how many timers can i open in nrf51822(QFAA) with SDK9.0?

[FormerMember]

hello everyone：

how many timers can i open in nrf51822(QFAA) with SDK9.0? the APP_TIMER_MAX_TIMERS's max value

#define APP_TIMER_MAX_TIMERS 13 /**< Maximum number of simultaneously created timers. */

[Sigurd]

Hi,

There is no fixed max limit. You are only limited by the available RAM. So you should be able to create a couple of hundred timers.

[FormerMember]

ok，i see .thank you very much

[FormerMember]

uint32_t app_timer_create(app_timer_id_t * p_timer_id, app_timer_mode_t mode, app_timer_timeout_handler_t timeout_handler)

we use the function to init timers.it can set "APP_TIMER_MODE_SINGLE_SHOT" or "APP_TIMER_MODE_REPEATED"

you say that only limited by the available RAM..i want to know if i set it to APP_TIMER_MODE_SINGLE_SHOT,when i not use or use use up it , it will also occupy the RAM??

[Sigurd]

Yes, it will occupy RAM. When the app timer is declared, ~4 bytes of RAM is reserved for the timer.

[FormerMember]

both "APP_TIMER_MODE_SINGLE_SHOT" and "APP_TIMER_MODE_REPEATED" will occupy RAM. ok. i see .thank you my friend