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單片機(jī)控制的電動(dòng)自行車驅(qū)動(dòng)系統(tǒng)部分程序(編輯修改稿)

2024-08-26 00:27 本頁(yè)面
 

【文章內(nèi)容簡(jiǎn)介】 BCF PIE1,ADIE ;禁止AD采樣中斷BCF STATUS,RP0BCF INTCON,INTE ;關(guān)RB0中斷MOVLW FULLPWM ;PWM輸出全高M(jìn)OVWF CCPR1LBCF T1CON,TMR1ON ;關(guān)閉手柄采樣BREAK2 BTFSC ADCON0,GO ;正在進(jìn)行AD采樣?GOTO BREAK2 ;是,等待AD采樣完畢BCF ADCON0,CHS0BCF ADCON0,CHS1 ;選擇0采樣通道,準(zhǔn)備采樣手柄電壓BCF PIR1,ADIF ;清AD采樣中斷標(biāo)志位MOVLW 0X06 ;延時(shí)MOVWF COUNTBREAK3 DECFSZ COUNTGOTO BREAK3BREAK5 BSF ADCON0,GO ;采樣TS值BREAK4 BTFSS PIR1,ADIF ;采樣完畢?GOTO BREAK4BCF PIR1,ADIFBCF STATUS,C MOVF ADRESH,0 ;當(dāng)前TS值送被減數(shù)MOVWF ACCbHIBSF STATUS,RP0MOVF ADRESL,0BCF STATUS,RP0MOVWF ACCbLOMOVLW TSONH ; V所對(duì)應(yīng)的采樣值送減數(shù)MOVWF ACCaHIMOVLW TSONLMOVWF ACCaLOCALL D_sub ;MOVLW FULLPWMMOVWF CCPR1LCLRWDTBTFSS ACCbHI,7 ;?GOTO BREAK5 ;是,重新采樣BTFSC PORTB,0GOTO BREAK5BSF FLAG1,OFF ;否,置相應(yīng)的標(biāo)志位RETURN ;返回 ;***************開(kāi)環(huán)PWM輸出子程序****************OUT_PWM BCF FLAG1,PWM ;清相應(yīng)的標(biāo)志位MOVF TSH,0 ;將調(diào)速手柄采樣值送至被加數(shù)MOVWF ACCaHIMOVF TSL,0MOVWF ACCaLOMOVLW 0XFF ;FF1F補(bǔ)碼為0XE1, VMOVWF ACCbHIMOVLW 0X1F MOVWF ACCbLOCALL D_addBTFSS ACCbHI,7 ;TS?GOTO PWM1 ;是,轉(zhuǎn)PWM1MOVLW FULLPWM ;否則輸出全高M(jìn)OVWF CCPR1LRETURNPWM1 MOVLW 0XFD ;0X27B=MOVWF ACCbHIMOVLW 0X85MOVWF ACCbLOCALL D_addBTFSC ACCbHI,7 ;TS?GOTO PWM3PWM2 CLRF CCPR1LBCF CCP1CON,4BCF CCP1CON,5RETURNPWM3 MOVLW 0X0FF ; V對(duì)應(yīng)的采樣值補(bǔ)碼送加數(shù) MOVWF ACCbHI MOVLW 0X1FMOVWF ACCbLOCALL D_add ;CLRF ACCaHI ;系數(shù)K=56=38H送乘數(shù)MOVLW 0X3FMOVWF ACCaLOCALL D_mpy ;得到放大128倍的低電平時(shí)間K*()MOVF ACCcHI,0 ;將結(jié)果取出MOVWF ACCaHIMOVF ACCcLO,0MOVWF ACCaLO MOVLW 0X64 ;PWM周期T減去低電平時(shí)間,得到高電平時(shí)間MOVWF ACCbHICLRF ACCbLO CALL D_sub BTFSC ACCbHI,7 ;低電平時(shí)間是否大于周期?GOTO PWM2 ;是,輸出全壓RLF ACCbLO ;否則,輸出與低電平時(shí)間對(duì)應(yīng)的高電平時(shí)間RLF ACCbHIMOVF ACCbHI,0 ;D10~D2位送CCPR1LMOVWF CCPR1LBCF CCP1CON,5 ;D0位送CCP1CON5BTFSC ACCbLO,7BSF CCP1CON,5BCF CCP1CON,4 ;CCP1CON4 BTFSC ACCbLO,6BSF CCP1CON,4RETURN ;返回;****************剎車中斷服務(wù)程序***************BRAKE CALL PUSH ;保存現(xiàn)場(chǎng)BCF STATUS,RP0 ;回存儲(chǔ)區(qū)0BSF FLAG1,SH
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