Hi,
I used the SimpleLink Academy Bluetooth service generator to create a Bluetooth service with 1 characteristics with property read, write, notify and length 10. Using IOS LightBlue App I need to write 10 bytes for the callback to happen. If I write just 4 bytes the callback will not happen. How do I modify this that if I write only 1 byte the callback will happen?
/**********************************************************************************************
* Filename: testService.c
*
* Description: This file contains the implementation of the service.
*
* Copyright (c) 2015-2020, Texas Instruments Incorporated
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*************************************************************************************************/
/*********************************************************************
* INCLUDES
*/
#include <string.h>
#include <icall.h>
/* This Header file contains all BLE API and icall structure definition */
#include "icall_ble_api.h"
#include "testService.h"
/*********************************************************************
* MACROS
*/
/*********************************************************************
* CONSTANTS
*/
/*********************************************************************
* TYPEDEFS
*/
/*********************************************************************
* GLOBAL VARIABLES
*/
// testService Service UUID
CONST uint8_t testServiceUUID[ATT_UUID_SIZE] =
{
TI_BASE_UUID_128(TESTSERVICE_SERV_UUID)
};
// myTest1Char UUID
CONST uint8_t testService_MyTest1CharUUID[ATT_UUID_SIZE] =
{
TI_BASE_UUID_128(TESTSERVICE_MYTEST1CHAR_UUID)
};
/*********************************************************************
* LOCAL VARIABLES
*/
static testServiceCBs_t *pAppCBs = NULL;
/*********************************************************************
* Profile Attributes - variables
*/
// Service declaration
static CONST gattAttrType_t testServiceDecl = { ATT_UUID_SIZE, testServiceUUID };
// Characteristic "MyTest1Char" Properties (for declaration)
static uint8_t testService_MyTest1CharProps = GATT_PROP_READ | GATT_PROP_WRITE;
// Characteristic "MyTest1Char" Value variable
static uint8_t testService_MyTest1CharVal[TESTSERVICE_MYTEST1CHAR_LEN] = {0};
/*********************************************************************
* Profile Attributes - Table
*/
static gattAttribute_t testServiceAttrTbl[] =
{
// testService Service Declaration
{
{ ATT_BT_UUID_SIZE, primaryServiceUUID },
GATT_PERMIT_READ,
0,
(uint8_t *)&testServiceDecl
},
// MyTest1Char Characteristic Declaration
{
{ ATT_BT_UUID_SIZE, characterUUID },
GATT_PERMIT_READ,
0,
&testService_MyTest1CharProps
},
// MyTest1Char Characteristic Value
{
{ ATT_UUID_SIZE, testService_MyTest1CharUUID },
GATT_PERMIT_READ | GATT_PERMIT_WRITE,
0,
testService_MyTest1CharVal
},
};
/*********************************************************************
* LOCAL FUNCTIONS
*/
static bStatus_t testService_ReadAttrCB( uint16_t connHandle, gattAttribute_t *pAttr,
uint8_t *pValue, uint16_t *pLen, uint16_t offset,
uint16_t maxLen, uint8_t method );
static bStatus_t testService_WriteAttrCB( uint16_t connHandle, gattAttribute_t *pAttr,
uint8_t *pValue, uint16_t len, uint16_t offset,
uint8_t method );
/*********************************************************************
* PROFILE CALLBACKS
*/
// Simple Profile Service Callbacks
CONST gattServiceCBs_t testServiceCBs =
{
testService_ReadAttrCB, // Read callback function pointer
testService_WriteAttrCB, // Write callback function pointer
NULL // Authorization callback function pointer
};
/*********************************************************************
* PUBLIC FUNCTIONS
*/
/*
* TestService_AddService- Initializes the TestService service by registering
* GATT attributes with the GATT server.
*
*/
extern bStatus_t TestService_AddService( uint8_t rspTaskId )
{
uint8_t status;
// Register GATT attribute list and CBs with GATT Server App
status = GATTServApp_RegisterService( testServiceAttrTbl,
GATT_NUM_ATTRS( testServiceAttrTbl ),
GATT_MAX_ENCRYPT_KEY_SIZE,
&testServiceCBs );
return ( status );
}
/*
* TestService_RegisterAppCBs - Registers the application callback function.
* Only call this function once.
*
* appCallbacks - pointer to application callbacks.
*/
bStatus_t TestService_RegisterAppCBs( testServiceCBs_t *appCallbacks )
{
if ( appCallbacks )
{
pAppCBs = appCallbacks;
return ( SUCCESS );
}
else
{
return ( bleAlreadyInRequestedMode );
}
}
/*
* TestService_SetParameter - Set a TestService parameter.
*
* param - Profile parameter ID
* len - length of data to right
* value - pointer to data to write. This is dependent on
* the parameter ID and WILL be cast to the appropriate
* data type (example: data type of uint16 will be cast to
* uint16 pointer).
*/
bStatus_t TestService_SetParameter( uint8_t param, uint16_t len, void *value )
{
bStatus_t ret = SUCCESS;
switch ( param )
{
case TESTSERVICE_MYTEST1CHAR_ID:
if ( len == TESTSERVICE_MYTEST1CHAR_LEN )
{
memcpy(testService_MyTest1CharVal, value, len);
}
else
{
ret = bleInvalidRange;
}
break;
default:
ret = INVALIDPARAMETER;
break;
}
return ret;
}
/*
* TestService_GetParameter - Get a TestService parameter.
*
* param - Profile parameter ID
* value - pointer to data to write. This is dependent on
* the parameter ID and WILL be cast to the appropriate
* data type (example: data type of uint16 will be cast to
* uint16 pointer).
*/
bStatus_t TestService_GetParameter( uint8_t param, uint16_t *len, void *value )
{
bStatus_t ret = SUCCESS;
switch ( param )
{
case TESTSERVICE_MYTEST1CHAR_ID:
memcpy(value, testService_MyTest1CharVal, TESTSERVICE_MYTEST1CHAR_LEN);
break;
default:
ret = INVALIDPARAMETER;
break;
}
return ret;
}
/*********************************************************************
* @fn testService_ReadAttrCB
*
* @brief Read an attribute.
*
* @param connHandle - connection message was received on
* @param pAttr - pointer to attribute
* @param pValue - pointer to data to be read
* @param pLen - length of data to be read
* @param offset - offset of the first octet to be read
* @param maxLen - maximum length of data to be read
* @param method - type of read message
*
* @return SUCCESS, blePending or Failure
*/
static bStatus_t testService_ReadAttrCB( uint16_t connHandle, gattAttribute_t *pAttr,
uint8_t *pValue, uint16_t *pLen, uint16_t offset,
uint16_t maxLen, uint8_t method )
{
bStatus_t status = SUCCESS;
// See if request is regarding the MyTest1Char Characteristic Value
if ( ! memcmp(pAttr->type.uuid, testService_MyTest1CharUUID, pAttr->type.len) )
{
if ( offset > TESTSERVICE_MYTEST1CHAR_LEN ) // Prevent malicious ATT ReadBlob offsets.
{
status = ATT_ERR_INVALID_OFFSET;
}
else
{
*pLen = MIN(maxLen, TESTSERVICE_MYTEST1CHAR_LEN - offset); // Transmit as much as possible
memcpy(pValue, pAttr->pValue + offset, *pLen);
}
}
else
{
// If we get here, that means you've forgotten to add an if clause for a
// characteristic value attribute in the attribute table that has READ permissions.
*pLen = 0;
status = ATT_ERR_ATTR_NOT_FOUND;
}
return status;
}
/*********************************************************************
* @fn testService_WriteAttrCB
*
* @brief Validate attribute data prior to a write operation
*
* @param connHandle - connection message was received on
* @param pAttr - pointer to attribute
* @param pValue - pointer to data to be written
* @param len - length of data
* @param offset - offset of the first octet to be written
* @param method - type of write message
*
* @return SUCCESS, blePending or Failure
*/
static bStatus_t testService_WriteAttrCB( uint16_t connHandle, gattAttribute_t *pAttr,
uint8_t *pValue, uint16_t len, uint16_t offset,
uint8_t method )
{
bStatus_t status = SUCCESS;
uint8_t paramID = 0xFF;
// See if request is regarding a Client Characterisic Configuration
if ( ! memcmp(pAttr->type.uuid, clientCharCfgUUID, pAttr->type.len) )
{
// Allow only notifications.
status = GATTServApp_ProcessCCCWriteReq( connHandle, pAttr, pValue, len,
offset, GATT_CLIENT_CFG_NOTIFY);
}
// See if request is regarding the MyTest1Char Characteristic Value
else if ( ! memcmp(pAttr->type.uuid, testService_MyTest1CharUUID, pAttr->type.len) )
{
if ( offset + len > TESTSERVICE_MYTEST1CHAR_LEN )
{
status = ATT_ERR_INVALID_OFFSET;
}
else
{
// Copy pValue into the variable we point to from the attribute table.
memcpy(pAttr->pValue + offset, pValue, len);
// Only notify application if entire expected value is written
if ( offset + len == TESTSERVICE_MYTEST1CHAR_LEN)
paramID = TESTSERVICE_MYTEST1CHAR_ID;
}
}
else
{
// If we get here, that means you've forgotten to add an if clause for a
// characteristic value attribute in the attribute table that has WRITE permissions.
status = ATT_ERR_ATTR_NOT_FOUND;
}
// Let the application know something changed (if it did) by using the
// callback it registered earlier (if it did).
if (paramID != 0xFF)
if ( pAppCBs && pAppCBs->pfnChangeCb )
{
uint16_t svcUuid = TESTSERVICE_SERV_UUID;
pAppCBs->pfnChangeCb(connHandle, svcUuid, paramID, len, pValue); // Call app function from stack task context.
}
return status;
}
/**********************************************************************************************
* Filename: testService.h
*
* Description: This file contains the testService service definitions and
* prototypes.
*
* Copyright (c) 2015-2020, Texas Instruments Incorporated
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*************************************************************************************************/
#ifndef _TESTSERVICE_H_
#define _TESTSERVICE_H_
#ifdef __cplusplus
extern "C"
{
#endif
/*********************************************************************
* INCLUDES
*/
/*********************************************************************
* CONSTANTS
*/
// Service UUID
#define TESTSERVICE_SERV_UUID 0x1120
// Characteristic defines
#define TESTSERVICE_MYTEST1CHAR_ID 0
#define TESTSERVICE_MYTEST1CHAR_UUID 0x1121
#define TESTSERVICE_MYTEST1CHAR_LEN 10
/*********************************************************************
* TYPEDEFS
*/
/*********************************************************************
* MACROS
*/
/*********************************************************************
* Profile Callbacks
*/
// Callback when a characteristic value has changed
typedef void (*testServiceChange_t)(uint16_t connHandle, uint16_t svcUuid, uint8_t paramID, uint16_t len, uint8_t *pValue);
typedef struct
{
testServiceChange_t pfnChangeCb; // Called when characteristic value changes
testServiceChange_t pfnCfgChangeCb;
} testServiceCBs_t;
/*********************************************************************
* API FUNCTIONS
*/
/*
* TestService_AddService- Initializes the TestService service by registering
* GATT attributes with the GATT server.
*
*/
extern bStatus_t TestService_AddService( uint8_t rspTaskId);
/*
* TestService_RegisterAppCBs - Registers the application callback function.
* Only call this function once.
*
* appCallbacks - pointer to application callbacks.
*/
extern bStatus_t TestService_RegisterAppCBs( testServiceCBs_t *appCallbacks );
/*
* TestService_SetParameter - Set a TestService parameter.
*
* param - Profile parameter ID
* len - length of data to right
* value - pointer to data to write. This is dependent on
* the parameter ID and WILL be cast to the appropriate
* data type (example: data type of uint16 will be cast to
* uint16 pointer).
*/
extern bStatus_t TestService_SetParameter(uint8_t param, uint16_t len, void *value);
/*
* TestService_GetParameter - Get a TestService parameter.
*
* param - Profile parameter ID
* value - pointer to data to write. This is dependent on
* the parameter ID and WILL be cast to the appropriate
* data type (example: data type of uint16 will be cast to
* uint16 pointer).
*/
extern bStatus_t TestService_GetParameter(uint8_t param, uint16_t *len, void *value);
/*********************************************************************
*********************************************************************/
#ifdef __cplusplus
}
#endif
#endif /* _TESTSERVICE_H_ */
-kel
