I have just completed gr-rpitx a GNU Radio sink block for emitting from Raspberry Pi's GPIO output thanks to F5OEO's librpitx (https://github.com/jmfriedt/gr-rpitx) and the dataflow is well scheduled as shown with the short movie https://github.com/jmfriedt/gr-rpitx/tree/main/examples/gr-rpitx_demo.mp4
However in this implementation, GNU Radio Companion complains that I have not included a Throttle block since it does not know that the sink is clocked by hardware. How can I tell GNU Radio that the stream data rate will be defined by this hardware sink ? Thanks, JM
