SLdt 221113          Disclaimer: None. Sue me. 

Assembler: avrasm2

uC-Forum: "AVR128DB28: TCB0 liefert kein Signal an PA2"
https://www.mikrocontroller.net/topic/529706#new

TCB im 'Periodic Interrupt Mode' liefert kein Ausgangssignal:
erzeugen per CCL


AVRŽ DB Family:      AVR128DA28, AVR128DB28, AVR128DB48
megaAVRŽ 0-series:   ATmega4809


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;******************************************************

; Beispiel: Systemtakt/16000 auf A2:

    sbi     VPORTA_DIR,2

    putiw   TCB0_CCMP,4000 -1
    puti    TCB0_CTRLB,0b0_0_0_0_0_000                  ; Periodic Interrupt Mode
    puti    TCB0_CTRLA,0b0_0_0_0_001_1                  ; CLK_PER/2, enable
    puti    EVSYS_CHANNEL1,$A0                          ; TCB0.CAPT

;#define    C_D_FF

#ifdef  C_D_FF
    puti    CCL_SEQCTRL0,0b0000_0001                    ; D flip-flop
    puti    CCL_LUT0CTRLB,0b0000_0001                   ; Masked input, Feedback
    puti    CCL_LUT1CTRLB,0b0000_0011                   ; Masked input, Event A
    puti    CCL_TRUTH0,0b00000001                       ; invert feedback
    puti    CCL_TRUTH1,0b00000010
    puti    CCL_LUT0CTRLA,0b0_0_00_000_1                ; enable
    puti    CCL_LUT1CTRLA,0b0_0_00_000_1                ; enable
    puti    CCL_CTRLA,1                                 ; enable
    puti    EVSYS_USERCCLLUT1A,1 +1
#else
    puti    CCL_SEQCTRL0,0b0000_0010                    ; JK flip-flop
    puti    CCL_LUT0CTRLB,0b0000_0011                   ; Masked input, Event A
    puti    CCL_LUT1CTRLB,0b0000_0011                   ; Masked input, Event A
    puti    CCL_TRUTH0,0b00000010
    puti    CCL_TRUTH1,0b00000010
    puti    CCL_LUT0CTRLA,0b0_0_00_000_1                ; enable
    puti    CCL_LUT1CTRLA,0b0_0_00_000_1                ; enable
    puti    CCL_CTRLA,1                                 ; enable
    puti    EVSYS_USERCCLLUT0A,1 +1
    puti    EVSYS_USERCCLLUT1A,1 +1
#endif

    puti    EVSYS_CHANNEL0,$10                          ; CCL.LUT0
#ifdef  __AVR128Dx__
    puti    EVSYS_USEREVSYSEVOUTA,0 +1
#else
    puti    EVSYS_USEREVOUTA,0 +1
#endif

main_loop:
  rjmp      main_loop
;*******************************************************