CurieBLE: discovering attributes of connect central fails

[sandeepmistry]

When running the following sketch, and connecting from LightBlue on my Mac, discovering attributes of the connected central fails:

#include <CurieBLE.h>

void setup() {
  Serial.begin(9600);
  while(!Serial);

  BLE.begin();

  BLE.advertise();
}

void loop() {
  BLEDevice central = BLE.central();

  if (central) {
    Serial.print("Central connected: ");
    Serial.println(central.address());

    if (central.discoverAttributes()) {
      Serial.println("Discovered attributes");
    } else {
      Serial.println("Discovering attributes failed!");
    }

    while(central.connected()) {
      
    }

    Serial.print("Central disconnected: ");
    Serial.println(central.address());
  }
}

[noelpaz]

I thought that discoverAttributes works only in central mode and not meant for the peripheral to discover central. I am also adding @sgbihu to this and hope he answers. I am still on vacation.

[noelpaz]

It looks like I cannot assign @sgbihu . @eriknyquist can you send him an email to look into this

[sandeepmistry]

I thought that discoverAttributes works only in central mode and not meant for the peripheral to discover central.

@noelpaz as discussed with @SidLeung during the initial calls, both centrals and peripherals can operate a GATT server and GATT client.

[sgbihu]

This is a bug. The program doesn't add the connected central to the profile buffer. And that makes discover failed. The discover can't find it in the buffer. The current code only consider the connected peripheral device.

[sgbihu]

Hi @sandeepmistry ,

You can get the fix from https://github.com/sgbihu/corelibs-arduino101. The commit is a8c834a.

Thanks!