请教CC2541修改char1，char2问题

Guohua zhang

在工程SimpleBLEPeripheral中，修改char1为notify&indicate，char2改为write，删除char3-5，用lightblue查看时，发现characteristic 2 user description后面出现9行FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF，这是什么原因呢？

想问一下，可以这样修改char1和char2吗？

10 年多前

0 Barbara Wu 10 年多前

TI__Genius 15636 points

请问是什么样的应用场景需要notification和indication要同时打开呢？

0 Guohua zhang 10 年多前回复 Barbara Wu

Intellectual 360 points

现有双模产品是同时打开notification和indication，在调试单模时没注意到就这样设置了，改成只有notify也是同样的情况

0 Barbara Wu 10 年多前回复 Guohua zhang

TI__Genius 15636 points

注意参考char4的配置，需要加一个config的值。

0 Guohua zhang 10 年多前回复 Barbara Wu

Intellectual 360 points

simpleGATTprofile.c文件

static gattCharCfg_t simpleProfileChar1Config[GATT_MAX_NUM_CONN];

static gattAttribute_t simpleProfileAttrTbl[SERVAPP_NUM_ATTR_SUPPORTED] =
{
...
// Characteristic 1 configuration
{
{ ATT_BT_UUID_SIZE, clientCharCfgUUID },
GATT_PERMIT_READ | GATT_PERMIT_WRITE,
0,
(uint8 *)simpleProfileChar1Config
},
...
}

bStatus_t SimpleProfile_AddService( uint32 services )
{
...
// Initialize Client Characteristic Configuration attributes
GATTServApp_InitCharCfg( INVALID_CONNHANDLE, simpleProfileChar1Config );
...
}

bStatus_t SimpleProfile_SetParameter( uint8 param, uint8 len, void *value )
{
bStatus_t ret = SUCCESS;
switch ( param )
{

case SIMPLEPROFILE_CHAR1:
if ( len == sizeof ( uint8 ) )
{
simpleProfileChar1 = *((uint8*)value);

// See if Notification has been enabled
GATTServApp_ProcessCharCfg( simpleProfileChar1Config, &simpleProfileChar1, FALSE,
simpleProfileAttrTbl, GATT_NUM_ATTRS( simpleProfileAttrTbl ),
INVALID_TASK_ID );
}
else
{
ret = bleInvalidRange;
}
break;
...
}

static void simpleProfile_HandleConnStatusCB( uint16 connHandle, uint8 changeType )
{
// Make sure this is not loopback connection
if ( connHandle != LOOPBACK_CONNHANDLE )
{
// Reset Client Char Config if connection has dropped
if ( ( changeType == LINKDB_STATUS_UPDATE_REMOVED ) ||
( ( changeType == LINKDB_STATUS_UPDATE_STATEFLAGS ) &&
( !linkDB_Up( connHandle ) ) ) )
{
GATTServApp_InitCharCfg( connHandle, simpleProfileChar1Config );
}
}
}

以上是关于char1，是参考char4来改的。char1与char2调换设置，lightblue查看char2还是出现9行UUID显示

Bluetooth

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请教CC2541修改char1，char2问题