关于通过UUID去获取handle

协议栈里的例程都是通过SIMPLEPROFILE_CHAR1_UUID去获得handle

req.type.uuid[0] = LO_UINT16(SIMPLEPROFILE_CHAR1_UUID);

req.type.uuid[1] = HI_UINT16(SIMPLEPROFILE_CHAR1_UUID);

为什么通过SIMPLEPROFILE_CHAR4_UUID去获取handle会失败，我的从机SIMPLEPROFILE_CHAR4_UUID是Notify，还请大神告知.

通过SIMPLEPROFILE_CHAR2_UUID也是可以获得handle的，是不是notify对应的UUID要特殊处理才能获取handle？

目前测试下来通过，CHAR3，CHAR4，CHAR5，均无法获取handle，是不是从机那边需要进行设置？

有点不明白您的意思，您这边是主机？获取handle的代码是？

就是Ti的主机例子啊，

static void SimpleBLECentral_processGATTDiscEvent(gattMsgEvent_t *pMsg)
{
if (pMsg->method == ATT_MTU_UPDATED_EVENT)
{
// MTU size updated
LCD_WRITE_STRING_VALUE("MTU Size:", pMsg->msg.mtuEvt.MTU, 10, LCD_PAGE4);
}
else if (discState == BLE_DISC_STATE_MTU)
{
// MTU size response received, discover simple BLE service
if (pMsg->method == ATT_EXCHANGE_MTU_RSP)
{
uint8_t uuid[ATT_BT_UUID_SIZE] = { LO_UINT16(SIMPLEPROFILE_SERV_UUID),
HI_UINT16(SIMPLEPROFILE_SERV_UUID) };

// Just in case we're using the default MTU size (23 octets)
LCD_WRITE_STRING_VALUE("MTU Size:", ATT_MTU_SIZE, 10, LCD_PAGE4);

discState = BLE_DISC_STATE_SVC;

// Discovery simple BLE service
VOID GATT_DiscPrimaryServiceByUUID(connHandle[connHandleIdx], uuid, ATT_BT_UUID_SIZE,
selfEntity);
}
}
else if (discState == BLE_DISC_STATE_SVC)
{
// Service found, store handles
if (pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP &&
pMsg->msg.findByTypeValueRsp.numInfo > 0)
{
svcStartHdl = ATT_ATTR_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo, 0);
svcEndHdl = ATT_GRP_END_HANDLE(pMsg->msg.findByTypeValueRsp.pHandlesInfo, 0);
}

// If procedure complete
if (((pMsg->method == ATT_FIND_BY_TYPE_VALUE_RSP) &&
(pMsg->hdr.status == bleProcedureComplete)) ||
(pMsg->method == ATT_ERROR_RSP))
{
if (svcStartHdl != 0)
{
attReadByTypeReq_t req;

// Discover characteristic
discState = BLE_DISC_STATE_CHAR;

req.startHandle = svcStartHdl;
req.endHandle = svcEndHdl;
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);

VOID GATT_ReadUsingCharUUID(connHandle[connHandleIdx], &req, selfEntity);
}
}
}
else if (discState == BLE_DISC_STATE_CHAR)
{
// Characteristic found, store handle
if ((pMsg->method == ATT_READ_BY_TYPE_RSP) &&
(pMsg->msg.readByTypeRsp.numPairs > 0))
{
charHdl[connHandleIdx] = BUILD_UINT16(pMsg->msg.readByTypeRsp.pDataList[0],
pMsg->msg.readByTypeRsp.pDataList[1]);
print_string("Simple Svc Found\r\n");
LCD_WRITE_STRING("Simple Svc Found", LCD_PAGE2);
procedureInProgress = FALSE;
}

discState = BLE_DISC_STATE_IDLE;
}
}

你好，请问你的问题解决了么？我在修改主机例程时也遇到了同样的问题。

另外，我修改了CHAR1的特征值大小为20个字节，在主机读取CHAR1的特征值的时候发现只有第一个字符是对的（从机广播的CHAR1也相应修改了），请问这是什么原因？