What wakes you up in the morning? Is it the first rays of sunlight gently creeping in through the window? A paw to the face from a pet that’s decided it’s definitely time you got up? Or maybe you wake up to the sweet sound of birds chirping outside.įor the vast majority of us, it’s none of the above.įigures vary, but somewhere around 80% of us are relying on a sound-based alarm clock to rouse us from our slumbers. where to turn if you’re waking up exhausted and unrefreshed every time your alarm goes off.how to encourage your body and mind to wake up more naturally each morning.why it might be time to ditch your phone as an alarm clock.alternatives to sound-based alarms that may improve how you start your day.how different types of alarm noise can affect how you feel when you wake up.why your alarm clock could be the reason you feel groggy first thing in the morning.).Did you know that your choice of alarm clock can affect how you feel during the day? In this article, we explore just why this is and we’ll cover: If supported, Peripherals wake-up is possible (UART, I2C. MemoriesĪnd voltage supplies are retained. Minimal power saving mainly on the core itself butĭeep sleep mode: medium latency (ms range), clocks are gated to reduced. Sleep mode: low wake-up latency (µs range) (e.g. Minimal power saving mainly on the core itself. Idle mode: low wake-up latency (µs range) (e.g. The board will restart when exit shutdown mode. RTC used as Wakeup source will configure it to use LSE clock source even if another RTC clock source is selected. HardwareSerial used as Wakeup source will configure it to use HSI clock source even if another peripheral clock is configured. Currently not available.īegin() function must be called at least once before idle(), sleep(), deepSleep() or shutdown() functions.ĪttachInterruptWakeup() or enableWakeupFrom() functions should be called before idle(), sleep(), deepSleep() or shutdown() functions. See board documentation for low power mode compatibility. Void enableWakeupFrom(TwoWire *wire, voidFuncPtrVoid callback):Įnable an I2C peripheral in low power mode. Param callback: data: optional pointer to callback data parameters (default NULL). Void enableWakeupFrom(STM32RTC *rtc, voidFuncPtr callback, void * data) Param callback: pointer to a callback to call when the board is waked up. ![]() Void enableWakeupFrom(HardwareSerial *serial, voidFuncPtrVoid callback): enable a UART peripheral in low power mode. In case of SHUTDOWN_MODE only, Wakeup pin capability is activated. Param LowPowerMode: Low power mode which will be used (IDLE_MODE, SLEEP_MODE, DEEP_SLEEP_MODE or SHUTDOWN_MODE). Param mode: interrupt mode (HIGH, LOW, RISING, FALLING or CHANGE) If the pin is a wakeup pin, it is configured as wakeup source (see board documentation). Void attachInterruptWakeup(uint32_t pin, voidFuncPtrVoid callback, uint32_t mode, LP_Mode LowPowerMode): Enable GPIO pin in interrupt mode. Note: With STM32RTC version lower than 1.1.0, the minimum number of milliseconds is 1000 ms. The RTC is used in alarm mode to wakeup the board in ms milliseconds. Param ms (optional): number of milliseconds before to exit the mode. ![]() Void shutdown(uint32_t ms): enter in shutdown mode Void deepSleep(uint32_t ms): enter in deepSleep mode ![]() Void sleep(uint32_t ms): enter in sleep mode The RTC is used in alarm mode to wakeup the chip in ms milliseconds. ![]() Void idle(uint32_t ms): enter in idle mode Arduino library to support STM32 Low Power.
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