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課程設(shè)計(jì)-波形發(fā)生器(編輯修改稿)

2025-02-13 04:31 本頁(yè)面
 

【文章內(nèi)容簡(jiǎn)介】 據(jù) MOV P1,A 。數(shù)據(jù)輸出 MOV R1,A MOV R4,A DJNZ R1,$ LCALL RD_KB 。掃描鍵盤(pán) LCALL DISP CJNE R6,7CH,ZHENGXIAN 。判斷鍵值 CJNE R2,25,FANGBOGAO LCALL DISPFANGBO 。顯示頻率 FANGBOGAO: MOV DPTR,0F218H MOV A,255 MOVX @DPTR,A SETB MOV DPTR,0F230H MOVX @DPTR,A 。啟動(dòng) A_D JNB ,$ 。等待 EOC變高 JB ,$ 。等待 EOC變低 MOV DPH,0F2H MOVX A,@DPTR 。讀 A_D 數(shù)據(jù) MOV P1,A 。數(shù)據(jù)輸出 MOV R1,A MOV R4,A DJNZ R1,$ LCALL RD_KB LCALL DISP CJNE R6,7CH,ZHENGXIAN DJNZ R2,FANGbodi LCALL DISPFANGBOSJMP FANGBOZHENGXIAN:CJNE R6,39H,SANJIAO 。正弦波發(fā)生器MOV R5,00HSIN:MOV A,R5MOV DPTR,TABMOVC A,@A+DPTRMOV DPTR,0F218HMOVX @DPTR,A SETB 。初始化 MOV DPTR,0F230H MOVX @DPTR,A 。啟動(dòng) A_D JNB ,$ 。等待 EOC變高 JB ,$ 。等待 EOC變低 MOV DPH,0F2H MOVX A,@DPTR 。讀 A_D 數(shù)據(jù) MOV P1,A MOV R4,A MOV R1,A DJNZ R1,$ INC R5LCALL RD_KBLCALL DISPCJNE R6,39H,SANJIAOCJNE R5,128,CCLCALL DISPZHENGXIANCC:CJNE R5,0,DDLCALL DISPZHENGXIANDD:SJMP SINSANJIAO:CJNE R6,77H,NEXT1 。三角波發(fā)生器MOV A,0SJUP:MOV DPTR,0F218H MOVX @DPTR,A 。三角上升波形 INC A PUSH ACC SETB 。初始化 MOV DPTR,0F230H MOVX @DPTR,A 。啟動(dòng) A_D JNB ,$ 。等待 EOC變高 JB ,$ 。等待 EOC變低 MOV DPH,0F2H MOVX A,@DPTR 。讀 A_D 數(shù)據(jù) MOV P1,A 。數(shù)據(jù)輸出 MOV R4,A MOV R1,A DJNZ R1,$ LCALL RD_KB LCALL DISP POP ACC CJNE R6,77H,NEXT1 CJNE A,44H,SJUPLCALL DISPSANJIAO 。顯示頻率SJDO: MOV DPTR,0F218H MOVX @DPTR,A 。三角下降波形 DEC A PUSH ACC SETB 。初始化 MOV DPTR,0F230H MOVX @DPTR,A 。啟動(dòng) A_D JNB ,$ 。等待 EOC變高 JB ,$ 。等待 EOC變低 MOV DPH,0F2H MOVX A,@DPTR 。讀 A_D 數(shù)據(jù) MOV P1,A 。數(shù)據(jù)輸出 MOV R4,A MOV R1,A DJNZ R1,$ LCALL RD_KB LCALL DISP POP ACC CJNE R6,77H,NEXT1 CJNE A,0H,SJDO LCALL DISPSANJIAOSJMP SANJIAONEXT1:RETDISPZHENGXIAN: 。頻率顯示模塊LCALL DINGSHIPUSH ACCMOV A,R4 。頻率顯示算法設(shè)計(jì)MOV B,2DIV ABMOV B,5MUL ABADD A,180MOV R0,AMOV A,BADDC A,0MOV B,AMOV A,R0ANL A,0FHMOV DPTR,LEDSEGMOVC A,@A+DPTRMOV NUMS1,AMOV A,R4MOV B,2DIV ABMOV B,5MUL ABADDC A,180MOV R0,AMOV A,BADDC A,0MOV B,AMOV A,R0SWAP AANL A,0FHMOV DPTR,LEDSEGMOVC A,@A+DPTRMOV NUMS2,AMOV A,R4MOV B,2DIV ABMOV B,5MUL ABADDC A,180MOV R0,AMOV A,BADDC A,0MOV B,AMOV A,R0ANL B,0FHMOV A,BMOV DPTR,LEDSEGMOVC A,@A+DPTRMOV NUMS3,AMOV DPTR,P8255CMOV A,08HMOVX @DPTR,A 。位選MOV DPTR,P8255AMOV A,NUMS1MOVX @DPTR,A 。段選LCALL DINGSHIMOV DPTR,P8255CMOV A,10HMOVX @DPTR,AMOV DPTR,P8255AMOV A,NUMS2MOVX @DPTR,ALCALL DINGSHIMOV DPTR,P8255CMOV A,18HMOVX @DPTR,AMOV DPTR,P8255AMOV A,NUMS3MOVX @DPTR,APOP ACCRETDISPSANJIAO:LCALL DINGSHIPUSH ACCMOV A,R4MOV B,4DIV ABMOV B,5MUL ABADD A,100MOV R0,AMOV A,BADDC A,0MOV B,AMOV A,R0ANL A,0FHMOV DPTR,LEDSEGMOVC A,@A+DPTRMOV NUMS1,AMOV A,R4MOV B,4DIV ABMOV B,5MUL ABADDC A,100MOV R0,AMOV A,BADDC A,0MOV B,AMOV A,R0SWAP AANL A,0FHMOV DPTR,LEDSEGMOVC A,@A+DPTRMOV NUMS2,AMOV A,R4MOV B,4DIV ABMOV B,5MUL ABADDC A,100MOV R0,AMOV A,BADDC A,0MOV B,AMOV A,R0ANL B,0FHMOV A,BMOV DPTR,LEDSEGMOVC A,@A+DPTRMOV NUMS3,AMOV DPTR,P8255CMOV A,08HMOVX @DPTR,AMOV DPTR,P8255AMOV A,NUMS1MOVX @DPTR,ALCALL DINGSHIMOV DPTR,P8255CMOV A,10HMOVX @DPTR,AMOV DPTR,P8255AMOV A,NUMS2MOVX @DPTR,ALCALL DINGSHIMOV DPTR,P8255CMOV A,18HMOVX @DPTR,AMOV DPTR,P8255AMOV A,NUMS3MOVX @DPTR,APOP ACCRETDISPFANGBO:LCALL DINGSHIPUSH ACCMOV A,R4MOV B,5DIV ABADD A,12ANL A,0FHMOV DPTR,LEDSEGMOVC A,@A+DPTRMOV NUMS1,AMOV A,R4MOV B,5DIV ABADD A,12SWAP AANL A,0FHMOV DPTR,LEDSEGMOVC A,@A+DPTRMOV NUMS2,AMOV DPTR,P8255CMOV A,08HMOVX @DPTR,AMOV DPTR,P8255AMOV A,NUMS1MOVX @DPTR,ALCALL DINGSHIMOV DPTR,P8255CMOV A,10HMOVX @DPTR,AMOV DPTR,P8255AMOV A,NUMS2MOVX @DPTR,ALCALL DINGSHIPOP ACCRETDISP:MOV DPTR,P8255A 。顯示鍵值MOV A,KEYVALMOVX @DPTR,ARETRD_KB:MOV A,01H 。掃描第二行MOV DPTR,P8255CMOVX @DPTR,AMOV DPTR,P8255BMOVX A,@DPTRCJNE A,0FFH,J_KEYL0 。判斷是否有鍵按下,有鍵轉(zhuǎn)JKEYL0SJMP NOKEYJ_KEYL0:LCALL DINGSHI 。延時(shí)消抖MOV DPTR,P8255B 。讀鍵值MOVX A,@DPTRMOV R7,08HCJNE A,0FFH,KEYCAL 。計(jì)算鍵值SJMP NOKEYKEYCAL:MOV R0,08HSHIFT:RRC AJNC CALCINC R7DJNZ R0,SHIFTCALC:MOV DPTR,LEDSEG 。換算顯示碼MOV A,R7MOVC A,@A+DPTRMOV KEYVAL,AMOV R6,ASJMP KEYWAITNOKEY: SJMP KEYEXITKEYWAIT:MOV DPTR,P8255B 。等待鍵釋放MOVX A,
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