How to change the frequency value with the button on the Arduino?

Question

Arduino

There is a task: it is necessary to change the frequency value with one button. 4 frequency values ​​are required. When you turn on the arduino, according to the standard, the frequency will be 1kHz, when you press the button - 2kHz, press it again - 4kHz, again - 8kHz, press it again, then return to the default value of 1kHz.
Please tell me how to implement?

Answer 1

On button click, increment variable with reset. 0-1-2-3-0-1-2-3 and so on, and then, depending on the value of the variable, use the case statement to set the desired generation frequency. Nothing complicated.