STM32L0低功耗设计——STOP_RTC模式的真实功耗

1万 · 2019-6-13 15:00

版权声明：本文为博主原创**，未经博主允许不得转载。 https://blog.csdn.net/qingwufeiyang12346/article/details/80685245

单片机型号：STM32L053R8T6

本例程测试STOP_RTC模式的真实功耗，主程序如下：

int main(void)
{
while(1)
{
HAL_Delay(5000);
Target.HAL.Rtc.EnterStopRtcMode();
Target.HAL.SystemClock.SetMode(2);
}
}

1万 · 2019-6-13 15:01

系统进入主循环后，先进行5秒延时，然后进入低功耗模式，低功耗模式设置的RTC时间为4秒，4秒过后退出低功耗模式，重新进行时钟设置。

在进入main函数之前，执行了3个操作：时钟设置、低功耗设置和RTC设置，如下面程序：

class CHAL

{

public:

CSystemClock SystemClock;

CSystemLowPower SystemLowPower;

CRtc Rtc;

};

1万 · 2019-6-13 15:01

时钟设置相关程序如下：

void CClock::SetMode(uint8_t mode)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInit;

__HAL_RCC_PWR_CLK_ENABLE();

if (mode == 0)
{
//Configure the main internal regulator output voltage
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

//Initializes the CPU, AHB and APB busses clocks
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLLMUL_8;
RCC_OscInitStruct.PLL.PLLDIV = RCC_PLLDIV_3;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Target.ErrorHandler(__FILE__, __LINE__);
}

//Initializes the CPU, AHB and APB busses clocks
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
{
Target.ErrorHandler(__FILE__, __LINE__);
}

PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_USART2;
PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Target.ErrorHandler(__FILE__, __LINE__);
}

//Configure the Systick interrupt time
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

//Configure the Systick
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

//SysTick_IRQn interrupt configuration
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
else if (mode == 1)
{
//Configure the main internal regulator output voltage
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

//Initializes the CPU, AHB and APB busses clocks
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLLMUL_8;
RCC_OscInitStruct.PLL.PLLDIV = RCC_PLLDIV_3;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Target.ErrorHandler(__FILE__, __LINE__);
}

//Initializes the CPU, AHB and APB busses clocks
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
{
Target.ErrorHandler(__FILE__, __LINE__);
}

PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_USART2
|RCC_PERIPHCLK_USB;
PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Target.ErrorHandler(__FILE__, __LINE__);
}

//Configure the Systick interrupt time
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

//Configure the Systick
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

//SysTick_IRQn interrupt configuration
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
else if (mode == 2)
{
//Configure the main internal regulator output voltage
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

//Initializes the CPU, AHB and APB busses clocks
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLLMUL_8;
RCC_OscInitStruct.PLL.PLLDIV = RCC_PLLDIV_3;
RCC_OscInitStruct.HSICalibrationValue = 0x10; //HSIÐÞÕýÖµ
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Target.ErrorHandler(__FILE__, __LINE__);
}

//Initializes the CPU, AHB and APB busses clocks
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
{
Target.ErrorHandler(__FILE__, __LINE__);
}

PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_USART2|RCC_PERIPHCLK_RTC;
PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Target.ErrorHandler(__FILE__, __LINE__);
}

//Configure the Systick interrupt time
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

//Configure the Systick
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

//SysTick_IRQn interrupt configuration
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
}

1万 · 2019-6-13 15:01

低功耗设置相关程序如下：

CLowPower::CLowPower(uint8_t mode)
{
      if (mode == 1)
      {
            GPIO_InitTypeDef GPIO_InitStructure;
            HAL_PWREx_EnableUltraLowPower();
HAL_PWREx_EnableFastWakeUp();
            __HAL_RCC_WAKEUPSTOP_CLK_CONFIG(RCC_STOP_WAKEUPCLOCK_HSI);

__HAL_RCC_GPIOA_CLK_ENABLE();
            __HAL_RCC_GPIOB_CLK_ENABLE();
            __HAL_RCC_GPIOC_CLK_ENABLE();
            __HAL_RCC_GPIOD_CLK_ENABLE();
            __HAL_RCC_GPIOH_CLK_ENABLE();
            GPIO_InitStructure.Pin = GPIO_PIN_All;
            GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
            GPIO_InitStructure.Pull = GPIO_NOPULL;
            HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
            HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
            HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
            HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
            HAL_GPIO_Init(GPIOH, &GPIO_InitStructure);
            __HAL_RCC_GPIOA_CLK_DISABLE();
            __HAL_RCC_GPIOB_CLK_DISABLE();
            __HAL_RCC_GPIOC_CLK_DISABLE();
            __HAL_RCC_GPIOD_CLK_DISABLE();
            __HAL_RCC_GPIOH_CLK_DISABLE();
      }
}

1万 · 2019-6-13 15:02

RTC设置相关程序如下：

CRtc::CRtc(void)
{
this->hRTC.Instance = RTC;
pRTC = &this->hRTC;
this->hRTC.Init.HourFormat = RTC_HOURFORMAT_24;
this->hRTC.Init.AsynchPrediv = 124;
this->hRTC.Init.SynchPrediv = 295;
this->hRTC.Init.OutPut = RTC_OUTPUT_DISABLE;
this->hRTC.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
this->hRTC.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
this->hRTC.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if (HAL_RTC_Init(&this->hRTC) != HAL_OK)
{
Target.ErrorHandler(__FILE__, __LINE__);
}
}