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51單片機驅(qū)動直流電機用op07和三極管作為驅(qū)動,下面是proteus仿真原理圖:
仿真工程文件及所有完整程序等資料下載地址:
http://www.zg4o1577.cn/bbs/dpj-56304-1.html
單片機匯編語言源程序:
- ADC EQU 35H
- CLOCK BIT P2.4 ;定義ADC0808時鐘位
- ST BIT P2.5
- EOC BIT P2.6
- OE BIT P2.7
- PWM BIT P3.7
- ORG 00H
- SJMP START
- ORG 0BH
- LJMP INT_T0
- START: MOV TMOD,#02H ;
- MOV TH0,#20
- MOV TL0,#00H
- MOV IE,#82H
- SETB TR0
- WAIT: CLR ST
- SETB ST
- CLR ST ;啟動AD轉(zhuǎn)換
- JNB EOC,[ DISCUZ_CODE_12 ]nbsp; ;等待轉(zhuǎn)換結(jié)束
- SETB OE
- MOV ADC,P1 ;讀取AD轉(zhuǎn)換結(jié)果
- CLR OE
- SETB PWM ;PWM輸出
- MOV A,ADC
- LCALL DELAY
- CLR PWM
- MOV A,#255
- SUBB A,ADC
- LCALL DELAY
- SJMP WAIT
- INT_T0: CPL CLOCK ;提供ADC0808時鐘信號
- RETI
- DELAY: MOV R6,#1
- D1: DJNZ R6,D1
- DJNZ ACC,D1
- RET
- END
復(fù)制代碼 |
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