Disable timer interrupt

[woodwax]

Hello

I impelmented code like this:

os_timer_t timer;
void setup() {
  
....
  os_timer_disarm(&timer);
  os_timer_setfn(&timer, (os_timer_func_t *)periodic_timer, NULL);
  os_timer_arm(&timer, TIMER_PERIOD*1000, 1); 
...
}

void loop() {

....

//here I need instruction that disables the timer interrupt or stops the time counter
some_function();
//here I need intruction that enables the timer interrupt or start the time counter

...

}



void periodic_timer()
{
...
}

I need instrction that disables timer interrupts. I know os_timer_arm or os_timer_disarm but these functions resets the timer counter and its start from the beginning. I need function that only stops counter or disables the interrupt. Thank You!

[system]

Without knowing anything about os_timer_t, you can't expect us to help you.

[woodwax]

Ahh sorry, this is on ESP8266 module. Here is and here

[woodwax]

Without knowing anything about os_timer_t, you can't expect us to help you.

os_timer_t is the following:

#define os_timer_t ETSTimer

typedef struct _ETSTIMER_ {
    struct _ETSTIMER_    *timer_next;
    uint32_t              timer_expire;
    uint32_t              timer_period;
    ETSTimerFunc         *timer_func;
    void                 *timer_arg;
} ETSTimer;

[jmparatte]

woodwax:
...
I need instrction that disables timer interrupts. I know os_timer_arm or os_timer_disarm but these functions resets the timer counter and its start from the beginning. I need function that only stops counter or disables the interrupt. Thank You!

Before disarm, read the timer and use that value as an offset added to the next arm.

[woodwax]

Like this?

os_timer_t timer;
uint32_t temp_expire;

temp_expire=timer.expire;
os_timer_disarm(&timer)

some functions......

os_timer_arm(&timer);
timer.expire=temp_expire;

[themastermind918]

os_timer_disarm(&timer); resets and disable the timer too. if you call it in periodic_timer(), your code will run once only.

#include <ESP8266WiFi.h>
unsigned int clock_tick = 0;
os_timer_t timer;
void setup() {
 Serial.begin(115200);

  os_timer_disarm(&timer);
  os_timer_setfn(&timer, (os_timer_func_t *)periodic_timer, NULL);
  os_timer_arm(&timer, 200, 1); 

}

void loop() {

}

void periodic_timer()
{
clock_tick +=1;
Serial.println(i);
if(clock_tick == 100)
os_timer_disarm(&timer);
}