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Pebble C API

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Timer

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

Function Documentation

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.

Typedef Documentation

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().

Need some help?

Functions

  • psleep
  • app_timer_register
  • app_timer_reschedule
  • app_timer_cancel

Typedefs

  • AppTimer
  • AppTimerCallback

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