Hi,
I'm having problems getting notifications working. My configuration is:
Central: iOS 8.4 on iPhone 6, Peripheral: custom hardware based on the CC2541F256 and simpleProfile reference design. Stack is 1.4.1.4308
I have analysed the code supporting SIMPLEPROFILE_CHAR4 in the simpleProfile codebase and also the Battery profile. I have focused on getting my code equal to the simpleProfile since the Battery profile does it slightly differently from the TI recommended way. However, I still cannot get it working.
The characteristic that I want notifications for is configured thus:
// ETBB_Profile Peripheral Status Characteristic Properties static uint8 etbbProfilePeripheralStatusCharacProps = GATT_PROP_READ | GATT_PROP_NOTIFY; // ETBB_Profile Peripheral Status Characteristic Value static uint8 etbbProfilePeripheralStatusCharac = PERIPHERAL_STATUS_INITIAL_STATE; // ETBB_Profile Peripheral Status Characteristic Client Configuration static gattCharCfg_t *etbbProfilePeripheralStatusCharacConfig; // ETBB_Profile Peripheral Status Characteristic User Description static uint8 etbbProfilePeripheralStatusCharacUserDesc[18] = "Peripheral status\0";
and the attribute table entry looks like this:
static gattAttribute_t etbbProfileAttrTbl[ETBB_NUM_ATTR_SUPPORTED] =
{
....
// Declaration
{
{ ATT_BT_UUID_SIZE, characterUUID },
GATT_PERMIT_READ,
0,
&etbbProfilePeripheralStatusCharacProps
},
// Value
{
{ ATT_BT_UUID_SIZE, etbbProfilePeripheralStatusCharacUUID },
GATT_PERMIT_READ | GATT_PERMIT_WRITE,
0,
&etbbProfilePeripheralStatusCharac
},
// Configuration
{
{ ATT_BT_UUID_SIZE, clientCharCfgUUID },
GATT_PERMIT_READ | GATT_PERMIT_WRITE,
0,
(uint8 *)&etbbProfilePeripheralStatusCharacConfig
},
// User Description
{
{ ATT_BT_UUID_SIZE, charUserDescUUID },
GATT_PERMIT_READ,
0,
etbbProfilePeripheralStatusCharacUserDesc
},
....
When I subscribe for notifications for this characteristic from iOS, the following code is not hit:
static bStatus_t etbbProfile_WriteAttrCB
....
case GATT_CLIENT_CHAR_CFG_UUID:
status = GATTServApp_ProcessCCCWriteReq( connHandle, pAttr, pValue, len,
offset, GATT_CLIENT_CFG_NOTIFY );
break;
Should it be?
When the peripheral updates this characteristic via etbbProfile_setParameter, this line of code is hit:
case ETBBPROFILE_PERIPHERAL_STATUS_CHARAC:
if ( len == sizeof ( uint8 ) )
{
etbbProfilePeripheralStatusCharac = *((uint8*)value);
// See if Notification has been enabled
GATTServApp_ProcessCharCfg( etbbProfilePeripheralStatusCharacConfig, &etbbProfilePeripheralStatusCharac, FALSE,
etbbProfileAttrTbl, GATT_NUM_ATTRS( etbbProfileAttrTbl ),
INVALID_TASK_ID, etbbProfile_ReadAttrCB );
}
but etbbProfilePeripheralStatusCharacConfig is 0x00 when it should be 0x01
Who should be setting this? My assumption was that it gets set by the client (iOS in my case) when it subscribes for notifications. Does this need to be set by the peripheral during initialization?
Kind regards,
ac
