/**
* @brief Configures the different system clocks.
* @param None
* @retval None
*/
void RCC_Configuration(void)
{
/* Enable HSI Clock */
RCC_HSICmd(ENABLE);
/*!< Wait till HSI is ready */
while (RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET)
{}
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
RCC_MSIRangeConfig(RCC_MSIRange_6);
RCC_HSEConfig(RCC_HSE_OFF);
if(RCC_GetFlagStatus(RCC_FLAG_HSERDY) != RESET )
{
while(1);
}
/* Enable comparator clock LCD and PWR mngt */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_LCD | RCC_APB1Periph_PWR, ENABLE);
/* Enable ADC clock & SYSCFG */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_SYSCFG, ENABLE);
}
/**
* @brief To select MSI as System clock source
* @caller ADC_Icc_Test
* @param Frequence, DIV by 2 ot not , With or without RTC
* @retval None
*/
void SetHSICLKToMSI(uint32_t freq,bool div2,bool With_RTC)
{
/* RCC system reset */
RCC_DeInit();
/* Flash 1 wait state */
FLASH_SetLatency(FLASH_Latency_0);
/* Disable Prefetch Buffer */
FLASH_PrefetchBufferCmd(DISABLE);
/* Disable 64-bit access */
FLASH_ReadAccess64Cmd(DISABLE);
/* Disable FLASH during SLeep */
FLASH_SLEEPPowerDownCmd(ENABLE);
/* Enable the PWR APB1 Clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
/* Select the Voltage Range 3 (1.2V) */
PWR_VoltageScalingConfig(PWR_VoltageScaling_Range3);
/* Wait Until the Voltage Regulator is ready */
while (PWR_GetFlagStatus(PWR_FLAG_VOS) != RESET)
{}
/* To configure the MSI frequency */
RCC_MSIRangeConfig(freq);
/* Select MSI as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_MSI);
/* Wait till MSI is used as system clock source */
while (RCC_GetSYSCLKSource() != 0x00)
{}
if (div2)
{
RCC_HCLKConfig(RCC_SYSCLK_Div2);
}
RCC_HSICmd(DISABLE);
/* Disable HSE clock */
RCC_HSEConfig(RCC_HSE_OFF);
/* Disable LSE clock */
if (! With_RTC)
RCC_LSEConfig(RCC_LSE_OFF);
/* Disable LSI clock */
RCC_LSICmd(DISABLE);
}
void powerStateCheck() {
if (unlikely(current_power_state != new_power_state)) {
switch (new_power_state) {
case POWER_STATE_HI_SPEED:
// Для более быстрого изменения напряжения питания ядра
if (current_power_state == POWER_STATE_LOW_SPEED) {
RCC_MSIRangeConfig(RCC_MSIRange_4);
}
PWR_VoltageScalingConfig(PWR_VoltageScaling_Range2);
RCC_MSIRangeConfig(RCC_MSIRange_6);
currentCPU_HZ = powerStateClockFrequency(new_power_state);
SysTick_Config(currentCPU_HZ / configTICK_RATE_HZ);
break;
case POWER_STATE_MED_SPEED:
RCC_MSIRangeConfig(RCC_MSIRange_4);
currentCPU_HZ = powerStateClockFrequency(new_power_state);
SysTick_Config(currentCPU_HZ / configTICK_RATE_HZ);
if (current_power_state == POWER_STATE_HI_SPEED) {
PWR_VoltageScalingConfig(PWR_VoltageScaling_Range3);
}
break;
case POWER_STATE_LOW_SPEED:
if (current_power_state == POWER_STATE_HI_SPEED) {
// Для более быстрого изменения питания ядра
RCC_MSIRangeConfig(RCC_MSIRange_4);
PWR_VoltageScalingConfig(PWR_VoltageScaling_Range3);
}
// Окончательный переход на другую частоту
RCC_MSIRangeConfig(RCC_MSIRange_1);
currentCPU_HZ = powerStateClockFrequency(new_power_state);
SysTick_Config(currentCPU_HZ / configTICK_RATE_HZ);
break;
}
// Установка нового состояния энергосбережения
current_power_state = new_power_state;
}
}
void initPowerSubsystem() {
RCC_MSIRangeConfig(RCC_MSIRange_4);
new_power_state = POWER_STATE_MED_SPEED;
currentCPU_HZ = powerStateClockFrequency(new_power_state);
SysTick_Config(powerStateClockFrequency(new_power_state) / configTICK_RATE_HZ);
current_power_state = new_power_state;
PWR_VoltageScalingConfig(PWR_VoltageScaling_Range3);
FLASH_SetLatency(FLASH_Latency_0);
FLASH_PrefetchBufferCmd(DISABLE);
FLASH_ReadAccess64Cmd(DISABLE);
}
/**
* @brief Configures the different system clocks.
* @param None
* @retval None
*/
void RCC_Configuration(void)
{
RCC_HSICmd(ENABLE);//Enable HSI Clock
while (RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);//!< Wait till HSI is ready
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI); //Set HSI as sys clock
RCC_MSIRangeConfig(RCC_MSIRange_6);//Set MSI clock range to ~4.194MHz*/
RCC_HSEConfig(RCC_HSE_OFF); /*Disable HSE*/
if(RCC_GetFlagStatus(RCC_FLAG_HSERDY) != RESET )
{
while(1); //Stay in infinite loop if HSE is not disabled*/
}
}
/**
* @brief Configures the different system clocks.
* @param None
* @retval None
*/
void RCC_Configuration(void)
{
/* Enable HSI Clock */
RCC_HSICmd(ENABLE);
/*!< Wait till HSI is ready */
while (RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET)
{}
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
RCC_MSIRangeConfig(RCC_MSIRange_6);
/* Enable the GPIOs Clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC| RCC_AHBPeriph_GPIOD| RCC_AHBPeriph_GPIOE| RCC_AHBPeriph_GPIOH, ENABLE);
/* Enable comparator clock LCD and PWR mngt */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_COMP | RCC_APB1Periph_LCD | RCC_APB1Periph_PWR,ENABLE);
/* Enable ADC clock & SYSCFG */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_SYSCFG , ENABLE);
/* Allow access to the RTC */
PWR_RTCAccessCmd(ENABLE);
/* Reset Backup Domain */
RCC_RTCResetCmd(ENABLE);
RCC_RTCResetCmd(DISABLE);
/* LSE Enable */
RCC_LSEConfig(RCC_LSE_ON);
/* Wait till LSE is ready */
while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
{}
RCC_RTCCLKCmd(ENABLE);
/* LCD Clock Source Selection */
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
RCC_HSEConfig(RCC_HSE_OFF);
if(RCC_GetFlagStatus(RCC_FLAG_HSERDY) != RESET )
{
while(1);
}
}
/**
* @brief Selects MSI (64KHz) as System clock source and configure
* HCLK, PCLK2 and PCLK1 prescalers.
* @param None
* @retval None
*/
void SetHCLKToMSI_64KHz(void)
{
/* RCC system reset */
RCC_DeInit();
/* Flash 0 wait state */
FLASH_SetLatency(FLASH_Latency_0);
/* Disable Prefetch Buffer */
FLASH_PrefetchBufferCmd(DISABLE);
/* Disable 64-bit access */
FLASH_ReadAccess64Cmd(DISABLE);
/* Enable the PWR APB1 Clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
/* Select the Voltage Range 3 (1.2V) */
PWR_VoltageScalingConfig(PWR_VoltageScaling_Range3);
/* Wait Until the Voltage Regulator is ready */
while (PWR_GetFlagStatus(PWR_FLAG_VOS) != RESET)
{}
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK */
RCC_PCLK1Config(RCC_HCLK_Div1);
/* Set MSI clock range to 64KHz */
RCC_MSIRangeConfig(RCC_MSIRange_0);
/* Select MSI as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_MSI);
/* Wait till PLL is used as system clock source */
while (RCC_GetSYSCLKSource() != 0x00)
{}
}
/**
* @brief This function configures the system to enter Low Power Run mode for
* current consumption measurement purpose.
* The maximum clock when the system is in Low Power Run mode is ~128KHz.
* This mode can only be entered when Voltage Range 2 is selected.
* Low Power Run Mode from SRAM:
* =============================
* - System Running at MSI (~32KHz)
* - Flash 0 wait state
* - Voltage Range 2
* - Code running from Internal SRAM
* - All peripherals OFF
* - FLASH switched OFF
* - VDD from 1.65V to 3.6V
* - Current Consumption ~10.5uA
* - Wakeup using Key Button PA.00
* Low Power Run Mode from FLASH:
* ==============================
* - System Running at MSI (~32KHz)
* - Flash 0 wait state
* - Voltage Range 2
* - Code running from Internal FLASH
* - All peripherals OFF
* - VDD from 1.65V to 3.6V
* - Current Consumption ~25uA
* - Wakeup using Key Button PA.00
* @param None
* @retval None
*/
void LowPowerRunMode_Measure(void)
{
/* Configure the System Clock to MSI Range 0 (65KHz). ----------------------*/
/* RCC system reset */
RCC_DeInit();
/* Flash 0 wait state */
FLASH_SetLatency(FLASH_Latency_0);
/* Disable Prefetch Buffer */
FLASH_PrefetchBufferCmd(DISABLE);
/* Disable 64-bit access */
FLASH_ReadAccess64Cmd(DISABLE);
/* Enable the PWR APB1 Clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
/* Select the Voltage Range 2 (1.5V) */
PWR_VoltageScalingConfig(PWR_VoltageScaling_Range2);
/* Wait Until the Voltage Regulator is ready */
while(PWR_GetFlagStatus(PWR_FLAG_VOS) != RESET)
{
}
/* HCLK = SYSCLK/2 = ~32KHz */
RCC_HCLKConfig(RCC_SYSCLK_Div2);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK */
RCC_PCLK1Config(RCC_HCLK_Div1);
/* Set MSI clock range to 65.536KHz */
RCC_MSIRangeConfig(RCC_MSIRange_0);
/* Select MSI as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_MSI);
/* Wait till PLL is used as system clock source */
while (RCC_GetSYSCLKSource() != 0x00)
{}
/* Configure all GPIO as analog to reduce current consumption on non used IOs */
/* Enable GPIOs clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC |
RCC_AHBPeriph_GPIOD | RCC_AHBPeriph_GPIOE | RCC_AHBPeriph_GPIOH |
RCC_AHBPeriph_GPIOF | RCC_AHBPeriph_GPIOG, ENABLE);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_Init(GPIOH, &GPIO_InitStructure);
GPIO_Init(GPIOF, &GPIO_InitStructure);
GPIO_Init(GPIOG, &GPIO_InitStructure);
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Disable GPIOs clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC |
RCC_AHBPeriph_GPIOD | RCC_AHBPeriph_GPIOE | RCC_AHBPeriph_GPIOH |
RCC_AHBPeriph_GPIOF | RCC_AHBPeriph_GPIOG, DISABLE);
/* Configure Key Button*/
STM_EVAL_PBInit(BUTTON_KEY,BUTTON_MODE_GPIO);
/* Wait Until Key button pressed */
while(STM_EVAL_PBGetState(BUTTON_KEY) == RESET)
{
}
/* Wait Until Key button pressed */
while(STM_EVAL_PBGetState(BUTTON_KEY) != RESET)
{
}
/* Enter RUN LP Mode */
PWR_EnterLowPowerRunMode(ENABLE);
/* Wait until the system enters RUN LP and the Regulator is in LP mode */
while(PWR_GetFlagStatus(PWR_FLAG_REGLP) == RESET)
{
}
/* Jump to Internal SRAM and Switch the internal FLASH OFF */
#if defined (LP_RUN_SRAM_MODE)
LowPowerRunModeSRAM_Measure();
#elif defined (LP_RUN_FLASH_MODE)
/* Wait Until Key button pressed */
while(STM_EVAL_PBGetState(BUTTON_KEY) == RESET)
{
}
/* Wait Until Key button pressed */
while(STM_EVAL_PBGetState(BUTTON_KEY) != RESET)
{
}
#endif
/* Exit the RUN LP Mode */
PWR_EnterLowPowerRunMode(DISABLE);
/* Wait until the system exits RUN LP and the Regulator is in main mode */
while(PWR_GetFlagStatus(PWR_FLAG_REGLP) != RESET)
{
}
/* Infinite loop */
while (1)
{
}
}
/**
* @brief This function configures the system to enter Low Power Sleep mode for
* current consumption measurement purpose.
* The maximum clock when the system is in Low Power Run mode is ~128KHz.
* This mode can only be entered when Voltage Range 2 is selected.
* Low Power Sleep Mode
* ====================
* - System Running at MSI (~32KHz)
* - Flash 0 wait state
* - Voltage Range 2
* - Code running from Internal FLASH
* - All peripherals OFF
* - VDD from 1.65V to 3.6V
* - Current Consumption ~4.07uA
* - Wakeup using EXTI Line (Key Button PA.00)
* @param None
* @retval None
*/
void LowPowerSleepMode_Measure(void)
{
/* Configure the System Clock to MSI Range 0 (65KHz). ----------------------*/
/* RCC system reset */
RCC_DeInit();
/* Flash 0 wait state */
FLASH_SetLatency(FLASH_Latency_0);
/* Disable Prefetch Buffer */
FLASH_PrefetchBufferCmd(DISABLE);
/* Disable 64-bit access */
FLASH_ReadAccess64Cmd(DISABLE);
/* Enable the PWR APB1 Clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
/* Select the Voltage Range 2 (1.5V) */
PWR_VoltageScalingConfig(PWR_VoltageScaling_Range2);
/* Wait Until the Voltage Regulator is ready */
while(PWR_GetFlagStatus(PWR_FLAG_VOS) != RESET)
{
}
/* HCLK = SYSCLK/2 = ~32KHz */
RCC_HCLKConfig(RCC_SYSCLK_Div2);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK */
RCC_PCLK1Config(RCC_HCLK_Div1);
/* Set MSI clock range to 65.536KHz */
RCC_MSIRangeConfig(RCC_MSIRange_0);
/* Select MSI as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_MSI);
/* Wait till PLL is used as system clock source */
while (RCC_GetSYSCLKSource() != 0x00)
{}
/* Configure all GPIO as analog to reduce current consumption on non used IOs */
/* Enable GPIOs clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC |
RCC_AHBPeriph_GPIOD | RCC_AHBPeriph_GPIOE | RCC_AHBPeriph_GPIOH |
RCC_AHBPeriph_GPIOF | RCC_AHBPeriph_GPIOG, ENABLE);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_Init(GPIOH, &GPIO_InitStructure);
GPIO_Init(GPIOF, &GPIO_InitStructure);
GPIO_Init(GPIOG, &GPIO_InitStructure);
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Disable GPIOs clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC |
RCC_AHBPeriph_GPIOD | RCC_AHBPeriph_GPIOE | RCC_AHBPeriph_GPIOH |
RCC_AHBPeriph_GPIOF | RCC_AHBPeriph_GPIOG, DISABLE);
/* Configure Key Button*/
STM_EVAL_PBInit(BUTTON_KEY,BUTTON_MODE_GPIO);
/* Wait Until Key button pressed */
while(STM_EVAL_PBGetState(BUTTON_KEY) == RESET)
{
}
/* Wait Until Key button pressed */
while(STM_EVAL_PBGetState(BUTTON_KEY) != RESET)
{
}
/* Configure Key Button*/
STM_EVAL_PBInit(BUTTON_KEY,BUTTON_MODE_EXTI);
/* Enable The ultra Low Power Mode */
PWR_UltraLowPowerCmd(ENABLE);
/* Enable the power down mode during Sleep mode */
FLASH_SLEEPPowerDownCmd(ENABLE);
/* Request to enter SLEEP mode with regulator in low power mode */
PWR_EnterSleepMode(PWR_Regulator_LowPower, PWR_SLEEPEntry_WFI);
/* Initialize LED1 on STM32L152-EVAL board */
STM_EVAL_LEDInit(LED1);
/* Infinite loop */
while (1)
{
/* Toggle The LED1 */
STM_EVAL_LEDToggle(LED1);
/* Inserted Delay */
for(index = 0; index < 0x5FF; index++);
}
}
static void prvSetupHardware( void )
{
/* GPIO, EXTI and NVIC Init structure declaration */
GPIO_InitTypeDef GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
void SystemCoreClockUpdate( void );
/* System function that updates the SystemCoreClock variable. */
SystemCoreClockUpdate();
/* Essential on STM32 Cortex-M devices. */
NVIC_PriorityGroupConfig( NVIC_PriorityGroup_4 );
/* Systick is fed from HCLK/8. */
SysTick_CLKSourceConfig( SysTick_CLKSource_HCLK_Div8 );
/* Set MSI clock range to ~4.194MHz. */
RCC_MSIRangeConfig( RCC_MSIRange_6 );
/* Enable the GPIOs clocks. */
RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB | RCC_AHBPeriph_GPIOC| RCC_AHBPeriph_GPIOD| RCC_AHBPeriph_GPIOE| RCC_AHBPeriph_GPIOH, ENABLE );
/* Enable comparator clocks. */
RCC_APB1PeriphClockCmd( RCC_APB1Periph_COMP, ENABLE );
/* Enable SYSCFG clocks. */
RCC_APB2PeriphClockCmd( RCC_APB2Periph_SYSCFG , ENABLE );
/* Set internal voltage regulator to 1.5V. */
PWR_VoltageScalingConfig( PWR_VoltageScaling_Range2 );
/* Wait Until the Voltage Regulator is ready. */
while( PWR_GetFlagStatus( PWR_FLAG_VOS ) != RESET );
/* Configure User Button pin as input */
GPIO_InitStructure.GPIO_Pin = USERBUTTON_GPIO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
GPIO_Init( USERBUTTON_GPIO_PORT, &GPIO_InitStructure );
/* Select User Button pin as input source for EXTI Line */
SYSCFG_EXTILineConfig( EXTI_PortSourceGPIOA, EXTI_PinSource0 );
/* Configure EXT1 Line 0 in interrupt mode trigged on Rising edge */
EXTI_InitStructure.EXTI_Line = EXTI_Line0 ; /* PA0 for User button AND IDD_WakeUP */
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init( &EXTI_InitStructure );
/* Enable and set EXTI0 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = configLIBRARY_LOWEST_INTERRUPT_PRIORITY;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init( &NVIC_InitStructure );
/* Configure the LED_pin as output push-pull for LD3 & LD4 usage */
GPIO_InitStructure.GPIO_Pin = LD_GREEN_GPIO_PIN | LD_BLUE_GPIO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_Init( LD_GPIO_PORT, &GPIO_InitStructure );
/* Force a low level on LEDs */
GPIO_LOW( LD_GPIO_PORT, LD_GREEN_GPIO_PIN );
GPIO_LOW( LD_GPIO_PORT, LD_BLUE_GPIO_PIN );
}