FlexAPI Waterfall Gain and Black Level

Mark Erbaugh

Help: I'm using the FlexAPI waterfall FallGain and FallBlackLevel, but changing them makes no difference to the data received.

Doug - K3TZR

Mark Erbaugh

James Whiteway

Mark, I don't believe SSDR does any color processing, other than setting and getting the gain and black levels. https://www.flexradio.com/flexlib/class_flex_1_1_smoothlake_1_1_flex_lib_1_1_waterfall.html I had issues with not understanding Threading and that some events may not occur in the same thread. Might this be part of the problem? I am not where I can look at how I fixed the problem. This was one of several things that Eric pointed out to me when I had problems with events not updating like I thought they should. Just some thoughts. James

Doug - K3TZR

The radio simply persists the state of those values. It doesn't actually use them. There are lots of parameters that the radio persists and some of them, like these, are really only used in the client (e.g. SmartSDR)

Mark Erbaugh

Thank you for the information. Is there a list of the parameters that are just persisted by the radio and are actually implemented by the client? IOW, is there a list of the UI features that are the responsibility of the client and not the radio? I want my client to take advantage of all the features of the radio that it can. Also, on a slightly different topic, there are events that indicate that a certain object, i.e. Radio, Panadapter, Slice, Meter has been added or removed. Is there a flow chart of how those objects are added an removed in normal and abnormal situations, so that The client can know when to create and destroy the appropriate software objects?

Doug - K3TZR

Mark, The SmartSDR User’s Guide is the only documentation that I know of that describes the functioning of SmartSDR, i.e. the client. The API ‘s source code is the best documentation for the API, i.e. FlexLib. There are a lot of questions / answers on this board that address some of your questions. The WIKI is out of date, incomplete., and occasionally incorrect. The events that occur, their sequence and timing is a topic that I have struggled with in my own app. As far as I know, there is no documentation, other than reading the API source code, that will help you with this. I wrote an app (xAPITester) just to be able to easily observe the action of the API. A lot of what I know came from that. If you have access to a Mac, you should try it.