TI中文支持网我把center和peripheral的GATTProfile文件修改成char1能发送20个字节，错误，查找不到特征值。
if ( pMsg->method == ATT_READ_BY_TYPE_RSP &&pMsg->msg.readByTypeRsp.numPairs > 0 ) {simpleBLECharHdl = BUILD_UINT16( pMsg->msg.readByTypeRsp.dataList[0],pMsg->msg.readByTypeRsp.dataList[1] );LCD_WRITE_STRING( "Simple Svc Found", HAL_LCD_LINE_1 );simpleBLEProcedureInProgress = FALSE;simpleBLEDiscState = BLE_DISC_STATE_IDLE;
}
不能进入到上述函数，LCD一直没有显示"Simple Svc Found"。
我修改的代码为：
simpleGATTprofile.h
// Profile Parameters #define SIMPLEPROFILE_CHAR1 0 // RW uint8 - Profile Characteristic 1 value #define SIMPLEPROFILE_CHAR2 1 // RW uint8 - Profile Characteristic 2 value // Simple Profile Service UUID #define SIMPLEPROFILE_SERV_UUID 0xFFF0 // Key Pressed UUID #define SIMPLEPROFILE_CHAR1_UUID 0xFFF1 #define SIMPLEPROFILE_CHAR2_UUID 0xFFF2 // Simple Keys Profile Services bit fields #define SIMPLEPROFILE_SERVICE 0x00000001 #define SIMPLEPROFILE_CHAR1_LEN 20
simpleGATTprofile.c
/*********************************************************************
* @fnSimpleProfile_SetParameter
*
* @briefSet a Simple Profile parameter.
*
* @paramparam - Profile parameter ID
* @paramlen - length of data to right
* @paramvalue - 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).
*
* @return bStatus_t
*/
bStatus_t SimpleProfile_SetParameter( uint8 param, uint8 len, void *value )
{bStatus_t ret = SUCCESS;switch ( param ){case SIMPLEPROFILE_CHAR1:if ( len <= SIMPLEPROFILE_CHAR1_LEN ){VOID osal_memcpy( simpleProfileChar1, value, len );}else{ret = bleInvalidRange;}break;case SIMPLEPROFILE_CHAR2:if ( len == sizeof ( uint8 ) ){simpleProfileChar2 = *((uint8*)value);// See if Notification has been enabledGATTServApp_ProcessCharCfg( simpleProfileChar2Config, &simpleProfileChar2, FALSE,simpleProfileAttrTbl, GATT_NUM_ATTRS( simpleProfileAttrTbl ),INVALID_TASK_ID );}else{ret = bleInvalidRange;}break;default:ret = INVALIDPARAMETER;break;}return ( ret );
}
/*********************************************************************
* @fnSimpleProfile_GetParameter
*
* @briefGet a Simple Profile parameter.
*
* @paramparam - Profile parameter ID
* @paramvalue - pointer to data to put. 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).
*
* @return bStatus_t
*/
bStatus_t SimpleProfile_GetParameter( uint8 param, void *value )
{bStatus_t ret = SUCCESS;switch ( param ){case SIMPLEPROFILE_CHAR1:VOID osal_memcpy( value, simpleProfileChar1, SIMPLEPROFILE_CHAR1_LEN ); //simpleProfileChar1 是数组名break;case SIMPLEPROFILE_CHAR2:*((uint8*)value) = simpleProfileChar2;break;default:ret = INVALIDPARAMETER;break;}return ( ret );
}
/*********************************************************************
* @fnsimpleProfile_ReadAttrCB
*
* @briefRead an attribute.
*
* @paramconnHandle - connection message was received on
* @parampAttr - pointer to attribute
* @parampValue - pointer to data to be read
* @parampLen - length of data to be read
* @paramoffset - offset of the first octet to be read
* @parammaxLen - maximum length of data to be read
*
* @returnSuccess or Failure
*/
static uint8 simpleProfile_ReadAttrCB( uint16 connHandle, gattAttribute_t *pAttr,uint8 *pValue, uint8 *pLen, uint16 offset, uint8 maxLen )
{bStatus_t status = SUCCESS;// If attribute permissions require authorization to read, return errorif ( gattPermitAuthorRead( pAttr->permissions ) ){// Insufficient authorizationreturn ( ATT_ERR_INSUFFICIENT_AUTHOR );}// Make sure it's not a blob operation (no attributes in the profile are long)if ( offset > 0 ){return ( ATT_ERR_ATTR_NOT_LONG );}if ( pAttr->type.len == ATT_BT_UUID_SIZE ){// 16-bit UUIDuint16 uuid = BUILD_UINT16( pAttr->type.uuid[0], pAttr->type.uuid[1]);switch ( uuid ){case SIMPLEPROFILE_CHAR1_UUID:*pLen = SIMPLEPROFILE_CHAR1_LEN;VOID osal_memcpy( pValue, pAttr->pValue, SIMPLEPROFILE_CHAR1_LEN );break;case SIMPLEPROFILE_CHAR2_UUID:*pLen = 1;pValue[0] = *pAttr->pValue;break;default:// Should never get here! (characteristics 3 and 4 do not have read permissions)*pLen = 0;status = ATT_ERR_ATTR_NOT_FOUND;break;}}else{// 128-bit UUID*pLen = 0;status = ATT_ERR_INVALID_HANDLE;}return ( status );
}
/*********************************************************************
* @fnsimpleProfile_WriteAttrCB
*
* @briefValidate attribute data prior to a write operation
*
* @paramconnHandle - connection message was received on
* @parampAttr - pointer to attribute
* @parampValue - pointer to data to be written
* @paramlen - length of data
* @paramoffset - offset of the first octet to be written
* @paramcomplete - whether this is the last packet
* @paramoper - whether to validate and/or write attribute value
*
* @return Success or Failure
*/
static bStatus_t simpleProfile_WriteAttrCB( uint16 connHandle, gattAttribute_t *pAttr,uint8 *pValue, uint8 len, uint16 offset )
{bStatus_t status = SUCCESS;uint8 notifyApp = 0xFF;// If attribute permissions require authorization to write, return errorif ( gattPermitAuthorWrite( pAttr->permissions ) ){// Insufficient authorizationreturn ( ATT_ERR_INSUFFICIENT_AUTHOR );}if ( pAttr->type.len == ATT_BT_UUID_SIZE ){// 16-bit UUIDuint16 uuid = BUILD_UINT16( pAttr->type.uuid[0], pAttr->type.uuid[1]);switch ( uuid ){case SIMPLEPROFILE_CHAR1_UUID://Validate the value// Make sure it's not a blob operif ( offset == 0 ){if ( len > SIMPLEPROFILE_CHAR1_LEN ){status = ATT_ERR_INVALID_VALUE_SIZE;}}else{status = ATT_ERR_ATTR_NOT_LONG;}//Write the valueif ( status == SUCCESS ){
//uint8 *pCurValue = (uint8 *)pAttr->pValue;
//osal_memset(pCurValue,0,SIMPLEPROFILE_CHAR1_LEN);
//VOID osal_memcpy( pCurValue, pValue, len );uint8 i = 0;uint8 *pCurValue = (uint8 *)pAttr->pValue;for ( i = 0; i<len; i++) {*pCurValue = pValue[i];pCurValue++;};if(len < SIMPLEPROFILE_CHAR1_LEN) {for (; i<SIMPLEPROFILE_CHAR1_LEN; i++) {*pCurValue = 0;*pCurValue ++;}}notifyApp = SIMPLEPROFILE_CHAR1;}break;case GATT_CLIENT_CHAR_CFG_UUID:status = GATTServApp_ProcessCCCWriteReq( connHandle, pAttr, pValue, len,offset, GATT_CLIENT_CFG_NOTIFY );break;default:// Should never get here! (characteristics 2 and 4 do not have write permissions)status = ATT_ERR_ATTR_NOT_FOUND;break;}}else{// 128-bit UUIDstatus = ATT_ERR_INVALID_HANDLE;}// If a charactersitic value changed then callback function to notify application of changeif ( (notifyApp != 0xFF ) && simpleProfile_AppCBs && simpleProfile_AppCBs->pfnSimpleProfileChange ){simpleProfile_AppCBs->pfnSimpleProfileChange( notifyApp ); //调用回调函数 simpleProfileChangeCB()}return ( status );
}
具体的两个文件就修改成这样，好奇怪就是不行。后开我修改了simpleProfile_ReadAttrCB函数的：
case SIMPLEPROFILE_CHAR1_UUID:*pLen = SIMPLEPROFILE_CHAR1_LEN;VOID osal_memcpy( pValue, pAttr->pValue, SIMPLEPROFILE_CHAR1_LEN );break;
改成：
case SIMPLEPROFILE_CHAR1_UUID:*pLen = 16;VOID osal_memcpy( pValue, pAttr->pValue, SIMPLEPROFILE_CHAR1_LEN );break;
这样就可以了。但只是16个字节。
da qin zheng sheng：
用仿真器设置断点调试一下吧。或者用抓包软件看一下。
Jiaming Li：
回复 da qin zheng sheng:
看过了，GATT_ReadUsingCharUUID后，下面的pMsg->method == ATT_READ_BY_TYPE_RSP一直不成立。然后抓包发现char1 的句柄为0x25，然后用这个来发数据就能发了。
但是我把长度修改为1到19个，都可以发现句柄的，pMsg->method == ATT_READ_BY_TYPE_RSP是成立的。但是长度为20就不行了。好奇怪。
你有相关的例程的话，可以发给我参考下。
yinwei Li：
回复 Jiaming Li:
HI,Jiaming Li
请问是否已经解决？求指教
