A HACKRF based BTLE sniffer/scanner. sdr-x.github.io/BTLE-SNIFFER/
Fixed point real time processing code. Low latency. As fast as TI's packet sniffer.
In this video, you can see this HACKRF BTLE packet sniffer (upper half) acts just like TI's packet sniffer (the lower half in virtual machine). They capture the same packet contents and counts when a iPhone turn off then turn on Bluetooth nearby.
Check status and see source code&usage here: github.com/JiaoXianjun/BTLE