BLE advertising data update with SDK v17.0

Question

Hello Noridc Support Team and All members, 
 I am new to BLE development. 
 I am using the nRF52 development kit and the SDK v17.0.2 
 My intent is to send the sensor data within BLE advertising packet.[BLE beacon mode] 
 I started of with the BLE beacon example from SDK and was able to send the sensor data. However I faced issues when updating the sensor data at runtime. Data was not being sent. 
 After digging a bit into the stack code and reading forum posts I got to know that from SDK 15 on wards there was a change in the API 
 //Old API err_code = ble_advdata_set(&advdata, NULL); APP_ERROR_CHECK(err_code); 
 //New API err_code = ble_advdata_encode(&siwi_ble_data.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); 
 Also I read the description about the data structure “ble_gap_adv_data_t”, which says this memory will remain unmodified in application RAM and in order to update user needs to create another buffer. 
 I tried few things but was not successful. 
 However I achieved the update of sensor data using SDK v14.2.0 What I would like to know is - what is the correct way to update it using SDK v17.0 - Is there any documentation given by Nordic related to same. - I am sure Nordic must have done these changes for a reason. - I am also sure people must have reported this behaviour since the API was introduced in SDK v15 
 Can anyone help me with the same. 
 Thanks in advance

FormerMember · Accepted Answer

Thanks awneil and Karl Ylvisaker for the support. 
 awneil, I will make sure to follow the correct way to insert code snippets as shown by you. 
 
 Karl Ylvisaker, 
 The issue got resolved after using the BLE advertising library. I was not using the same. 
 Yes. Actually what I meant earlier when I said data was not being sent was "there was no change in advertising data". 
 Now after using the "ble_advertising_advdata_update" function data is being updated. I am verifying it using nRF Connect app. 
 Here is the code snippet 
 
// data structure intialization
BLE_ADVERTISING_DEF(pw_advertising); //< Advertising module instance. 

typedef struct{

 ble_advdata_manuf_data_t manuf_specific_data;
 ble_advertising_init_t pw_init; 

}pw_ble_adv_data_t;

static pw_ble_adv_data_t pw_ble_data;

// Within Advertising Init function
 
err_code = ble_advertising_init(&pw_advertising, &pw_ble_data.pw_init);

if(err_code != NRF_SUCCESS)
{
 NRF_LOG_INFO("Error Occured: %d",err_code);
}

ble_advertising_conn_cfg_tag_set(&pw_advertising, APP_BLE_CONN_CFG_TAG);


// updation code after the timer expires
ble_advertising_advdata_update(&pw_advertising,&pw_ble_data.pw_init.advdata,&pw_ble_data.pw_init.srdata);

Few changes I had to do once I started to use the ble_advertising library 
 
//had to set the following macros to 1

#define BLE_ADVERTISING_ENABLED 1

#define NRF_SDH_BLE_PERIPHERAL_LINK_COUNT 1 
 
 I got a error while debugging the code related to memory not being sufficient 
 So I had to change this "Common project configuration" from 
 RAM_START=0x200018C8 
 to 
 RAM_START=0x20001DC8 
 
 Thanks 
 pwarrier

BLE advertising data update with SDK v17.0

Top Replies