108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/********************************** (C) COPYRIGHT *******************************
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* File Name : SLEEP.c
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* Author : WCH
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* Version : V1.2
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* Date : 2022/01/18
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* Description : Sleep configuration and its initialization
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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/******************************************************************************/
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/* Header file contains */
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#include "HAL.h"
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#define US_TO_TICK(us) (uint32_t)((us) / (1000000 / ((CAB_LSIFQ / 2))))
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#define SLEEP_PERIOD_MIN_US 200
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#define SLEEP_PERIOD_MAX_TICK 0xFFD2393F
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#define SLEEP_PERIOD_MIN_TICK US_TO_TICK(SLEEP_PERIOD_MIN_US)
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#define HESREADY_TICK US_TO_TICK(WAKE_UP_MAX_TIME_US)
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/*******************************************************************************
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* @fn BLE_LowPower
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*
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* @brief 启动睡眠
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*
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* @param time - 唤醒的时间点（RTC绝对值）
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*
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* @return state.
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*/
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uint32_t BLE_LowPower(uint32_t time)
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{
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#if(defined(HAL_SLEEP)) && (HAL_SLEEP == TRUE)
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uint32_t current_time;
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uint32_t sleep_period;
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uint32_t wake_time;
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wake_time = time - HESREADY_TICK;
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__disable_irq();
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current_time = RTC_GetCounter();
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sleep_period = wake_time - current_time;
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if((sleep_period < SLEEP_PERIOD_MIN_TICK) || (sleep_period > SLEEP_PERIOD_MAX_TICK))
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{
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__enable_irq();
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return 2;
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}
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RTC_SetTignTime(wake_time);
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__enable_irq();
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#if(DEBUG == DEBUG_UART1) // To use other serial ports to output printing information, you need to modify this line of code
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while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
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{
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__NOP();
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}
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#endif
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// LOW POWER-sleep
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if(!RTCTigFlag)
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{
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PWR_EnterSTOPMode_RAM_LV(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
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SystemInit();
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}
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else
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{
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return 3;
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}
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#endif
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return 0;
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}
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/*******************************************************************************
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* @fn HAL_SleepInit
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*
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* @brief Configure sleep Wake-up source - RTC wake up, trigger mode
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*
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* @param None.
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*
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* @return None.
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*/
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void HAL_SleepInit(void)
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{
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#if(defined(HAL_SLEEP)) && (HAL_SLEEP == TRUE)
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
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RTC_WaitForLastTask();
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RTC_ITConfig(RTC_IT_ALR, ENABLE);
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EXTI_InitTypeDef EXTI_InitStructure = {0};
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NVIC_InitTypeDef NVIC_InitStructure = {0};
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EXTI_InitStructure.EXTI_Line = EXTI_Line17;
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EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
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EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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EXTI_Init(&EXTI_InitStructure);
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NVIC_InitStructure.NVIC_IRQChannel = RTCAlarm_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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#endif
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}
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