554 lines
17 KiB
C
554 lines
17 KiB
C
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/*
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* @Description:
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* @Version: 1.0
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* @Autor: lzc
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* @Date: 2022-08-19 12:48:36
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* @LastEditors: lzc
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* @LastEditTime: 2024-05-16 14:51:06
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*/
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#include "main.h"
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#include "drv_SGM58031.h"
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#include "MyBandFitter.h"
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extern WarningMsg_t WarningMsg;
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extern uint16_t TimeClock_Recalibrate_Count;
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/* 当前保存时间的变量 */
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TimingVarTypeDef Time;
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uint32_t time_up_num = 0;
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/* 系统滴答定时器的中断次数 */
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uint32_t TimeupTimes;
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/////////////////////////////////通用定时器2中断初始化（ADC）///////////////////////////////////
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// arr：自动重装值。
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// psc：时钟预分频数
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// 定时器溢出时间计算方法:Tout=((arr+1)*(psc+1))/Ft us.
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// 200*160 /16 = 2ms
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// 定时器时钟84M，分频系数8400，所以84M/8400=10Khz的计数频率，计数5000次为500ms
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// Ft=定时器工作频率,单位:Mhz
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// 这里使用的是定时器3!
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void TIM2_Int_Init(u16 arr, u16 psc)
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{
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TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); /// 使能TIM3时钟
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TIM_TimeBaseInitStructure.TIM_Period = arr; // 自动重装载值
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TIM_TimeBaseInitStructure.TIM_Prescaler = psc; // 定时器分频
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TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up; // 向上计数模式
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TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
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TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStructure); // 初始化TIM3
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TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE); // 允许定时器3更新中断
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TIM_Cmd(TIM2, DISABLE); // 使能定时器3
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NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; // 定时器3中断
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02; // 抢占优先级1
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01; // 子优先级3
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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int FitterCount_Heart = 0;
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int FitterCount_Breath = 0;
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int FitterCount_CheckBed = 0;
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char FitterCollectDoneFlag_Heart = 0;
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char FitterCollectDoneFlag_Breath = 0;
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char FitterCollectDoneFlag_CheckBed = 0;
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// 定时器2中断服务函数
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char TIM2_EntryFlag = 0;
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uint16_t TIM2_CountVal = 0;
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float SGM58031_ADC_Value = 0.0f;
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void TIM2_IRQHandler(void)
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{
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if (TIM_GetITStatus(TIM2, TIM_IT_Update) == SET) // 溢出中断
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{
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if (TIM2_CountVal >= 10)
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{
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TIM2_CountVal = 0;
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// printf("TickDone !!!\r\n");
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SGM58031_ADC_Value = SGM58031_ReadADCValue();
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FitterOPMData_Heart[FitterCount_Heart] = 10 * log10(SGM58031_ADC_Value / pow(10, channel_1310)) + cal_1310;
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FitterOPMData_Breath[FitterCount_Breath] = 10 * log10(SGM58031_ADC_Value / pow(10, channel_1310)) + cal_1310;
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FitterOPMData_CheckBed[FitterCount_CheckBed] = 10 * log10(SGM58031_ADC_Value / pow(10, channel_1310)) + cal_1310;
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if (FitterCollectDoneFlag_Heart != 1)
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{
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FitterCount_Heart++;
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if (FitterCount_Heart == HEART_FITTER_LENGTH)
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{
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FitterCount_Heart = HEART_FITTER_LENGTH - 50;
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FitterCollectDoneFlag_Heart = 1;
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}
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}
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if (FitterCollectDoneFlag_Breath != 1)
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{
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FitterCount_Breath++;
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if (FitterCount_Breath == LENGTH_SAMPLES_BREATH)
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{
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FitterCount_Breath = LENGTH_SAMPLES_BREATH - 50;
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FitterCollectDoneFlag_Breath = 1;
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}
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}
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if (FitterCollectDoneFlag_CheckBed != 1)
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{
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FitterCount_CheckBed++;
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if (FitterCount_CheckBed == LENGTH_SAMPLES_IN_OFF_BED)
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{
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FitterCount_CheckBed = LENGTH_SAMPLES_IN_OFF_BED - 50;
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FitterCollectDoneFlag_CheckBed = 1;
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}
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}
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}
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TIM2_CountVal++;
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TIM_ClearITPendingBit(TIM2, TIM_IT_Update); // 清除中断标志位
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}
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}
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/////////////////////////////////通用定时器3中断初始化（LED）///////////////////////////////////
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// arr：自动重装值。
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// psc：时钟预分频数
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// 定时器溢出时间计算方法:Tout=((arr+1)*(psc+1))/Ft us.
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// 200*160 /16 = 2ms
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// 定时器时钟84M，分频系数8400，所以84M/8400=10Khz的计数频率，计数5000次为500ms
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// Ft=定时器工作频率,单位:Mhz
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// 这里使用的是定时器3!
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void TIM3_Int_Init(u16 arr, u16 psc)
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{
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TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); /// 使能TIM3时钟
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TIM_TimeBaseInitStructure.TIM_Period = arr; // 自动重装载值
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TIM_TimeBaseInitStructure.TIM_Prescaler = psc; // 定时器分频
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TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up; // 向上计数模式
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TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
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TIM_TimeBaseInit(TIM3, &TIM_TimeBaseInitStructure); // 初始化TIM3
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TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE); // 允许定时器3更新中断
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TIM_Cmd(TIM3, DISABLE); // 使能定时器3
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NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; // 定时器3中断
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01; // 抢占优先级1
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x03; // 子优先级3
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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// 定时器3中断服务函数
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char TIM3_EntryFlag = 0;
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uint16_t TIM3_CountVal = 0;
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void TIM3_IRQHandler(void)
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{
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if (TIM_GetITStatus(TIM3, TIM_IT_Update) == SET) // 溢出中断
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{
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led_time++;
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if (led_time > 250)
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{
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LED_judge();
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led_time = 0;
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// printf("Timer Tiger\n");
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}
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TIM3_EntryFlag = 1;
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TIM3_CountVal++;
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TIM_ClearITPendingBit(TIM3, TIM_IT_Update); // 清除中断标志位
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}
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}
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/**
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* @function:
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* @brief: None
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* @return {*}
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* @author: lzc
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*/
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/*
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void TIM3_Callback(void)
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{
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if (TIM3_EntryFlag)
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{
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TIM3_EntryFlag = 0;
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if (Key_Cal_Flag == 0)
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{
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if (wifi_len < model_num)
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{
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get_opm_number();
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}
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else if (wifi_len >= model_num) // model_num=500,一秒钟
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{
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wifi_len = 0;
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BH_time++;
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stage_time++;
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currentSize_num++;
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if (currentSize_num > 400)
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currentSize_num = 300;
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if (BH_time >= 10) // 10秒钟算一次呼吸
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{
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BH_time = 0;
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start_calculate_flg = 1;
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}
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#if SLEEP_DEBUG_MODE
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if (stage_time >= (12 / 2)) // 12秒钟算一次睡眠分期
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#else
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if (stage_time >= (12 / 2)) // 12秒钟算一次睡眠分期
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#endif
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{
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stage_time = 0;
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start_stage_flg = 1;
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}
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get_opm_number();
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}
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wifi_len++;
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}
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}
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}
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*/
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void TIM3_Callback(void)
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{
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if (TIM3_EntryFlag)
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{
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TIM3_EntryFlag = 0;
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if (Key_Cal_Flag == 0)
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{
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if (wifi_len >= model_num) // model_num=500,一秒钟
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{
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wifi_len = 0;
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BH_time++;
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stage_time++;
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currentSize_num++;
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if (currentSize_num > 400)
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currentSize_num = 300;
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if (BH_time >= 10) // 10秒钟算一次呼吸
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{
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BH_time = 0;
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start_calculate_flg = 1;
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}
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}
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get_opm_number();
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wifi_len++;
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}
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}
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}
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/////////////////////////////////通用定时器4中断初始化(串口接收)///////////////////////////////////
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// arr：自动重装值。
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// psc：时钟预分频数
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// 定时器溢出时间计算方法:Tout=((arr+1)*(psc+1))/Ft us.
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// 200*160 /16 = 2ms
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// 定时器时钟84M，分频系数8400，所以84M/8400=10Khz的计数频率，计数5000次为500ms
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// Ft=定时器工作频率,单位:Mhz
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// 这里使用的是定时器4!
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void TIM4_Int_Init(u16 arr, u16 psc)
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{
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TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); /// 使能TIM4时钟
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TIM_TimeBaseInitStructure.TIM_Period = arr; // 自动重装载值
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TIM_TimeBaseInitStructure.TIM_Prescaler = psc; // 定时器分频
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TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up; // 向上计数模式
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TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
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TIM_TimeBaseInit(TIM4, &TIM_TimeBaseInitStructure); // 初始化TIM3
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TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE); // 允许定时器4更新中断
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TIM_Cmd(TIM4, DISABLE); // 使能定时器4
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Time.OverTimeVal = 2;
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NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQn; // 定时器3中断
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01; // 抢占优先级1
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x04; // 子优先级3
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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// 定时器4中断服务函数
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uint16_t Count_ConnectVal = 0;
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void TIM4_IRQHandler(void)
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{
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if (TIM_GetITStatus(TIM4, TIM_IT_Update) == SET) // 溢出中断
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{
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#if USART_TIMER_IRQ_ENABLE
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Time.CountNum++;
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if (!USART_DealFlag && Time.CountNum >= Time.OverTimeVal)
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{
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// 串口超时，接收完成
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USART_DealFlag = 1;
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// 清除中断标志位
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TIM_ClearITPendingBit(TIM4, TIM_IT_Update);
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// 关闭定时器
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TIM_Cmd(TIM4, DISABLE);
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}
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#endif
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TIM_ClearITPendingBit(TIM4, TIM_IT_Update); // 清除中断标志位
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}
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}
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/////////////////////////////////通用定时器7中断初始化（系统定时器）///////////////////////////////////
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// arr：自动重装值。
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// psc：时钟预分频数
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// 定时器溢出时间计算方法:Tout=((arr+1)*(psc+1))/Ft us.
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// 200*160 /16 = 2ms
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// 定时器时钟84M，分频系数8400，所以84M/8400=10Khz的计数频率，计数5000次为500ms
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// Ft=定时器工作频率,单位:Mhz
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// 这里使用的是定时器7!
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void TIM7_Int_Init(u16 arr, u16 psc)
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{
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TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7, ENABLE); /// 使能TIM6时钟
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TIM_TimeBaseInitStructure.TIM_Period = arr; // 自动重装载值
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TIM_TimeBaseInitStructure.TIM_Prescaler = psc; // 定时器分频
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TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up; // 向上计数模式
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TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
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TIM_TimeBaseInit(TIM7, &TIM_TimeBaseInitStructure); // 初始化TIM7
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TIM_ITConfig(TIM7, TIM_IT_Update, ENABLE); // 允许定时器6更新中断
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TIM_Cmd(TIM7, DISABLE); // 使能定时器6
|
|||
|
|
|
|||
|
|
NVIC_InitStructure.NVIC_IRQChannel = TIM7_IRQn; // 定时器7中断
|
|||
|
|
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01; // 抢占优先级1
|
|||
|
|
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x04; // 子优先级4
|
|||
|
|
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
|
|||
|
|
NVIC_Init(&NVIC_InitStructure);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 定时器7中断服务函数
|
|||
|
|
static uint16_t s_Count_ConnectVal = 0;
|
|||
|
|
|
|||
|
|
extern char MinutesTickCount;
|
|||
|
|
extern char PowerOn_OneMinuteCount;
|
|||
|
|
extern uint16_t FiveMinutesCount;
|
|||
|
|
extern uint16_t OneMinutesCountDown;
|
|||
|
|
extern uint32_t OverTimeCount;
|
|||
|
|
extern uint64_t keepAliveCount;
|
|||
|
|
extern uint32_t ThirdMinutesCountDown ;
|
|||
|
|
void TIM7_IRQHandler(void)
|
|||
|
|
{
|
|||
|
|
if (TIM_GetITStatus(TIM7, TIM_IT_Update) == SET) // 溢出中断
|
|||
|
|
{
|
|||
|
|
s_Count_ConnectVal++;
|
|||
|
|
timeClockCount += 2;
|
|||
|
|
timeClockCount_Send += 2;
|
|||
|
|
if (s_Count_ConnectVal >= 250) // 500ms
|
|||
|
|
{
|
|||
|
|
OverTimeCount++;
|
|||
|
|
keepAliveCount++;
|
|||
|
|
MinutesTickCount++;
|
|||
|
|
PowerOn_OneMinuteCount++;
|
|||
|
|
WarningMsg.SysTick_Count++;
|
|||
|
|
TimeClock_Recalibrate_Count++;
|
|||
|
|
// printf("SysTick : %d\n", MinutesTickCount);
|
|||
|
|
s_Count_ConnectVal = 0;
|
|||
|
|
if (OffBed_Flag == 4 && FiveMinutesCount <= 720) // 在床才会增加
|
|||
|
|
FiveMinutesCount++;
|
|||
|
|
// 时间戳下发成功
|
|||
|
|
if (TimeClock_Flag)
|
|||
|
|
{
|
|||
|
|
if(ThirdMinutesCountDown >= (3 * 60 * 2))
|
|||
|
|
OneMinutesCountDown++;
|
|||
|
|
ThirdMinutesCountDown++;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
OneMinutesCountDown = 0;
|
|||
|
|
ThirdMinutesCountDown = 0;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
TIM_ClearITPendingBit(TIM7, TIM_IT_Update); // 清除中断标志位
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
/////////////////////////////////通用定时器5中断初始化（计算）///////////////////////////////////
|
|||
|
|
// arr：自动重装值。
|
|||
|
|
// psc：时钟预分频数
|
|||
|
|
// 定时器溢出时间计算方法:Tout=((arr+1)*(psc+1))/Ft us.
|
|||
|
|
// 200*160 /16 = 2ms
|
|||
|
|
// 定时器时钟84M，分频系数8400，所以84M/8400=10Khz的计数频率，计数5000次为500ms
|
|||
|
|
// Ft=定时器工作频率,单位:Mhz
|
|||
|
|
// 这里使用的是定时器4!
|
|||
|
|
void TIM5_Int_Init(u16 arr, u16 psc)
|
|||
|
|
{
|
|||
|
|
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
|
|||
|
|
NVIC_InitTypeDef NVIC_InitStructure;
|
|||
|
|
|
|||
|
|
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE); /// 使能TIM5时钟
|
|||
|
|
|
|||
|
|
TIM_TimeBaseInitStructure.TIM_Period = arr; // 自动重装载值
|
|||
|
|
TIM_TimeBaseInitStructure.TIM_Prescaler = psc; // 定时器分频
|
|||
|
|
TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up; // 向上计数模式
|
|||
|
|
TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
|
|||
|
|
|
|||
|
|
TIM_TimeBaseInit(TIM5, &TIM_TimeBaseInitStructure); // 初始化TIM3
|
|||
|
|
|
|||
|
|
TIM_ITConfig(TIM5, TIM_IT_Update, ENABLE); // 允许定时器5更新中断
|
|||
|
|
TIM_Cmd(TIM5, DISABLE); // 使能定时器5
|
|||
|
|
|
|||
|
|
NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn; // 定时器5中断
|
|||
|
|
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01; // 抢占优先级1
|
|||
|
|
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02; // 子优先级3
|
|||
|
|
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
|
|||
|
|
NVIC_Init(&NVIC_InitStructure);
|
|||
|
|
}
|
|||
|
|
// 定时器5中断服务函数
|
|||
|
|
void TIM5_IRQHandler(void)
|
|||
|
|
{
|
|||
|
|
static uint16_t PowerOnCounters = 0;
|
|||
|
|
if (TIM_GetITStatus(TIM5, TIM_IT_Update) == SET) // 溢出中断
|
|||
|
|
{
|
|||
|
|
// 进入定时器关闭串口，防止宕机
|
|||
|
|
USART_ClearITPendingBit(USART1, USART_IT_RXNE);
|
|||
|
|
USART_Cmd(USART1, DISABLE);
|
|||
|
|
if (Key_Cal_Flag == 0)
|
|||
|
|
{
|
|||
|
|
BH_time++;
|
|||
|
|
if (BH_time >= (500 * 2.2)) // 2.2s 算一次心率呼吸
|
|||
|
|
{
|
|||
|
|
BH_time = 0;
|
|||
|
|
start_calculate_flg = 1;
|
|||
|
|
}
|
|||
|
|
// 初次上电先算500次
|
|||
|
|
if (PowerOnCounters < 500)
|
|||
|
|
{
|
|||
|
|
get_opm_number();
|
|||
|
|
PowerOnCounters++;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
if (wifi_len < 60)
|
|||
|
|
{
|
|||
|
|
get_opm_number();
|
|||
|
|
}
|
|||
|
|
else if (wifi_len >= 60) // 一秒钟算一次
|
|||
|
|
{
|
|||
|
|
wifi_len = 0;
|
|||
|
|
stage_time++;
|
|||
|
|
currentSize_num++;
|
|||
|
|
if (currentSize_num > 400)
|
|||
|
|
currentSize_num = 300;
|
|||
|
|
get_opm_number();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
wifi_len++;
|
|||
|
|
}
|
|||
|
|
USART_Cmd(USART1, ENABLE);
|
|||
|
|
TIM_ClearITPendingBit(TIM5, TIM_IT_Update); // 清除中断标志位
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
////////////////////////////////////滴答定时器初始化 （unused）/////////////////////////////////////////
|
|||
|
|
/**
|
|||
|
|
* @brief 配置系统滴答定时器 SysTick
|
|||
|
|
* @param 无
|
|||
|
|
* @retval 1 = failed, 0 = successful
|
|||
|
|
*/
|
|||
|
|
uint32_t SysTick_Init(void)
|
|||
|
|
{
|
|||
|
|
/* 关闭滴答定时器且禁止中断 */
|
|||
|
|
SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
|
|||
|
|
SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk;
|
|||
|
|
/* set reload register */
|
|||
|
|
// NOTE: 由于在延时部分将重载值更改，此处不做修改！
|
|||
|
|
SysTick->LOAD = ((5000000) & SysTick_LOAD_RELOAD_Msk) - 1;
|
|||
|
|
return (1);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* @brief 滴答定时器 SysTick 计时启动
|
|||
|
|
* @param 无
|
|||
|
|
* @retval 无
|
|||
|
|
*/
|
|||
|
|
void SysTick_Time_Start(void)
|
|||
|
|
{
|
|||
|
|
/* 滴答定时器的数据寄存器清零 */
|
|||
|
|
SysTick->VAL = 0;
|
|||
|
|
/* 滴答定时器中断次数清零 */
|
|||
|
|
WarningMsg.SysTick_Count = 0;
|
|||
|
|
/* 启动滴答定时器 */
|
|||
|
|
SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk;
|
|||
|
|
SysTick->CTRL |= SysTick_CTRL_TICKINT_Msk;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* @brief 滴答定时器 SysTick 计时停止
|
|||
|
|
* @param 无
|
|||
|
|
* @retval 无
|
|||
|
|
*/
|
|||
|
|
void SysTick_Time_Stop(void)
|
|||
|
|
{
|
|||
|
|
/* 滴答定时器的数据寄存器清零 */
|
|||
|
|
SysTick->VAL = 0;
|
|||
|
|
/* 滴答定时器中断次数清零 */
|
|||
|
|
WarningMsg.SysTick_Count = 0;
|
|||
|
|
/* 关闭滴答定时器且禁止中断 */
|
|||
|
|
SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
|
|||
|
|
SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* @brief 滴答定时器 SysTick
|
|||
|
|
* @param 无
|
|||
|
|
* @retval 无
|
|||
|
|
*/
|
|||
|
|
uint32_t Get_SysTick_Time(void)
|
|||
|
|
{
|
|||
|
|
// return Time.CountNum;
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* @brief 滴答定时器 SysTick
|
|||
|
|
* @param 无
|
|||
|
|
* @retval 无
|
|||
|
|
*/
|
|||
|
|
void Set_SysTick_OverTimeVal(uint32_t Val)
|
|||
|
|
{
|
|||
|
|
// Time.OverTimeVal = Val;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* @function:RCC_Configuration
|
|||
|
|
* @brief 时钟更改 单位是MHZ
|
|||
|
|
* @return {*}
|
|||
|
|
* @author: lzc
|
|||
|
|
* @description:
|
|||
|
|
*/
|
|||
|
|
void RCC_Configuration(char SysClockFrq)
|
|||
|
|
{
|
|||
|
|
// 16MHz 就直接跳出
|
|||
|
|
if (SysClockFrq == 16)
|
|||
|
|
return; //
|
|||
|
|
RCC_DeInit(); // 将外设 RCC寄存器重设为缺省值
|
|||
|
|
|
|||
|
|
RCC_AHB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); // 使能GPIOB时钟
|
|||
|
|
PWR_MainRegulatorModeConfig(PWR_Regulator_Voltage_Scale1);
|
|||
|
|
|
|||
|
|
RCC_HCLKConfig(RCC_SYSCLK_Div1); // HCLK = CLK SysClockFrq
|
|||
|
|
RCC_PCLK1Config(RCC_HCLK_Div4); // APB1 = CLK SysClockFrq/4
|
|||
|
|
RCC_PCLK2Config(RCC_HCLK_Div2); // APB2 = CLK SysClockFrq/2
|
|||
|
|
|
|||
|
|
RCC_HSICmd(ENABLE); // 使能HSI
|
|||
|
|
while (RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET)
|
|||
|
|
; // 等待HSI使能成功
|
|||
|
|
FLASH_PrefetchBufferCmd(ENABLE);
|
|||
|
|
FLASH_SetLatency(FLASH_Latency_5);
|
|||
|
|
|
|||
|
|
// 设置 PLL 时钟源及倍频系数
|
|||
|
|
RCC_PLLConfig(RCC_PLLSource_HSI, 8, SysClockFrq, 2, 4); // 16MHZ 8 分频->2MHZ 108 倍频 2 分频 = 108MHZ
|
|||
|
|
RCC_PLLCmd(ENABLE); // 如果PLL被用于系统时钟,那么它不能被失能
|
|||
|
|
// 等待指定的 RCC 标志位设置成功 等待PLL初始化成功
|
|||
|
|
while (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
|
|||
|
|
;
|
|||
|
|
|
|||
|
|
// 设置系统时钟（SYSCLK） 设置PLL为系统时钟源
|
|||
|
|
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); // 选择想要的系统时钟
|
|||
|
|
// 等待PLL成功用作于系统时钟的时钟源
|
|||
|
|
// 0x00：HSI 作为系统时钟
|
|||
|
|
// 0x04：HSE作为系统时钟
|
|||
|
|
// 0x08：PLL作为系统时钟
|
|||
|
|
while (RCC_GetSYSCLKSource() != 0x08)
|
|||
|
|
; // 需与被选择的系统时钟对应起来，RCC_SYSCLKSource_PLL
|
|||
|
|
}
|