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BLE
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Use CyBle_GattsWriteAttributeValue API.
Here's an extract from the source code comments:
/******************************************************************************
##Function Name: CyBle_GattsWriteAttributeValue
*******************************************************************************
Summary:
This function is used to write to the value field of the specified attribute
in the GATT database of a GATT Server. This is a blocking function. No event
is generated on calling this function.
If a peer device connected to the GATT Server initiates a write operation,
this function is executed on the GATT Server. During such a call, the function
checks for the attribute permissions (flags) before executing the write
operation.
Parameters:
handleValuePair: Pointer to handle value pair of type
CYBLE_GATT_HANDLE_VALUE_PAIR_T.
* 'handleValuePair.attrHandle' is an input for which value
has to be written.
* 'handleValuePair.value.len' is an input parameter for the
length to be written.
* 'handleValuePair.value.val' is an input parameter for
data buffer.
* 'handleValuePair.actualLen' has to be ignored as it is
unused in this function.
offset: Offset at which the data (length in number of bytes) is written.
connHandle: Pointer to the attribute instance handle, of type
CYBLE_CONN_HANDLE_T.
falgs: Attribute permissions. Allowed values are,
* CYBLE_GATT_DB_LOCALLY_INITIATED
* CYBLE_GATT_DB_PEER_INITIATED
Return:
CYBLE_GATT_ERR_CODE_T : Return value indicates if the function succeeded or
failed. Following are the possible error codes.
<table>
Errors codes Description
------------ -----------
CYBLE_GATT_ERR_NONE On successful operation
CYBLE_GATT_ERR_INVALID_HANDLE 'handleValuePair.attrHandle'
is not valid
CYBLE_GATT_ERR_WRITE_NOT_PERMITTED Write operation is not
permitted on this attribute
CYBLE_GATT_ERR_INVALID_OFFSET Offset value is invalid
CYBLE_GATT_ERR_UNLIKELY_ERROR Some other error occurred
</table>
******************************************************************************/
CYBLE_GATT_ERR_CODE_T CyBle_GattsWriteAttributeValue
(
CYBLE_GATT_HANDLE_VALUE_PAIR_T * handleValuePair,
uint16 offset,
CYBLE_CONN_HANDLE_T * connHandle,
uint8 flags
);
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Use CyBle_GattsWriteAttributeValue API.
Here's an extract from the source code comments:
/******************************************************************************
##Function Name: CyBle_GattsWriteAttributeValue
*******************************************************************************
Summary:
This function is used to write to the value field of the specified attribute
in the GATT database of a GATT Server. This is a blocking function. No event
is generated on calling this function.
If a peer device connected to the GATT Server initiates a write operation,
this function is executed on the GATT Server. During such a call, the function
checks for the attribute permissions (flags) before executing the write
operation.
Parameters:
handleValuePair: Pointer to handle value pair of type
CYBLE_GATT_HANDLE_VALUE_PAIR_T.
* 'handleValuePair.attrHandle' is an input for which value
has to be written.
* 'handleValuePair.value.len' is an input parameter for the
length to be written.
* 'handleValuePair.value.val' is an input parameter for
data buffer.
* 'handleValuePair.actualLen' has to be ignored as it is
unused in this function.
offset: Offset at which the data (length in number of bytes) is written.
connHandle: Pointer to the attribute instance handle, of type
CYBLE_CONN_HANDLE_T.
falgs: Attribute permissions. Allowed values are,
* CYBLE_GATT_DB_LOCALLY_INITIATED
* CYBLE_GATT_DB_PEER_INITIATED
Return:
CYBLE_GATT_ERR_CODE_T : Return value indicates if the function succeeded or
failed. Following are the possible error codes.
<table>
Errors codes Description
------------ -----------
CYBLE_GATT_ERR_NONE On successful operation
CYBLE_GATT_ERR_INVALID_HANDLE 'handleValuePair.attrHandle'
is not valid
CYBLE_GATT_ERR_WRITE_NOT_PERMITTED Write operation is not
permitted on this attribute
CYBLE_GATT_ERR_INVALID_OFFSET Offset value is invalid
CYBLE_GATT_ERR_UNLIKELY_ERROR Some other error occurred
</table>
******************************************************************************/
CYBLE_GATT_ERR_CODE_T CyBle_GattsWriteAttributeValue
(
CYBLE_GATT_HANDLE_VALUE_PAIR_T * handleValuePair,
uint16 offset,
CYBLE_CONN_HANDLE_T * connHandle,
uint8 flags
);
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