Shaikh Ahmed

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10 years, 4 months ago.

Runtime advertising data updating

Hello,

I am trying to update the advertising data in real time. I have called clearAdvertisingPayload() after stopAdvertising() method and then regenerated the whole payload again as mentioned here https://developer.mbed.org/questions/55455/Updating-parameter-of-Payload-during-BLE/.

But when I scan with the nRF Master Control Panel I can see that the values aren't updated. Can anybody explain me what am I missing here please?

Thanks in advance. My code is:

BLEDevice ble;
const static char     DEVICE_NAME[]= "OldName";
const static char     DEVICE_NAME2[]= "NewName";
const static uint8_t AdvData[] = {"OldData"}; 
const static uint8_t AdvData2[] = {"NewData"};

void main() {
  ble.init();
  int counter = 1, i = 10;
  ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE );
  ble.setAdvertisingType(GapAdvertisingParams::ADV_SCANNABLE_UNDIRECTED);
  ble.accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData, sizeof(AdvData));
  ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));           
  ble.setAdvertisingInterval(160);
  ble.startAdvertising();

  while (true) {
        if(counter++ == i) { //this is simply to execute this after the first time BLE starts advertising
            ble.stopAdvertising();
            ble.clearAdvertisingPayload();
            ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE );
            ble.setAdvertisingType(GapAdvertisingParams::ADV_SCANNABLE_UNDIRECTED);
            ble.accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, AdvData2,sizeof(AdvData2));
            ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME2, sizeof(DEVICE_NAME2));           
            ble.setAdvertisingInterval(160);
            ble.startAdvertising();
        }
        ble.waitForEvent();
  }
}
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