/*----------------------------------------------------------------------------*
* NAME
* BatteryDataInit
*
* DESCRIPTION
* This function is used to initialise the Battery Service data structure.
*
* PARAMETERS
* None
*
* RETURNS
* Nothing
*----------------------------------------------------------------------------*/
extern void BatteryDataInit(void)
{
if(!IsDeviceBonded())
{
/* Initialise battery level client configuration characterisitic
* descriptor value only if device is not bonded
*/
g_batt_data.level_client_config = gatt_client_config_none;
}
}
/*----------------------------------------------------------------------------*
* NAME
* GattTriggerFastAdverts
*
* DESCRIPTION
* This function is used to trigger fast advertisements.
*
* PARAMETERS
* p_addr [in] Bonded host address
*
* RETURNS
* Nothing
*----------------------------------------------------------------------------*/
extern void GattTriggerFastAdverts(TYPED_BD_ADDR_T *p_addr)
{
if(IsDeviceBonded())
{
g_gatt_data.advert_timer_value = BONDED_DEVICE_ADVERT_TIMEOUT_VALUE;
}
else
{
g_gatt_data.advert_timer_value = FAST_CONNECTION_ADVERT_TIMEOUT_VALUE;
}
/* Trigger fast connections */
GattStartAdverts(p_addr, TRUE);
}
/*----------------------------------------------------------------------------*
* NAME
* BatteryBondingNotify
*
* DESCRIPTION
* This function is used by application to notify bonding status to the
* Battery Service.
*
* PARAMETERS
* None
*
* RETURNS
* Nothing
*----------------------------------------------------------------------------*/
extern void BatteryBondingNotify(void)
{
/* Write data to NVM if bond is established */
if(IsDeviceBonded())
{
/* Write to NVM the client configuration value of battery level
* that was configured prior to bonding
*/
Nvm_Write((uint16*)&g_batt_data.level_client_config,
sizeof(g_batt_data.level_client_config),
g_batt_data.nvm_offset +
BATTERY_NVM_LEVEL_CLIENT_CONFIG_OFFSET);
}
}
/*----------------------------------------------------------------------------*
* NAME
* BatteryReadDataFromNVM
*
* DESCRIPTION
* This function is used to read Battery Service specific data stored in
* NVM.
*
* PARAMETERS
* p_offset [in] Offset to Battery Service data in NVM
* [out] Offset to next entry in NVM
*
* RETURNS
* Nothing
*----------------------------------------------------------------------------*/
extern void BatteryReadDataFromNVM(uint16 *p_offset)
{
g_batt_data.nvm_offset = *p_offset;
/* Read NVM only if devices are bonded */
if(IsDeviceBonded())
{
/* Read battery level client configuration descriptor */
Nvm_Read((uint16*)&g_batt_data.level_client_config,
sizeof(g_batt_data.level_client_config),
*p_offset +
BATTERY_NVM_LEVEL_CLIENT_CONFIG_OFFSET);
}
/* Increment the offset by the number of words of NVM memory required
* by the Battery Service
*/
*p_offset += BATTERY_SERVICE_NVM_MEMORY_WORDS;
}
/*----------------------------------------------------------------------------*
* NAME
* HandleAccessWrite
*
* DESCRIPTION
* This function handles write operations on Battery Service attributes
* maintained by the application and responds with the GATT_ACCESS_RSP
* message.
*
* PARAMETERS
* p_ind [in] Data received in GATT_ACCESS_IND message.
*
* RETURNS
* Nothing
*----------------------------------------------------------------------------*/
extern void BatteryHandleAccessWrite(GATT_ACCESS_IND_T *p_ind)
{
uint8 *p_value = p_ind->value; /* New attribute value */
uint16 client_config; /* Client configuration descriptor */
sys_status rc = sys_status_success; /* Function status */
switch(p_ind->handle)
{
case HANDLE_BATT_LEVEL_C_CFG:
{
/* Write the client configuration descriptor for the battery level
* characteristic.
*/
client_config = BufReadUint16(&p_value);
/* Only notifications are allowed for this client configuration
* descriptor.
*/
if((client_config == gatt_client_config_notification) ||
(client_config == gatt_client_config_none))
{
g_batt_data.level_client_config = client_config;
/* Write battery level client configuration to NVM if the
* device is bonded.
*/
if(IsDeviceBonded())
{
Nvm_Write(&client_config,
sizeof(client_config),
g_batt_data.nvm_offset +
BATTERY_NVM_LEVEL_CLIENT_CONFIG_OFFSET);
}
}
else
{
/* INDICATION or RESERVED */
/* Return error as only notifications are supported */
rc = gatt_status_app_mask;
}
}
break;
default:
rc = gatt_status_write_not_permitted;
break;
}
/* Send ACCESS RESPONSE */
GattAccessRsp(p_ind->cid, p_ind->handle, rc, 0, NULL);
/* Send an update as soon as notifications are configured */
if(g_batt_data.level_client_config == gatt_client_config_notification)
{
/* Reset current battery level to an invalid value so that it
* triggers notifications on reading the current battery level
*/
g_batt_data.level = 0xFF; /* 0 to 100: Valid value range */
/* Update the battery level and send notification. */
BatteryUpdateLevel(p_ind->cid);
}
}
