请问ATT_WriteCharValue如何写多个字节的数据？

#define ATT_ERR_INVALID_VALUE_SIZE       0x0d //!< The attribute value length is invalid for the operation
另外可以参考之前的帖子 http://www.deyisupport.com/question_answer/wireless_connectivity/bluetooth/f/103/t/44889.aspx?pi2132219853=1

uint8 buffer[VSERIAL_BLOCK_SIZE];
attWriteReq_t req = [NULL];
req.handle = charHandle;
req.len = VSERIAL_BLOCK_SIZE;
req.cmd = 1;
if(enableAES == TRUE)
[
AES_Init(curDevice->aesKey);
AES_Encrypt(buffer, pValue);
osal_memcpy(&req.value, buffer, AES_BLOCK_SIZE);
]
else
[
osal_memcpy(&req.value, pValue, AES_BLOCK_SIZE);
]

return ( GATT_WriteNoRsp( conHandle, &req ) );

其中charHandle是特征值的handle，conHandle是连接的handle，aes加密是可选，我自己实现的。

看下一楼

这个问题解决了，原来是要修改simpleGATTprofile.c中的simpleProfile_WriteAttrCB函数，这里面规定了特征值字节数为1
if ( len != 1 )
[
status = ATT_ERR_INVALID_VALUE_SIZE;
]
但是又出现了新的问题，写5个字节内的数据都没问题，但写6个字节以上的数据就直接Discconected，原因是0x08
#define LL_STATUS_ERROR_CONNECTION_TIMEOUT             0x08 // Connection Timeou
这是为什么？什么地方规定了只能5字节，不是最大为20字节吗？
#define ATT_MTU_SIZE                     L2CAP_MTU_SIZE
#define L2CAP_MTU_SIZE                   23
typedef struct
[
uint16 handle; //!< Handle of the attribute to be written (must be first field)
uint8 len; //!< Length of value
uint8 value[ATT_MTU_SIZE-3]; //!< Value of the attribute to be written
uint8 sig; //!< Authentication Signature status (not included (0), valid (1), invalid (2))
uint8 cmd; //!< Command Flag
] attWriteReq_t;
typedef struct
[
uint8 len; //!< Length of value
uint8 value[ATT_MTU_SIZE-1]; //!< Value of the attribute with the handle given
] attReadRsp_t;
typedef struct
[
uint16 handle; //!< Handle of the attribute to be written (must be first field)
uint16 offset; //!< Offset of the first octet to be written
uint8 len; //!< Length of value
uint8 value[ATT_MTU_SIZE-5]; //!< Part of the value of the attribute to be written
] attPrepareWriteReq_t;
第二个问题，这三个飘红的地方为什么规定的长度不一样？


恳请TI的工程师和高手来帮帮我！！！！谢谢

写多个字节要修改simpleProfileChangeCB函数。