Freescale Semiconductor DRM079 Manual do Utilizador descarregar pdf (Página 32)

Implementation

Variable Speed DC Fan Control using the MC9RS08KA2, Rev. 0

32 Freescale Semiconductor

lda #255

Quiet:

bclr BUZZER, PTAD ; Clear buzzer

mov #30, MTIMMOD

mov #(mMTIMSC_TRST|mMTIMSC_TOIE), MTIMSC; Reset and Start Timer

wait

mov #(mMTIMSC_TSTP|mMTIMSC_TRST), MTIMSC; mask interrupt and clear flag

sta MAP_ADDR_6(SRS) ; Bump COP

dbnza Quiet

bra SoundBuzzer

;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

; Lookup Table

;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

org TableStart

dc.b 57, 57, 57, 57, 57, 60, 63, 67, 71, 76, 82, 82, 88, 88, 96, 96

dc.b 105,105,115,115,115,128,128,128,128,144,144,144,144,165,165,165

dc.b 165,193,193,193,193,193,232,232,232,232,232,232,232,232,232,232

dc.b 232,232,232,232,232,232,232,232,232,232,232,232,232,232,232,232

;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

; Reset Vector

;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

org $3ffc

Security:

dc.b $FF

jmp main

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Freescale Semiconductor DRM079 Manual do Utilizador Página 32