Hi, Is it possible to determine the external clock frequency dynamicaly in my firmware even though the clock crystal on board is changed.
Can you please be more specific,<p> Basically, what you need is some way measure time that is not dependent on the processor clock. Depending on the actual specifications, you can be as creative as you wish. A simple possibility would be measuring the time constant of a RC circuit.
the "old standard" id to take the transformed down net power and throuch suitable circuitry put it on a port pin. Erik PS same question - same answers as on the SILabs corss-post