brief GPIO初始化
*
* @returnnone
*/
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).
*
* @returnnone
*/
void PWR_WakeUpPinCmd(FunctionalState NewState)
{
if(NewState)
{
   PWR->CSR |= (1 << 8);
}
else
{
   PWR->CSR &= ~(1 << 8);
}
}

/*********************************************************************
* @fn    PWR_EnterSTANDBYMode
*
* @brief Enters STANDBY mode.
*
* @returnnone
*/
void PWR_EnterSTANDBYMode(void)
{
PWR->CTLR |= PWR_CTLR_CWUF;
PWR->CTLR |= PWR_CTLR_PDDS;
NVIC->SCTLR |= (1 << 2);

__WFI();
}</code></pre>

<p><span style="font-size:20px;">                2.5.3，standby</span><span style="font-size:20px;">模式下电流情况，如下图所示：</span></p>

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<p> </p>
</div>

<p><strong><span style="font-size:22px;">三：声明</span></strong></p>

<p><span style="font-size:20px;">        本次记录的实验，主要是为了熟悉芯片各种低功耗模式的进入和退出方法，所记录的电流情况，并不是各个低功耗模式下的最低情况。</span></p>
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Jacktang 发表于 2024-7-7 09:24

<p>主要是为了熟悉芯片各种低功耗模式的进入和退出方法，所记录的电流情况，并不是各个低功耗模式下的最低情况。</p>

<p>明白，就是为了熟悉</p>

xiaolinen 发表于 2024-7-7 14:13

Jacktang 发表于 2024-7-7 09:24
主要是为了熟悉芯片各种低功耗模式的进入和退出方法，所记录的电流情况，并不是各个低功耗模式下的最低情况 ...

<p>不要这么理解，不要这么理解，只是为后续进一步使用做一下铺垫<img height="48" src="https://bbs.eeworld.com.cn/static/editor/plugins/hkemoji/sticker/facebook/lol.gif" width="48" /></p>

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全能小网关|CH32V208--第四篇：低功耗测试