RtosTimer
Deprecated: The EventQueue has superseded the RtosTimer. The RtosTimer and EventQueue duplicate the functionality of timing events outside of interrupt context; however, the EventQueue has additional features to handle deferring other events to multiple contexts.
RtosTimer class hierarchy
Use the RtosTimer class to create and control timer functions in the system. A timer function is called when a time period expires, so both one-shot and periodic timers are possible. You can start, restart or stop a timer.
The thread osTimerThread handles timers. Callback functions run under the control of this thread and may use underlying RTOS API calls.
RtosTimer class reference
| Public Member Functions | |
| RtosTimer (void(*func)(void const *argument), os_timer_type type=osTimerPeriodic, void *argument=NULL) | |
| Create timer. More... | |
| RtosTimer (mbed::Callback< void()> func, os_timer_type type=osTimerPeriodic) | |
| Create timer. More... | |
| template<typename T , typename M > | |
| RtosTimer (T *obj, M method, os_timer_type type=osTimerPeriodic) | |
| Create timer. More... | |
| osStatus | stop (void) |
| Stop the timer. More... | |
| osStatus | start (uint32_t millisec) |
| Start or restart the timer. More... | |
| ~RtosTimer () | |
| RtosTimer destructor. More... | |
RtosTimer example
Control the timing of four LEDs.
#include "mbed.h"
#include "rtos.h"
DigitalOut LEDs[4] = {
DigitalOut(LED1), DigitalOut(LED2), DigitalOut(LED3), DigitalOut(LED4)
};
void blink(void const *n) {
LEDs[(int)n] = !LEDs[(int)n];
}
int main(void) {
RtosTimer led_1_timer(blink, osTimerPeriodic, (void *)0);
RtosTimer led_2_timer(blink, osTimerPeriodic, (void *)1);
RtosTimer led_3_timer(blink, osTimerPeriodic, (void *)2);
RtosTimer led_4_timer(blink, osTimerPeriodic, (void *)3);
led_1_timer.start(2000);
led_2_timer.start(1000);
led_3_timer.start(500);
led_4_timer.start(250);
Thread::wait(osWaitForever);
}