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Timer ​

Can be used to execute some code at some point in the future.

Functions ​

void psleep(int millis)

Waits for a certain amount of milliseconds.

Parameters ​
  • millis: The number of milliseconds to wait for

AppTimer * app_timer_register(uint32_t timeout_ms, AppTimerCallback callback, void *callback_data)

Registers a timer that ends up in callback being called some specified time in the future.

Parameters ​
  • timeout_ms: The expiry time in milliseconds from the current time
  • callback: The callback that gets called at expiry time
  • callback_data: The data that will be passed to callback
Returns ​

A pointer to an AppTimer that can be used to later reschedule or cancel this timer

bool app_timer_reschedule(AppTimer *timer_handle, uint32_t new_timeout_ms)

Reschedules an already running timer for some point in the future.

Parameters ​
  • timer_handle: The timer to reschedule
  • new_timeout_ms: The new expiry time in milliseconds from the current time
Returns ​

true if the timer was rescheduled, false if the timer has already elapsed

void app_timer_cancel(AppTimer *timer_handle)

Cancels an already registered timer. Once cancelled the handle may no longer be used for any purpose.

Typedefs ​

typedef struct AppTimer AppTimer

typedef void(* AppTimerCallback) (void *data)

The type of function which can be called when a timer fires. The argument will be the callback_data passed to app_timer_register().

typedef struct AppTimer AppTimer

typedef void(* AppTimerCallback) (void *data)

The type of function which can be called when a timer fires. The argument will be the callback_data passed to app_timer_register().