/*******************************************************************************
**
** Function BTA_GATTC_RegisterForNotifications
**
** Description This function is called to register for notification of a service.
**
** Parameters client_if - client interface.
** bda - target GATT server.
** p_char_id - pointer to GATT characteristic ID.
**
** Returns OK if registration succeed, otherwise failed.
**
*******************************************************************************/
tBTA_GATT_STATUS BTA_GATTC_RegisterForNotifications (tBTA_GATTC_IF client_if,
BD_ADDR bda,
tBTA_GATTC_CHAR_ID *p_char_id)
{
tBTA_GATTC_RCB *p_clreg;
tBTA_GATT_STATUS status = BTA_GATT_ILLEGAL_PARAMETER;
UINT8 i;
if (!p_char_id)
{
APPL_TRACE_ERROR("deregistration failed, unknow char id");
return status;
}
if ((p_clreg = bta_gattc_cl_get_regcb(client_if)) != NULL)
{
for (i = 0; i < BTA_GATTC_NOTIF_REG_MAX; i ++)
{
if ( p_clreg->notif_reg[i].in_use &&
!memcmp(p_clreg->notif_reg[i].remote_bda, bda, BD_ADDR_LEN) &&
bta_gattc_charid_compare(&p_clreg->notif_reg[i].char_id, p_char_id))
{
APPL_TRACE_WARNING("notification already registered");
status = BTA_GATT_OK;
break;
}
}
if (status != BTA_GATT_OK)
{
for (i = 0; i < BTA_GATTC_NOTIF_REG_MAX; i ++)
{
if (!p_clreg->notif_reg[i].in_use)
{
memset((void *)&p_clreg->notif_reg[i], 0, sizeof(tBTA_GATTC_NOTIF_REG));
p_clreg->notif_reg[i].in_use = TRUE;
memcpy(p_clreg->notif_reg[i].remote_bda, bda, BD_ADDR_LEN);
p_clreg->notif_reg[i].char_id.srvc_id.is_primary = p_char_id->srvc_id.is_primary;
bta_gattc_cpygattid(&p_clreg->notif_reg[i].char_id.srvc_id.id, &p_char_id->srvc_id.id);
bta_gattc_cpygattid(&p_clreg->notif_reg[i].char_id.char_id, &p_char_id->char_id);
status = BTA_GATT_OK;
break;
}
}
if (i == BTA_GATTC_NOTIF_REG_MAX)
{
status = BTA_GATT_NO_RESOURCES;
APPL_TRACE_ERROR("Max Notification Reached, registration failed.");
}
}
}
else
{
APPL_TRACE_ERROR("Client_if: %d Not Registered", client_if);
}
return status;
}
/*******************************************************************************
**
** Function BTA_GATTC_RegisterForNotifications
**
** Description This function is called to register for notification of a service.
**
** Parameters client_if - client interface.
** bda - target GATT server.
** handle - GATT characteristic handle.
**
** Returns OK if registration succeed, otherwise failed.
**
*******************************************************************************/
tBTA_GATT_STATUS BTA_GATTC_RegisterForNotifications (tBTA_GATTC_IF client_if,
BD_ADDR bda, UINT16 handle)
{
tBTA_GATTC_RCB *p_clreg;
tBTA_GATT_STATUS status = BTA_GATT_ILLEGAL_PARAMETER;
UINT8 i;
if (!handle)
{
APPL_TRACE_ERROR("deregistration failed, handle is 0");
return status;
}
if ((p_clreg = bta_gattc_cl_get_regcb(client_if)) != NULL) {
for (i = 0; i < BTA_GATTC_NOTIF_REG_MAX; i ++) {
if ( p_clreg->notif_reg[i].in_use &&
!memcmp(p_clreg->notif_reg[i].remote_bda, bda, BD_ADDR_LEN) &&
p_clreg->notif_reg[i].handle == handle) {
APPL_TRACE_DEBUG("notification already registered");
status = BTA_GATT_OK;
break;
}
}
if (status != BTA_GATT_OK) {
for (i = 0; i < BTA_GATTC_NOTIF_REG_MAX; i ++) {
if (!p_clreg->notif_reg[i].in_use) {
memset((void *)&p_clreg->notif_reg[i], 0, sizeof(tBTA_GATTC_NOTIF_REG));
p_clreg->notif_reg[i].in_use = TRUE;
memcpy(p_clreg->notif_reg[i].remote_bda, bda, BD_ADDR_LEN);
p_clreg->notif_reg[i].handle = handle;
status = BTA_GATT_OK;
break;
}
}
if (i == BTA_GATTC_NOTIF_REG_MAX) {
status = BTA_GATT_NO_RESOURCES;
APPL_TRACE_ERROR("Max Notification Reached, registration failed.");
}
}
} else {
APPL_TRACE_ERROR("Client_if: %d Not Registered", client_if);
}
return status;
}
/*******************************************************************************
**
** Function BTA_GATTC_DeregisterForNotifications
**
** Description This function is called to de-register for notification of a service.
**
** Parameters client_if - client interface.
** bda - target GATT server.
** p_char_id - pointer to GATT characteristic ID.
**
** Returns OK if deregistration succeed, otherwise failed.
**
*******************************************************************************/
tBTA_GATT_STATUS BTA_GATTC_DeregisterForNotifications (tBTA_GATTC_IF client_if,
BD_ADDR bda,
tBTA_GATTC_CHAR_ID *p_char_id)
{
tBTA_GATTC_RCB *p_clreg;
tBTA_GATT_STATUS status = BTA_GATT_ILLEGAL_PARAMETER;
UINT8 i;
if (!p_char_id)
{
APPL_TRACE_ERROR("deregistration failed, unknow char id");
return status;
}
if ((p_clreg = bta_gattc_cl_get_regcb(client_if)) != NULL)
{
for (i = 0; i < BTA_GATTC_NOTIF_REG_MAX; i ++)
{
if (p_clreg->notif_reg[i].in_use &&
!memcmp(p_clreg->notif_reg[i].remote_bda, bda, BD_ADDR_LEN) &&
bta_gattc_charid_compare(&p_clreg->notif_reg[i].char_id, p_char_id))
{
APPL_TRACE_DEBUG("Deregistered.");
memset(&p_clreg->notif_reg[i], 0, sizeof(tBTA_GATTC_NOTIF_REG));
status = BTA_GATT_OK;
break;
}
}
if (i == BTA_GATTC_NOTIF_REG_MAX)
{
status = BTA_GATT_ERROR;
APPL_TRACE_ERROR("registration not found");
}
}
else
{
APPL_TRACE_ERROR("Client_if: %d Not Registered", client_if);
}
return status;
}
/*******************************************************************************
**
** Function bta_gattc_clcb_alloc
**
** Description allocate CLCB
**
** Returns pointer to the clcb
**
*******************************************************************************/
tBTA_GATTC_CLCB * bta_gattc_clcb_alloc(tBTA_GATTC_IF client_if, BD_ADDR remote_bda,
tBTA_TRANSPORT transport)
{
UINT8 i_clcb = 0;
tBTA_GATTC_CLCB *p_clcb = NULL;
for (i_clcb = 0; i_clcb < BTA_GATTC_CLCB_MAX; i_clcb++)
{
if (!bta_gattc_cb.clcb[i_clcb].in_use)
{
#if BTA_GATT_DEBUG == TRUE
APPL_TRACE_DEBUG("bta_gattc_clcb_alloc: found clcb[%d] available",i_clcb);
#endif
p_clcb = &bta_gattc_cb.clcb[i_clcb];
p_clcb->in_use = TRUE;
p_clcb->status = BTA_GATT_OK;
p_clcb->transport = transport;
bdcpy(p_clcb->bda, remote_bda);
p_clcb->p_rcb = bta_gattc_cl_get_regcb(client_if);
if ((p_clcb->p_srcb = bta_gattc_find_srcb(remote_bda)) == NULL)
p_clcb->p_srcb = bta_gattc_srcb_alloc(remote_bda);
if (p_clcb->p_rcb != NULL && p_clcb->p_srcb != NULL)
{
p_clcb->p_srcb->num_clcb ++;
p_clcb->p_rcb->num_clcb ++;
}
else
{
/* release this clcb if clcb or srcb allocation failed */
p_clcb->in_use = FALSE;
p_clcb = NULL;
}
break;
}
}
return p_clcb;
}
/*******************************************************************************
**
** Function bta_gattc_hdl_event
**
** Description GATT client main event handling function.
**
**
** Returns void
**
*******************************************************************************/
BOOLEAN bta_gattc_hdl_event(BT_HDR *p_msg)
{
tBTA_GATTC_CB *p_cb = &bta_gattc_cb;
tBTA_GATTC_CLCB *p_clcb = NULL;
tBTA_GATTC_RCB *p_clreg;
#if BTA_GATT_DEBUG == TRUE
APPL_TRACE_DEBUG1("bta_gattc_hdl_event: Event [%s]", gattc_evt_code(p_msg->event));
#endif
switch (p_msg->event)
{
case BTA_GATTC_API_DISABLE_EVT:
bta_gattc_disable(p_cb);
break;
case BTA_GATTC_API_REG_EVT:
bta_gattc_register(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
case BTA_GATTC_INT_START_IF_EVT:
bta_gattc_start_if(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
case BTA_GATTC_API_DEREG_EVT:
p_clreg = bta_gattc_cl_get_regcb(((tBTA_GATTC_DATA *)p_msg)->api_dereg.client_if);
bta_gattc_deregister(p_cb, p_clreg);
break;
case BTA_GATTC_API_OPEN_EVT:
bta_gattc_process_api_open(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
case BTA_GATTC_API_CANCEL_OPEN_EVT:
bta_gattc_process_api_open_cancel(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
case BTA_GATTC_API_REFRESH_EVT:
bta_gattc_process_api_refresh(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
#if BLE_INCLUDED == TRUE
case BTA_GATTC_API_LISTEN_EVT:
bta_gattc_listen(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
case BTA_GATTC_API_BROADCAST_EVT:
bta_gattc_broadcast(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
#endif
case BTA_GATTC_ENC_CMPL_EVT:
bta_gattc_process_enc_cmpl(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
default:
if (p_msg->event == BTA_GATTC_INT_CONN_EVT)
p_clcb = bta_gattc_find_int_conn_clcb((tBTA_GATTC_DATA *) p_msg);
else if (p_msg->event == BTA_GATTC_INT_DISCONN_EVT)
p_clcb = bta_gattc_find_int_disconn_clcb((tBTA_GATTC_DATA *) p_msg);
else
p_clcb = bta_gattc_find_clcb_by_conn_id(p_msg->layer_specific);
if (p_clcb != NULL)
{
bta_gattc_sm_execute(p_clcb, p_msg->event, (tBTA_GATTC_DATA *) p_msg);
}
else
{
APPL_TRACE_DEBUG1("Ignore unknown conn ID: %d", p_msg->layer_specific);
}
break;
}
return(TRUE);
}
