HC32F460 timer0 唤醒 stop 模式

最新推荐文章于 2025-05-23 17:00:08 发布

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最新推荐文章于 2025-05-23 17:00:08 发布

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文章标签：单片机嵌入式硬件

本文链接：https://blog.youkuaiyun.com/mg_hover/article/details/129713194

文章详细介绍了如何配置timer0的A通道在异步计数时钟下工作，以唤醒STOP模式。通过初始化timer0，设置中断源并启用中断，然后进入STOP模式，当timer0计数值达到预设值时触发中断，从而唤醒系统。

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timer0 唤醒STOP模式，注意这模式唤醒只能用 timer0 A通道，而且还要运行在异步计数时钟

代码如下

/* TMR0 unit and channel definition */
#define TMR0_UNIT                       (CM_TMR0_1)
#define TMR0_CLK                        (FCG2_PERIPH_TMR0_1)
#define TMR0_CH                         (TMR0_CH_A)
#define TMR0_TRIG_CH                    (AOS_TMR0)
#define TMR0_CH_INT                     (TMR0_INT_CMP_A)
#define TMR0_CH_FLAG                    (TMR0_FLAG_CMP_A)
#define TMR0_INT_SRC                    (INT_SRC_TMR0_1_CMP_A)
#define TMR0_IRQn                       (INT030_IRQn)

#define TMR0_CMP_VALUE                  ( 100U )//1024





 void TMR0_Config(void)
{
    stc_tmr0_init_t stcTmr0Init;
    stc_irq_signin_config_t stcIrqSignConfig;

    /* Enable timer0 and AOS clock */
    FCG_Fcg2PeriphClockCmd(TMR0_CLK, ENABLE);
    FCG_Fcg0PeriphClockCmd(FCG0_PERIPH_AOS, ENABLE);

    /* TIMER0 configuration */
    (void)TMR0_StructInit(&stcTmr0Init);
    stcTmr0Init.u32ClockSrc     = TMR0_CLK_SRC_LRC;
    stcTmr0Init.u32ClockDiv     = TMR0_CLK_DIV16;
    stcTmr0Init.u32Func         = TMR0_FUNC_CMP;
    stcTmr0Init.u16CompareValue = (uint16_t)TMR0_CMP_VALUE;
    (void)TMR0_Init(TMR0_UNIT, TMR0_CH, &stcTmr0Init);
    DDL_DelayMS(1U);
    TMR0_HWStopCondCmd(TMR0_UNIT, TMR0_CH, ENABLE);
    DDL_DelayMS(1U);
    TMR0_IntCmd(TMR0_UNIT, TMR0_CH_INT, ENABLE);
    DDL_DelayMS(1U);
//    AOS_SetTriggerEventSrc(TMR0_TRIG_CH, BSP_KEY_KEY10_EVT);

    /* Interrupt configuration */
    stcIrqSignConfig.enIntSrc    = TMR0_INT_SRC;
    stcIrqSignConfig.enIRQn      = TMR0_IRQn;
    stcIrqSignConfig.pfnCallback = &TMR0_CompareIrqCallback;
    (void)INTC_IrqSignIn(&stcIrqSignConfig);
    NVIC_ClearPendingIRQ(stcIrqSignConfig.enIRQn);
    NVIC_SetPriority(stcIrqSignConfig.enIRQn, DDL_IRQ_PRIO_DEFAULT);
    NVIC_EnableIRQ(stcIrqSignConfig.enIRQn);
	
}




/**
 * @brief  Main function of PWC Stop wakeup project
 * @param  None
 * @retval int32_t return value, if needed
 */
int32_t main(void)
{
    uint8_t u8Count;
    /* Register write enable for some required peripherals. */
    LL_PERIPH_WE(LL_PERIPH_GPIO | LL_PERIPH_PWC_CLK_RMU | LL_PERIPH_FCG | LL_PERIPH_EFM | LL_PERIPH_SRAM);

    /* System Clock init */
    BSP_CLK_Init();
    /* LED init */
    BSP_LED_Init();
    /* Key init */
   // BSP_KEY_Init();
	
		TMR0_Config();
	
    STOP_Config();
	
		
	
		BSP_LED_On(LED_RED);
    /* KEY10 */
//    while (PIN_RESET != GPIO_ReadInputPins(BSP_KEY_KEY10_PORT, BSP_KEY_KEY10_PIN)) {
//        ;
//    }
    DDL_DelayMS(DLY_MS);
	  BSP_LED_Off(LED_RED);
    /* Register write protected for some required peripherals. */
    LL_PERIPH_WP(LL_PERIPH_GPIO | LL_PERIPH_FCG | LL_PERIPH_EFM | LL_PERIPH_SRAM);

    for (;;) {
        u8Count = 10U;
        do {
            BSP_LED_Toggle(LED_BLUE);
            DDL_DelayMS(DLY_MS);
        } while ((--u8Count) != 0U);

		
        if (LL_OK == STOP_IsReady()) {
           BSP_LED_On(LED_RED);
					TMR0_Start(TMR0_UNIT, TMR0_CH);  
            PWC_STOP_Enter();
        }
    }
}