When discovering services using nrf51-ble-driver_win_0.4.1 driver, some ID are received with type BLE_UUID_TYPE_UNKNOWN. So I assume they are 128bits. I then retrieve the 128bits value (using sd_ble_gattc_read) and then register it using sd_ble_uuid_vs_add. This works fine and retrieve no error.
Later, I try to retrieve the 128bits uuid from 16bits using sd_ble_uuid_encode. This returns no error but did nothing.
Here is the code:
uint32_t Convert128To16BitsUUID( ble_uuid128_t uuid128,
ble_uuid_t& result )
{
uint8_t p_type;
//add the uuid to the base
uint32_t err_code = sd_ble_uuid_vs_add( &uuid128, &p_type );
if (err_code == NRF_SUCCESS)
{
uint16_t smalluuid;
smalluuid = *((uint16_t*) (uuid128.uuid128 + 12));
BLE_UUID_BLE_ASSIGN(result, smalluuid);
result.type = p_type;
}
return err_code;
}
void Fix128BitsUUID( const NRF51::PrivateDataRemoteDevice& device,
ble_uuid_t& uuid,
uint16_t handle )
{
if ( uuid.type == BLE_UUID_TYPE_UNKNOWN && uuid.uuid == 0 )
{
uint8_t* value = NULL;
uint16_t len = 0;
if ( doReadValue( device, handle, value, len ).empty() )
{
if ( len == sizeof(ble_uuid128_t) )
{
// Mask 16-bit UUID part to zeros.
//value[12] = 0x00;
//value[13] = 0x00;
ble_uuid128_t uuid128;
// Copy gathered 128bit UUID as future base.
memcpy(uuid128.uuid128, value, sizeof(ble_uuid128_t));
if ( Convert128To16BitsUUID( uuid128, uuid ) != NRF_SUCCESS )
{
BTLE_LOG_STREAM( "Failed to register 128bits UUID", Error );
}
else
{
BTLE_LOG_STREAM( "Correctly mapped 16bits UUID " + toHex( uuid.uuid ) + " to " + NRF51::PrivateDataService::UUID2String( uuid ), Info );
// Sanity check: Retrieve 128bits uuid from 16bits
uint8_t len = 0;
ble_uuid128_t restored128;
if ( sd_ble_uuid_encode(&uuid, &len, restored128.uuid128) == NRF_SUCCESS )
{
assert( len == 16 ); // len is actually 0....
assert( memcmp( restored128.uuid128, uuid128.uuid128, len*sizeof(uint8_t) ) == 0 );
}
else
{
assert( false );
}
}
}
}
else
{
BTLE_LOG_STREAM( "Failed to resolve 128bits UUID", Error );
}
}
}
Call to sd_ble_uuid_encode returns NRF_SUCCESS but len is 0 and restored128.uuid128 is unchanged, isn't len supposed to be 16 and restored128.uuid128 supposed to be equal to uuid128.uuid128?
