UART not working in nRF52832 as an observer role only.

[Ans Hafeez]

I am using a nRF52832 which act as an observer role only and what is observe it send observed data to another device over UART.

When i turn off scanning and just run UART it works properly but when scanning is on it doesn't send any data on UART. When I add a break point on UART function then it again works.

The program doesn't stuck at any point and it continuously scan the advertising data. I am not getting whats going wrong with UART.

I have added the UART function 'app_uart_put' in that function 'find_adv_uuid()'

[FormerMember]

Which scan interval and scan window do you use?

[Ans Hafeez]

#define SCAN_INTERVAL 0x00A0
#define SCAN_WINDOW 0x0050

[Ans Hafeez]

i have changed the approach. First it scan then stop scanning and put data on UART. but still its not working

[FormerMember]

What does your code look like? Is it similar to the central example ble_app_uart_c?

[Ans Hafeez]

I have just edit the ble_app_hrs_c central example and add the UART code from UART example.

Finally put a uart function in find uuid function.

Have a look on following function Observer +UART.rar

static bool find_adv_uuid(const ble_gap_evt_adv_report_t *p_adv_report, const uint16_t uuid_to_find)
 {

    //Send data on UART
    while (app_uart_put('1') != NRF_SUCCESS);


  uint32_t err_code;
  data_t   adv_data;
  data_t   type_data;

  // Initialize advertisement report for parsing.
  adv_data.p_data     = (uint8_t *)p_adv_report->data;
  adv_data.data_len   = p_adv_report->dlen;

  err_code = adv_report_parse(BLE_GAP_AD_TYPE_16BIT_SERVICE_UUID_MORE_AVAILABLE,
                            &adv_data,
                            &type_data);

 


uint8_t uuid_start = 9;
uint8_t uuid_end = 24;

uint8_t major_start = 25;
uint8_t major_end = 26;
uint8_t minor_start = 27;
uint8_t minor_end = 28;

int chk =1;
int j=0;
int sec=1;

for (int i =uuid_start; i<=uuid_end;i++)
{ 
	if (p_adv_report->data[i] == uuid_two[j])
	{
		sec++;
		if (sec==17)
			nrf_gpio_pin_toggle(LED1);
	}
	else if (p_adv_report->data[i] == uuid_one[j])
	{
		chk++;
		if(chk ==17)
			nrf_gpio_pin_toggle(LED);		
	}	
}
j++;

}
return false;

}

When It found the nearby device then LED blinks but not data send over UART. When I run it in debugger then it works fine and send data over UART.