updating global variable in the timer handler

[lance338]

I want to add a global variable that would increase every time the timer handler is called. I can't get it to work with static, volatile, or even pass on as variable. the "counter" below just stay at 0. I'm wondering if I have to store then load this from flash storage in the timeout_handler function. Please help.

volatile uint32_t counter = 0;

static void sensor_level_meas_timeout_handler(void * p_context)
{

.....

counter=counter+1;

display_counter(counter); //this function basically send the counter value via beacon ad's minor. I know this work as I can display a constant value.

....

}

int main(void) 

{

.....

err_code = app_timer_create(&m_sensor_timer_id, APP_TIMER_MODE_REPEATED, sensor_level_meas_timeout_handler);

err_code = app_timer_start(m_sensor_timer_id, SENSOR_LEVEL_MEAS_INTERVAL, NULL);

...

}

[Kenneth]

using 'static volatile uint32_t counter = 0;' should be sufficient. Have you tried to output the counter to UART or RTT by:

NRF_LOG_INFO("counter: %d", counter);