Nghiên cứu, thiết kế, chế tạo điều tốc cho các trạm thủy điện
MỤC LỤC Trang Đặt vấn đề 1 Phần I Lý thuyết cơ bản của thiết bị điều tốc 3 I.1. Sự điều chỉnh tua bin và sự đièu chỉnh tua bin và phân loại máy điều. 3 I.1.1. Sơ l−ợc về lý thuyết về điều chỉnh tua bin thuỷ lực 3 I.1.2. Giới thiệu các loại máy điều tốc trong trạm thuỷ điện 5 I.2. NHU CầU CáC LOạI MáY đIềU TẩC TRONG TRạM THUÛ đIệN 9 I.3. XU H−ÍNG CHế TạO CáC LOạI MáY DIềU TẩC TRêN THế GIÍI 9 I.4 Chế tạo máy điều tốc ở Việt Nam 11 Phần II. Nghiên cứu, chế tạo điều tốc điều chỉnh l−u l−ợng và điều tốc điều chỉnh phụ tải 13 II.1 Nghiên cứu xử dụng các bộ vi xử lý (P), â thông dụng vào việc chế tạo máy điều tốc 13 II.1.1 Lựa chọn sử dụng vi xử lý 13 II.1.2. ứng dụng vi xử lý 8051 13 II.1.3 Nghiên cứu ứng dụng vi xử lý tại trung tâm nghiên cứu thuỷ điện nhỏ – Viện Khoa học Thuỷ lợi 15 II.1.4. Thông tin từ n−ớc ngoài 17 II.2. Nghiên cứu mở rộng bộ điều khiển điều tốc l−u l−ợng thành bộ điều khiển đa tác dụng 19 II.3. Xác định ph−ơng pháp điều chỉnh tua bin 20 II.3.1. Sơ đồ điều khiển 20 II.3.2. Sơ đồ khối chức năng 23 II.4 Thiết kế phần cứng 23 II.4.1 CPU 23 II.4.2 Khối hiển thị 24 II.4.3 Khối đo l−ờng tần số 25 II.4.4 Khối báo hiệu mực n−ớc 26 II.4.5 Tín hiệu đóng máy sự cố bên ngoài 26 II.4.6 Các công tác thiết lập giá trị vận hành 27 II.4.7 Khối điều khiển 27 II.4.8 Khối cấp nguồn 28 II.5. Xây dựng phần mềm điều khiển 28 II.5.1 Lựa chọn ngôn ngữ 28 II.5.2 Sơ đồ khối tính toán chính 29 II.6 Chế tạo hoàn chỉnh bộ điều tốc 37 II.7 Xây dựng qui trình vận hành, sửa chữa, bảo d−ỡng 38 II.8 Đề xuất nâng cao chất l−ợng thiết bị 38 II.9 Bản vẽ nguyên lý 39 Phần III Nghiên cứu bộ điều tốc điều khiển phụ tải 40 III.1 Tổng quan 40 III.1.1 Thông tin từ n−ớc ngoài 40 III.1.2 Lựa chọn ph−ơng án thiết kế 42 III.2 Thiết kế phần cứng 50 III.2.1 CPU 50 III.2.2 Khối đo l−ờng tần số 51 III.2.3 Công tác thiết lập giá trị vận hành 51 III.2.4 Khối điều khiển tải 53 III.2.5 Đièu khiển kiểu Rơle 53 III.2.6 Khối cấp nguồn 53 III.3 Xây dựng phần mềm điều khiển 54 III.3.1 Lựa chọn ngôn ngữ 54 III.3.2 Sơ đồ khối tính toán chính 54 III.4 Chế tạo hoàn chỉnh bộ điều khiển 59 III.5 Đề xuất nâng cao chất l−ợng thiết bị 60 III.6 Bản vẽ nguyên lý 61 Phụ lục I Phần mềm điều khiển l−u tốc điều chỉnh l−u l−ợng 63a Phụ lục II Phầm mềm điều khiển điều tốc điều chỉnh phu tải 102
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mmand
X05af: ret
;=============================================================
;X05B0:Nap gia tri 1Ah vao cac o nho (23h),(22h),(21h),(20h)
; Khi hien thi, ROM 31Ah=00 -> Tat het cac LED 7 thanh
;=============================================================
KhongHienSo:
mov r0,#24h
mov r2,#4
X05b4: dec r0
mov @r0,#1ah
djnz r2,X05b4
ret
;==============================================================
X05e6: ;Tien bo xung - Phuc vu X028b
mov r2,#80h
jb Acc.4, X05f1
mov r2,#60h
jb Acc.5, X05f1
mov r2,#98h
X05f1: ret ; 05f1 - 83 .
;===============================================================
; Giam dan o nho chi ra trong R0, neu = 0 thi gan gia tri 1
;===============================================================
X0617: mov a,r6
jb Acc.6, X062e ; d=0 - Trong luoi
jb Acc.5, X062e ; Doc lap & x=0 Mode 1,2
mov a,r6 ; Doc lap & mode 3
swap a ; A=0D0N.0dxn
anl a,#3 ; A=xn=11,10,01
add a,#0f8h
mov r3,a ; R3=FBh,FAh,F9h
mov r2,#6
X0626: call X073a
jb Acc.7, X062e
djnz r2,X0626
ret
X062e: clr a
ret
X0661: mov a,r6
jb Acc.6, X066e ; Neu chay doc lap
mov r0,#7eh
mov a,@r0
jz X066e
mov r1,#W_level
mov @r1,#2
X066e: mov r0,#67h
ret
Nap1:
mov @r0,#3 ; 3 -> (71h)
mov r0,#28h ;
mov @r0,#4 ; 4 -> (28h)
inc r0 ;
mov @r0,#5 ; 5 -> (29h)
ret ;
B¸o c¸o khoa häc §Ò tµi KC07- 04
80
;
X0689: mov r0,#Flags
mov a,@r0
mov r0,#29h
jb Acc.0, X0691
dec r0
X0691: inc @r0
setb f0
ret
X0696: mov r0,#28h
mov a,@r0
add a,#0fdh
jc X06a3
inc r0
mov a,@r0
add a,#0fdh
jnc X06b3
X06a3: mov a,r6
jb Acc.6, X06b3
mov r0,#6ah
mov @r0,#0ah
dec r0
jb Acc.5, X06b3
mov @r0,#6
dec r0
mov @r0,#0ch
X06b3: ret ;(Quay tro lai X016f)
X06b4:
mov r2,#20h
mov r3,#0e1h
jb Acc.5, X06c2
mov r2,#0
jb Acc.4, X06c2
mov r2,#0eah
dec r3
X06c2: ret
;==============================================================
R3R2_Add_7978: ; Kiem tra o nho (79h.78h) so voi tri so R3.R2
mov r0,#78h
mov a,@r0
add a,r2
inc r0
mov a,@r0
addc a,r3
ret
;===============================================================
; Doan chuong trinh dong Role qua cong P1
;===============================================================
Dong_Role:
cjne R4,#1Dh,Next1
call Ngat_Role ; Ngat Toan bo role
ajmp EndNext
Next1:
cjne R4,#69h,Next2
setb p2.4 ; Close ON
clr p2.5
setb p3.4 ; Over ON
clr p3.5
clr p2.6 ; Open OFF
setb p2.7
setb p3.0 ; Sync OFF
clr p3.1
ajmp EndNext
Next2:
cjne R4,#59h,Next3
B¸o c¸o khoa häc §Ò tµi KC07- 04
81
setb p2.4 ; Close ON
clr p2.5
setb p3.5 ; Over OFF
clr p3.4
clr p2.6 ; Open OFF
setb p2.7
setb p3.0 ; Sync OFF
clr p3.1
ajmp EndNext
Next3:
cjne R4,#95h,X06df
setb p2.6 ; Open ON
clr p2.7
clr p2.4 ; Close OFF
setb p2.5
setb p3.0 ; Sync OFF
clr p3.1
clr p3.4 ; Over Speed OFF
setb p3.5
EndNext:
nop
nop
djnz r3,Dong_Role
djnz r2,Dong_Role ; R2=0A (X06e0)
X06df: ret
X06e0: mov r0,#1dh
mov @r0,#0feh
mov r0,#72h
mov @r0,#0dch
inc r0
mov @r0,#0dch
mov r0,#2ah
mov @r0,#8
mov r2,#0ah
mov r0,#29h
mov @r0,#5
ret
X0700: mov r0,#38h
mov r1,#36h
call X074c
jb Acc.7, X0711
mov r1,#38h
mov r0,#36h
call X074c
jb Acc.7, X072e
X0711: mov r0,#3ah
mov r1,#3ch
call SubR0_R1
call Cpl2Nor
mov a,r2
rr a
rr a
nop
anl a,#3fh
mov r2,a
jz X072e
X0722: mov a,r7 ; R7 chua dia chi 69h hoac 6ah
mov r0,a
mov r3,#0fbh
X0726: mov a,@r0
add a,r3
jnc X072e ; @R7 < 5
call DecToOne
djnz r2,X0726
X072e: mov a,r7
B¸o c¸o khoa häc §Ò tµi KC07- 04
82
mov r0,a
call DecToOne ; Giam noi dung @R7
ret
X0735: call X0041
mov r2,a
ret
X073a: mov a,@r1
add a,@r0
mov r4,a
inc r0
inc r1
mov a,@r1
addc a,@r0
mov r5,a
inc r0
inc r1
mov a,r4
add a,r3
mov a,r5
addc a,#0ffh
ret
X074c: mov r2,#4
mov r3,#0fbh
X0750: call X073a
jb Acc.7, X0756
djnz r2,X0750
X0756: ret
X0757: mov r2,#0beh
mov r3,#0d8h
call R3R2_Add_3F3E ; Neu Ts may phat > 39,8 thi bit 7=1
ret
X0764: mov r2,#6
mov r3,#0ffh
X0768: call X073a
jb Acc.7, X078a
djnz r2,X0768
mov r0,#34h
mov r1,#3ch
call SubR0_R1
call Cpl2Nor
X0776: mov r0,#7bh
mov a,@r0
anl a,#0f8h
jz X077f
call DecToOne
X077f: mov r0,#7ch
mov a,@r0
anl a,#0f8h
jz X0788
call DecToOne
X0788: djnz r2,X0776
X078a: ret
;==============================================================
X078d: mov r0,#40h
mov a,@r0
add a,r2
inc r0
mov a,@r0
addc a,#0
ret
X0797: mov r0,#40h
mov a,@r0
add a,r2
inc r0
mov a,@r0
addc a,#0ffh
ret
B¸o c¸o khoa häc §Ò tµi KC07- 04
83
Ngat_Role:
clr p2.4 ; Close OFF
setb p2.5
clr p2.6 ; Open OFF
setb p2.7
setb p3.0 ; Sync OFF
clr p3.1
clr p3.4 ; Over Speed OFF
setb p3.5
nop
nop
ret ; Tong cong 16 chu ky may (8039)
X07b0: mov r0,#1dh ; 2 ck
mov @r0,#70h ; 2 ck (1Dh)=70h
mov r2,#50h ; 2 ck
X07b6: call Ngat_Role
nop
nop ; 16 + 4 =20 ck
djnz r3,X07b6
djnz r2,X07b6
ret
;==============================================================
; Doc ROM
;===============================================================
ROM_MODE:
mov a,r6 ; R6=0dxn0D0N
swap a ; A =0D0N0dxn
anl a,#7 ; A =00000dxn
orl a,#38h ; A =00111dxn
mov dptr,#ROM_DB ; Doc ROM tu 39h,3Ah,3Bh,3Dh,3Eh,3Fh
movc a,@a+dptr ; FA(MODE3),FB(MODE2),FC(MODE1),FD(MODE3),B2(MODE2),10(MODE1)
mov r0,#7ah
mov @r0,#4 ; 4 -> (7ah)
inc r0 ;
mov @r0,a ; So doc tu rom -> (7Bh)
inc r0
mov @r0,a ; So doc tu rom -> (7Ch)
inc r0
mov @r0,a ; So doc tu rom -> (7Dh)
ret
X07e2: mov a,r6
jb Acc.0, X07ee ;Neu HOA thi ket thuc
call ROM_MODE
mov r0,#7ch
mov @r0,#4
dec r0
mov @r0,#4
X07ee: mov r0,#7ah
mov @r0,#4
ret
X07f3: mov @r0,#2 ; r0 = 6ch or 6dh
; truoc khi goi doan nay hai op nay deu giam toi 1
mov a,@r1 ; r1 tro toi dia chi 70h or 71h
anl a,#7 ; giu lai 3 bit cuoi
mov @r1,a
add a,#0fbh ; so sanh voi 5 (nho hon)
jc X07fe
inc @r1
X07fe: ret
;==============================================================
XuLy:
call X0083 ; 14 83
call Dem_Chu_Ky ; 14 60
call X0c00 ; 94 00
call Tinh_Tan_So ; 54 83
call X0b00 ; 74 00
B¸o c¸o khoa häc §Ò tµi KC07- 04
84
call ChuanBiHienThi ; 34 00
call X0a00 ; 54 00
call Tinh_PD ; 54 a0
call X0972 ; 34 72
nop
nop
ret
;====================================================================
X0083: mov r1,#Count ; 2Fh
mov a,@r1 ; (Count) -> ACC
nop
anl a,#0fh ; Xet 4 bit cuoi
jnz X0092 ; Neu 4 bit cuoi khac 0
mov r0,#50h ; Neu 4 bit cuoi bang 0 - Chia het cho 16
call DecToOne ; Giam o nho 50h sau 16 lan dem tan so
inc r0
call DecToOne ; Giam o nho 51h sau 16 lan dem tan so
X0092: ;call SW12ToR6 ; Dua gia tri bien SW12 -> ACC -> R6
mov r0,#SW12
mov a,@r0
mov r6,a ;ret
mov r3,a ; R3 = SW12
mov r0,#Flags
mov a,@r0
mov r7,a ; ret
nop
nop
anl a,#64h ; Xet bit 6,5,2
jnz X00d9 ; 0 -> Ket thuc
clr TR0
call Doc_Cong_Tac
mov r0,#Flags
mov a,@r0
jb Acc.7, X00af ; Neu bit 7 = 1,
jb Acc.3, X00af ; Neu bit 3 = 0 (bang 1 sau khi da dao)
mov a,r3 ; Neu bit 3 = 1 (bang 0 sau khi da dao), A=R3=SW12
xrl a,r6 ; R6=0dxn.0D0N XOR SW12 (=0dxn.0D0N)
jb Acc.0, X00af ; =1-> N=0 (Cong tac co su thay doi o vi tri HOA)
call X07b0 ; Neu khong doi-> Ngat ROLE trong R3*R2 lan =SW12*50h (0,075 ms)
X00af: mov a,r2 ; Trong Doc_Cong_Tac r2=0000ldcn
mov r0,#27h
X07d2: jb Acc.1, X07dc ; Neu cong tac thay doi gia tri call DecToOne ; Neu
co tin hieu CloseCommand thi giam o nho (27h)
jnz X07de
mov a,#2
orl a,r7 ; R7=Flags
mov r7,a ; set bit 1
X07dc: mov a,#2
X07de: anl a,#7 ; lay 3 bit thap
mov @r0,a
nop
mov a,R7
jb Acc.7, X00c2
mov a,r6 ; A=0dxn.0D0N
anl a,#70h ; A=0dxn.0000 (Che do dieu tan - Normal)
jb Acc.6, X00c0 ; d=1 -> Doc lap
mov a,#50h ; Neu trong luoi ->A=0101.0000 ->Dieu tan, mode3, doclap
X00c0: nop
mov r6,a ; Nap A tro lai R6, =0dxn.0000 hoac 0101.0000
X00c2: mov r0,#7eh
mov a,@r0
jnz X00cd ; (7Eh) FFh
mov a,r6 ; Neu (7Eh)=FFh
anl a,#45h ; A=0d00.0D0N
jz X00d1 ; = 0 -> Normal + Luoi
B¸o c¸o khoa häc §Ò tµi KC07- 04
85
X00cd: mov r0,#2dh ; Nguoc lai (2Dh)=1
mov @r0,#1
X00d1: mov r0,#SW12
mov a,r6
mov @r0,a ; R6 -> (SW12)
mov r0,#Flags
mov a,r7
mov @r0,a ; R7 -> Flags
X00d9:
ret ; End X0083
;========================================================================
Dem_Chu_Ky:
mov r1,#48h
mov r2,#8 ; So lan lap cho XoaSoHienThi
clr a ; A=00h
XoaSoHienThi:
mov @r1,a ; 00 -> (48h)
inc r1
djnz r2,XoaSoHienThi ; Dien 00 vao (49h,4Ah,4Bh,4Ch,4Dh,4Eh,4Fh)
mov r0,#Count ; (2Fh)
mov a,@r0 ; A=(Count)
inc @r0 ; (Count)+1
anl a,#3 ; Lay 2 bit cuoi cua Count
jnz Tieptuc2 ; Count khong chia het cho 4 khong KTLP
call KiemTraLechPha ; 4 lan Dem_Chu_Ky, 1 lan KTLP
Tieptuc2:
clr f1 ; F1=0, Chua dem Tan so
X0ee5: ;
mov r0,#Flags
mov a,@r0
jb Acc.7,TanSoMay ; Neu bit 7=1 chi kiem tra tan so may phat
; Neu bit 7 cua (Flags)=0
mov a,r6 ; Neu cong tac HOA khong o vi tri HOA
nop
jb Acc.0,TanSoMay ; chi kiem tra tan so may phat
TanSoLuoi:
setb p3.3 ; Cau hinh cong Input
mov TL1,#0
mov TH1,#0
jnb p3.3,$ ; Neu luoi=0 thi cho khi luoi=1
jb p3.3,$ ; Neu luoi=1 thi cho khi luoi=0
call X0d00 ; Tre R2*0.250 ms = (3Fh)*0,250 ms
mov @r0,#17h ; 17h ~ 23 ms, TS luoi qua thap -> Reset
jnb p3.3,$ ; Neu luoi=0 thi cho khi luoi=1
jb p3.3,$ ; Neu luoi=1 thi cho khi luoi=0
setb TR1 ; Khoi dong Timer1 de dem tan so
setb TR0
jnb p3.3,$ ; Neu luoi=0 thi cho khi luoi=1
jb p3.3,$ ; Neu luoi=1 thi cho khi luoi=0
clr TR1 ; Dung timer dem tan so
clr a
Wait4ChuKy:
mov @r0,#17h ; 2Eh ~ 46 ms, TS luoi qua thap -> Reset
jnb p3.3,$ ; Neu luoi=0 thi cho khi luoi=1
jb p3.3,$ ; Neu luoi=1 thi cho khi luoi=0
djnz R5,Wait4ChuKy ; R5 =4 trong X0D00
clr TR0
mov p0,#0ffh ; Tat den LED
call X0d1e ; So dem duoc la gia tri 2 byte: R3R2
mov r5,#6 ;
mov r0,#58h ;
mov r1,#5ah ;
mov r0,#5eh ;
call NapR3R2ToR0 ; Tai dia chi 5Fh.5Eh chua gia tri 2 byte cua tan so luoi dien
mov r0,#77h ;
B¸o c¸o khoa häc §Ò tµi KC07- 04
86
call DecToOne
mov r1,#LED1
X08ec: mov @r1,#1ah ; 1Ah -> LED1, khong hien so -> Nhap nhay so cuoi
mov r0,#Flags
mov a,@r0
jb acc.3,X08f6 ; neu bit Flags.3=0 thi thoi (HOA)
call KhongHienSo ; Neu khong o che do HOA -> Tat het LED ( Nhap nhay?)
X08f6:
TanSoMay:
mov TL1,#0
mov TH1,#0
setb p3.2
jnb p3.2,$ ; Cho den khi T1=1 (May phat)
jb p3.2,$ ; Cho den khi T1=0 (May phat)
call X0d00 ; (Trong doan nay stop Timer)
mov @r0,#40h ; (Doan X0d3a cu)~ 14.5 Hz
jnb p3.2,$ ; Cho den khi T1=1 (May phat)
jb p3.2,$ ; Cho den khi T1=0 (May phat)
setb TR1
setb TR0
mov @r0,#40h ;
jnb p3.2,$ ; Cho den khi T1=1 (May phat)
jb p3.2,$ ; Cho den khi T1=0 (May phat)
clr TR1 ; Dung timer dem tan so
clr a
Wait4ChuKy2:
mov @r0,#40h ; 45h ~ 14.5 Hz, TS luoi qua thap -> Reset
jnb p3.2,$ ; Neu luoi=0 thi cho khi luoi=1
jb p3.2,$ ; Neu luoi=1 thi cho khi luoi=0
djnz R5,Wait4ChuKy2 ; R5 =4 trong X0D00
clr TR0
clr a
mov p0,#0ffh ; Tat den LED
call X0d1e
mov r5,#0eh
mov r0,#30h
mov r1,#32h
mov r0,#3eh
call NapR3R2ToR0
cpl f1 ; F1=1 Dem xong tan so
ret ; END OF Dem_Chu_Ky
;===================================================================
X0d00: mov a,3fh ; A=(3Fh) Byte cao cua so dem chu ky may phat
mov r2,a ; Dua noi dung (3Fh) vao R2
X0d04: mov r1,#7Dh
X0d06: djnz r1,X0d06 ; Tre 7Dh=125 x 2 chu ky=250chu ky= 0,250 ms
djnz r2,X0d04 ; Tre R2 x 0,250 ms (50 Hz - R2=1Fh=31)
mov r0,#Dsp_Count ; R0=(1Dh)
mov r1,#1ah ; R1=1Ah
mov r5,#4 ; R5=4
CLR TR0 ; Dung Timer
call Ngat_Role
clr a
mov @r0,a ; 00 -> (Dsp_Count R5-rb1)
ret
;==============================================================
X0d1e
N1: mov @r0,#0 ; 0 -> (1Dh)
mov R3,TH1
mov R2,TL1
mov r3,a
SETB tr0
ret ; R3.R2 = 1F40h (8000)
N2: mov R3, #0Bh
mov R2, #0DBh
B¸o c¸o khoa häc §Ò tµi KC07- 04
87
mov a, TL1
add a,R2
mov a, TH1
addc a, R3
jb acc.7,N1
mov TH1,#0F4h
mov TL1,#24h
ret
;==============================================================
; Kiem tra do lech pha 2 may la (0,5 x R4) ms
;==============================================================
So_Pha1:
mov r4,#1 ; Lan dau R4=1
So_Pha:
mov r1,#Dsp_Count ;
mov @r1,#0d6h ; 1101.0110 -> (Dsp_Count)
setb p3.2 ; (1Dh)=D6=214
setb p3.3
T0_Duong:
mov a,@r1 ;
jb acc.5,Ketthuc1 ; Neu (1D.5)=1, da qua 22 chu ky hien thi
jb p3.3,T0_Duong ; (1Dh) = 1011.1111 = BFh= 191
T0_Am:
mov a,@r1 ; den khi T0=0, kiemtra tiep
jb acc.5,Ketthuc1 ; Neu (1D.5)=1 thi ket thuc, (Dsp_Count)=FAh
jnb p3.3,T0_Am ; (1D.5)=0 -> Neu T0=0 tiep tuc kiem tra (1D.5)
call Doi_nua_ms ; khi T0=1 doi sau 0,5*R4 ms
jnb p3.3,Ketthuc2 ; jnt1 Neu T1=0 thi ket thuc, A=4Eh
jb p3.3,$ ; Neu T1=1, (T0=1) cho doi
call Doi_nua_ms ; khi T0=0, doi sau 0,5*R4 ms
jb p3.2,Ketthuc2 ; jt1 Neu T1=1 thi ket thuc, A=4Eh
; T1 khong cham pha so voi T0 qua 0,5*r4 ms
jnb p3.2,$ ; jnt1 Neu T1=0, cho den khi T1=1
call Doi_nua_ms ; Tre sau 0,5*R4 ms
jnb p3.3,Ketthuc2 ; jnt0 Neu T0=0 thi ket thuc, A=4Eh
jb p3.2,$ ; jt1 Neu T0=1 cho den khi T1=0
call Doi_nua_ms ; Doi 0,5*R4 ms
clr a ;
jnb p3.3,Ketthuc1 ; jnt0 Neu T0=0 thi ket thuc (Dsp_Count)=FAh
; T0 khong cham pha so voi T1 qua 0,5*r4 ms: A=0
Ketthuc2:
mov a,#4eh ; Neu T0=1 thi ket thuc A=4Eh va (Dsp_Count)=FAh
; T0 cham pha so voi T1 qua 0,5*r4 ms: A=4Ef=0100 1110
Ketthuc1:
mov @r1,#0fah ; Neu bit5 cua (Dsp_Count)=1 thi FAh=11111010 -> (Dsp_Count)
ret ;
Doi_nua_ms:
mov a,r4 ; A=R4 1 ck
rl a ; Neu R4<8F: A=R4*2 1 ck
add a,r4 ; A=3*R4 1 ck
mov r3,a ; R3=3*R4 1 ck
Lap3: mov r2,#52h ; R2=82 2 ck
djnz r2,$ ; X0eb2 82*2 ck = 164 ck
djnz r3,Lap3 ; 2 ck
ret ;
;====================================================
; Kiem tra do lech pha
;====================================================
KiemTraLechPha:
mov r0,#7eh ; R0=7Eh
clr c
mov a,@r0 ; (7Eh) -> A =3F=0011.1111 (Truoc khi goi KTLP)
rlc a ; A*2=7E, C = bit MSB cua (7Eh)=0
mov @r0,a ; A=7E -> (7Eh)
nop
call So_Pha1 ; Kiem tra do lech pha 2 may < 0,5*R4 ms
; Neu lech pha lon hon 0,5*R4 ms A= 4E =0100 1110
B¸o c¸o khoa häc §Ò tµi KC07- 04
88
; Neu lech pha nho hon 0,5*R4 ms A= 00 =0000 0000
jb acc.5,X0ef8 ; Neu ACC.5 = 1 (Truong hop f < 22 Hz)
jb acc.6,KThuc_So_Lech ; Neu lech lon (A=4E -> ACC.6=1) -> Ket thuc
inc @r0 ; Neu lech nho (A=0 -> ACC.6=0)
mov a,@r0 ; (7Eh) -> A
jnz Xoa_A ; Neu a0 (tuc la (7Eh) FF) thi xoa A=0
X0ef8: mov r0,#Flags ; Neu ACC=0, tuc ban dau (7Eh)=FF
mov a,@r0 ; Dua (Flags) - >A
orl a,#8 ; Bat bit thu 3 trong 2 t/hop: ACC.5=1
mov @r0,a ; Tan so < 22 Hz (Chu ky = 44 ms)
Xoa_A:
clr a
KThuc_So_Lech:
ret
;==========================================================================
X0c00: mov a,r6 ; A=0dxn.0D0N -> N=1 Hoa dien
jb Acc.0,X0c0b ; Neu Hoa
X0e17: mov r4,#28h
call Add_3F3E_E0C0 ; Cong gia tri 2 byte (3Fh.3Eh) voi E0C0h
jb Acc.7,X0e1f ; Neu (3F.3E) khi cong voi E0C0h bit 7 bang 1
mov r4,#3ch ; f<= 50 Hz R4=28h
X0e1f: nop ; ret f> 50 R4= 3Ch
X0cf3: mov r0,#3eh
mov r1,#3ch
call SubR0_R1 ; Gia tri hien tai - Gia tri truoc do
mov a,r2
add a,r4
mov a,r3
addc a,#0 ; (R3.R2) + R4
jb Acc.7,X0c0b ; bit 7 = 1 -> Delta F < +0,2 Hz
mov r0,#7ah
mov @r0,#4
X0c0b: ;call Flags2ACC
mov r0,#Flags
mov a,@r0
jb Acc.7,X0c16
mov r6,#70h ; R6=0111.0000 Dieu tan-mod1-doclap (Flags.7=0)
mov r0,#68h
nop
X0c16: nop
X0630: mov a,r6
anl a,#61h ; A=0dx0.000N
xrl a,#20h ; A=0 khi d=0,x=1,N=0 (Luoi,khong HOA)
jnz X065f ; Neu khong phai (Luoi,mode1&2,khong HOA) thi ket thuc
mov r2,#65h
mov r3,#0e1h
mov a,r6
jb Acc.4,X0640 ; Mode1 R3R2=E165 - 1E9B: 51 Hz
mov r2,#0fch ; Neu mode 2 R3R2=E10F - 1EF1: 52 Hz
X0640: call R3R2_Add_3F3E
jb Acc.7,X0656
mov r2,#50h ; Neu tan so nho hon
mov r3,#0e0h
mov a,r6
jb Acc.4,X064e ; thi neu mode 2 R3R2=E050 -1FB0:49 Hz
mov r2,#72h ; Mode 1 R3R2=DF72 - 208E:48 Hz
dec r3
X064e: call R3R2_Add_3F3E
jb Acc.7,X065f
mov r0,#2ah ; Neu Tan so nho hon
mov @r0,#3 ; (2Ah)=3
X0656: mov r6,#30h ; R6=0011.0000 (Luoi-Mode1-Normal)
mov r0,#69h
mov @r0,#1 ; (69h)=1
inc r0
mov @r0,#1 ; (6Ah)=1
X065f: ;sel mb1
B¸o c¸o khoa häc §Ò tµi KC07- 04
89
;ret
mov a,r6
jb Acc.0, X0c2c
jb Acc.6, X0c45
call Giam2Dh ; X0b85
xrl a,#8
jnz X0c35
mov r0,#68h
mov @r0,#1
mov r0,#7ah
mov @r0,#1
X0c2c: mov r0,#68h
mov a,@r0
add a,#0fbh
jnc X0c35
mov @r0,#4
X0c35: mov r0,#69h
mov a,#1
nop
mov @r0,a
inc r0 ; 6Ah
mov @r0,a
mov r0,#7bh ; 7Bh
mov @r0,a
inc r0 ; 7Ch
mov @r0,a
X0e47: ;call X0e47
inc r0 ; 7Dh
mov @r0,a
mov r0,#2ah
mov a,@r0
dec a
jnz X0e53
mov r0,#2dh
mov @r0,#1
X0e53: ret ; End X0C00
;=======================================================================
; Doc ROM khi o che do doc lap
;=======================================================================
X0c45: swap a ; A=R6 -> A=0D0N0dxn
anl a,#7 ; A=00000dxn
orl a,#38h ; A=00111dxn =3D - 3F
mov dptr,#ROM_DB ; Doc ROM tu 3Dh,3Eh,3Fh
movc a,@a+dptr
mov r2,a
mov r0,#7dh
mov r3,#3
X0c50: mov a,r2
add a,@r0
jnc X0c57
mov @r0,#4
X0c57: dec r0
djnz r3,X0c50 ; Thuc hien 3 lan
ret
;==================================================================
Tinh_Tan_So:
mov r0,#3eh
mov r1,#48h ; Doi so dem tu 3F3E thanh Gia tri tan so * 100
call Chuky2TanSo ; Nap vao 49h.48h
mov a,r6
jb Acc.0,X0a9f ; Neu khong hoa thi ket thuc
mov r0,#5eh ; Neu hoa, tinh hieu tan so
mov r1,#4ah
call Chuky2TanSo ; Doi so dem tu 5F5E thanh gia tri tan so * 100
mov r0,#48h
mov r1,#4ah
call SubR0_R1 ; Hieu 2 tan so
B¸o c¸o khoa häc §Ò tµi KC07- 04
90
call Cpl2Nor ; Doi sang dang binh thuong
mov r0,#42h
call NapR3R2ToR0 ; Nap gia tri hieu tan so vao 43h.42h (bit 16 chi dau)
X0a9f: ret ; End TinhTanSo
;==========================================================================
Chuky2TanSo:
mov r2,#5ah
mov r3,#62h
mov r4,#2 ; Chu y : 2625A00h=40000000=1/0,000000025
mov r7,#18h
X0bdd: ;call X0bdd
;ret
mov r5,#0
;========================================================
CplR0_To_R1: ;call CplR0_To_R1
mov a,@r0
cpl a
add a,#1
mov @r1,a
inc r0
inc r1
mov a,@r0
cpl a
addc a,#0
mov @r1,a
dec r0
dec r1
;ret
X0be1: clr c
mov a,r2
rlc a
mov r2,a
mov a,r3
rlc a
mov r3,a
mov a,r4
rlc a
mov r4,a
mov a,r5
rlc a
mov r5,a
;========================================================
R5R4_Add_R1: ; call R5R4_Add_R1
mov a,@r1
add a,r4
mov r4,a
inc r1
mov a,@r1
addc a,r5
mov r5,a
;ret
dec r1
inc r2
jc X0bf8
dec r2
;========================================================
R5R4_Add_R0: ; call R5R4_Add_R0
mov a,@r0
add a,r4
mov r4,a
inc r0
mov a,@r0
addc a,r5
B¸o c¸o khoa häc §Ò tµi KC07- 04
91
mov r5,a
;ret
dec r0
X0bf8: djnz r7,X0be1
mov a,r2
mov @r1,a
inc r1
mov a,r3
mov @r1,a
ret ; End TinhTanSo
;=======================================================================
X0b7f_j:
jmp X0b7f
;=======================================================================
X0b00: mov a,r6
anl a,#7Fh ; Xoa bit 7
mov r6,a
mov r1,#44h
mov @r1,#3eh
inc r1
mov @r1,#1fh ; (45h.44h)=1F3Eh (50,01 Hz)
mov r0,#Flags
mov a,@r0
jb Acc.1,X0b65
jb Acc.7,X0b7f_j ; Ket thuc
mov @r1,#1dh
dec r1
mov @r1,#7ah ; (45h.44h)=1D7Ah ( 53 Hz)
mov r0,#5eh
call SubR0_R1 ; R3.R2=(5Fh.5Eh)-(45h.44h)
jb Acc.7,X0b37
mov r1,#45h
mov @r1,#23h
dec r1
mov @r1,#93h ; R5.R4=2393h (43,9 Hz)
mov r0,#5eh
call SubR0_R1 ; R3.R2=(5Fh.5Eh)-(45h.44h)
jb Acc.7,X0b37
mov r0,#5eh
call NapR3R2FromR0 ; R3.R2=(5Fh.5Eh)
mov r0,#44h
call NapR3R2ToR0 ; (45h.44h)=(5Fh.5Eh)
mov a,r6
orl a,#80h ; Bat bit 7
mov r6,a
X0b37: mov a,r6
mov r0,#SW12 ; Nap R6 -> SW12
mov @r0,a
jb Acc.0,X0b7f
mov r2,#40h
mov r3,#1fh
jb Acc.6,X0b55
mov r0,#2dh
mov a,@r0
dec a
jnz X0b4d
mov a,r6
jb Acc.2,X0b55
X0b4d: call Doc7Eh ; A=NOT(7Eh)
jnz X0b55
mov r2,#69h
mov r3,#1ch
X0b55: mov r0,#44h
call NapR3R2ToR0 ;(45h.44h)=1C69h (55Hz) hoac 1F40 (50Hz)
mov a,r6
jb Acc.6,X0b7f ;
B¸o c¸o khoa häc §Ò tµi KC07- 04
92
jb Acc.2,X0b7f
mov r0,#W_level
mov a,@r0
jb Acc.0,X0b7f
X0b65: mov r0,#44h
mov r2,#60h
mov r3,#0ffh
call Add_R2_R3
;==============================================================
CplR3R2: ;call CplR3R2 ; Lay so bu 2 cua (R3.R2)
mov a,r2
cpl a
add a,#1
mov r2,a
mov a,r3
cpl a
addc a,#0
mov r3,a
;ret
call R3R2_Add_3F3E
jb Acc.7, X0b7f
mov r2,#0c0h
mov r3,#1
mov r0,#3eh
call Add_R2_R3
mov r0,#44h
call NapR3R2ToR0
X0b7f: ret ; End X0B00
;==============================================================
ChuanBiHienThi:
X0F22: ;call X0F22 , vi dang mb1) ; Tien bo xung
mov a,r6 ; A=0dxn0D0N
jb Acc.5,X0f30
mov r0,#26h
call DecToOne ; X0e10
jnz X0f30
mov r0,#7bh
mov @r0,#1
X0f30: mov r0,#Flags
mov a,@r0
jb Acc.7,X0f3d
mov a,r6
jb Acc.6,X0f3d
mov r0,#2ah
mov @r0,#0ah
X0f3d: ;ret
mov r0,#42h ; Chua chenh lech tan so luoi va may phat
mov a,@r0
mov r2,a ; R2=(42h)
inc r0 ; R0 =43h
mov a,@r0
anl a,#7Fh
mov r3,a ; Xoa bit dau
jnz X0916 ; Neu 0
mov a,r2 ; Neu = 0 Kiem tra R2 co lon hon 2 khong
add a,#0fdh
jc X0916
mov r2,#0 ; Neu khong lon hon 4 -> Delta F < 0,02
mov @r0,#0 ; ->gan gia tri Delta F =0,00
X0916: mov a,r6
jb Acc.0,DoiHe ; N=1 HOA -> Hien thi chenh tan so (chi co 3 chu so)
mov r0,#48h ; Neu khong phai HOA -> Hien thi tan so may phat
call NapR3R2FromR0 ; R3.R2=(49h.48h) gia tri cua tan so may phat
mov a,r6 ; a=0dxn.0D0N
jb Acc.6,LamTron ; Chay doc lap d=1 -> Lam tron, hien thi 3 so
jb Acc.2,DoiHe ; Neu chay trong luoi & Dieu toc-> Hien thi 4 chu so
B¸o c¸o khoa häc §Ò tµi KC07- 04
93
LamTron:
mov a,r2 ; Neu trong luoi & W_L -> Lam tron so
add a,#5 ; + 5 vao so tan so may phat ( De lam tron)
mov r2,a
mov a,r3
addc a,#0
mov r3,a
DoiHe:
mov r0,#SoDonvi ;(SoDonvi=(4Dh)+10h (so co dau thap phan 310h-319h)
mov @r0,#10h
dec r0 ; R0=SoChuc (4Ch)
Chia1000:
mov a,r2 ; Cong R3.R2 + FC18h -> R3.R2
add a,#18h
mov r2,a
mov a,r3
addc a,#0fch ; FFFF-FC18=3E7h=999
mov r3,a
jnc Hoiphucsodu1 ; Neu R3.R2 < 1000 thi khi cong FC18 khong co Carry
inc @r0 ; Neu R3.R2 >= 1000, tang (So Chuc)
jmp Chia1000
Hoiphucsodu1:
inc r0 ; R0=SoDonvi(4Dh), Neu R3.R2 < 1000
mov a,r2 ; Cong R3.R2 +1000
nop
add a,#0e8h
mov r2,a
mov a,r3
addc a,#3
mov r3,a ; R3.R2 +1000 (3E8h) -> R3.R2
Chia100:
mov a,r2 ; Cong R3.R2 + FF9C -> R3.R2
add a,#9ch
mov r2,a
mov a,r3
addc a,#0ffh
mov r3,a
jnc Hoiphucsodu2 ; Neu R3.R2 < 100 thi khi cong voi FF9C khong co Carry
inc @r0 ; Neu R3.R2 >=100, tang (So Don vi)
jmp Chia100
Hoiphucsodu2:
inc r0 ; R0=4Eh=So phan Chuc, Neu R3.R2 < 100
mov a,r2
add a,#64h ; Cong Byte thap R2 + 100
Chia10:
add a,#0f6h
jnc Hoiphucsodu3 ; Neu R2 < 10 thi khi cong voi F6 khong co Carry
inc @r0 ; Neu R3.R2 >=10, tang (SophanChuc)
jmp Chia10
Hoiphucsodu3:
inc r0 ; R0=4Fh=So phan tram, ; Neu R2 < 10
add a,#0ah
mov @r0,a ; (50h)
;ret ; Quay ve DoiHe
mov a,r6 ; a=0dxn.0D0N
jb Acc.0,HienSoHoa ; Neu che do HOA N=1
call Hien3Chuso
jmp NapLED
HienSoHoa:
mov r0,#SoChuc ; Luc nay la Chuc cua Delta F
mov a,@r0
jnz XetDau ; Neu tri so hang chuc 0 -> DeltaF > 10,00 Hz
mov @r0,#1ah ; Neu Chuc = 0 -> 1Ah -> (SoChuc) -> tat LED4 (so chuc)
XetDau: mov r1,#43h ; Byte cao cua Delta F
mov a,@r1
jb Acc.7,NapLED ; Neu Delta F la so duong thi nap LED ngay
B¸o c¸o khoa häc §Ò tµi KC07- 04
94
mov a,@r0 ; Neu la so am, xet tiep Delta F Chuc xrl a,#1ah ;
(neu Chuc = 0 -> Chuc=1Ah(tat LED) -> (Chuc XOR jz DauTru ; Chuc = 0: Khong dich phai, hien
dau (-)o LED4
call DichPhaiSoHienThi ; Neu Chuc 0 Dich chuyen du lieu
DauTru: mov r0,#SoChuc ; SoChuc->SoDonvi->SophanChuc->SophanTram
mov @r0,#42h ; ROM(442h)=20h -> Hien dau tru (-) o vi tri LED4 (Chuc)
;===================================================================
NapLED: mov r0,#SoChuc
mov r1,#LED4
mov r2,#4
clr TR0
X0953: mov a,@r0 ; Nap cac gia tri (SoChuc),(SoDonvi),
mov @r1,a ; (SophanChuc),(SophanTram) vao LEDs
inc r0
inc r1
djnz r2,X0953
mov r0,#Count
mov a,@r0
jb Acc.0,X0970
mov r1,#Flags
mov a,@r1
jb Acc.7,X0970
jb Acc.1,X096a ; Neu bit Flags.7=1, xet bit 1=0 (binh thuong)
mov r0,#LED4 ; Bit 1=1 -> CloseCommand hien nua tren so 8 (blink)
mov @r0,#1bh ; ROM(31Bh)=72h=0111.0010=fgba -> Nua tren so 8
X096a: mov r0,#LED2 ; luc nay LED2 hien thi hang Donvi
mov a,@r0
anl a,#0fh ; Lay 4 bit duoi -> Xoa dau (.) thap phan
mov @r0,a
X0970: setb TR0 ; Khoi dong Timer de hien thi
ret ; End of ChuanBiHienThi
;=============================================================
DichPhaiSoHienThi:
mov r0,#SophanChuc
mov r1,#SophanTram
mov r2,#3
X0d76: mov a,@r0
mov @r1,a
dec r0
dec r1
djnz r2,X0d76
ret
;============================================================
Hien3Chuso: ;call Hien3Chuso neu khong phai che do HOA
mov r1,#SophanTram
jb Acc.2,HienWL
mov a,r6
jb Acc.6,X0f0c
call DichPhaiSoHienThi ; Dich chuyen du lieu hien thi 3 chu so
X0f0a: mov @r1,#1ah ; R1=So chuc khong hien
X0f0c: ret
;===========================================================
HienWL: mov r0,#Count
mov a,@r0
jb Acc.2,X0f0a
call Doc7Eh ; A=NOT(7Eh)
jz X0f1b
mov a,r6
jb Acc.6,X0f0a
X0f1b: mov r0,#W_level ; R0 = ul, Thap ul=11 -> 43h
mov a,@r0 ; Trung binh ul=10 -> 42h
orl a,#40h ; Cao ul=00 -> 40h
mov @r1,a ; Chuan bi LED1 the hien Water Level
ret ; Quay ve NapLED
;==========================================================================
X0a00: mov a,r6
B¸o c¸o khoa häc §Ò tµi KC07- 04
95
anl a,#5
jz X0a12 ; Neu Dieu tan
mov r0,#6ch
mov @r0,#4
inc r0
mov @r0,#4
inc r0
mov @r0,#1
inc r0
mov @r0,#1
X0a12: mov r0,#6fh
call DecToOne
jz X0a24
call Add_3F3E_E0C0 ; Cong gia tri 2 byte (3Fh.3Eh) voi E0C0h
jb Acc.7, X0a24 ; Neu Tanso > 50 Hz
mov r0,#6fh
mov @r0,#1
mov r0,#71h
call DecToOne
X0a24: mov r0,#6eh
call DecToOne
jz X0a37
call Add_3F3E_E0C0 ; Cong gia tri 2 byte (3Fh.3Eh) voi E0C0h
jb Acc.7,X0a37 ; Neu Tanso < 50 Hz
mov r0,#6eh
mov @r0,#1
mov r0,#70h
call DecToOne
X0a37: mov r2,#0a2h
mov r3,#0e0h
call R3R2_Add_3F3E ; So sanh voi 49,8 Hz
jb Acc.7,X0a47 ; Neu Tanso > 49,8 Hz
mov r2,#6fh
mov r3,#0e0h
call R3R2_Add_3F3E ; So sanh voi 49,4 Hz
jb Acc.7,X0a4b ; Neu Tanso > 49,4 Hz
X0a47: mov r0,#6ch
mov @r0,#3
X0a4b: mov r2,#0fh
mov r3,#0e1h
call R3R2_Add_3F3E ; So sanh voi 50,5 Hz
jb Acc.7,X0a5b ; Neu Tanso > 50,5 Hz
mov r2,#0deh
mov r3,#0e0h
call R3R2_Add_3F3E
jb Acc.7,X0a5f ; Neu Tanso > 50,2 Hz
X0a5b: mov r0,#6dh
mov @r0,#3
X0a5f: mov r2,#44h
mov r3,#0e3h
call R3R2_Add_3F3E
jb Acc.7,X0a6c ; Neu Tanso < 54,4 Hz
mov a,#8
call Change_Flags ; Bat bit 3 cua Flags
X0a6c: call Giam2Dh ; (X0b85)
jz X0a74
mov r0,#72h
mov @r0,#0ffh
X0a74: nop ;jmp X0800
X0800: ;call Flags2ACC
mov r0,#Flags
mov a,@r0
mov r1,#73h
jb Acc.1,X0809
mov @r1,#0ffh
B¸o c¸o khoa häc §Ò tµi KC07- 04
96
X0809: mov a,@r0 ; R0=Flags
jb Acc.7,X081b
call Doc7Eh ; A=NOT(7Eh)
jnz X081b
mov a,r6
jb Acc.6,X081b ; (Doc lap)
jb Acc.2,X082b ; Khong W_Level
mov @r1,#0ffh
dec r1
mov @r1,#0ffh
X081b: mov r0,#2dh
mov @r0,#1
mov r2,#90h
mov r3,#0e2h ; E290 - 1D70:53 Hz
call R3R2_Add_3F3E
jb Acc.7,X0829 ; Neu tan so > 53 Hz
jmp X0b9f ; Neu < 53 Hz
X0829: jmp X0b92
X082b: mov r2,#58h
mov r3,#0e1h ; E158 - 1EA8:51 Hz
call R3R2_Add_3F3E
jb Acc.7,X081b ; Neu tan so > 51 Hz
jmp X0b9f ; Neu > 51 Hz
X0b92:
mov r0,#Flags
mov a,@r0
jb Acc.4,X0b9f
dec r0 ; Theo X081B R0=2Dh -> R0= 2Ch
mov a,@r0
jnz X0b9f
mov a,#80h
call Change_Flags ; Bat bit 7 cua Flags
X0b9f: mov r4,#80h
call Doc7Eh ; A=NOT(7Eh)
jnz X0bb0
mov a,r6
jb Acc.6,X0bb0 ; Doc lap
jb Acc.0,X0bb0 ; hoa
mov r4,#1
jb Acc.2,X0bb7 ; Wlevel
mov r4,#0
X0bb0: mov r0,#50h
mov @r0,#2
inc r0
mov @r0,#2
X0bb7: ;call Flags2ACC
mov r0,#Flags
mov a,@r0
jb Acc.1,X0bcb
mov a,r4
jb Acc.0,X0bcb
jnz X0bc4
call Giam2Dh ; X0b85
jnz X0bcb
X0bc4: mov r1,#72h
call Load_AC_to_R1 ; Nap ACh vao @R1, neu @R1=FF
inc r1
call Load_AC_to_R1 ; Nap ACh vao @R1, neu @R1=FF
X0bcb: ret
;==========================================================================
Tinh_PD:
mov r0,#3eh
mov r1,#38h
mov a,r6
nop
jb Acc.0,X0aaa ; Neu hoa dien R1= 38h
mov r1,#30h ; Neu Khong phai che do hoa R1=30h
B¸o c¸o khoa häc §Ò tµi KC07- 04
97
X0aaa: call SubR0_R1 ; R2=(3Eh)-@R1 va R3=(3Fh)-@(R1+1)
mov r0,#62h
call NapR3R2ToR0 ; 63h.62h=3Fh.3Eh-39h.38h (Hoa)
mov a,r6 ; 63h.62h=3Fh.3Eh-31h.30h (Khong hoa)
jb Acc.0,X0ac4
mov r0,#5eh
mov r1,#58h
call SubR0_R1 ; R3.R2=(5Fh.5Eh)-(59h.58h)
mov r0,#46h
call NapR3R2ToR0 ; (47h.46h)=(5Fh.5Eh)-(59h.58h)
mov r0,#62h
mov r1,#46h
call SubR0_R1 ; R3,R2=(63h.62h)-(47h.46h)
X0ac4: mov r0,#40h
call NapR3R2ToR0 ; (41h.40h)=(63h.62h)-(47h.46h)
mov r0,#3eh
call NapR3R2FromR0 ; R3,R2=(3Fh.3Eh)
mov a,r6
mov r1,#6
jb Acc.0,X0add ; HOA R1=6
mov r1,#7 ; Khong HOA
jb Acc.5,X0add ; Mode 1,2 R1=7
nop
jb Acc.6,X0add ; Trong luoi
mov r1,#7 ; Doc lap R1=7
nop
nop
X0add: mov r0,#62h
call Add_R2_R3 ; R3.R2=R3.R2+(R0+1).R0
djnz r1,X0add
mov r0,#64h
call NapR3R2ToR0 ; (65h.64h)= ?
call X0d7d
mov r0,#64h
mov r1,#44h
call SubR0_R1 ; R3R2=(65h.64h)-(45h.44h)
mov r0,#66h
mov r1,#78h
mov a,r2
mov @r0,a
add a,#40h
mov @r1,a
inc r0
inc r1
mov a,r3
mov @r0,a
addc a,#1fh
mov @r1,a
ret ; End of Tinh_PD
;================================================================
X0d7d: mov a,r6
jb Acc.0,X0d90 ; Neu HOA (N=1) thi Ret
call Doc7Eh ; A=NOT(7Eh)
mov r0,#2ch
jnz X0d8e ; Neu A=NOT(7Eh) 0 -> (2Ch)=0
call DecToOne ; Neu a=0 tuc la (7Eh)=FF thi A=(2Ch)-1
jnz X0d90 ; Neu (2ch) 0 thi thoi
mov a,#10h ; Neu A=0 (Luc nay (2Ch)=1) -> A=10h
jmp Change_Flags ; Bat bit 4 cua Flags
X0d8e: mov @r0,#0
X0d90: ret
;=====================================================================
X0972:
mov r0,#Flags
mov a,@r0
anl a,#9bh ; And 1001.1011 ?
mov @r0,a ; Xoa bit 2,5,6 cua Flags (lien quan X0092)
B¸o c¸o khoa häc §Ò tµi KC07- 04
98
jb Acc.7,X097b
jb Acc.1,X09b2
X097b: mov a,r6
jb Acc.0,X0981 ; N=0 Khong phai HOA
jmp CheDoHOA ; Che do HOA
;
X0981: mov a,r6
jb Acc.6,X09a8 ; Chay doc lap
mov r2,#0fch
mov r3,#0e1h
X0eb7: jb Acc.2,X0ec6 ; call X0eb7
jb Acc.4,X0ec6
mov r2,#0a0h
mov r3,#0e3h
jb Acc.5,X0ec6
mov r2,#65h
mov r3,#0e1h
X0ec6: ;ret
call R3R2_Add_3F3E
jb Acc.7,X09a8 ; Neu Tan so may phat > cac gia tri tren thi X09a8
mov a,r6 ; Neu nho hon
jb Acc.2,X09b6 ; Neu che do W_Lwvel - X09b6
call Giam2Dh ; Neu khong phai W_Level
jnz X09b6
mov a,r6 ; Neu (2Dh)=0
jb Acc.5,X09a4 ; Neu mode 3
jb Acc.4,X09a4 ; Neu mode2
mov r2,#1dh ; Neu mode 1 R3R2=E01D - 49 Hz
mov r3,#0e0h
call R3R2_Add_3F3E
jb Acc.7,X09b6 ; Neu tan so < 49 Hz
X09a4: ;call X0cee ; Neu lon hon 4-> (7Ah)
X0cee: mov r0,#7ah
mov @r0,#4
;ret
jmp X09b6
X09a8: mov r2,#60h
mov r3,#0e0h
mov r4,#3ch
call X0f3e
jb Acc.7,X09b9
X09b2: mov a,#40h
call Change_Flags ; Bat bit 6 cua Flags
X09b6: ;call Flags2ACC
mov r0,#Flags
mov a,@r0
ret
;====================================================
X09b9: mov r2,#70h
mov r3,#0e2h
mov r4,#28h
call X0f3e
jb Acc.7,X09e1
mov r3,#0e5h
mov r2,#0fh
call R3R2_Add_6564
jb Acc.7,X09ce
X09ce:
mov r3,#0e4h
X0857: mov r2,#19h ; Tien bo sung - Phuc vu X09CE
mov a,r6
jb Acc.5,X085e ; Mode 1,2 R2=19h
mov r2,#0ffh ; mode 3 R2=FF
call R3R2_Add_3F3E
jb Acc.7,X09b6
;call X0d91
X0d91: mov r0,#34h
B¸o c¸o khoa häc §Ò tµi KC07- 04
99
mov r1,#32h
mov r5,#6
X0b8a: mov r4,#5
mov a,r6
jb Acc.5, X0b91
mov r4,#0ah
X0b91: nop ;ret
X09db: call X0da5
jb Acc.7,X09e3
djnz r5,X09db
X09e1: jmp X09b2
X09e3: mov r0,#34h
mov r1,#6
X09e7: mov r2,#0f5h
mov r3,#0e5h
call Add_R2_R3
inc r0
jb Acc.7,X09b6
djnz r1,X09e7
mov r0,#3eh
mov r1,#3ch
mov r4,#0f0h
call X0d9a
jb Acc.7,X09b2
X0c95: call Doc7Eh ; A=NOT(7Eh)
jnz X0cd5
mov a,r6
jb Acc.6,X0cd5
jb Acc.2,X0ca4
mov r0,#W_level
mov a,@r0
jb Acc.0,X0cd5
X0ca4: mov a,r6
swap a
anl a,#3
mov r2,a
rl a
add a,r2
mov r0,#OpenRate ; Open Rate
add a,@r0
add a,#0f7h
jc X0cb3
clr a
X0cb3: mov r0,#WL_Rate ; W_LRate
rl a
nop
mov @r0,a
mov r7,a
jz X0cd5
;call X0d91
mov r0,#34h
mov r1,#32h
mov r5,#6
;ret
X0cbd: mov a,#0d8h
call X0d98
jb Acc.7,X0cd9
djnz r5,X0cbd
mov r2,#8
mov r3,#0deh ; R3.R2=2270
X0cc9: call R3R2_Add_6564
jb Acc.7,X0cd5
mov r0,#Flags
mov a,@r0
jb Acc.7,X0cd5
B¸o c¸o khoa häc §Ò tµi KC07- 04
100
orl a,#20h
mov @r0,a
X0cd5: mov r0,#Flags
mov a,@r0
ret
;============================================================
X0cd9:
mov r0,#34h
mov r1,#32h
mov r5,#6
;ret
X0cdb: mov a,#0e6h
call X0d98
jb Acc.7,X0cd5
djnz r5,X0cdb
mov r2,#7dh
mov r3,#0dch
X0d98: add a,r7
mov r4,a
X0d9a: call SubR0_R1
inc r0
inc r1
mov a,r2 ; Cong 2 byte R3.R2 + R4
add a,r4
mov a,r3
addc a,#0ffh
ret
;==============================================================
X0da5: call SubR0_R1
inc r0
inc r1
mov a,r2 ; Cong 2 byte R3.R2 + R4
add a,r4 ; Sau do nghich dao gia tri
mov a,r3
addc a,#0
ret
;==============================================================
SubR0_R1:
mov a,@r1
cpl a
add a,#1
mov r2,a
inc r1
mov a,@r1
cpl a
addc a,#0
mov r3,a
call Add_R2_R3
ret
;==============================================================
Add_R2_R3:
mov a,@r0
add a,r2
mov r2,a
inc r0
mov a,@r0
addc a,r3
mov r3,a
ret
;==============================================================
Cpl2Nor:
mov a,r3 ; Dua R3 vao A,
cpl a ; Dao gia tri
jb Acc.7,X0de4 ; Neu bit 7=1 ( bit 7 cua R3=0) -> Gia tri 2 byte trong R2 (L)
; va R3 (H) la so duong (+) thi ket thuc
mov a,r2 ; Nguoc lai R2.R3 la so Am (-)
B¸o c¸o khoa häc §Ò tµi KC07- 04
101
cpl a
add a,#1
mov r2,a
mov a,r3
cpl a
addc a,#80h ; Tien hanh doi sang so duong, bat bit dau =1 (<0)
mov r3,a
X0de4: ret
;========================================================
NapR3R2ToR0: mov a,r2 ; R2=5Eh
mov @r0,a
inc r0
mov a,r3
mov @r0,a
ret
;========================================================
NapR3R2FromR0:
mov a,@r0
mov r2,a
inc r0
mov a,@r0
mov r3,a
ret
;==============================================================
R3R2_Add_6564:
mov r0,#64h
mov a,@r0
add a,r2
inc r0
mov a,@r0
addc a,r3
ret
;==============================================================
R3R2_Add_3F3E:
mov r0,#3eh
mov a,@r0
add a,r2
inc r0
mov a,@r0
addc a,r3
ret
;========================================================
DecToOne:
mov a,@r0 ; X0610
dec a
mov @r0,a
jnz DecEnd ;
inc @r0 ;
DecEnd: ret
;==================================================================
Load_AC_to_R1:
mov a,@r1
cpl a
jnz X0e45
mov @r1,#0ach
X0e45: ret
;==============================================================
Add_3F3E_E0C0:
mov r0,#3eh
mov a,@r0
add a,#0c0h
inc r0
mov a,@r0
addc a,#0e0h
ret
;=====================================================================
Doc7Eh: mov r0,#7eh
B¸o c¸o khoa häc §Ò tµi KC07- 04
102
mov a,@r0
cpl a
ret
;=================================================================
Giam2Dh:
mov r0,#2dh
mov a,@r0
dec a
ret
;==============================================================
Change_Flags:
mov r0,#Flags
orl a,@r0
mov @r0,a
ret
;=====================================================================
X0f3e:
call R3R2_Add_3F3E
jb Acc.7, X0f4f
mov r0,#3ah
mov r1,#38h
mov r5,#3
X0f49: call X0da5
jb Acc.7, X0f4f
djnz r5,X0f49 i
X0f4f: ret
;=====================================================================
; HOA DIEN
;=====================================================================
CheDoHOA: ;call Flags2ACC
mov r0,#Flags
mov a,@r0
nop
jb Acc.4,X0f5d
mov r0,#LED4 ; Neu bit 4 =1
mov @r0,#1fh ; ROM(31Fh)=53h=0101.0011=fbap - Dau cham hoi ?
clr a
ret
;===========================================================
X0f5d: mov r0,#2ah
mov @r0,#8
mov r0,#40h
call NapR3R2FromR0 ; R2=(40h), R3=(41h)
call Cpl2Nor ; Doi dang so bu sang Binh thuong
mov a,#0ceh
add a,r2
mov a,r3
addc a,#0ffh
jb Acc.6,X0f91
mov r0,#42h
call NapR3R2FromR0 ; R2=(42h), R3=(43h)
mov a,r2
add a,#0e8h
mov a,r3
addc a,#0ffh
jb Acc.6,X0f91
mov r0,#7ah
mov @r0,#4
mov r0,#77h
mov a,@r0
dec a
jnz X0f91
mov r4,#2
call So_Pha ; 0f8a ( R4=2 - Tre pha 1 ms)
jb Acc.5, X0f91
jnz X0f94 ; Ngoai bit 5, neu A 0 -> lech pha lon
call Doc7Eh ; Doc 7Eh, dao gia tri ; A=NOT(7Eh)
B¸o c¸o khoa häc §Ò tµi KC07- 04
103
X0f91: clr a
ret
X0f93: inc r4
X0f94: mov a,r4
add a,#0fbh ; (R4) + FBh=251
jc X0f91
call So_Pha ; Neu Carry=0 -> R4 <= 4, goi So_Pha
jb Acc.5,X0f91 ; Sau khi so pha, neu bit 5 =1 (???) -> Xoa ACC
jnz X0f93 ; Ngoai bit 5, neu A 0 -> lech pha lon, tang R4 cho toi 4
mov a,r4 ; Neu A=0, tuc la lech pha nho
add a,#0fch ; A= (R4) + (FCh=252)
jb Acc.7,X0fa6 ; Neu bit (A.7)=1, tuc la r4 < 4
mov r4,#3 ; Neu R4 >= 4, thi R4=3
X0fa6: dec r4
mov a,r4
dec a
nop
jnz X0f94
mov r4,#7
jmp HOA_DIEN
Chuan_Bi_Hoa:
mov r0,#2dh ; R0=2Dh
mov @r0,#0bh ; 0Bh=0000.1011 -> (2Dh)
mov a,r6 ; R6=0dxn.0D0N
jb Acc.6,Doc_Lap ; d=1 -> day do = 5v-> Che do chay doc lap
mov r0,#2ah ; Che do chay trong luoi
mov @r0,#6 ; 6 -> (2Ah) =0000.0110
Doc_Lap:
mov r0,#77h
mov @r0,#10h ; 10h -> (77h)
mov r0,#7eh
mov @r0,#0ffh ; FFh -> (7Eh)
;==========================================================
; Doc cong tac xac dinh co o vi tri HOA khong
;==========================================================
mov p1,#0ffh
nop
mov a,p1
jb Acc.0,Khong_Hoa ; Day Nau = 5 V -> Khong phai che do hoa dien
jb Acc.1,Khong_Hoa ; Sau khi dao, neu P4.1=1 -> Closedown
call So_Pha ; Con lai, chinh la HOA DIEN
jz HOA_DIEN ; Neu do lech pha nho
Khong_Hoa:
djnz r5,Chuan_Bi_Hoa ; Lap lai cho toi khi xay ra ngat Timer, chuong trinh se
mov r3,#9ch ; duoc re sang nhanh khac.
Ngat_Role2:
call Ngat_Role
djnz r2,Ngat_Role2
djnz r3,Ngat_Role2
clr a ; ACC=0
ret
;==================================================================
HOA_DIEN:
mov r1,#1dh
mov @r1,#0 ; 0 -> (1Dh), chuan bi cho lan goi So pha sau
mov LED4,#1Ch ; H
mov LED3,#0 ; O
mov LED2,#0Ah ; A
mov LED1,#1Dh ; !
mov r3,#8
DongMachHoa:
setb p3.1 ; Sync ON
clr p3.0
clr p2.4 ; Close OFF
setb p2.5
clr p2.6 ; Open OFF
B¸o c¸o khoa häc §Ò tµi KC07- 04
104
setb p2.7
clr p3.4 ; Over Speed OFF
setb p3.5
djnz r2,DongMachHoa
djnz r3,DongMachHoa ; Thuc hien Hoa R3 = 8 lan
djnz r4,HOA_DIEN ; (Truoc doan nay R4=7)
mov r4,#2 ;
mov r5,#2 ;
jmp Chuan_Bi_Hoa ; Kiem tra lai trang thai cong tac MODE
end
B¸o c¸o khoa häc §Ò tµi KC07- 04
105
PHỤ LỤC II
PHẦN MỀM ĐIỀU KHIỂN ĐIỀU TỐC ĐIỀU CHỈNH PHỤ TẢI
;***********************************************
;* Chuong trinh dieu chinh tan so luoi doc lap *
;* dung tai gia Dummy load *
;* Dung thuat toan dieu khien theo PI *
;**************** Byte Address *****************
frq_counter equ 50h
frq_counter1 equ 51h
frq_counter2 equ 52h
Err_frq equ 53h
Pre_alpha1 equ 54h
Pre_alpha2 equ 55h
delay_T equ 56h
Temp1 equ 57h
Temp2 equ 58h
Temp3 equ 59h
Kp equ 60h ; cac thong so bo dieu khien
Ki equ 61h
T equ 62h
Dload1_alp1 equ 66h ; Gia tri alpha tai 1
Dload1_alp2 equ 67h
Dload2_alp1 equ 68h ; Gia tri alpha tai 2
Dload2_alp2 equ 69h
Ketqua_PI equ 6Ah
Ketqua_P equ 6Bh
Ketqua_I equ 6Ch
TongSaiLech equ 6Dh
pulse_width1 equ 70h
pulse_width2 equ 71h
;**************** Bit Address ******************
F_level bit 20h
B¸o c¸o khoa häc §Ò tµi KC07- 04
106
F_edge bit 21h
F_open1 bit 22h
F_open2 bit 23h
F_level_ bit 24h
F_edge_ bit 25h
F_frq_c bit 26h
F_result bit 27h
Err_sign bit 28h
F_cut1 bit 29h
F_cut2 bit 2ah
SignTong bit 2bh
Sign_PI bit 2ch
;************************************************
ORG 0000h
ljmp MainProg
ORG 000bh
ljmp Isr_Timer0
ORG 001bh
ljmp Isr_Timer1
;************************************************
;Isr_Timer0: dem tan so ( Tan so ngat 0.125ms)
;************************************************
Isr_Timer0:
push psw
push acc
push dph
push dpl
jb P3.2,continue00
jb F_level,continue01
setb F_level
setb F_edge
mov frq_counter1,frq_counter
mov frq_counter,#00h
B¸o c¸o khoa häc §Ò tµi KC07- 04
107
jnb F_frq_c,continue01 ;
mov a,frq_counter1
jz continue01
clr F_frq_c
setb F_result
mov frq_counter2,frq_counter1
ajmp continue01
continue00:
clr F_level
continue01:
jnb F_edge,continue02
clr c
inc frq_counter
jnc continue02
mov frq_counter,#255
continue02:
jb F_cut1,continue04
mov a,frq_counter
clr c
subb a,Dload1_alp1
jnz continue03
setb F_open1
ajmp continue04
continue03:
mov a,frq_counter
clr c
subb a,Dload1_alp2
jnz continue04
setb F_open1
ajmp continue05
continue04:
jb F_cut2,continue06
mov a,frq_counter
clr c
subb a,Dload2_alp1
B¸o c¸o khoa häc §Ò tµi KC07- 04
108
jnz continue05
setb F_open2
ajmp continue06
continue05:
jb F_cut2,continue06
mov a,frq_counter
clr c
subb a,Dload2_alp2
jnz continue06
setb F_open2
continue06:
jnb F_open1,continue07
inc pulse_width1
clr c
mov P2.5,c
nop
mov a,pulse_width1
cjne a,#2,continue07
nop
setb c
mov P2.5,c
clr F_open1
mov pulse_width1,#00h
continue07:
jnb F_open2,Esc_Timer0
inc pulse_width2
clr c
mov P2.6,c
nop
mov a,pulse_width2
cjne a,#2,Esc_Timer0
nop
setb c
mov P2.6,c
clr F_open2
B¸o c¸o khoa häc §Ò tµi KC07- 04
109
mov pulse_width2,#00h
Esc_Timer0:
pop dpl
pop dph
pop acc
pop psw
reti
;================================================
;Isr_Timer1: chu ky do tan so ( thoi gian 20ms)
;================================================
Isr_Timer1:
mov TH1,#0B1h
mov TL1,#0DFh
push psw
push acc
push dph
push dpl
jnb F_result,delay_circ
clr F_result
mov a,frq_counter2
clr c
subb a,#160
jc con00
mov Err_frq,a
setb Err_sign
ajmp con01
con00:
mov a,#160
clr c
subb a,frq_counter2
mov Err_frq,a
clr Err_sign
con01:
lcall PI_controller
delay_circ:
B¸o c¸o khoa häc §Ò tµi KC07- 04
110
inc delay_T
mov a,delay_T
clr c
subb a,T
jnz Esc_Timer1
setb F_frq_c
mov delay_T,#00
Esc_Timer1:
pop dpl
pop dph
pop acc
pop psw
reti
;*************************************************************************
;PI_controller:
;*************************************************************************
PI_controller:
mov a, #16
clr c
subb a,Err_frq
jnc Err_adj
mov Err_frq,#16
ajmp PI_tinhtoan
Err_adj:
mov a,Err_frq
clr c
subb a,#01
jc Err_nho
jz Err_nho
ajmp PI_tinhtoan
Err_nho:
ajmp Ket_thuc
PI_tinhtoan:
B¸o c¸o khoa häc §Ò tµi KC07- 04
111
mov r5,Kp
mov a,#0
LapP:
add a,Err_frq
djnz r5,LapP
mov Ketqua_P,a
TinhTongSaiLech:
mov a,TongSaiLech
jb SignTong,TongDuong
jb Err_sign,Tru1
ajmp Cong1
TongDuong:
jnb Err_sign,Tru1
Cong1:
clr c
add a,Err_frq
mov TongSaiLech,a
clr c
subb a,#24
jc Tran1
ajmp ThanhPhan_I
Tran1:
mov TongSaiLech,#24
ajmp ThanhPhan_I
Tru1:
clr c
subb a,Err_frq
jc DoiDauTong
mov TongSaiLech,a
ajmp ThanhPhan_I
DoiDauTong:
mov a,Err_frq
subb a,TongSaiLech
mov TongSaiLech,a
cpl SignTong
B¸o c¸o khoa häc §Ò tµi KC07- 04
112
ThanhPhan_I:
mov r5,Ki
mov a,#0
LapI:
add a,TongSaiLech
djnz r5,LapI
mov Ketqua_I,a
TongPI:
mov a,Ketqua_P
jb Err_sign,TruP
CongP:
clr Sign_PI
jb SignTong,TruI
ajmp CongI
TruP:
setb Sign_PI
jnb SignTong,TruI
CongI:
clr c
add a,Ketqua_I
mov Ketqua_PI,a
ajmp DieuKhien
TruI:
clr c
subb a,Ketqua_I
jc Doidau
mov Ketqua_PI,a
ajmp DieuKhien
Doidau:
mov a,Ketqua_I
subb a,Ketqua_P
mov Ketqua_PI,a
cpl Sign_PI
DieuKhien:
B¸o c¸o khoa häc §Ò tµi KC07- 04
113
mov a,frq_counter2
mov Temp2,a
mov Temp1,a
mov a,Temp2
rrc a
mov Temp3,a
jb Err_sign,GiamTai2
TangTai1:
mov a,Pre_Alpha1
clr c
subb a,Ketqua_PI
jc MoHoanToan1
mov Pre_Alpha1,a
clr c
subb a,#03
jc MoHoanToan1
ajmp TangTai2
MoHoanToan1:
mov Pre_Alpha1,#3
TangTai2:
clr F_Cut2
mov a,Temp3
clr c
subb a,Pre_Alpha1
jc HetTangTai
mov a,Pre_Alpha2
clr c
subb a,Ketqua_PI
jc MoHoanToan2
mov Pre_Alpha2,a
clr c
subb a,#03
jc MoHoanToan2
ajmp Alpha_charge
B¸o c¸o khoa häc §Ò tµi KC07- 04
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HetTangTai:
mov Pre_Alpha2,Temp1
setb F_cut2
ajmp Alpha_charge
MoHoanToan2:
mov Pre_Alpha2,#3
ajmp Alpha_charge
GiamTai2:
clr F_cut2
mov a,Pre_Alpha2
clr c
add a,KetQua_PI
jc DongHoanToan2
mov Pre_Alpha2,a
clr c
subb a,Temp1
jnc DongHoanToan2
ajmp GiamTai1
DongHoanToan2:
mov Pre_Alpha2,Temp1
setb F_cut2
GiamTai1:
mov a,Pre_Alpha2
clr c
subb a,Temp3
jc Alpha_charge
mov a,Pre_Alpha1
clr c
add a,KetQua_PI
jc DongHoanToan1
mov Pre_Alpha1,a
clr c
B¸o c¸o khoa häc §Ò tµi KC07- 04
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subb a,Temp1
jnc DongHoanToan1
clr F_cut1
ajmp Alpha_charge
DongHoanToan1:
mov Pre_Alpha1,Temp1
setb F_cut1
Alpha_charge:
jb F_cut1,cont01
mov a,Pre_Alpha1
clr c
add a,temp2
mov Dload1_alp2,a
mov Dload1_alp1,Pre_Alpha1
cont01:
jb F_cut2,Ket_thuc
mov a,Pre_Alpha2
clr c
add a,temp2
mov Dload2_alp2,a
mov Dload2_alp1,Pre_Alpha2
ajmp Ket_thuc
Ket_thuc:
ret
;===============================================
;Doc_Sw:
;===============================================
Doc_Sw:
clr c
mov P3.6,c
mov P3.7,c
nop
nop
B¸o c¸o khoa häc §Ò tµi KC07- 04
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nop
nop
mov a,P1
cpl a
add a,#1
mov T,a
clr c
mov P3.6,c
setb c
mov P3.7,c
nop
nop
nop
nop
mov a,P1
cpl a
add a,#1
mov Kp,a
mov P0,a
setb c
mov P3.6,c
clr c
mov P3.7,c
nop
nop
nop
nop
mov a,P1
cpl a
mov Ki,a
ret
;***********************************************
; Main program
;***********************************************
MainProg:
mov P2,#0
setb c
mov P2.5,c ; Tat tat ca tai (Load-off)
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mov P2.6,c
mov P1,#0FFh
mov frq_counter,#00h ; Khoi tao cac bien
clr F_level ; Khoi tao cac flag
clr F_edge
clr F_result
setb F_cut1 ; Cam tai
setb F_cut2 ;
setb F_frq_c ; Cho phep do tan so
mov Pre_alpha1,#77
mov Pre_alpha2,#77
mov Dload1_alp1,#75
mov Dload1_alp2,#155
mov Dload2_alp1,#75
mov Dload2_alp2,#155
lcall Doc_sw
mov IE,#8Ah ; Khoi tao ngat Timer 0, Timer 1
mov TMOD,#12h
mov TH0,#131 ; Dinh timer0 0.125ms
mov TL0,#131
mov TH1,#0B1h ; Dinh timer1 20ms
mov TL1,#0DFh
setb PT0 ; Uu tien ngat Timer0
clr PT1
setb TR0
setb TR1
; Vong lap chuong trinh
Mainloop:
nop
ljmp Mainloop
End
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