The following steps show you how to add write capability to Characteristics 5 in TI CC26xx BLE simple_peripheral example. In simple_gatt_profile.c
1. Revise "static uint8 simpleProfileChar5Props = GATT_PROP_READ;" to "static uint8 simpleProfileChar5Props = GATT_PROP_READ | GATT_PROP_WRITE;"
2. Revise the following code in simpleProfileAttrTbl
// Characteristic Value 5
{
{ ATT_BT_UUID_SIZE, simpleProfilechar5UUID },
GATT_PERMIT_AUTHEN_READ,
0,
simpleProfileChar5
},
to
// Characteristic Value 5
{
{ ATT_BT_UUID_SIZE, simpleProfilechar5UUID },
GATT_PERMIT_AUTHEN_READ | GATT_PERMIT_WRITE,
0,
simpleProfileChar5
},
3. Add the following code into simpleProfile_WriteAttrCB
case SIMPLEPROFILE_CHAR5_UUID:
//Validate the value
// Make sure it's not a blob oper
if ( offset == 0 )
{
if ( len > SIMPLEPROFILE_CHAR5_LEN )
{
status = ATT_ERR_INVALID_VALUE_SIZE;
}
}
else
{
status = ATT_ERR_ATTR_NOT_LONG;
}
//Write the value
if ( status == SUCCESS )
{
uint8 *pCurValue = (uint8 *)pAttr->pValue;
memcpy(pCurValue,pValue,len);
if( pAttr->pValue == &simpleProfileChar5 )
{
notifyApp = SIMPLEPROFILE_CHAR5;
}
}
break;
Build the project and you can use TI SimpleLink Starter App or LightBlue App to test Characteristics 5 with write capability.
