ESP8266 Community Forum

Posted: **Thu Jun 18, 2015 4:41 am**

Hi,

void ICACHE_FLASH_ATTR user_init()
{
   system_timer_reinit();

   uart_init(BIT_RATE_9600, BIT_RATE_115200);
   system_os_task(recvTask, recvTaskPrio, recvTaskQueue, recvTaskQueueLen);
   os_delay_us(1000);

   os_timer_disarm(&userTimer);
   os_timer_setfn(&userTimer, userTimerCb, NULL);
   os_timer_arm(&userTimer, 10, 1);

    wifi_set_opmode(0x00);
    
    wlan_start(); // Function to start WLAN

}

in this case the timer callback function is called. if i remark wlan_start() then the timer callback function never calls.

Any idea?

Posted: **Fri Jun 19, 2015 2:12 am**

'Timers' and 'task' run only in cycle ets_run() (function ROM-BIOS).
Use hard timer0 (esp_iot_sdk_v1.1.2/examples/driver_lib/driver/hw_timer.c )

Posted: **Sat Jun 20, 2015 4:59 pm**

Thanks, now i use hardware timer and it works.

bat i have the problem that i can´t write my settings data to flash.

Werner

Posted: **Mon Jun 22, 2015 12:31 pm**

Moin,

when using hardware timer you are in interrupt code I guess.
I don't know but I would expect problems running flashing code from interrupt.

What is the meaning of opmode 0?
I don't understand @pvxx argument why the cooperation aspect of SDK should hinder having software
timers.

Does someone know?

Cal

ESP8266 Community Forum

Timer not running when WLAN uninitialized

Timer not running when WLAN uninitialized

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Re: Timer not running when WLAN uninitialized