periodic advertisement

[rushin]

hello there can i periodically advertisement with random data??

[rushin]

like my one data is AA:AB:AC:AD:AE:AF after 1 second i want to make 11:12:13:14:15:16. then after 1 second i want to make it 21:22:23:24:25:26. can you tell me how to do it??

[Quinn]

You change value in advdata and use this method to update: ble_advdata_set(&advdata, NULL);

[rushin]

i can't understand what are you saying. my advertisement function is like

static void advertising_init(void)
{
    uint32_t      err_code;

    ble_advdata_t advdata;
    ble_advdata_t scanrsp;

    // Build advertising data struct to pass into @ref ble_advertising_init.
    memset(&advdata, 0, sizeof(advdata));
    advdata.name_type          = BLE_ADVDATA_SHORT_NAME;
	advdata.short_name_len          = 1; 
    advdata.include_appearance = false;
    advdata.flags              = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;
	//ble_uuid_t          adv_uuids[] = {{0x1234, BLE_UUID_TYPE_BLE}};
	ble_advdata_manuf_data_t        manuf_data;
	uint8_t x1,x,x2,x3,x4,x5,y,y1,y2,y3,y4,y5,z,z1,z2,z3,z4,z5,z6,z7;
	x1=0x50;
	x =0x30;
	y=0x20;
	y1=0x21;
	z1 =0x33;
	z=0x35;
	x2=0x50;
	x3 =0x30;
	y2=0x20;
	y3=0x21;
	z2 =0x33;
	z3=0x35;
		x4=0x50;
	x5 =0x30;
	y4=0x20;
	y5=0x21;
	z4 =0x33;
	z5=0x35;
		z6 =0x33;
	z7=0x35;
	uint8_t r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,r13,r14,r15,r16,r17,r18,r19,r20;
	//HTU21D_Temperature1(&r1,&r2,&r3,&r4,&r5,&r6,&r7,&r8,&r9,&r10,&r11,&r12,&r13,&r14,&r15,&r16,&r17,&r18,&r19,&r20);
//	  uint8_t data[19]                      = {r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,r13,r14,r15,r16,r17,r18,r19}; // Our data to adverise
uint8_t data[20] ={x,x1,x2,x3,x4,x5,y,y1,y2,y3,y4,y5,z,z1,z2,z3,z4,z5,z6,z7};   
//	uint8_t data[20] ={x,x1,y,y1,z,z1,z2,z3,z4};   
				manuf_data.company_identifier       = 0x0059; // Nordics company ID
    manuf_data.data.p_data              = data;     
    manuf_data.data.size                = sizeof(data);
   // advdata.flags                   = flags;                                    // Set some flags. This is a topic for another tutorial
    //advdata.uuids_complete.uuid_cnt = sizeof(adv_uuids) / sizeof(adv_uuids[0]); // Create a list of UUIDs. This is a topic for another tutorial
    //advdata.uuids_complete.p_uuids  = adv_uuids;                                // Create a list of UUIDs. This is a topic for another tutorial
    advdata.p_manuf_specific_data   = &manuf_data;  
	
	
	
    memset(&scanrsp, 0, sizeof(scanrsp));
    scanrsp.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
    scanrsp.uuids_complete.p_uuids  = m_adv_uuids;

    ble_adv_modes_config_t options = {0};
    options.ble_adv_fast_enabled  = BLE_ADV_FAST_ENABLED;
    options.ble_adv_fast_interval = APP_ADV_INTERVAL;
    options.ble_adv_fast_timeout  = APP_ADV_TIMEOUT_IN_SECONDS;

    err_code = ble_advertising_init(&advdata, &scanrsp, &options, on_adv_evt, NULL);
    APP_ERROR_CHECK(err_code);
}

[Quinn]

You want manuf_data.data.p_data to random data, right?

1. advdata, uint8_t data[20] is declared static and global.

2. in while loop, you change any value in data[20].

3. the end, you call ble_advdata_set(&advdata, NULL);

[rushin]

i write function like that

static void advertising_init(void)
{
    uint32_t      err_code;
    ble_advdata_t advdata;
    ble_advdata_t scanrsp;
uint8_t a;
    memset(&advdata, 0, sizeof(advdata));
    advdata.name_type          = BLE_ADVDATA_SHORT_NAME;
	advdata.short_name_len          = 2; 
    advdata.include_appearance = false;
    advdata.flags              = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;
	ble_advdata_manuf_data_t        manuf_data;
	uint8_t x1,x,x2,x3,x4,x5,y,y1,y2,y3,y4,y5,z,z1,z2,z3,z4,z5,z6,z7;
	x1=0x50;
	x =0x30;
	y=0x20;
	y1=0x21;
	z1 =0x33;
	z=0x35;
	x2=0x50;
	x3 =0x30;
	y2=0x20;
	y3=0x21;
	z2 =0x33;
	z3=0x35;
		x4=0x50;
	x5 =0x30;
	y4=0x20;
	y5=0x21;
	z4 =0x33;
	z5=0x35;
		z6 =0x33;
	z7=0x35;
	uint8_t r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,r13,r14,r15,r16,r17,r18,r19,r20;
uint8_t data[20] ={x,x1,x2,x3,x4,x5,y,y1,y2,y3,y4,y5,z,z1,z2,z3,z4,z5,z6,z7};   
   manuf_data.company_identifier       = 0x0059; // Nordics company ID
    manuf_data.data.p_data              = data;     
    manuf_data.data.size                = sizeof(data);
  
    advdata.p_manuf_specific_data   = &manuf_data;  
	
	
	    ble_advdata_manuf_data_t                manuf_data_response;
    uint8_t                                 data_response[] = "s"; // Remember there is a 0 terminator at the end of string
    manuf_data_response.company_identifier       = 0x0059;               
    manuf_data_response.data.p_data              = data_response;        
    manuf_data_response.data.size                = sizeof(data_response);
    memset(&scanrsp, 0, sizeof(scanrsp));
	  scanrsp.name_type               = BLE_ADVDATA_NO_NAME; 
	
    scanrsp.p_manuf_specific_data   = &manuf_data_response;

    ble_adv_modes_config_t options = {0};
    options.ble_adv_fast_enabled  = BLE_ADV_FAST_ENABLED;
    options.ble_adv_fast_interval = APP_ADV_INTERVAL;
    options.ble_adv_fast_timeout  = APP_ADV_TIMEOUT_IN_SECONDS;

		

    err_code = ble_advertising_init(&advdata, &scanrsp, &options, on_adv_evt, NULL);
	
		err_code = ble_advdata_set(&advdata,&scanrsp);
    APP_ERROR_CHECK(err_code);
}