Hi, Is it possible to determine the external clock frequency dynamicaly in my firmware even though the clock crystal on board is changed.
Yes, if it has some external signal with known timing to measure against.
Hi Dan, "if it has some external signal with known timing to measure against" Can you please be more specific, it would be of great help.
"Can you please be more specific ..." For example, the periodic output of a RTC, or less practically, measuring the bit width of serial receive pin changes when "trained" with the character 'U' (alternating ones and zeroes). Now you should get the idea.
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