Initialization

By default, the TCB is in Periodic Interrupt mode. Follow these steps to start using it:
  1. 1.Write a TOP value to the Compare/Capture (TCBn.CCMP) register.
  2. 2.Enable the counter by writing a ‘1’ to the ENABLE bit in the Control A (TCBn.CTRLA) register.

    The counter will start counting clock ticks according to the prescaler setting in the Clock Select (CLKSEL) bit field in the Control A (TCBn.CTRLA) register.

  3. 3.The counter value can be read from the Count (TCBn.CNT) register. The peripheral will generate a CAPT interrupt and event when the CNT value reaches TOP.
    1. 3.1.If the Compare/Capture register is modified to a value lower than the current Count register, the peripheral will count to MAX and wrap around.
Parent topic: Functional Description