Disconnected reason 22 BLE

Reason 22 means the host terminates the link itself, which will happen if you accidentally click select button twice. What you can do is moving the following part of the code to some other button function(ex :  if(keys & KEY_DOWN ) to prevent doubling clicking select button. 

    else if (state == BLE_STATE_CONNECTING ||
              state == BLE_STATE_CONNECTED)
    {
      // disconnect
      state = BLE_STATE_DISCONNECTING;

      GAPCentralRole_TerminateLink(connHandle);
      
      LCD_WRITE_STRING("Disconnecting", LCD_PAGE2);
      LCD_WRITE_STRING("", LCD_PAGE4);
    }

Let me know if you still see disconnection after moving that part of the code to other buttons

Thanks for prompt reply. I have removed this part of code to other button, still I see same error.

Also, I want to connect my central to 6 peripherals at a same time. I am using SimpleBLECentral application code. I see in SimpleBLECentral code that it has just one application state that is defined by below enum. Ideally, In order to support 6 peripherals, it should have application six states with each state specifically dedicated to one peripheral.

What all changes , I need to make to connect 6 peripherals at a same time.

enum {

BLE_STATE_IDLE,

BLE_STATE_CONNECTING,

BLE_STATE_CONNECTED,

BLE_STATE_DISCONNECTING

};

Hi,

The number of peripherals that can be connected to the central has nothing to do with the BLE state. A central device coordinates separate connection events for each peripheral. It will enter connection event with device A, and then until the next connection event with device A, the central will connect with device B and exchange data ...etc

Note that our default simpleBLECentral can only support up to 3 peripherals. If you need to connect to more, you can try MAX_NUM_BLE_CONNS = 4 and increasing the heap size.

You can also consider using our multirole project to connect more than 3 devices.
Multirole project can be found here : github.com/.../multi_role