主机用GATT_WriteCharValue向从机发送数据返回错误

shengzhang,
你的GATT_WriteCharValue的参数是怎么填的呢？特别是attWriteReq_t 结构里面的内容。

谢谢您的回答！
我是这样写的：
vdid CentralSendToPeripheral(uint16 ConnHandle, uint16 handle, uint8*p, uint8 len )
[
arrWriteReq_t   req;
req.handle = handle;
req.len = len;
req.sig = 0;
req.cmd = 0;
osal_memcpy(req.val, p, len);
(void)GATT_WriteCharValue(ConnHandle,&req,serial_TaskID);
]
请问这有什么问题？

下面的例子是获取CHAR1的handle的，请问我要获取CHAR2的handle应该怎么改？我更改req.type.uuid[0] = LO_UINT16(SIMPLEPROFILE_CHAR2_UUID);
req.type.uuid[1] = HI_UINT16(SIMPLEPROFILE_CHAR2_UUID);后为什么获取不了？请问还有什么地方需要更改的？谢谢！
static void simpleBLEGATTDiscoveryEvent( gattMsgEvent_t *pMsg )
[
attReadByTypeReq_t req;

if ( simpleBLEDiscState == BLE_DISC_STATE_SVC )
[
// Service found, store handles
if ( pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->msg.findByTypeValueRsp.numInfo > 0 )
[
simpleBLESvcStartHdl = pMsg->msg.findByTypeValueRsp.handlesInfo[0].handle;
simpleBLESvcEndHdl = pMsg->msg.findByTypeValueRsp.handlesInfo[0].grpEndHandle;
]

// If procedure complete
if ( ( pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->hdr.status == bleProcedureComplete ) ||
( pMsg->method == ATT_ERROR_RSP ) )
[
if ( simpleBLESvcStartHdl != 0 )
[
// Discover characteristic
simpleBLEDiscState = BLE_DISC_STATE_CHAR;

req.startHandle = simpleBLESvcStartHdl;
req.endHandle = simpleBLESvcEndHdl;
req.type.len = ATT_BT_UUID_SIZE;
req.type.uuid[0] = LO_UINT16(SIMPLEPROFILE_CHAR1_UUID);
req.type.uuid[1] = HI_UINT16(SIMPLEPROFILE_CHAR1_UUID);
GATT_ReadUsingCharUUID( simpleBLEConnHandle, &req, simpleBLETaskId );
]
]
]
else if ( simpleBLEDiscState == BLE_DISC_STATE_CHAR )
[
// Characteristic found, store handle
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;

]
]