Hi Nordic Engineers,
I have few queries over HFCLK 16 MHz timer.
I am using nrf52840 custom board. IDE - segger embedded studio
#define TIME_IN_US 2600
/**
* @brief Handler for timer events.
*/
void timer_led_event_handler(nrf_timer_event_t event_type, void* p_context)
{
switch (event_type)
{
case NRF_TIMER_EVENT_COMPARE3:
timerenabled = 1;
if(!cal_HR_ir_enabled)
{
DisableHRMLed(); //Disabling RED and Enabling IR
EnableHRMLed(HR_IR_LED);
//printf("Timer IR\r\n");
}
else if(!cal_HR_red_enabled)
{
DisableHRMLed(); //Disabling IR and Enabling RED
EnableHRMLed(HR_RED_LED);
//printf("Timer RED\r\n");
}
break;
default:
//Do nothing.
break;
}
}
void enable_HR_LED_timer(void)
{
uint32_t time_ticks;
uint32_t err_code = NRF_SUCCESS;
//Configure TIMER_LED for generating simple light effect - leds on board will invert his state one after the other.
nrf_drv_timer_config_t led_timer_cfg = NRF_DRV_TIMER_DEFAULT_CONFIG;
err_code = nrf_drv_timer_init(&TIMER_LED, &led_timer_cfg, timer_led_event_handler);
APP_ERROR_CHECK(err_code);
//Time(in microseconds) between consecutive compare events.
time_ticks = nrf_drv_timer_us_to_ticks(&TIMER_LED, TIME_IN_US);
nrf_drv_timer_extended_compare(
&TIMER_LED, NRF_TIMER_CC_CHANNEL3, time_ticks, NRF_TIMER_SHORT_COMPARE3_CLEAR_MASK, true);
nrf_drv_timer_enable(&TIMER_LED);
}
I have enabled HFCLK timer and able to reach timer callback.
The problem is...If I set the Timeout as 2600 us, it seemed only timer callback was running (not even while(1) )
But in 2700 us or greater, each and every functionalities were working fine.
I have to generate ~250us time delay.
I have attached my code snippet and I am using Timer 3
Looking forward for your suggestion.
Regards
Sudharsan
