change Beacon advertising parameters while button pressed?

[mayuri]

Hi,

I m using NRF52840 as a Beacon. i m using SDK15.2 ble_app_beacon.Advertising is works fine. Now i want to change advertising parameter while button pressed.

#include "app_timer.h"
#include "ble_advdata.h"
#include "bsp.h"
#include "nordic_common.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_sdh.h"
#include "nrf_sdh_ble.h"
#include "nrf_soc.h"
#include <stdbool.h>
#include <stdint.h>

#include "ble_srv_common.h"
#include "boards.h"
#include "nrf_delay.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
 
#define APP_BLE_CONN_CFG_TAG 1                                              // Tag identifying the BLE configuration.    
#define NON_CONNECTABLE_ADV_INTERVAL MSEC_TO_UNITS(500, UNIT_0_625_MS)      // iBeacon specifies an advertising interval of 100ms
#define APP_BEACON_INFO_LENGTH 0x17                                         // Total length of information advertised by the Beacon. */
#define APP_ADV_DATA_LENGTH 0x15                                            // Length of manufacturer specific data in the advertisement. */
#define APP_DEVICE_TYPE 0x02                                                // 0x02 refers to Beacon. 
#define APP_COMPANY_IDENTIFIER 0x004C                                       // Company identifier for Nordic Semiconductor 

#define DEAD_BEEF 0xDEADBEEF                                                // Value used as error code on stack dump
uint32_t mac_addr[];                                                        
uint8_t service_uid[17];
uint8_t *service_uid_pointer;
uint8_t m_beacon_info1[APP_BEACON_INFO_LENGTH]={0};
uint8_t serial_number[4];
uint32_t test_sno;

static ble_gap_adv_params_t m_adv_params;                                      // Parameters to be passed to the stack when starting advertising. 
static uint8_t m_adv_handle = BLE_GAP_ADV_SET_HANDLE_NOT_SET;                  // Advertising handle used to identify an advertising set. 
static uint8_t m_enc_advdata[BLE_GAP_ADV_SET_DATA_SIZE_MAX];                   // Buffer for storing an encoded advertising set. 


      /*Encoded advertising data. */
static ble_gap_adv_data_t m_adv_data =
    {
        .adv_data =
            {
                .p_data = m_enc_advdata,
                .len = BLE_GAP_ADV_SET_DATA_SIZE_MAX},
        .scan_rsp_data =
            {
                .p_data = NULL,
                .len = 0

            }

};

void assert_nrf_callback(uint16_t line_num, const uint8_t *p_file_name) {
  app_error_handler(DEAD_BEEF, line_num, p_file_name);
}
/** Initializing the Advertising.**/
static void advertising_init(void) {
  uint32_t err_code;
  ble_advdata_t advdata;
  uint32_t pin_value;
  uint8_t flags = BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED;
/* Beacon Configuration*/
  ble_advdata_manuf_data_t manuf_specific_data;

  manuf_specific_data.company_identifier = APP_COMPANY_IDENTIFIER;
  m_beacon_info1[0]=APP_DEVICE_TYPE;                       
  m_beacon_info1[1]=APP_ADV_DATA_LENGTH;

  /* service id*/
  for(int i=5;i>1;i--)
  {
    m_beacon_info1[i]=*service_uid_pointer++;
  }

  pin_value = nrf_gpio_pin_read(11);
   if(pin_value==0)
   {
     m_beacon_info1[6]=0x00;      
      nrf_gpio_pin_toggle(14);
                                 // Aided
   }
   else
   {
     m_beacon_info1[6]=0xff;
    // nrf_gpio_pin_clear(14);
   }

 // m_beacon_info1[6]=0x00;                                  // Aided
  m_beacon_info1[7]=0xff;                                  //Reserved id
  m_beacon_info1[8]=0xff;                                  // reserved id
  //m_beacon_info1[18]=0x20;                                 //Major 1st byte
  m_beacon_info1[18]=0x54; 
  m_beacon_info1[19]=0x57;  //Major 2nd byte
  m_beacon_info1[20]=0x4F;                                 //Minor 1st byte
  m_beacon_info1[21]=0x54; 
  //m_beacon_info1[21]=0x55;//Minor  2nd byte
  m_beacon_info1[22]=0xC3;                                 //Rssi @1m

 manuf_specific_data.data.p_data = (uint8_t *)m_beacon_info1;
 manuf_specific_data.data.size = APP_BEACON_INFO_LENGTH;
  // Build and set advertising data.
  memset(&advdata, 0, sizeof(advdata));

  advdata.name_type = BLE_ADVDATA_NO_NAME;
  advdata.flags = flags;
  advdata.p_manuf_specific_data = &manuf_specific_data;

  // Initialize advertising parameters.
  memset(&m_adv_params, 0, sizeof(m_adv_params));

  m_adv_params.properties.type = BLE_GAP_ADV_TYPE_NONCONNECTABLE_NONSCANNABLE_UNDIRECTED;
  m_adv_params.p_peer_addr = NULL;                                                              // Undirected advertisement.
  m_adv_params.filter_policy = BLE_GAP_ADV_FP_ANY;                                               //Filter policy
  m_adv_params.interval = NON_CONNECTABLE_ADV_INTERVAL;
 // m_adv_params.channel_mask[4];
 // m_adv_params.channel_mask[4] = 0xA0;

  m_adv_params.duration = 0;                                                                     // Never time out.

  err_code = ble_advdata_encode(&advdata, m_adv_data.adv_data.p_data, &m_adv_data.adv_data.len);
  APP_ERROR_CHECK(err_code);

  err_code = sd_ble_gap_adv_set_configure(&m_adv_handle, &m_adv_data, &m_adv_params);
  APP_ERROR_CHECK(err_code);
}

/**Starting advertising.*/
static void advertising_start(void) {
  ret_code_t err_code;

  err_code = sd_ble_gap_adv_start(m_adv_handle, APP_BLE_CONN_CFG_TAG);
  APP_ERROR_CHECK(err_code);

  err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
  APP_ERROR_CHECK(err_code);
}
/* Getting MAc address*/
void device_name_get(void) {

  memcpy(serial_number,(uint32_t*)0x10001084,4);
    //NRF_LOG_INFO("Serial Number : %x, %x, %x, %x",serial_number[0],serial_number[1],serial_number[2],serial_number[3]);
    //NRF_LOG_FLUSH();
  mac_addr[0]=NRF_FICR->DEVICEADDR0;
  
  test_sno = test_sno | (serial_number[0] <<24)|(serial_number[1] <<16)|(serial_number[2] <<8)|(serial_number[3]);

  if (test_sno != 0xFFFF7FFFF)
  {
      
    for(int i=0;i<4;i++){
      service_uid[i]=serial_number[i];
      NRF_LOG_INFO("S.NO:%2X",service_uid[i]);
    }
   }
   else
   {
        for(int i=0;i<4;i++){
        service_uid[i]=(uint8_t)((mac_addr[0])>>(8*i));
        NRF_LOG_INFO("MAC:%2X",service_uid[i]);
      }
   }
service_uid_pointer=&service_uid;

}
/*Initializing the BLE stack.*/
static void ble_stack_init(void) {
  ret_code_t err_code;

  err_code = nrf_sdh_enable_request();
  APP_ERROR_CHECK(err_code);

  // Configure the BLE stack.
  // Fetch the start address of the application RAM.
  uint32_t ram_start = 0;
  err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
  APP_ERROR_CHECK(err_code);

  // Enable BLE stack.
  err_code = nrf_sdh_ble_enable(&ram_start);
  APP_ERROR_CHECK(err_code);
}

/** Initializing logging. */
static void log_init(void) {
  ret_code_t err_code = NRF_LOG_INIT(NULL);
  APP_ERROR_CHECK(err_code);

  NRF_LOG_DEFAULT_BACKENDS_INIT();
}

/**Initializing LEDs. */
static void leds_init(void) {
  ret_code_t err_code = bsp_init(BSP_INIT_LEDS, NULL);
  APP_ERROR_CHECK(err_code);
}

/**Initializing timers. */
static void timers_init(void) {
  ret_code_t err_code = app_timer_init();
  APP_ERROR_CHECK(err_code);
}

/** Initializing power management.
 */
static void power_management_init(void) {
  ret_code_t err_code;
  err_code = nrf_pwr_mgmt_init();
  APP_ERROR_CHECK(err_code);
}

/*Function for handling the idle state (main loop).
 *No pending log operation, then sleep until next the next event occurs.
 */
static void idle_state_handle(void) {
  if (NRF_LOG_PROCESS() == false) {
    nrf_pwr_mgmt_run();
  }
}

/*Main Loop */
int main(void) {
  // Initialize.
  nrf_gpio_cfg_input(11,GPIO_PIN_CNF_PULL_Pullup);
  nrf_gpio_cfg_output(14);
  log_init();
  timers_init();
 // leds_init();
  device_name_get();
  power_management_init();
  ble_stack_init();
  advertising_init();
  nrf_drv_clock_init();
  sd_ble_gap_tx_power_set(BLE_GAP_TX_POWER_ROLE_ADV, BLE_GAP_TX_POWER_ROLE_ADV, 0);     //Set transmission Power
  // Start execution.
  NRF_LOG_INFO("Beacon example started.");
  
  advertising_start();

  // Enter main loop.
  for (;;) {
    idle_state_handle();
  }
}

/**
 * @}
 */

Here is my code.I m not getting the result.Please guide me to solve this issue

[Jørgen Holmefjord]

Hi,

I m not getting the result

What result do you expect to get, and what result do you actually get? Should the advertising only change while you hold the button, or should it stay changed after you release the button as well?

Best regards,
Jørgen

[mayuri]

hi Jorgen,

Thanks for ur reply,

while pressing button,the beacon parameters changed from m_beacon_info1[6]=0x00; to 0xFF. Next 10 advertisement the value should not changed.Then it continues to value 0x00..the button acts as an alarm.

While debugging the value should changed from 00 to FF..But in running condition still remains it same..