Speed of user_routines_fast.c

[Don Reid]

In normal mode Process_Data_From_Local_IO() is called over and over as fast as it can be. How often it runs depends on what it does (how long that takes).
If you have access to an oscilloscope and want to measure how long your code takes, you can pulse or toggle a digital output each time through and measure it.

In autonomous mode, User_Autonomous_Code() is called once, but it has a
loop inside it which runs once every 26 ms. It exits when autonomous mode ends.

These are both called from main() in main.c.