CC2640R2 multirole

Hi Mahesh,

In multi_role_processGATTDiscEvent(), the program looks for Simple Service, and if it's found multi_role discovers characteristic and stores it in charHdl.

If you navigate through the memory and do a read request, mr_doGattRw() is called and sends an attReadReq_t.

    // Do a read
    else
    {
      // Create read request...place in CSTACK
      attReadReq_t req;

      // Fill up read request
      req.handle = discInfo[index].charHdl;

      // Send read request. no need to free if unsuccessful since the request
      // is only placed in CSTACK; not allocated
      status = GATT_ReadCharValue(connHandleMap[index].connHandle, &req, selfEntity);
    }

According to the BLE spec, the slave will give an ATT_READ_RSP or ATT_ERROR_RSP. These are picked up in multi_role_processGATTMsg():

// Find index from connection handle
    connIndex = multi_role_mapConnHandleToIndex(pMsg->connHandle);
    if ((pMsg->method == ATT_READ_RSP)   ||
        ((pMsg->method == ATT_ERROR_RSP) &&
         (pMsg->msg.errorRsp.reqOpcode == ATT_READ_REQ)))
    {
      if (pMsg->method == ATT_ERROR_RSP)
      {
        Display_print1(dispHandle, MR_ROW_STATUS2, 0, "Read Error %d", pMsg->msg.errorRsp.errCode);
      }
      else
      {
        // After a successful read, display the read value
        Display_print1(dispHandle, MR_ROW_STATUS2, 0, "Read rsp: %d", pMsg->msg.readRsp.pValue[0]);
      }

    }

Thanks for quick response.

How can we enable attribute notify in multirole (I need this because when other ble device send attribute data so I can receive it in multi role device)?

Can we use instead of simpleProfile to any other custom profile for read the attribute value?

Thanks

Mahesh

Hi Mahesh,

The attribute must be configured to enable notifications. Each attribute has a Client Characteristic Configuration, that the master can set to 1 in order to "subscibe to notifications". You can read more about this in Simplelink Academy: software-dl.ti.com/.../ble_01_custom_profile.html

If you want to use Simple Profile, Characteristic 4 already has the GATT_PROP_NOTIFY property.

You can use any custom profile in stead of Simple Profile, e.g. use GATT_DiscPrimaryServiceByUUID() with your custom UUID.

Thanks for Replay.

How can we enable notification in client mode in multirole?

Thanks

Mahesh

Hi Mahesh,

You can also use characteristic 1 in simple profile by adding GATT_PROP_NOTIFY to its characteristic and you can read and write through characteristic 1 itself.

Regards,
Abhishek Yakkundi

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Hi Abhishek,

Can you please send code spinet where are you enable notify in multi-role application?

Thanks