Hallo!
Ich bin leider eine ziemliche niete in Assembler , daher schaff ich das
alleine nicht.
Ich würde gerne für meinen Mikrocontroller C Code diese Routine so
umschreiben , dass sie ein vielfaches von 78 timecycles anstelle von 100
delayt.
kann mir jemand helfen?
danke.
1 | #include "p18cxxx.inc"
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2 |
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3 | ;/**********************************************************************
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4 | ;* Function Name: Delay100TCYx *
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5 | ;* Return Value: void *
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6 | ;* Parameters: unit: *
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7 | ;* Description: This routine delays for multiples of 100 *
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8 | ;* instruction cycles that is specified in unit. *
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9 | ;* Special Note: This routine provides multiples of 100 Tcy. *
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10 | ;* A value of 1 to 255 provides 100 to 25500 Tcy *
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11 | ;* delay. A value of 0 will provide a delay of *
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12 | ;* 25600 Tcy. *
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13 | ;**********************************************************************/
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14 | EXTERN DelayCounter1
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15 |
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16 | D100TCYXCODE CODE
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17 |
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18 | Delay100TCYx
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19 | movlw 0xff
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20 | movf PLUSW1,0
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21 | movlb DelayCounter1
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22 | movwf DelayCounter1
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23 | movlw 0x1a
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24 | bra $+2
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25 | bra $+2
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26 | bra D100_1
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27 |
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28 | D100x
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29 | movlw 0x20
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30 | D100_1
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31 | movwf INDF1
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32 | decfsz INDF1,1
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33 | bra $-2
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34 | decfsz DelayCounter1,1
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35 | bra D100x
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36 | bra $+2
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37 | return
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38 |
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39 | GLOBAL Delay100TCYx
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40 |
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41 | END
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