/**
* @brief This function initializes in Ultra Low Power mode,
* disable the LCD, LSE and configures the unused IOs
* in output push-pull
* @caller main and ADC_Icc_Test
* @param None
* @retval None
*/
void Halt_Init(void)
{
/* Set STM8 in low power */
PWR->CSR2 = 0x2;
LCD_Cmd(DISABLE);
/* To wait LCD disable */
while ((LCD->CR3 & 0x40) != 0x00);
/* Set GPIO in low power*/
GPIO_LowPower_Config();
/* Stop RTC Source clock */
CLK_RTCClockConfig(CLK_RTCCLKSource_Off, CLK_RTCCLKDiv_1);
#ifdef USE_LSE
CLK_LSEConfig(CLK_LSE_OFF);
while ((CLK->ECKCR & 0x04) != 0x00);
#else
CLK_LSICmd(DISABLE);
while ((CLK->ICKCR & 0x04) != 0x00);
#endif
/* Stop clock RTC and LCD */
CLK_PeripheralClockConfig(CLK_Peripheral_RTC, DISABLE);
CLK_PeripheralClockConfig(CLK_Peripheral_LCD, DISABLE);
}
/**
* @brief Current measurement in different MCU modes:
* RUN/SLEEP/LowPower/STANDBY with/without RTC
* @caller main and ADC_Icc_Test
* @param MCU state
* @retval ADC value.
*/
uint16_t ADC_Icc_Test(uint8_t Mcu_State)
{
GPIO_InitTypeDef GPIO_InitStructure;
uint16_t adc_measure;
uint32_t i;
RCC_TypeDef SavRCC;
/* Reset UserButton State */
UserButton = FALSE;
/* Start counter */
GPIO_HIGH(CTN_GPIO_PORT,CTN_CNTEN_GPIO_PIN);
/* Disable the RTC Wakeup Interrupt */
RTC_ITConfig(RTC_IT_WUT, DISABLE);
/* Disable LCD */
LCD_Cmd(DISABLE);
/* wait until LCD disable */
while (LCD_GetFlagStatus(LCD_FLAG_ENS) == SET);
/*Reset Idd-WakeUP flag*/
Idd_WakeUP = FALSE;
/* Set IO in lowpower configuration*/
GPIO_LowPower_Config();
/*Disable fast wakeUp*/
PWR_FastWakeUpCmd(DISABLE);
/* Test MCU state for configuration */
switch (Mcu_State)
{
/* Run mode : Measurement Measurement performed with MSI 4 MHz without RTC*/
case MCU_RUN:
/* switch on MSI clock */
SetHSICLKToMSI(RCC_MSIRange_6,NoDIV2,NoRTC) ;
/* shitch on MSI clock */
Config_RCC(&SavRCC);
SysTick->CTRL = 0;
RCC->APB1ENR = 0;
/* To run nops during measurement:
it's the best case for low current */
for (i=0;i<0xffff;i++) {
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
}
break;
/* SLEEP mode : Measurement performed with MSI 4 MHz without RTC in WFI mode*/
case MCU_SLEEP:
SetHSICLKToMSI(RCC_MSIRange_6,NoDIV2,NoRTC) ;
Config_RCC(&SavRCC);
Config_Systick_50ms();
Delay(1);
/* Request Wait For Interrupt */
PWR_EnterSleepMode(PWR_Regulator_ON,PWR_SLEEPEntry_WFI);
break;
/* RUN LOW POWER mode : Measurement performed with MSI 32 Khz without RTC */
case MCU_LP_RUN:
/* Disable PVD */
PWR_PVDCmd(DISABLE);
/* Enable The ultra Low Power Mode */
PWR_UltraLowPowerCmd(ENABLE);
/* Save the RCC configuration registers */
Config_RCC(&SavRCC);
/* Stop the sys tick in order to avoid IT */
SysTick->CTRL = 0;
#ifdef TESTINRAM
SetHSICLKToMSI(RCC_MSIRange_0,DIV2,NoRTC) ;
PWR_EnterLowPowerRunMode(ENABLE);
while(PWR_GetFlagStatus(PWR_FLAG_REGLP) == RESET) ;
DisableInterrupts();
EnterLPRUNModeRAM();
EnableInterrupts();
#else
/* Swith in MSI 32KHz */
SetHSICLKToMSI(RCC_MSIRange_64KHz,DIV2,NoRTC) ;
PWR_EnterLowPowerRunMode(ENABLE);
while(PWR_GetFlagStatus(PWR_FLAG_REGLP) == RESET) ;
/* Launch the counter */
GPIO_LOW(CTN_GPIO_PORT,CTN_CNTEN_GPIO_PIN);
/* To run the nop during measurement:
it's the best case for low current
until counter reach detected by IT --> Idd_WakeUP */
do{
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
__NOP(); __NOP(); __NOP(); __NOP();
} while (Idd_WakeUP == FALSE );
#endif
PWR_EnterLowPowerRunMode(DISABLE);
while(PWR_GetFlagStatus(PWR_FLAG_REGLP) != RESET) ;
break;
/* SLEEP LOW POWER mode
Measurement done to MSI 32 Khz without RTC
*/
case MCU_LP_SLEEP:
/* Disable PVD */
PWR_PVDCmd(DISABLE);
/* Enable Ultra low power mode */
PWR_UltraLowPowerCmd(ENABLE);
/* To save the RCC configuration registers */
Config_RCC(&SavRCC);
/* To stop the sys tick for avoid IT */
SysTick->CTRL = 0;
/* Swith in MSI 32KHz */
SetHSICLKToMSI(RCC_MSIRange_0,DIV2,NoRTC) ;
#ifdef TESTINRAM
DisableInterrupts();
EnterLPSLEEPModeRAM();
EnableInterrupts();
#else
/* Falling edge for start counter */
GPIO_LOW(CTN_GPIO_PORT,CTN_CNTEN_GPIO_PIN);
/* Request Wait For Interrupt */
PWR_EnterSleepMode(PWR_Regulator_LowPower,PWR_SLEEPEntry_WFI);
#endif
break;
/* STOP modes
Measurement done to MSI 32 Khz without or with RTC
*/
case MCU_STOP_NoRTC:
case MCU_STOP_RTC:
/* Disable PVD */
PWR_PVDCmd(DISABLE);
/* Enable Ultra low power mode */
PWR_UltraLowPowerCmd(ENABLE);
/* To save the RCC configuration registers */
Config_RCC(&SavRCC);
/* To stop the sys tick for avoid IT */
SysTick->CTRL = 0;
/* Swith in MSI 32KHz */
if( Mcu_State == MCU_STOP_NoRTC )
SetHSICLKToMSI(RCC_MSIRange_0,DIV2,NoRTC) ;
else
SetHSICLKToMSI(RCC_MSIRange_0,DIV2,WITHRTC) ;
/* Falling edge for start counter */
GPIO_LOW(CTN_GPIO_PORT,CTN_CNTEN_GPIO_PIN);
/* Request Wait For Interrupt */
PWR_EnterSTOPMode(PWR_Regulator_LowPower,PWR_STOPEntry_WFI);
break;
/* Standby mode without RTC
Measurement done to MSI 32 Khz without RTC
*/
case MCU_STBY:
/* Disable PVD */
PWR_PVDCmd(DISABLE);
/* Enable Ultra low power mode */
PWR_UltraLowPowerCmd(ENABLE);
RTC_OutputTypeConfig(RTC_OutputType_PushPull);
RTC_OutputConfig(RTC_Output_WakeUp,RTC_OutputPolarity_High);
/* To configure PC13 WakeUP output */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 ;
//GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 ;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_400KHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_Init( GPIOC, &GPIO_InitStructure);
// GPIO_Init( GPIOA, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOC, GPIO_PinSource13,GPIO_AF_RTC_AF1) ;
//GPIO_PinAFConfig(GPIOA, GPIO_PinSource0,GPIO_AF_RTC_AF1) ;
Config_RCC(&SavRCC);
SysTick->CTRL = 0;
/* Swith in MSI 32KHz */
SetHSICLKToMSI(RCC_MSIRange_0,DIV2,NoRTC) ;
PWR_WakeUpPinCmd(PWR_WakeUpPin_1,ENABLE);
PWR_UltraLowPowerCmd(ENABLE);
PWR_EnterSTANDBYMode();
/* Stop here WakeUp EXIT on RESET */
break;
}
SetHSICLK();
Config_Systick();
RCC->AHBENR = SavRCC.AHBENR;
PWR_VoltageScalingConfig(PWR_VoltageScaling_Range1);
/* Wait Until the Voltage Regulator is ready */
while (PWR_GetFlagStatus(PWR_FLAG_VOS) != RESET) ;
/* Read ADC for current measurmeent */
adc_measure = Current_Measurement();
/* ICC_CNT_EN Hi */
GPIO_HIGH(CTN_GPIO_PORT,CTN_CNTEN_GPIO_PIN);
UserButton = TRUE;
/* To restore RCC registers */
RCC->APB1ENR = SavRCC.APB1ENR;
RCC->APB2ENR = SavRCC.APB2ENR;
RCC->AHBLPENR = SavRCC.AHBLPENR;
RCC->APB1LPENR = SavRCC.APB1LPENR;
RCC->APB2LPENR = SavRCC.APB2LPENR;
/* Need to reinit RCC for LCD*/
RCC_Configuration();
PWR_EnterLowPowerRunMode(DISABLE);
/* Disable Ultra low power mode */
PWR_UltraLowPowerCmd(DISABLE);
/* Disable FLASH during SLeep LP */
FLASH_SLEEPPowerDownCmd(DISABLE);
Restore_GPIO_Config();
/* Clear Wake Up flag */
PWR_ClearFlag(PWR_FLAG_WU);
/* Enable PVD */
PWR_PVDCmd(ENABLE);
LCD_GLASS_Init();
return (adc_measure);
}
/**
* @brief Current measurement in different MCU modes:
RUN/HALT/LowPower withouto LCD/LowPower with LCD
* @caller main and ADC_Icc_Test
* @param MCU state
* @retval ADC value.
*/
u16 ADC_Icc_Test(u8 Mcu_State)
{
uint16_t res;
uint8_t i;
/* Test MCU state for configuration */
switch (Mcu_State)
{
/* test Run mode nothing to do */
case MCU_RUN:
break;
/* Low power mode */
case MCU_LPR:
Halt_Init();
sim();
/* To prepare to start counter */
GPIO_HIGH(CTN_GPIO_PORT,CTN_CNTEN_GPIO_PIN);
/* To configure Low Power */
LPR_init();
break;
/* Halt mode */
case MCU_HALT:
/* Init for Halt mode */
Halt_Init();
sim();
/* To prepare to start counter */
GPIO_HIGH(CTN_GPIO_PORT,CTN_CNTEN_GPIO_PIN);
/* Falling edge for start counter */
GPIO_LOW(CTN_GPIO_PORT,CTN_CNTEN_GPIO_PIN);
delay_10us(1);
/* MCU in halt during measurement */
/* Wake up by Interrupt done counter Input Port E pin 6 */
halt();
break;
case MCU_LPR_LCD:
PWR->CSR2 = 0x2;
sim();
/* To configure GPIO for reduce current. */
GPIO_LowPower_Config();
/* To prepare to start counter */
GPIO_HIGH(CTN_GPIO_PORT,CTN_CNTEN_GPIO_PIN);
/* To configure Low Power */
LPR_init();
break;
}
sim();
/* re-start ADC chanel 24 for Current measurement */
ADC_Icc_Init();
/* Read ADC for current measurmeent */
/* initialize result */
res = 0;
for(i=8; i>0; i--)
{
/* start ADC convertion by software */
ADC_SoftwareStartConv(ADC1);
/* wait until end-of-covertion */
while( ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0 );
/* read ADC convertion result */
res += ADC_GetConversionValue(ADC1);
}
/* ICC_CNT_EN invalid */
GPIO_HIGH(CTN_GPIO_PORT,CTN_CNTEN_GPIO_PIN);
GPIO_Init(BUTTON_GPIO_PORT, USER_GPIO_PIN,GPIO_Mode_In_FL_IT);
rim();
/* Disable ADC 1 for reduce current */
ADC_Cmd(ADC1, DISABLE);
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, DISABLE);
if (Mcu_State !=MCU_LPR_LCD)
{
CLK_PeripheralClockConfig(CLK_Peripheral_RTC, ENABLE);
LCD_GLASS_Init();
}
return (res>>3);
}
