Pmu on CLing

CIU32 — PMU

Tue, 08 Sep 2026 14:52:21 +0800

CIU32 — PMU

固件库: CIU32F003_STDLib V1.0.3
示例数: 3

示例列表

深度停止 + WFI — PMU_Deepstop_WFI
Flash 零等待唤醒 — PMU_Flash_NoWait_Wakeup
停止 + WFI — PMU_Stop_WFI

CIU32 PMU — Flash 零等待唤醒

Tue, 08 Sep 2026 14:52:21 +0800

PMU — Flash 零等待唤醒

固件库: CIU32F003_STDLib V1.0.3
芯片: CIU32
源文件: CIU32/CIU32F003_STDLib_V1.0.3/Projects/PMU/PMU_Flash_NoWait_Wakeup/Source/main.c

功能简介

本示例演示 PMU 的基本用法。

完整代码

#include "main.h"
#define DELAY_10US               (STD_DELAY_US * 10) 

int main(void)
{        
    /* ϵͳʱΪRCH */
    system_clock_config();   
    
    /* Systickʼ */
    std_delay_init();
    
    /* LED */    
    gpio_init();     

    /* LPTIMʼ */
    lptim_init();
    
    /* ȴ3Sû */
    std_delayms(3000); 
    
    /* SRAMлFlashгʱҪʱ10us */
    g_flash_delay_time = DELAY_10US;
    
    /* FlashѵȴʱΪ0usDeepstopģʽ 
    ע⣺
       úSRAMУʱDeepstopѹFlashѵȴʱΪ0us 
    */  
    std_rcc_apb1_clk_enable(RCC_PERIPH_CLK_PMU);
    bsp_pmu_deepstop_flash_wakeup_time(); 
        
    /* лFlash
       1ָϵͳʱãRCH   
       2LED          */
    system_clock_config();           
    std_gpio_reset_pin(LED_GPIO_PORT, LED_PIN);    
        
    while(1)
    {
       
    }
}

代码讲解

系统时钟初始化：配置 MCU 的主频和时钟树。不同芯片的时钟配置不同，一般由工具生成。

GPIO 配置：设置引脚为输出/输入模式，选择推挽/开漏输出，配置上拉/下拉。

CIU32 PMU — 深度停止 + WFI

Tue, 08 Sep 2026 14:52:21 +0800

PMU — 深度停止 + WFI

固件库: CIU32F003_STDLib V1.0.3
芯片: CIU32
源文件: CIU32/CIU32F003_STDLib_V1.0.3/Projects/PMU/PMU_Deepstop_WFI/Source/main.c

功能简介

本示例演示 PMU 的基本用法。

完整代码

#include "main.h"

int main(void)
{    
    /* ϵͳʱ */
    system_clock_config();
    
    /* Systickʼ */
    std_delay_init();
    
    /* ðΪDeepstopԴ */    
    button_gpio_init();    
       
    /* NVICʼ */
    nvic_init(); 
    
    /* ȴ3Sû */
    std_delayms(3000); 
    
    /* Deepstopģʽ */  
    std_pmu_enter_stop(PMU_MODE_DEEPSTOP, PMU_ENTRY_LOWPOWER_MODE_WFI);

    
    /* Ѻ󣬻ָϵͳʱ */
    system_clock_config();    

    led_gpio_init();

    /* LED */
    std_gpio_reset_pin(LED_GPIO_PORT, LED_PIN); 
    
    while(1)
    {
       
    }
}

代码讲解

系统时钟初始化：配置 MCU 的主频和时钟树。不同芯片的时钟配置不同，一般由工具生成。

GPIO 配置：设置引脚为输出/输入模式，选择推挽/开漏输出，配置上拉/下拉。

中断优先级配置：NVIC 设置中断的抢占优先级和子优先级。数字越小优先级越高。

CIU32 PMU — 停止 + WFI

Tue, 08 Sep 2026 14:52:21 +0800

PMU — 停止 + WFI

固件库: CIU32F003_STDLib V1.0.3
芯片: CIU32
源文件: CIU32/CIU32F003_STDLib_V1.0.3/Projects/PMU/PMU_Stop_WFI/Source/main.c

功能简介

本示例演示 PMU 的基本用法。

完整代码

#include "main.h"

int main(void)
{    
    /* ϵͳʱ */
    system_clock_config();

    /* Systickʼ */
    std_delay_init();
    
    /* ðΪstopԴ */    
    button_gpio_init();    
       
    /* NVICʼ */
    nvic_init(); 
    
    /* ȴ3Sû */
    std_delayms(3000); 
    
    /* stopģʽ */  
    std_pmu_enter_stop(PMU_MODE_STOP, PMU_ENTRY_LOWPOWER_MODE_WFI);
    

    /* Ѻ󣬻ָϵͳʱ */
    system_clock_config();

    led_gpio_init();
    
    /* LED */
    std_gpio_reset_pin(LED_GPIO_PORT, LED_PIN);
        
    while(1)
    {
       
    }
}

代码讲解

系统时钟初始化：配置 MCU 的主频和时钟树。不同芯片的时钟配置不同，一般由工具生成。

GPIO 配置：设置引脚为输出/输入模式，选择推挽/开漏输出，配置上拉/下拉。

中断优先级配置：NVIC 设置中断的抢占优先级和子优先级。数字越小优先级越高。

GD32 — PMU

Tue, 08 Sep 2026 14:52:21 +0800

GD32 — PMU

固件库: GD32F30x_Firmware_Library V3.0.3
示例数: 5

示例列表

深度睡眠 EXTI 唤醒 — Deepsleep_wakeup_exti
深度睡眠 RTC 唤醒 — Deepsleep_wakeup_RTC
低电压检测 — Low_voltage_detector
待机 WKUP 唤醒 — Standby_wakeup_pin
待机 RTC 唤醒 — Standby_wakeup_RTC

GD32 PMU — 待机 RTC 唤醒

Tue, 08 Sep 2026 14:52:21 +0800

PMU — 待机 RTC 唤醒

固件库: GD32F30x_Firmware_Library V3.0.3
芯片: GD32
源文件: GD32F30x_Firmware_Library_V3.0.3/Examples/PMU/Standby_wakeup_RTC/main.c

功能简介

本示例演示 PMU 的基本用法。

完整代码

#include "gd32f30x.h"
#include "gd32f307c_eval.h"
#include "systick.h"
#include "main.h"

void led_config(void);
void rtc_configuration(void);

/* software delay to prevent the impact of Vcore fluctuations.
   It is strongly recommended to include it to avoid issues caused by self-removal. */
static void _soft_delay_(uint32_t time)
{
    __IO uint32_t i;
    for(i=0; i<time*10; i++){
    }
}

int main(void)
{
    systick_config();
    /* LED configuration and turn on all LEDs */
    led_config();
    gd_eval_led_on(LED2);
    gd_eval_led_on(LED3);
    gd_eval_led_on(LED4);
    gd_eval_led_on(LED5);
    /* delay 2s */
    delay_1ms(2000);
    /* enable PMU clock */
    rcu_periph_clock_enable(RCU_PMU);
    /* configure RTC */
    rtc_configuration();

    /* The following is to prevent Vcore fluctuations caused by frequency switching. 
       It is strongly recommended to include it to avoid issues caused by self-removal. */
    _soft_delay_(0x50);
    rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV2);
    _soft_delay_(0x50);
    rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV4);
    _soft_delay_(0x50);
    rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV8);
    _soft_delay_(0x50);
    rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV16);
    _soft_delay_(0x50);
    rcu_system_clock_source_config(RCU_CKSYSSRC_IRC8M);
    _soft_delay_(200);
    rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV1);

    /* PMU enters standby mode */
    pmu_to_standbymode();

    while(1) {
    }
}

void led_config(void)
{
    gd_eval_led_init(LED2);
    gd_eval_led_init(LED3);
    gd_eval_led_init(LED4);
    gd_eval_led_init(LED5);
}

代码讲解

代码结构清晰，主要包含外设初始化配置和主循环中的功能逻辑。请结合注释理解每一步的含义。

GD32 PMU — 待机 WKUP 唤醒

Tue, 08 Sep 2026 14:52:21 +0800

PMU — 待机 WKUP 唤醒

固件库: GD32F30x_Firmware_Library V3.0.3
芯片: GD32
源文件: GD32F30x_Firmware_Library_V3.0.3/Examples/PMU/Standby_wakeup_pin/main.c

功能简介

本示例演示 PMU 的基本用法。

完整代码

#include "gd32f30x.h"
#include <stdio.h>
#include "gd32f307c_eval.h"

void led_config(void);

/* software delay to prevent the impact of Vcore fluctuations.
   It is strongly recommended to include it to avoid issues caused by self-removal. */
static void _soft_delay_(uint32_t time)
{
    __IO uint32_t i;
    for(i=0; i<time*10; i++){
    }
}

int main(void)
{
    /* enable clock */
    rcu_periph_clock_enable(RCU_PMU);
    /* LED configuration and turn on all LEDs */
    led_config();
    gd_eval_led_on(LED2);
    gd_eval_led_on(LED4);
    gd_eval_led_on(LED3);
    gd_eval_led_on(LED5);
    /* tamper key configuration */
    gd_eval_key_init(KEY_TAMPER, KEY_MODE_GPIO);
    /* enable wakeup pin */
    pmu_wakeup_pin_enable();
    /* press tamper key to enter standby mode and use wakeup key to wakeup mcu */
    while(1) {
        if(RESET == gpio_input_bit_get(TAMPER_KEY_GPIO_PORT, TAMPER_KEY_PIN)) {
            /* The following is to prevent Vcore fluctuations caused by frequency switching. 
               It is strongly recommended to include it to avoid issues caused by self-removal. */
            _soft_delay_(0x50);
            rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV2);
            _soft_delay_(0x50);
            rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV4);
            _soft_delay_(0x50);
            rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV8);
            _soft_delay_(0x50);
            rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV16);
            _soft_delay_(0x50);
            rcu_system_clock_source_config(RCU_CKSYSSRC_IRC8M);
            _soft_delay_(200);
            rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV1);

            pmu_to_standbymode();
        }
    }
}

void led_config(void)
{
    gd_eval_led_init(LED2);
    gd_eval_led_init(LED3);
    gd_eval_led_init(LED4);
    gd_eval_led_init(LED5);
}

代码讲解

代码结构清晰，主要包含外设初始化配置和主循环中的功能逻辑。请结合注释理解每一步的含义。

GD32 PMU — 低电压检测

Tue, 08 Sep 2026 14:52:21 +0800

PMU — 低电压检测

固件库: GD32F30x_Firmware_Library V3.0.3
芯片: GD32
源文件: GD32F30x_Firmware_Library_V3.0.3/Examples/PMU/Low_voltage_detector/main.c

功能简介

本示例演示 PMU 的基本用法。

完整代码

#include "gd32f30x.h"
#include <stdio.h>
#include "gd32f307c_eval.h"

int main(void)
{
    /* NVIC configuration */
    nvic_priority_group_set(NVIC_PRIGROUP_PRE0_SUB4);
    nvic_irq_enable(LVD_IRQn,0,0);
    /* enable clock */
    rcu_periph_clock_enable(RCU_PMU);
    /* initialize LED2 */
    gd_eval_led_init(LED2);
    /* turn on LED2*/
    gd_eval_led_on(LED2);
    /* EXTI_16 configuration */
    exti_init(EXTI_16, EXTI_INTERRUPT, EXTI_TRIG_BOTH);
    /* configure the LVD threshold to 2.9v */
    pmu_lvd_select(PMU_LVDT_7);
    /* enable lvd */
    pmu_lvd_enable();

    while(1){
    }
}

代码讲解

中断优先级配置：NVIC 设置中断的抢占优先级和子优先级。数字越小优先级越高。

GD32 PMU — 深度睡眠 EXTI 唤醒

Tue, 08 Sep 2026 14:52:21 +0800

PMU — 深度睡眠 EXTI 唤醒

固件库: GD32F30x_Firmware_Library V3.0.3
芯片: GD32
源文件: GD32F30x_Firmware_Library_V3.0.3/Examples/PMU/Deepsleep_wakeup_exti/main.c

功能简介

本示例演示 PMU 的基本用法。

完整代码

#include "gd32f30x.h"
#include "gd32f307c_eval.h"
#include "systick.h"
#include "main.h"

void led_config(void);

/* software delay to prevent the impact of Vcore fluctuations.
   It is strongly recommended to include it to avoid issues caused by self-removal. */
static void _soft_delay_(uint32_t time)
{
    __IO uint32_t i;
    for(i=0; i<time*10; i++){
    }
}

int main(void)
{
    /* systick configuration */
    systick_config();
    /* LED configuration */
    led_config();
    /* enable clock */
    rcu_periph_clock_enable(RCU_PMU);
    /* wakeup key configuration */
    gd_eval_key_init(KEY_WAKEUP, KEY_MODE_GPIO);
    /* tamper key EXTI configuration */
    gd_eval_key_init(KEY_TAMPER, KEY_MODE_EXTI);
    /* press wakeup key to enter deepsleep mode and use tamper key to generate a exti interrupt to wakeup mcu */
    while(1){
        if(RESET == gpio_input_bit_get(WAKEUP_KEY_GPIO_PORT, WAKEUP_KEY_PIN)){
            /* The following is to prevent Vcore fluctuations caused by frequency switching. 
               It is strongly recommended to include it to avoid issues caused by self-removal. */
            _soft_delay_(0x50);
            rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV2);
            _soft_delay_(0x50);
            rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV4);
            _soft_delay_(0x50);
            rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV8);
            _soft_delay_(0x50);
            rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV16);
            _soft_delay_(0x50);
            rcu_system_clock_source_config(RCU_CKSYSSRC_IRC8M);
            _soft_delay_(200);
            rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV1);

            pmu_to_deepsleepmode(PMU_LDO_LOWPOWER, PMU_LOWDRIVER_DISABLE, WFI_CMD);
        }
    }
}

void led_config(void)
{
    gd_eval_led_init(LED2);
    gd_eval_led_init(LED3);
    gd_eval_led_init(LED4);
    gd_eval_led_init(LED5);
}

代码讲解

代码结构清晰，主要包含外设初始化配置和主循环中的功能逻辑。请结合注释理解每一步的含义。

GD32 PMU — 深度睡眠 RTC 唤醒

Tue, 08 Sep 2026 14:52:21 +0800

PMU — 深度睡眠 RTC 唤醒

固件库: GD32F30x_Firmware_Library V3.0.3
芯片: GD32
源文件: GD32F30x_Firmware_Library_V3.0.3/Examples/PMU/Deepsleep_wakeup_RTC/main.c

功能简介

本示例演示 PMU 的基本用法。

完整代码

#include "gd32f30x.h"
#include "gd32f307c_eval.h"
#include "systick.h"
#include "main.h"

void led_config(void);
void nvic_configuration(void);
void rtc_configuration(void);
void fwdgt_configuration(void);

/* software delay to prevent the impact of Vcore fluctuations.
   It is strongly recommended to include it to avoid issues caused by self-removal. */
static void _soft_delay_(uint32_t time)
{
    __IO uint32_t i;
    for(i=0; i<time*10; i++){
    }
}

int main(void)
{
    /* nvic configuration */
    nvic_configuration();
    /* LED configuration */
    led_config();
    /* systick configuration */
    systick_config();
    gd_eval_led_on(LED5);
    delay_1ms(2000U);
    gd_eval_led_off(LED5);
    /* RTC configuration */
    rtc_configuration();
    /* FWDGT configuration */
    fwdgt_configuration();

    while(1){
        delay_1ms(50U);
        /* The following is to prevent Vcore fluctuations caused by frequency switching. 
           It is strongly recommended to include it to avoid issues caused by self-removal. */
        _soft_delay_(0x50);
        rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV2);
        _soft_delay_(0x50);
        rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV4);
        _soft_delay_(0x50);
        rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV8);
        _soft_delay_(0x50);
        rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV16);
        _soft_delay_(0x50);
        rcu_system_clock_source_config(RCU_CKSYSSRC_IRC8M);
        _soft_delay_(200);
        rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV1);

        /* PMU enters deepsleep mode */
        pmu_to_deepsleepmode(PMU_LDO_LOWPOWER, PMU_LOWDRIVER_DISABLE, WFI_CMD);
        gd_eval_led_toggle(LED2);
    }
}

void led_config(void)
{
    gd_eval_led_init(LED2);
    gd_eval_led_init(LED5);
}

代码讲解

中断优先级配置：NVIC 设置中断的抢占优先级和子优先级。数字越小优先级越高。