problem of LED blinky by advertising

Question

I want to turn on /off LED by advertising TX of BLE 
 peripheral : nrf52810 central : nrf52840 Specifically, peripheral performs advertising TX, The central processes LED blinkly when the filter of ADDR is matched by scan_evnt_handler. Sending of advertising of peripheral is sent only when I want to turn on/off the LED. 
 In the code of Example 1, the operation worked as code and worked well. 
 static void scan_evt_handler(scan_evt_t const * p_scan_evt)
{
 ret_code_t err_code;
 switch(p_scan_evt->scan_evt_id)
 {
 case NRF_BLE_SCAN_EVT_FILTER_MATCH:
 {
 nrf_gpio_pin_set(LED1_PIN);
 nrf_delay_ms(2000);
 nrf_gpio_pin_clear(LED1_PIN);
 }break;
 default:
 break;
 }
} 
 In the code of Example 2, sending advertising only turned on first,and then sending advertising could not turn it off. Where is the problem? 
 static void scan_evt_handler(scan_evt_t const * p_scan_evt)
{
 ret_code_t err_code;
 switch(p_scan_evt->scan_evt_id)
 {
 case NRF_BLE_SCAN_EVT_FILTER_MATCH:
 {
 if(nrf_gpio_pin_out_read(LED1_PIN)){
 nrf_gpio_pin_set(LED1_PIN);
 }
 else{
 nrf_gpio_pin_clear(LED1_PIN);
 }
 }break; 
 default:
 break;
 }
} 
 Expected behavior of the code in Example 2. 
 Advertising transmission →Turn on the LED and hold its state. Advertising transmission →Turn off the LED and hold its state. 
 Please let me know solution method.

tomo · Accepted Answer

Hi Jared 
 I solved the problem. 
 After the flag was set due to an interrupt, it was fine to stop the interrupt and clear the pending interrupt. 
 I realized it with the following delay timer code 
 It was very nice to solve 
 void delay_timer (uint32_t time)
{
 uint32_t err_code;
 delay_flag = true;
 err_code = app_timer_start(m_single_shot_timer_id, APP_TIMER_TICKS(time), NULL);
 APP_ERROR_CHECK(err_code);
 while (delay_flag)
 {
 sd_nvic_DisableIRQ(RADIO_IRQn);
 sd_nvic_ClearPendingIRQ(RADIO_IRQn);
 APP_ERROR_CHECK(err_code);
 }
}

problem of LED blinky by advertising

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