void goSleep(void) {
TM_RTC_Interrupts(TM_RTC_Int_Disable);
TM_USART_Puts(MENU_USART,"Going to sleep state now!\n\r");
USART_DeInit(MENU_USART);
USART_DeInit(GSM_USART);
USART_DeInit(GPS_USART);
I2C_DeInit(I2C3);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOB | RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOD | RCC_AHB1Periph_GPIOE, DISABLE);
TM_RTC_Interrupts(TM_RTC_Int_1s); // 500ms;1,2,5,10,15,30,60 seconds to choose from
TM_LOWPOWER_Standby();
//TM_LOWPOWER_StopUntilInterrupt();
//TM_LOWPOWER_SleepUntilInterrupt(1);
//TM_LOWPOWER_EnableWakeUpPin();
}
int main(void) {
uint8_t i;
/* Initialize system */
SystemInit();
/* Initialize delay */
TM_DELAY_Init();
/* Initialize LEDS */
TM_DISCO_LedInit();
/* Checks if reset was because of wakeup from standby */
if (TM_LOWPOWER_StandbyReset()) {
for (i = 0; i < 10; i++) {
/* Toggle LED red to indicate this */
TM_DISCO_LedToggle(LED_RED);
/* Delay */
Delayms(100);
}
}
/* Initialize RTC with internal clock */
TM_RTC_Init(TM_RTC_ClockSource_Internal);
/* Set RTC to generate wakeup interrupt every 10 seconds */
TM_RTC_Interrupts(TM_RTC_Int_10s);
/* Enable wakeup pin, PA0 */
TM_LOWPOWER_EnableWakeUpPin();
/* Set time to 0 */
TM_DELAY_SetTime(0);
while (1) {
/* Toggle LEDs every 200ms */
if (TM_DELAY_Time() >= 200) {
/* Reset time */
TM_DELAY_SetTime(0);
/* Toggle leds */
TM_DISCO_LedToggle(LED_GREEN);
/* Increase counter */
i++;
/* After 20 toggles, put STM32F4 into STANDBY mode */
if (i == 20) {
/* Reset counter */
i = 0;
/* Put STM32F4 into standby mode */
/* You can wake up MCU with rising edge on PA0 pin */
/* Or with some special interrupts, like RTC, etc */
TM_LOWPOWER_Standby();
/* Toggle RED LED to indicate wakeup from STANDBY mode */
/* This should never happen, because STM32F4 will reset after wakeup from STANDBY */
TM_DISCO_LedToggle(LED_RED);
}
}
}
}
