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/**
******************************************************************************
* @file lls.c
* @author MCD Application Team
* @brief Link Loss Service
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2019 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "common_blesvc.h"
/* Private typedef -----------------------------------------------------------*/
typedef struct
{
uint16_t SvcHdle; /**< Service handle */
uint16_t AlertLevelCharHdle; /**< Characteristic handle */
}LLS_Context_t;
/* Private defines -----------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/**
* START of Section BLE_DRIVER_CONTEXT
*/
PLACE_IN_SECTION("BLE_DRIVER_CONTEXT") static LLS_Context_t LLS_Context;
/**
* END of Section BLE_DRIVER_CONTEXT
*/
/* Private function prototypes -----------------------------------------------*/
static SVCCTL_EvtAckStatus_t LLS_Event_Handler(void *pckt);
/* Functions Definition ------------------------------------------------------*/
/* Private functions ----------------------------------------------------------*/
/**
* @brief Event handler
* @param Event: Address of the buffer holding the Event
* @retval Ack: Return whether the Event has been managed or not
*/
static SVCCTL_EvtAckStatus_t LLS_Event_Handler(void *Event)
{
SVCCTL_EvtAckStatus_t return_value;
hci_event_pckt *event_pckt;
evt_blecore_aci *blecore_evt;
aci_gatt_attribute_modified_event_rp0 * attribute_modified;
LLS_App_Notification_evt_t Notification;
return_value = SVCCTL_EvtNotAck;
event_pckt = (hci_event_pckt *)(((hci_uart_pckt*)Event)->data);
switch(event_pckt->evt)
{
case HCI_VENDOR_SPECIFIC_DEBUG_EVT_CODE:
{
blecore_evt = (evt_blecore_aci*)event_pckt->data;
switch(blecore_evt->ecode)
{
case ACI_GATT_ATTRIBUTE_MODIFIED_VSEVT_CODE:
{
attribute_modified = (aci_gatt_attribute_modified_event_rp0*)blecore_evt->data;
if(attribute_modified->Attr_Handle == (LLS_Context.AlertLevelCharHdle + 1))
{
return_value = SVCCTL_EvtAckFlowEnable;
if(attribute_modified->Attr_Data[0] == 0)
{
Notification.LLS_Evt_Opcode = LLS_NO_ALERT_EVT;
LLS_App_Notification(&Notification);
}
else if(attribute_modified->Attr_Data[0] == 1)
{
Notification.LLS_Evt_Opcode = LLS_MID_ALERT_EVT;
LLS_App_Notification(&Notification);
}
else if(attribute_modified->Attr_Data[0] == 2)
{
Notification.LLS_Evt_Opcode = LLS_HIGH_ALERT_EVT;
LLS_App_Notification(&Notification);
}
}
}
break;
default:
break;
}
}
break; /* HCI_HCI_VENDOR_SPECIFIC_DEBUG_EVT_CODE_SPECIFIC */
default:
break;
}
return(return_value);
}/* end LLS_Event_Handler */
/* Public functions ----------------------------------------------------------*/
/**
* @brief Service initialization
* @param None
* @retval None
*/
void LLS_Init(void)
{
uint16_t uuid;
tBleStatus hciCmdResult;
/**
* Register the event handler to the BLE controller
*/
SVCCTL_RegisterSvcHandler(LLS_Event_Handler);
/**
* Add Link Loss Service
*
* Max_Attribute_Records = 2*no_of_char + 1
* service_max_attribute_record = 1 for Link Loss service +
* 2 for alert level characteristic +
*/
uuid = LINK_LOSS_SERVICE_UUID;
hciCmdResult = aci_gatt_add_service(UUID_TYPE_16,
(Service_UUID_t *) &uuid,
PRIMARY_SERVICE,
3,
&(LLS_Context.SvcHdle));
if (hciCmdResult == BLE_STATUS_SUCCESS)
{
BLE_DBG_LLS_MSG ("Link Loss Service (LLS) is added Successfully %04X\n",
LLS_Context.SvcHdle);
}
else
{
BLE_DBG_LLS_MSG ("FAILED to add Link Loss Service (LLS), Error: %02X !!\n",
hciCmdResult);
}
/**
* Add Alert Level Characteristic
*/
uuid = LINK_LOSS_ALERT_LEVEL_CHARACTERISTIC_UUID;
hciCmdResult = aci_gatt_add_char(LLS_Context.SvcHdle,
UUID_TYPE_16,
(Char_UUID_t *) &uuid ,
1,
CHAR_PROP_READ | CHAR_PROP_WRITE,
ATTR_PERMISSION_NONE,
GATT_NOTIFY_ATTRIBUTE_WRITE,
MIN_ENCRY_KEY_SIZE,
CHAR_VALUE_LEN_CONSTANT,
&(LLS_Context.AlertLevelCharHdle));
if (hciCmdResult == BLE_STATUS_SUCCESS)
{
BLE_DBG_LLS_MSG ("Alert Level Characteristic Added Successfully %04X \n",
LLS_Context.AlertLevelCharHdle);
}
else
{
BLE_DBG_LLS_MSG ("FAILED to add Alert Level Characteristic, Error: %02X !!\n",
hciCmdResult);
}
return;
}
/**
* @brief Characteristic update
* @param UUID: UUID of the characteristic
* @retval AlertLevelValue: The new value to be written
*/
tBleStatus LLS_Update_Char(uint16_t UUID, uint8_t *pPayload)
{
tBleStatus return_value = BLE_STATUS_FAILED;
if(UUID == LINK_LOSS_ALERT_LEVEL_CHARACTERISTIC_UUID)
{
return_value = aci_gatt_update_char_value(LLS_Context.SvcHdle,
LLS_Context.AlertLevelCharHdle,
0, /* charValOffset */
1, /* charValueLen */
(uint8_t *) pPayload);
}
return return_value;
}/* end LLS_Update_Char() */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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