Question
BLE extended advertising parsing
Hello Team ST,
I am currently working on parsing my extended BLE data using the BLE_p2pClient_Ext application, specifically the `analyse_ext_adv_report` function to view the advertising data. However, I am having trouble parsing and appending the full extended advertising data. Could you please assist me with this issue?
Thank you in advance.
Here is my modified function.
static uint8_t analyse_ext_adv_report(hci_le_extended_advertising_report_event_rp0 *p_ext_adv_report) {
uint8_t status;
if ((display_filter != 0) && HAL_IS_BIT_SET(p_ext_adv_report->Event_Type, 0x0010)) {
status = 1;
} else {
status = 0;
l_buff_pos = 0;
memset(&l_buff[l_buff_pos], 0, L_BUFF_SIZE);
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos,
"%02X:%02X:%02X:%02X:%02X:%02X | ",
p_ext_adv_report->Address[5], p_ext_adv_report->Address[4],
p_ext_adv_report->Address[3], p_ext_adv_report->Address[2],
p_ext_adv_report->Address[1], p_ext_adv_report->Address[0]);
// Check for legacy or extended advertisement
if (HAL_IS_BIT_SET(p_ext_adv_report->Event_Type, 0x0010)) {
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE, "LEGACY |");
} else {
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE, "EXTENDED |");
}
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, "%4d | ", (int8_t)p_ext_adv_report->RSSI);
// Connection and scanning status
if (HAL_IS_BIT_SET(p_ext_adv_report->Event_Type, 0x0001)) {
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, "CONN |");
} else {
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, " |");
}
if (HAL_IS_BIT_SET(p_ext_adv_report->Event_Type, 0x0002)) {
if (HAL_IS_BIT_SET(p_ext_adv_report->Event_Type, 0x0008)) {
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, "SCAN RSP |");
} else {
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, "SCAN |");
}
} else {
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, " |");
}
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, "%3d | ", p_ext_adv_report->Data_Length);
if (p_ext_adv_report->Advertising_SID != 0xFF) {
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, "%2d | ", p_ext_adv_report->Advertising_SID);
}
if (HAL_IS_BIT_SET(p_ext_adv_report->Event_Type, 0x0020)) {
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, "more data | ");
} else if (HAL_IS_BIT_SET(p_ext_adv_report->Event_Type, 0x0040)) {
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, "trunc data | ");
} else {
/* Nothing to do */
}
// Extended advertisement and non-connectable/non-scannable advertisements
if (!(HAL_IS_BIT_SET(p_ext_adv_report->Event_Type, 0x0010)) && // Extended
!(HAL_IS_BIT_SET(p_ext_adv_report->Event_Type, 0x0001)) && // Non-connectable
!(HAL_IS_BIT_SET(p_ext_adv_report->Event_Type, 0x0002))) { // Non-scannable
uint8_t i = 0, adtype, adlength;
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, "ADV Data: ");
// Loop through the entire advertising data
while (i < p_ext_adv_report->Data_Length) {
adlength = p_ext_adv_report->Data[i];
adtype = p_ext_adv_report->Data[i + 1];
// Print each chunk of advertising data in hex
for (uint8_t j = 0; j < adlength + 1; j++) {
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, "%02X ", p_ext_adv_report->Data[i + j]);
}
i += adlength + 1;
}
}
l_buff_pos += snprintf(&l_buff[l_buff_pos], L_BUFF_SIZE - l_buff_pos, "\n");
// Debug output for the full advertising data
APP_DBG_MSG("%s", l_buff);
}
return status;
}