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cy_ble_ans.c
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cy_ble_ans.c
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/***************************************************************************//**
* \file cy_ble_ans.c
* \version 3.60
*
* \brief
* Contains the source code for the Alert Notification service.
*
********************************************************************************
* \copyright
* Copyright 2017-2021, Cypress Semiconductor Corporation. All rights reserved.
* You may use this file only in accordance with the license, terms, conditions,
* disclaimers, and limitations in the end user license agreement accompanying
* the software package with which this file was provided.
*******************************************************************************/
#include "cy_ble_event_handler.h"
#if defined(CY_IP_MXBLESS)
#if CY_BLE_LIB_HOST_CORE
/*******************************************************************************
* Private Function Prototypes
*******************************************************************************/
static cy_en_ble_gatt_err_code_t Cy_BLE_ANS_EventHandler(uint32_t eventCode, void *eventParam);
static cy_en_ble_gatt_err_code_t Cy_BLE_ANSS_EventHandler(uint32_t eventCode, void *eventParam);
static cy_en_ble_gatt_err_code_t Cy_BLE_ANSC_EventHandler(uint32_t eventCode, void *eventParam);
static cy_en_ble_gatt_err_code_t Cy_BLE_ANSS_WriteEventHandler(cy_stc_ble_gatts_write_cmd_req_param_t *eventParam);
static void Cy_BLE_ANSC_DiscoverCharacteristicsEventHandler(cy_stc_ble_disc_char_info_t *discCharInfo);
static void Cy_BLE_ANSC_DiscoverCharDescriptorsEventHandler(cy_stc_ble_disc_descr_info_t *discDescrInfo);
static void Cy_BLE_ANSC_GetCharRange(cy_stc_ble_disc_range_info_t *charRangeInfo);
static void Cy_BLE_ANSC_NotificationEventHandler(cy_stc_ble_gattc_handle_value_ntf_param_t *eventParam);
static void Cy_BLE_ANSC_WriteResponseEventHandler(const cy_stc_ble_conn_handle_t *eventParam);
static void Cy_BLE_ANSC_ReadResponseEventHandler(cy_stc_ble_gattc_read_rsp_param_t *eventParam);
static void Cy_BLE_ANSC_ErrorResponseEventHandler(const cy_stc_ble_gatt_err_param_t *eventParam);
/*******************************************************************************
* Global Variables
*******************************************************************************/
/* The pointers to the callback functions */
static cy_ble_callback_t Cy_BLE_ANS_ApplCallback = NULL;
static cy_ble_event_handler_cb_t Cy_BLE_ANSC_EventHandlerCallback = NULL;
static cy_ble_event_handler_cb_t Cy_BLE_ANSS_EventHandlerCallback = NULL;
/* The internal storage for the last request handle to check response */
static cy_ble_gatt_db_attr_handle_t cy_ble_anscReqHandle[CY_BLE_MAX_CONNECTION_INSTANCES];
/* The pointer to a global BLE ANS server config structure */
const cy_stc_ble_anss_config_t *cy_ble_anssConfigPtr = NULL;
/* The pointer to a global BLE ANS client config structure */
const cy_stc_ble_ansc_config_t *cy_ble_anscConfigPtr = NULL;
/******************************************************************************
* Function Name: Cy_BLE_ANSS_Init
***************************************************************************//**
*
* This function initializes server of the alert notification service.
*
* \param config: Configuration structure for the ANS.
*
* \return
* \ref cy_en_ble_api_result_t : Return value indicates whether the function succeeded or
* failed. The following are possible error codes.
*
* Error Codes | Description
* ------------ | -----------
* CY_BLE_SUCCESS | The function completed successfully.
* CY_BLE_ERROR_INVALID_PARAMETER | On specifying NULL as input parameter.
* CY_BLE_ERROR_MEMORY_ALLOCATION_FAILED | Buffer overflow in the registration callback.
*
******************************************************************************/
cy_en_ble_api_result_t Cy_BLE_ANSS_Init(const cy_stc_ble_anss_config_t *config)
{
cy_en_ble_api_result_t apiResult;
if(config == NULL)
{
apiResult = CY_BLE_ERROR_INVALID_PARAMETER;
}
else
{
/* Registers a pointer to config structure */
cy_ble_anssConfigPtr = config;
/* Registers event handler for the ANS */
apiResult = Cy_BLE_RegisterServiceEventHandler(&Cy_BLE_ANS_EventHandler);
/* Registers a pointer to server event handler function */
Cy_BLE_ANSS_EventHandlerCallback = &Cy_BLE_ANSS_EventHandler;
}
return(apiResult);
}
/******************************************************************************
* Function Name: Cy_BLE_ANSC_Init
***************************************************************************//**
*
* This function initializes client of the alert notification service.
*
* \param config: Configuration structure for the ANS.
*
* \return
* \ref cy_en_ble_api_result_t : Return value indicates whether the function succeeded or
* failed. The following are possible error codes.
*
* Error Codes | Description
* ------------ | -----------
* CY_BLE_SUCCESS | The function completed successfully.
* CY_BLE_ERROR_INVALID_PARAMETER | On specifying NULL as input parameter.
* CY_BLE_ERROR_MEMORY_ALLOCATION_FAILED | Buffer overflow in the registration callback.
*
******************************************************************************/
cy_en_ble_api_result_t Cy_BLE_ANSC_Init(const cy_stc_ble_ansc_config_t *config)
{
cy_en_ble_api_result_t apiResult;
if((config == NULL) || ((cy_ble_configPtr->params->gattRole & CY_BLE_GATT_CLIENT) == 0u))
{
apiResult = CY_BLE_ERROR_INVALID_PARAMETER;
}
else
{
uint32_t idx;
/* Registers a pointer to config structure */
cy_ble_anscConfigPtr = config;
/* Registers event handler for the ANS */
apiResult = Cy_BLE_RegisterServiceEventHandler(&Cy_BLE_ANS_EventHandler);
/* Registers a pointer to client event handler function */
Cy_BLE_ANSC_EventHandlerCallback = &Cy_BLE_ANSC_EventHandler;
for(idx = 0u; idx < cy_ble_configPtr->params->maxClientCount; idx++)
{
uint32 servCnt = cy_ble_configPtr->context->discServiCount;
uint32 ansServIdx = cy_ble_anscConfigPtr->serviceDiscIdx;
if(cy_ble_configPtr->context->serverInfo[(idx * servCnt) + ansServIdx].range.startHandle ==
CY_BLE_GATT_INVALID_ATTR_HANDLE_VALUE)
{
/* Get pointer to ANS client structure */
cy_stc_ble_ansc_t *anscPtr = (cy_stc_ble_ansc_t *)&cy_ble_anscConfigPtr->attrInfo[idx];
/* Clean client structure */
(void)memset(anscPtr, 0, sizeof(cy_stc_ble_ansc_t));
/* Initialize uuid */
cy_ble_configPtr->context->serverInfo[(idx * servCnt) + ansServIdx].uuid =
CY_BLE_UUID_ALERT_NOTIFICATION_SERVICE;
}
cy_ble_anscReqHandle[idx] = CY_BLE_GATT_INVALID_ATTR_HANDLE_VALUE;
}
}
return(apiResult);
}
/******************************************************************************
* Function Name: Cy_BLE_ANS_RegisterAttrCallback
***************************************************************************//**
*
* Registers a callback function for service-specific attribute operations.
* Service-specific Write Requests from the peer device will not be handled with
* an unregistered callback function.
*
* \param callbackFunc: An application layer event callback function to receive
* events from the PSoC 6 BLE Middleware. The definition of \ref cy_ble_callback_t
* for ANS is:<br>
* typedef void (* cy_ble_callback_t) (uint32_t eventCode, void *eventParam),
* where:
* * eventCode: Indicates the event that triggered this callback
* (e.g. #CY_BLE_EVT_ANSS_NOTIFICATION_ENABLED).
* * eventParam: Contains the parameters corresponding to the
* current event; (e.g. pointer to \ref cy_stc_ble_ans_char_value_t
* structure that contains details of the characteristic
* for which the notification enabled event was triggered).
*
******************************************************************************/
void Cy_BLE_ANS_RegisterAttrCallback(cy_ble_callback_t callbackFunc)
{
Cy_BLE_ANS_ApplCallback = callbackFunc;
}
/******************************************************************************
* Function Name: Cy_BLE_ANSS_WriteEventHandler
***************************************************************************//**
*
* Handles Write Request event for alert notification service.
*
* \param eventParam: The pointer to the data that came with a Write Request for
* alert notification service.
*
* \return
* Return a value of type cy_en_ble_gatt_err_code_t:
* * CY_BLE_GATT_ERR_NONE - The function terminated successfully.
* * CY_BLE_GATT_ERR_INVALID_HANDLE - The handle of client configuration
* characteristic descriptor or characteristic of alert notification service
* is not valid.
* * CY_BLE_GATT_ERR_UNLIKELY_ERROR - An internal stack error occurred.
* * CY_BLE_GATT_ERR_REQUEST_NOT_SUPPORTED - The notification property of a
* specific characteristic of alert notification service is disabled.
*
******************************************************************************/
static cy_en_ble_gatt_err_code_t Cy_BLE_ANSS_WriteEventHandler(cy_stc_ble_gatts_write_cmd_req_param_t *eventParam)
{
cy_stc_ble_ans_char_value_t wrReqParam;
cy_ble_gatt_db_attr_handle_t tmpHandle;
cy_en_ble_gatt_err_code_t gattErr = CY_BLE_GATT_ERR_NONE;
uint32_t fFlag = 0u;
uint32_t event = (uint32_t)CY_BLE_EVT_ANSS_WRITE_CHAR;
tmpHandle = eventParam->handleValPair.attrHandle;
/* Client Characteristic Configuration descriptor Write Request */
if((tmpHandle == cy_ble_anssConfigPtr->attrInfo->charInfo[CY_BLE_ANS_NEW_ALERT].descrHandle[CY_BLE_ANS_CCCD]) ||
(tmpHandle == cy_ble_anssConfigPtr->attrInfo->charInfo[CY_BLE_ANS_UNREAD_ALERT_STATUS].descrHandle[CY_BLE_ANS_CCCD]))
{
/* Verify that optional notification property is enabled for characteristic */
if(CY_BLE_IS_NOTIFICATION_SUPPORTED(cy_ble_anssConfigPtr->attrInfo->charInfo[CY_BLE_ANS_NEW_ALERT].charHandle) ||
CY_BLE_IS_NOTIFICATION_SUPPORTED(cy_ble_anssConfigPtr->attrInfo->charInfo[CY_BLE_ANS_UNREAD_ALERT_STATUS].charHandle))
{
if(CY_BLE_IS_NOTIFICATION_ENABLED_IN_PTR(eventParam->handleValPair.value.val))
{
event = (uint32_t)CY_BLE_EVT_ANSS_NOTIFICATION_ENABLED;
}
else
{
event = (uint32_t)CY_BLE_EVT_ANSS_NOTIFICATION_DISABLED;
}
if(tmpHandle == cy_ble_anssConfigPtr->attrInfo->charInfo[CY_BLE_ANS_NEW_ALERT].descrHandle[CY_BLE_ANS_CCCD])
{
wrReqParam.charIndex = CY_BLE_ANS_NEW_ALERT;
}
else
{
wrReqParam.charIndex = CY_BLE_ANS_UNREAD_ALERT_STATUS;
}
/* Value is NULL for descriptors */
wrReqParam.value = NULL;
}
else
{
gattErr = CY_BLE_GATT_ERR_REQUEST_NOT_SUPPORTED;
}
}
else if(tmpHandle == cy_ble_anssConfigPtr->attrInfo->charInfo[CY_BLE_ANS_ALERT_NTF_CONTROL_POINT].charHandle)
{
/* Validate Command ID and Category ID ranges */
if((eventParam->handleValPair.value.val[0u] <= CY_BLE_ANS_IMM_UNREAD_ALERT_STATUS_NTF) &&
((eventParam->handleValPair.value.val[1u] <= CY_BLE_ANS_CAT_ID_INSTANT_MESSAGE) ||
(eventParam->handleValPair.value.val[1u] == CY_BLE_ANS_CAT_ID_ALL)))
{
wrReqParam.charIndex = CY_BLE_ANS_ALERT_NTF_CONTROL_POINT;
wrReqParam.value = &eventParam->handleValPair.value;
}
else /* Command ID or category ID received is invalid */
{
/* Erroneous request won't be notified to user but Error Response will be sent. */
cy_ble_eventHandlerFlag &= (uint8_t) ~CY_BLE_CALLBACK;
gattErr = CY_BLE_GATT_ERR_ANS_COMMAND_NOT_SUPPORTED;
}
}
else
{
/* Requested handle does not belong to alert notification service
* characteristic or descriptor. */
fFlag = 1u;
}
if((gattErr == CY_BLE_GATT_ERR_NONE) && (fFlag == 0u))
{
/* Write value to GATT database */
cy_stc_ble_gatts_db_attr_val_info_t dbAttrValInfo;
dbAttrValInfo.handleValuePair = eventParam->handleValPair;
dbAttrValInfo.connHandle = eventParam->connHandle;
dbAttrValInfo.offset = 0u;
dbAttrValInfo.flags = CY_BLE_GATT_DB_PEER_INITIATED;
gattErr = Cy_BLE_GATTS_WriteAttributeValueCCCD(&dbAttrValInfo);
if(gattErr == CY_BLE_GATT_ERR_NONE)
{
wrReqParam.connHandle = eventParam->connHandle;
cy_ble_eventHandlerFlag &= (uint8_t) ~CY_BLE_CALLBACK;
if(Cy_BLE_ANS_ApplCallback != NULL)
{
Cy_BLE_ANS_ApplCallback(event, &wrReqParam);
}
}
}
if(CY_BLE_GATT_ERR_NONE != gattErr)
{
/* Indicates that request was handled */
cy_ble_eventHandlerFlag &= (uint8_t) ~CY_BLE_CALLBACK;
}
return(gattErr);
}
/******************************************************************************
* Function Name: Cy_BLE_ANSS_SetCharacteristicValue
***************************************************************************//**
*
* Sets a characteristic value of alert notification service, which is a value
* identified by charIndex, to the local database.
*
* \param charIndex: The index of the service characteristic of type
* \ref cy_en_ble_ans_char_index_t. The valid values are,
* * #CY_BLE_ANS_SUPPORTED_NEW_ALERT_CAT
* * #CY_BLE_ANS_SUPPORTED_UNREAD_ALERT_CAT
* \param attrSize: The size of the characteristic value attribute.
* \param attrValue: The pointer to characteristic value data that should be
* stored in the GATT database.
*
* \return
* A return value of type \ref cy_en_ble_api_result_t.
*
* Error Codes | Description
* ------------ | -----------
* CY_BLE_SUCCESS | The request was handled successfully.
* CY_BLE_ERROR_INVALID_PARAMETER | Validation of the input parameter failed.
* CY_BLE_ERROR_GATT_DB_INVALID_ATTR_HANDLE| An optional characteristic is absent.
*
******************************************************************************/
cy_en_ble_api_result_t Cy_BLE_ANSS_SetCharacteristicValue(cy_en_ble_ans_char_index_t charIndex,
uint8_t attrSize,
uint8_t *attrValue)
{
cy_en_ble_api_result_t apiResult = CY_BLE_ERROR_INVALID_PARAMETER;
if(charIndex < CY_BLE_ANS_CHAR_COUNT)
{
cy_stc_ble_gatts_db_attr_val_info_t dbAttrValInfo;
dbAttrValInfo.connHandle.bdHandle = 0u;
dbAttrValInfo.connHandle.attId = 0u;
dbAttrValInfo.handleValuePair.attrHandle = cy_ble_anssConfigPtr->attrInfo->charInfo[charIndex].charHandle;
dbAttrValInfo.handleValuePair.value.len = attrSize;
dbAttrValInfo.handleValuePair.value.val = attrValue;
dbAttrValInfo.offset = 0u;
dbAttrValInfo.flags = CY_BLE_GATT_DB_LOCALLY_INITIATED;
/* Store data in database */
if(Cy_BLE_GATTS_WriteAttributeValueCCCD(&dbAttrValInfo) == CY_BLE_GATT_ERR_NONE)
{
apiResult = CY_BLE_SUCCESS;
}
}
return(apiResult);
}
/******************************************************************************
* Function Name: Cy_BLE_ANSS_GetCharacteristicValue
***************************************************************************//**
*
* Gets a characteristic value of alert notification service. The value is
* identified by charIndex.
*
* \param charIndex: The index of the service characteristic of
* type \ref cy_en_ble_ans_char_index_t. The valid values are,
* * #CY_BLE_ANS_NEW_ALERT
* * #CY_BLE_ANS_UNREAD_ALERT_STATUS
* \param attrSize: The size of the characteristic value attribute.
* \param attrValue: The pointer to the location where characteristic value data
* should be stored.
*
* \return
* A return value of type \ref cy_en_ble_api_result_t.
*
* Error Codes | Description
* ------------ | -----------
* CY_BLE_SUCCESS | The characteristic value was read successfully.
* CY_BLE_ERROR_INVALID_PARAMETER | Validation of the input parameter failed.
*
******************************************************************************/
cy_en_ble_api_result_t Cy_BLE_ANSS_GetCharacteristicValue(cy_en_ble_ans_char_index_t charIndex,
uint8_t attrSize,
uint8_t *attrValue)
{
cy_en_ble_api_result_t apiResult = CY_BLE_ERROR_INVALID_PARAMETER;
if(charIndex < CY_BLE_ANS_CHAR_COUNT)
{
cy_stc_ble_gatts_db_attr_val_info_t dbAttrValInfo;
dbAttrValInfo.connHandle.bdHandle = 0u;
dbAttrValInfo.connHandle.attId = 0u;
dbAttrValInfo.handleValuePair.attrHandle = cy_ble_anssConfigPtr->attrInfo->charInfo[charIndex].charHandle;
dbAttrValInfo.handleValuePair.value.len = attrSize;
dbAttrValInfo.handleValuePair.value.val = attrValue;
dbAttrValInfo.offset = 0u;
dbAttrValInfo.flags = CY_BLE_GATT_DB_LOCALLY_INITIATED;
/* Read characteristic value from database */
if(Cy_BLE_GATTS_ReadAttributeValueCCCD(&dbAttrValInfo) == CY_BLE_GATT_ERR_NONE)
{
apiResult = CY_BLE_SUCCESS;
}
}
return(apiResult);
}
/******************************************************************************
* Function Name: Cy_BLE_ANSS_GetCharacteristicDescriptor
***************************************************************************//**
*
* Gets a characteristic descriptor of the specified characteristic of alert
* notification service.
*
* \param connHandle: The connection handle
* \param charIndex: The index of the service characteristic of type
* \ref cy_en_ble_ans_char_index_t. The valid values are,
* * #CY_BLE_ANS_NEW_ALERT
* * #CY_BLE_ANS_UNREAD_ALERT_STATUS
* \param descrIndex: The index of the service characteristic descriptor of type
* \ref cy_en_ble_ans_descr_index_t. The valid value is,
* * #CY_BLE_ANS_CCCD
* \param attrSize: The size of the characteristic descriptor attribute.
* \param attrValue: The pointer to the location where characteristic
* descriptor value data should be stored.
* \return
* A return value of type \ref cy_en_ble_api_result_t.
*
* Error Codes | Description
* ------------ | -----------
* CY_BLE_SUCCESS | The characteristic descriptor value was read successfully.
* CY_BLE_ERROR_INVALID_PARAMETER | Validation of the input parameter failed.
*
******************************************************************************/
cy_en_ble_api_result_t Cy_BLE_ANSS_GetCharacteristicDescriptor(cy_stc_ble_conn_handle_t connHandle,
cy_en_ble_ans_char_index_t charIndex,
cy_en_ble_ans_descr_index_t descrIndex,
uint8_t attrSize,
uint8_t *attrValue)
{
cy_en_ble_api_result_t apiResult = CY_BLE_ERROR_INVALID_PARAMETER;
if(((charIndex == CY_BLE_ANS_NEW_ALERT) || (charIndex == CY_BLE_ANS_UNREAD_ALERT_STATUS)) &&
(descrIndex == CY_BLE_ANS_CCCD))
{
if(cy_ble_anssConfigPtr->attrInfo->charInfo[charIndex].descrHandle[descrIndex] != CY_BLE_GATT_INVALID_ATTR_HANDLE_VALUE)
{
cy_stc_ble_gatts_db_attr_val_info_t dbAttrValInfo;
dbAttrValInfo.handleValuePair.attrHandle = cy_ble_anssConfigPtr->attrInfo->charInfo[charIndex].descrHandle[descrIndex];
dbAttrValInfo.handleValuePair.value.len = attrSize;
dbAttrValInfo.handleValuePair.value.val = attrValue;
dbAttrValInfo.connHandle = connHandle;
dbAttrValInfo.offset = 0u;
dbAttrValInfo.flags = CY_BLE_GATT_DB_LOCALLY_INITIATED;
if(Cy_BLE_GATTS_ReadAttributeValueCCCD(&dbAttrValInfo) == CY_BLE_GATT_ERR_NONE)
{
apiResult = CY_BLE_SUCCESS;
}
}
}
return(apiResult);
}
/******************************************************************************
* Function Name: Cy_BLE_ANSS_SendNotification
***************************************************************************//**
*
* Sends a notification with the characteristic value, as specified by its
* charIndex, to the client device.
* On enabling notification successfully for a service characteristic it sends out a
* 'handle value notification', which results in #CY_BLE_EVT_ANSC_NOTIFICATION event
* at the GATT client's end.
*
* \param connHandle: The connection handle.
* \param charIndex: The index of the service characteristic of
* type \ref cy_en_ble_ans_char_index_t. The valid values are,
* * #CY_BLE_ANS_UNREAD_ALERT_STATUS
* * #CY_BLE_ANS_NEW_ALERT
* \param attrSize: The size of the characteristic value attribute.
* \param attrValue: The pointer to the characteristic value data that
* should be sent to the client device.
*
* \return
* A return value of type \ref cy_en_ble_api_result_t.
*
* Error Codes | Description
* ------------ | -----------
* CY_BLE_SUCCESS | The request was handled successfully.
* CY_BLE_ERROR_INVALID_PARAMETER | Validation of the input parameter failed.
* CY_BLE_ERROR_INVALID_OPERATION | Operation is invalid for this characteristic.
* CY_BLE_ERROR_GATT_DB_INVALID_ATTR_HANDLE | An optional characteristic is absent.
* CY_BLE_ERROR_INVALID_STATE | Connection with the client is not established.
* CY_BLE_ERROR_MEMORY_ALLOCATION_FAILED | Memory allocation failed.
* CY_BLE_ERROR_NTF_DISABLED | Notification is not enabled by the client.
*
******************************************************************************/
cy_en_ble_api_result_t Cy_BLE_ANSS_SendNotification(cy_stc_ble_conn_handle_t connHandle,
cy_en_ble_ans_char_index_t charIndex,
uint8_t attrSize,
uint8_t *attrValue)
{
cy_en_ble_api_result_t apiResult = CY_BLE_ERROR_INVALID_PARAMETER;
if((charIndex == CY_BLE_ANS_NEW_ALERT) || (charIndex == CY_BLE_ANS_UNREAD_ALERT_STATUS))
{
/* Send Notification if it is enabled and connected */
if(Cy_BLE_GetConnectionState(connHandle) < CY_BLE_CONN_STATE_CONNECTED)
{
apiResult = CY_BLE_ERROR_INVALID_STATE;
}
else if(!CY_BLE_IS_NOTIFICATION_ENABLED(connHandle.attId, cy_ble_anssConfigPtr->attrInfo->charInfo[charIndex].
descrHandle[CY_BLE_ANS_CCCD]))
{
apiResult = CY_BLE_ERROR_NTF_DISABLED;
}
else
{
/* Fill all fields of Write Request structure ... */
cy_stc_ble_gatts_handle_value_ntf_t ntfReqParam;
ntfReqParam.handleValPair.attrHandle = cy_ble_anssConfigPtr->attrInfo->charInfo[charIndex].charHandle;
ntfReqParam.handleValPair.value.val = attrValue;
ntfReqParam.handleValPair.value.len = attrSize;
ntfReqParam.connHandle = connHandle;
/* Send notification to client using previously filled structure */
apiResult = Cy_BLE_GATTS_Notification(&ntfReqParam);
}
}
return(apiResult);
}
/******************************************************************************
* Function Name: Cy_BLE_ANSC_DiscoverCharacteristicsEventHandler
***************************************************************************//**
*
* This function is called on receiving a #CY_BLE_EVT_GATTC_READ_BY_TYPE_RSP
* event. Based on the service UUID, an appropriate data structure is populated
* using the data received as part of the callback.
*
* \param discCharInfo: The pointer to a characteristic information structure.
*
******************************************************************************/
static void Cy_BLE_ANSC_DiscoverCharacteristicsEventHandler(cy_stc_ble_disc_char_info_t *discCharInfo)
{
/* ANS characteristics UUIDs */
static const cy_ble_uuid16_t cy_ble_anscCharUuid[CY_BLE_ANS_CHAR_COUNT] =
{
CY_BLE_UUID_CHAR_SPRTD_NEW_ALRT_CTGRY,
CY_BLE_UUID_CHAR_NEW_ALERT,
CY_BLE_UUID_CHAR_SPRT_UNRD_ALRT_CTGRY,
CY_BLE_UUID_CHAR_UNREAD_ALRT_STATUS,
CY_BLE_UUID_CHAR_ALERT_NTF_CONTROL_POINT
};
static cy_ble_gatt_db_attr_handle_t *lastEndHandle[CY_BLE_MAX_CONNECTION_INSTANCES] = { 0u };
uint32_t discIdx = Cy_BLE_GetDiscoveryIdx(discCharInfo->connHandle);
uint32_t ansDiscIdx = cy_ble_anscConfigPtr->serviceDiscIdx;
uint32_t i;
if((discCharInfo->uuidFormat == CY_BLE_GATT_16_BIT_UUID_FORMAT) &&
(cy_ble_configPtr->context->discovery[discIdx].servCount == ansDiscIdx))
{
/* Update last characteristic endHandle to declaration handle of this characteristic */
if(lastEndHandle[discIdx] != NULL)
{
*lastEndHandle[discIdx] = discCharInfo->charDeclHandle - 1u;
lastEndHandle[discIdx] = NULL;
}
for(i = (uint32_t)CY_BLE_ANS_SUPPORTED_NEW_ALERT_CAT; i < (uint32_t)CY_BLE_ANS_CHAR_COUNT; i++)
{
/* Get pointer (with offset) to ANS client structure with attribute handles */
cy_stc_ble_ansc_t *anscPtr = (cy_stc_ble_ansc_t *)&cy_ble_anscConfigPtr->attrInfo[discIdx];
if(cy_ble_anscCharUuid[i] == discCharInfo->uuid.uuid16)
{
if(anscPtr->characteristics[i].charInfo.valueHandle == CY_BLE_GATT_INVALID_ATTR_HANDLE_VALUE)
{
anscPtr->characteristics[i].charInfo.valueHandle = discCharInfo->valueHandle;
anscPtr->characteristics[i].charInfo.properties = discCharInfo->properties;
lastEndHandle[discIdx] = &anscPtr->characteristics[i].endHandle;
}
else
{
Cy_BLE_ApplCallback((uint32_t)CY_BLE_EVT_GATTC_CHAR_DUPLICATION, &discCharInfo);
}
}
}
/* Initialize the characteristic endHandle to the service endHandle. The characteristic endHandle will
* be updated to the declaration handle of the following characteristic, in the following characteristic
* discovery procedure. */
if(lastEndHandle[discIdx] != NULL)
{
uint32_t locServCount = cy_ble_configPtr->context->discovery[discIdx].servCount;
uint32_t discServiNum = cy_ble_configPtr->context->discServiCount;
*lastEndHandle[discIdx] =
cy_ble_configPtr->context->serverInfo[(discIdx * discServiNum) + locServCount].range.endHandle;
}
/* Indicate that request was handled */
cy_ble_eventHandlerFlag &= (uint8_t) ~CY_BLE_CALLBACK;
}
}
/******************************************************************************
* Function Name: Cy_BLE_ANSC_DiscoverCharDescriptorsEventHandler
***************************************************************************//**
*
* This function is called on receiving a #CY_BLE_EVT_GATTC_FIND_INFO_RSP event.
* This event is generated when a server successfully sends the data for
* #CY_BLE_GATT_FIND_INFO_REQ. Based on the service UUID, an appropriate data
* structure is populated to the service with a service callback.
*
* \param discDescrInfo: The pointer to descriptor information structure.
*
******************************************************************************/
static void Cy_BLE_ANSC_DiscoverCharDescriptorsEventHandler(cy_stc_ble_disc_descr_info_t * discDescrInfo)
{
uint32_t notSupportedDescr = 0u;
uint32_t discIdx = Cy_BLE_GetDiscoveryIdx(discDescrInfo->connHandle);
uint32_t ansDiscIdx = cy_ble_anscConfigPtr->serviceDiscIdx;
uint32_t descIdx;
if(cy_ble_configPtr->context->discovery[discIdx].servCount == ansDiscIdx)
{
switch(discDescrInfo->uuid.uuid16)
{
case CY_BLE_UUID_CHAR_CLIENT_CONFIG:
descIdx = (uint32_t)CY_BLE_ANS_CCCD;
break;
default:
/* Not supported descriptor */
notSupportedDescr = 1u;
break;
}
if(notSupportedDescr == 0u)
{
/* Get pointer (with offset) to ANS client structure with attribute handles */
cy_stc_ble_ansc_t *anscPtr = (cy_stc_ble_ansc_t *)&cy_ble_anscConfigPtr->attrInfo[discIdx];
if(anscPtr->characteristics[cy_ble_configPtr->context->discovery[discIdx].charCount].descriptors[descIdx] ==
CY_BLE_GATT_INVALID_ATTR_HANDLE_VALUE)
{
anscPtr->characteristics[cy_ble_configPtr->context->discovery[discIdx].charCount].descriptors[descIdx] =
discDescrInfo->descrHandle;
}
else
{
/* Duplication of the descriptor */
Cy_BLE_ApplCallback((uint32_t)CY_BLE_EVT_GATTC_DESCR_DUPLICATION, &discDescrInfo);
}
}
/* Indicates that request was handled */
cy_ble_eventHandlerFlag &= (uint8_t) ~CY_BLE_CALLBACK;
}
}
/******************************************************************************
* Function Name: Cy_BLE_ANSC_GetCharRange
***************************************************************************//**
*
* Returns a possible range of the current characteristic descriptor via
* input parameter charRangeInfo->range
*
* \param *charRangeInfo: The pointer to a descriptor range information structure.
*
******************************************************************************/
static void Cy_BLE_ANSC_GetCharRange(cy_stc_ble_disc_range_info_t *charRangeInfo)
{
uint32_t discIdx = Cy_BLE_GetDiscoveryIdx(charRangeInfo->connHandle);
uint32_t ansDiscIdx = cy_ble_anscConfigPtr->serviceDiscIdx;
uint32_t exitFlag = 0u;
if(cy_ble_configPtr->context->discovery[discIdx].servCount == ansDiscIdx)
{
if(charRangeInfo->srviIncIdx != CY_BLE_DISCOVERY_INIT)
{
cy_ble_configPtr->context->discovery[discIdx].charCount++;
}
while((cy_ble_configPtr->context->discovery[discIdx].charCount < (uint32_t)CY_BLE_ANS_CHAR_COUNT) && (exitFlag == 0u))
{
uint32_t charIdx = cy_ble_configPtr->context->discovery[discIdx].charCount;
/* Get pointer (with offset) to ANS client structure with attribute handles */
cy_stc_ble_ansc_t *anscPtr = (cy_stc_ble_ansc_t *)&cy_ble_anscConfigPtr->attrInfo[discIdx];
if((anscPtr->characteristics[charIdx].endHandle -
anscPtr->characteristics[charIdx].charInfo.valueHandle) != 0u)
{
/* Read characteristic range */
charRangeInfo->range.startHandle = anscPtr->characteristics[charIdx].charInfo.valueHandle + 1u;
charRangeInfo->range.endHandle = anscPtr->characteristics[charIdx].endHandle;
exitFlag = 1u;
}
else
{
cy_ble_configPtr->context->discovery[discIdx].charCount++;
}
}
/* Indicates that request was handled */
cy_ble_eventHandlerFlag &= (uint8_t) ~CY_BLE_CALLBACK;
}
}
/******************************************************************************
* Function Name: Cy_BLE_ANSC_NotificationEventHandler
***************************************************************************//**
*
* Handles Notification event for Alert Notification service.
*
* \param *eventParam: The pointer to a #cy_stc_ble_gattc_handle_value_ntf_param_t
* data structure specified by
* the event.
*
******************************************************************************/
static void Cy_BLE_ANSC_NotificationEventHandler(cy_stc_ble_gattc_handle_value_ntf_param_t *eventParam)
{
uint32_t discIdx = Cy_BLE_GetDiscoveryIdx(eventParam->connHandle);
if((discIdx < cy_ble_configPtr->params->maxClientCount) && (Cy_BLE_ANS_ApplCallback != NULL))
{
/* Get pointer (with offset) to ANS client structure with attribute handles */
cy_stc_ble_ansc_t *anscPtr = (cy_stc_ble_ansc_t *)&cy_ble_anscConfigPtr->attrInfo[discIdx];
if((anscPtr->characteristics[CY_BLE_ANS_NEW_ALERT].charInfo.valueHandle ==
eventParam->handleValPair.attrHandle) ||
(anscPtr->characteristics[CY_BLE_ANS_UNREAD_ALERT_STATUS].charInfo.valueHandle ==
eventParam->handleValPair.attrHandle))
{
cy_stc_ble_ans_char_value_t ntfParam;
ntfParam.charIndex = CY_BLE_ANS_NEW_ALERT;
ntfParam.connHandle = eventParam->connHandle;
ntfParam.value = &eventParam->handleValPair.value;
Cy_BLE_ANS_ApplCallback((uint32_t)CY_BLE_EVT_ANSC_NOTIFICATION, (void*)&ntfParam);
cy_ble_eventHandlerFlag &= (uint8_t) ~CY_BLE_CALLBACK;
}
}
}
/******************************************************************************
* Function Name: Cy_BLE_ANSC_ReadResponseEventHandler
***************************************************************************//**
*
* Handles Read Response event for Alert Notification service.
*
* \param eventParam: The pointer to the data that came with a read response for ANS.
*
******************************************************************************/
static void Cy_BLE_ANSC_ReadResponseEventHandler(cy_stc_ble_gattc_read_rsp_param_t *eventParam)
{
uint32_t fFlag = 1u;
uint32_t attrVal = 0u;
cy_en_ble_ans_char_index_t idx = CY_BLE_ANS_SUPPORTED_NEW_ALERT_CAT;
uint32_t discIdx = Cy_BLE_GetDiscoveryIdx(eventParam->connHandle);
if((discIdx < cy_ble_configPtr->params->maxClientCount) && (Cy_BLE_ANS_ApplCallback != NULL) &&
(cy_ble_anscReqHandle[discIdx] != CY_BLE_GATT_INVALID_ATTR_HANDLE_VALUE))
{
/* Get pointer (with offset) to ANS client structure with attribute handles */
cy_stc_ble_ansc_t *anscPtr = (cy_stc_ble_ansc_t *)&cy_ble_anscConfigPtr->attrInfo[discIdx];
if(anscPtr->characteristics[CY_BLE_ANS_SUPPORTED_NEW_ALERT_CAT].charInfo.valueHandle ==
cy_ble_anscReqHandle[discIdx])
{
idx = CY_BLE_ANS_SUPPORTED_NEW_ALERT_CAT;
}
else if(anscPtr->characteristics[CY_BLE_ANS_SUPPORTED_UNREAD_ALERT_CAT].charInfo.valueHandle ==
cy_ble_anscReqHandle[discIdx])
{
idx = CY_BLE_ANS_SUPPORTED_UNREAD_ALERT_CAT;
}
else if(anscPtr->characteristics[CY_BLE_ANS_NEW_ALERT].descriptors[CY_BLE_ANS_CCCD] ==
cy_ble_anscReqHandle[discIdx])
{
/* Attribute is characteristic descriptor */
attrVal = 1u;
idx = CY_BLE_ANS_NEW_ALERT;
}
else if(anscPtr->characteristics[CY_BLE_ANS_UNREAD_ALERT_STATUS].descriptors[CY_BLE_ANS_CCCD] ==
cy_ble_anscReqHandle[discIdx])
{
/* Attribute is characteristic descriptor */
attrVal = 1u;
idx = CY_BLE_ANS_UNREAD_ALERT_STATUS;
}
else
{
/* No ANS characteristic was requested for read */
fFlag = 0u;
}
if(fFlag != 0u)
{
/* Read response for characteristic */
if(attrVal == 0u)
{
/* Fill Alert Notification service read response parameter structure with characteristic info. */
cy_stc_ble_ans_char_value_t rdRspParam;
rdRspParam.connHandle = eventParam->connHandle;
rdRspParam.charIndex = idx;
rdRspParam.value = &eventParam->value;
rdRspParam.charIndex = idx;
Cy_BLE_ANS_ApplCallback((uint32_t)CY_BLE_EVT_ANSC_READ_CHAR_RESPONSE, (void*)&rdRspParam);
}
else /* Read response for characteristic descriptor */
{
/* Fill alert notification service read response parameter structure with characteristic descriptor
* info. */
cy_stc_ble_ans_descr_value_t rdRspParam;
rdRspParam.connHandle = eventParam->connHandle;
rdRspParam.charIndex = idx;
rdRspParam.descrIndex = CY_BLE_ANS_CCCD;
rdRspParam.value = &eventParam->value;
rdRspParam.charIndex = idx;
Cy_BLE_ANS_ApplCallback((uint32_t)CY_BLE_EVT_ANSC_READ_DESCR_RESPONSE, (void*)&rdRspParam);
}
cy_ble_eventHandlerFlag &= (uint8_t) ~CY_BLE_CALLBACK;
cy_ble_anscReqHandle[discIdx] = CY_BLE_GATT_INVALID_ATTR_HANDLE_VALUE;
}
}
}
/******************************************************************************
* Function Name: Cy_BLE_ANSC_WriteResponseEventHandler
***************************************************************************//**
*
* Handles Write Response event for Alert Notification service.
*
* \param eventParam: The pointer to the cy_stc_ble_conn_handle_t data structure.
*
******************************************************************************/
static void Cy_BLE_ANSC_WriteResponseEventHandler(const cy_stc_ble_conn_handle_t *eventParam)
{
uint32_t fFlag = 1u;
uint32_t attrVal = 0u;
cy_en_ble_ans_char_index_t idx = CY_BLE_ANS_SUPPORTED_NEW_ALERT_CAT;
uint32_t discIdx = Cy_BLE_GetDiscoveryIdx(*eventParam);
if((discIdx < cy_ble_configPtr->params->maxClientCount) && (Cy_BLE_ANS_ApplCallback != NULL) &&
(cy_ble_anscReqHandle[discIdx] != CY_BLE_GATT_INVALID_ATTR_HANDLE_VALUE))
{
cy_stc_ble_ans_char_value_t wrRspParam = { .connHandle = *eventParam };
/* Get pointer (with offset) to ANS client structure with attribute handles */
cy_stc_ble_ansc_t *anscPtr = (cy_stc_ble_ansc_t *)&cy_ble_anscConfigPtr->attrInfo[discIdx];
if(anscPtr->characteristics[CY_BLE_ANS_ALERT_NTF_CONTROL_POINT].charInfo.valueHandle ==
cy_ble_anscReqHandle[discIdx])
{
idx = CY_BLE_ANS_ALERT_NTF_CONTROL_POINT;
}
else if(anscPtr->characteristics[CY_BLE_ANS_NEW_ALERT].descriptors[CY_BLE_ANS_CCCD] ==
cy_ble_anscReqHandle[discIdx])
{
/* Attribute is characteristic descriptor */
attrVal = 1u;
idx = CY_BLE_ANS_NEW_ALERT;
}
else if(anscPtr->characteristics[CY_BLE_ANS_UNREAD_ALERT_STATUS].descriptors[CY_BLE_ANS_CCCD] ==
cy_ble_anscReqHandle[discIdx])
{
/* Attribute is characteristic descriptor */
attrVal = 1u;
idx = CY_BLE_ANS_UNREAD_ALERT_STATUS;
}
else
{
/* No ANS characteristic was requested for write */
fFlag = 0u;
}
if(fFlag != 0u)
{
/* Write Response for characteristic */
if(attrVal == 0u)
{
wrRspParam.charIndex = idx;
wrRspParam.value = NULL;
Cy_BLE_ANS_ApplCallback((uint32_t)CY_BLE_EVT_ANSC_WRITE_CHAR_RESPONSE, (void*)&wrRspParam);
}
else /* Write Response for characteristic descriptor */
{
/* Fill alert notification service Write Response parameter structure with
* characteristic descriptor info. */
cy_stc_ble_ans_descr_value_t wrDescRspParam;
wrDescRspParam.connHandle = *eventParam;
wrDescRspParam.charIndex = idx;
wrDescRspParam.descrIndex = CY_BLE_ANS_CCCD;
wrDescRspParam.value = NULL;
Cy_BLE_ANS_ApplCallback((uint32_t)CY_BLE_EVT_ANSC_WRITE_DESCR_RESPONSE, (void*)&wrDescRspParam);
}
cy_ble_eventHandlerFlag &= (uint8_t) ~CY_BLE_CALLBACK;
cy_ble_anscReqHandle[discIdx] = CY_BLE_GATT_INVALID_ATTR_HANDLE_VALUE;
}
}
}
/******************************************************************************
* Function Name: Cy_BLE_ANSC_ErrorResponseEventHandler
***************************************************************************//**
*
* Handles Error Response event for Alert Notification service.
*
* \param eventParam: The pointer to the cy_stc_ble_gatt_err_param_t structure.
*
******************************************************************************/
static void Cy_BLE_ANSC_ErrorResponseEventHandler(const cy_stc_ble_gatt_err_param_t *eventParam)
{
if(eventParam != NULL)
{
if(cy_ble_anscReqHandle[Cy_BLE_GetDiscoveryIdx(eventParam->connHandle)] == eventParam->errInfo.attrHandle)
{
cy_ble_anscReqHandle[Cy_BLE_GetDiscoveryIdx(eventParam->connHandle)] = CY_BLE_GATT_INVALID_ATTR_HANDLE_VALUE;
}
}
}
/******************************************************************************
* Function Name: Cy_BLE_ANSC_SetCharacteristicValue
***************************************************************************//**
*
* This function is used to write the characteristic (which is identified by
* charIndex) value attribute in the server. As a result, a Write Request is
* sent to the GATT server and on successful execution of the request on the
* server side, the #CY_BLE_EVT_ANSS_WRITE_CHAR event is generated.
* On successful request execution on the server side, the Write Response is
* sent to the client.
*
* \param connHandle: The connection handle.
* \param charIndex: The index of the service characteristic of
* type \ref cy_en_ble_ans_char_index_t. The valid values are,
* * #CY_BLE_ANS_UNREAD_ALERT_STATUS
* * #CY_BLE_ANS_NEW_ALERT
* \param attrSize: Size of the characteristic value attribute.
* \param attrValue: Pointer to the characteristic value data that should be
* sent to the server device.
* \return
* A return value of type \ref cy_en_ble_api_result_t.
*
* Error Codes | Description
* ------------ | -----------
* CY_BLE_SUCCESS | The request was sent successfully.
* CY_BLE_ERROR_INVALID_PARAMETER | Validation of the input parameter failed.
* CY_BLE_ERROR_INVALID_OPERATION | Operation is invalid for this characteristic.
* CY_BLE_ERROR_GATT_DB_INVALID_ATTR_HANDLE | The peer device doesn't have the particular characteristic.
* CY_BLE_ERROR_INVALID_STATE | Connection with the server is not established.
* CY_BLE_ERROR_MEMORY_ALLOCATION_FAILED | Memory allocation failed.
*
* \events
* In case of successful execution (return value = #CY_BLE_SUCCESS)
* the following events can appear: \n
* If the ANS service-specific callback is registered
* with \ref Cy_BLE_ANS_RegisterAttrCallback():
* * #CY_BLE_EVT_ANSC_WRITE_CHAR_RESPONSE - If the requested attribute is