Help learning to write an avalon wrapper for new custom component

There's a lot going on here. Things I've noticed:

goFlag isn't doing anything in your LEDFlash. How is it supposed to work there? Is it supposed to be what you call "enable1"?

Your LEDFlash instantiation is missing a number of the I/O defined in the module (enable1, enable100Hz, goFlag, etc.).

You don't need an address input unless there is more than 1 addressable location required for reading from or writing to. That does not look to be the case here. You could just use the avs_s0_read, avs_s0_readdata, avs_s0_write, and avs_s0_writedata signals to read from or write to goFlag_Start.

I don't see why you even need a state machine here. You already created enable signals for the flashing in the LEDFlash module and you're not doing anything more complicated than enabling or disabling the flashing.

I suggest you take a look at a number of online trainings. Search for "avalon", "platform designer", and "verilog" to find things that may be applicable:

https://www.intel.com/content/www/us/en/programmable/support/training/catalog.html

This is a good starting point for creating a custom component that will work in Platform Designer:

https://www.intel.com/content/www/us/en/programmable/support/training/course/oqsys3000.html

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