Timer Interrupt Formula

Projects Programming
1

Hi all I am using SAMD21 (ATSAMD21 Xpro) development board

I am trying to Blink LED using Timer interrupt . I Have used Atmel Studio 7.0 . I have used 8Mhz Crystal . I have used TCC2 With Prescallar 64 . I could able to blink LED using Configurator tool.
I wanted to Confirm Calculated and Configured are getting proper waveform.
I wanted to formula involve in calculation . What setting to Be change for Make it work On 4Mhz Crystal

2

This is your second topic about "interrupt formula". But things does not become clearer. What is your problem, exactly?
If you have a code, please show it

3

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