fresa cnc - manual eletronica completa com

8/8/2019 Fresa CNC - Manual Eletronica Completa com

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; Fi leSTEP. ASM-->vr on; . . . fo rPI C1 6F84mi crocontroler; Pro gra mtoF84aaarci onntrllefrauni polar; st ep motor Step andd re ct i onp i nsare RA0, RA1 ; RA2, RA3; RB0-3andRB4-7rthewi nd ngs; i nor der ( dri venb yN PNsm all si gt ra nsi sto rs orMOSFETS); Steps onn egati ve oi nge dgeofseppuls.

; CPUcnf gurti on; (I t' sa 16F84, RCosci llator,; watchdogti mero ff, po wer-upti mero n)

pro ce sso 1 6f8 4i nclu de <p1 6f84. i nc>__conf i g _RC_OSC& _WDT_OFF &_PWRTE_ON

; Declarevri ab

pttA equ H' 0D' ; Currents teppa tternnumber 0-7) forxi sAlstA equ H' 0E' ; Laststatefnoni si gh, 0i sl w)pttB equ H' 0F' ; Currents teppa tternnumber 0-7) forxi sBlstB equ H' 1 0' ; Laststateftepp nonas1 i sh i gh, 0i sl w)i npo rt equ H' 1 1 ' ; Valu eo fpo rtA whenread( storedf orla tera ccess)tem equ H' 12'

; Pro gra m

org 0 ; startataddress0

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

; STARTOFP I C1 6F84 CODEFORSTEP;;; ** ** ** ** ** ** ** ** ** ****;

; -- -- -- -- -- -- ---; ****Poweonesrpoi nt; -- -- -- -- -- -- ---

; ***I ni ti ali zati onofp rogram

; Set rtB asoutputndpora nput ecpt t)

movlw B' 00001 1 1 1 'tri s PORTAmovl w B' 00000000'tri s PORTB

; Clea rport sandze motor

clr PORTAmovlw B' 0001 0001 'mov wf PORTBclrf lastAclrf lastBclrf pattAclrf pattB

; Looparoundfrawletoeteryth ngali ze

movl w d' 255'movwf i npo rt

loop: decfsz i nport, f; gotoloop

; ***Bas cpro gra mloop

; Mai nr outi ne- ch ec kpi nst ates andst ep onn eg ati ve ed ge; Geortaandsor theekaxi sA; A1 0checksi fo l s0, newi s1 (upd ater egi ster); A01 checksi fo ld s1 , newi s0(stepandu pd ater egi ster); Si mi la rly forxi sB

mai n: movf PORTA, wmovwf i npo rt

A10: btfsc lastA, 0got oA01btfss i nport, 2got oA01bsf lastA, 0

A0: btfss lastA, 0gotoB1 0

btfsc i nport, 2gotoB1 0bcf lastA, 0ca llst epA



B10: btfsc lastB, 0got B01btfss i nport, 0got B01bsf lastB, 0

B01: btfss lastB, 0gotomai nbtfsc i nport, 0gotomai nbcf lastB, 0ca llst epBgotomai n

; -- -- -- -- -- -- ---; ***sep - su tocy caxi sAonehalfsep; i mpro ve thi slater tore adRA4andcoosfll/halfeasapprpr ate; Di ro f1 i si ncrease, els ed ecrease

stepA btfss i nport, 3decf pa ttA, fbtfsc i nport, 3i ncf pattA, f

; Pet er Homannsopti mi za ti onf radd /su ra cod7

mov lwD' 07'andw fpatt , f

; Geppattenndsdtooron ts0-3

movf PORTB, wandlw B' 1 1 1 1 0000'movw f tem pmovf pa ttA, wca lldco dei orwf temp, wmov wf PORTB

ret

; -- -- -- -- -- -- ---; ***se- su btoc caxi sBonehalfse; i mpro ve thi slater tore dRA4andcoosfll/halfesasapprpr ate; Di ro f1 i si ncrease, els ed ecrease

stepB btfss i nport, 1decf pattB, fbtfsc i nport, 1i ncf pattB, f

; Chec fo rpattevowandf x

; Pet er Homannsopti mi za ti onf radd /su ra cod7

mov lwD' 07'andw fpatt , f

; Geppattenndsdtoporon ts4-7

movf PORTB, wandlw B' 00001 1 1 1 'movw f tem pswapf temp, fmovf pa ttB, wca ll dco dei orwf temp, fswapf temp, wmov wf PORTB

ret

; -- -- -- -- -- -- ---; ***sepodesbtoen MU ); pa ttern sst oredi nw regi st er( lo werfo urb ts) fo rhalf st eppa ttern

dcode: addwf PCL, fretlwB' 00000001' ; 0retlwB' 00000011' ; 1retlwB' 00000010' ; 2retlwB' 00000110' ; 3retlwB' 00000100' ; 4retlwB' 00001100' ; 5

retlwB' 00001000' ; 6retlwB' 00001001' ; 7

; Mantyenoprog mcom man

end

fresa cnc - manual eletronica completa com

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