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-   -   Code cho pic 16f877a-quét 8 Led đơn (http://www.picvietnam.com/forum/showthread.php?t=9312)

kenvinlam 13-05-2011 11:02 AM

Code cho pic 16f877a-quét 8 Led đơn
 
Em mới học về pic. Bác nào biết code quét 8 led đơn chạy đuổi nhau dùng MPLAB cho em xin được không! Em nghiên cứu hoài ma không ra.

kqha1025 14-05-2011 03:47 PM

Trích:

Nguyên văn bởi kenvinlam (Post 45021)
Em mới học về pic. Bác nào biết code quét 8 led đơn chạy đuổi nhau dùng MPLAB cho em xin được không! Em nghiên cứu hoài ma không ra.

Cái này đơn giản, mình nghĩ bạn nên tự làm như sau:
Bạn đọc file định nghĩa chân cẳng cho em pic mà bạn định dùng, sau đó bạn xem 1 ví dụ trong phần exsample của phần mềm ấy xem cấu trúc 1 chương trình như thế nào. Sau đó bạn tự code 1 ví dụ là chạy, đảm bảo bạn biết được nhiều thứ hơn đấy.
Chúc bạn thành công.

thanhute 15-05-2011 06:22 PM

bạn nên viết code rồi mô phỏng trên protues để thấy rõ ràng hơn, mới đầu học nên những bài như ded đơn bạn nên học thật kỹ để hiểu sâu về lập trình cho PIC sau đó bạn đi lên những ứng dụng cao hơn sẽ rất dễ dàng. Mình gửi cho bạn code theo yêu cầu của bạn, bạn hãy tham khảo nhé. Chúc bạn thành công.
Link dowload: http://www.mediafire.com/?vmd00u1k3a1s010

kenvinlam 21-05-2011 12:42 AM

Cam on cac anh nha! Nhung hinh nhu doan code tren co mot chut sai sot. Anh thanhute xem lai thu di

222222222 31-10-2011 02:32 PM

Trích:

Nguyên văn bởi kenvinlam (Post 45021)
Em mới học về pic. Bác nào biết code quét 8 led đơn chạy đuổi nhau dùng MPLAB cho em xin được không! Em nghiên cứu hoài ma không ra.


PROCESSOR P16F877A
INCLUDE <P16F877A.INC>
_CONFIG H'3F10'
ORG 0X0000
GOTO START
START BSF STATUS,5
CLRF TRISB
BCF STATUS,5
CLRF PORTB
LOOP MOVLW B'00000001'
MOVWF PORTB
CALL DELAY2
MOVLW B'00000010'
MOVWF PORTB
CALL DELAY2
MOVLW B'00000100'
MOVWF PORTB
CALL DELAY2
MOVLW B'00001000'
MOVWF PORTB
CALL DELAY2
MOVLW B'00010000'
MOVWF PORTB
CALL DELAY2
MOVLW B'00100000'
MOVWF PORTB
CALL DELAY2
MOVLW B'01000000'
MOVWF PORTB
CALL DELAY2
MOVLW B'10000000'
MOVWF PORTB
CALL DELAY2
GOTO LOOP
DELAY1 MOVLW .166
MOVLW 20H
LOOP1 DECFSZ 20H
GOTO LOOP1
RETURN
DELAY2 MOVLW .40
MOVWF 21H
LOOP2 CALL DELAY1
DECFSZ 21H
GOTO LOOP2
RETURN
END

ngoài ra bạn có thể dùng kĩ thuật bảng

hcmut.khoamaisi 03-11-2011 11:49 AM

Trích:

Nguyên văn bởi 222222222 (Post 51064)
PROCESSOR P16F877A
INCLUDE <P16F877A.INC>
_CONFIG H'3F10'
ORG 0X0000
GOTO START
START BSF STATUS,5
CLRF TRISB
BCF STATUS,5
CLRF PORTB
LOOP MOVLW B'00000001'
MOVWF PORTB
CALL DELAY2
MOVLW B'00000010'
MOVWF PORTB
CALL DELAY2
MOVLW B'00000100'
MOVWF PORTB
CALL DELAY2
MOVLW B'00001000'
MOVWF PORTB
CALL DELAY2
MOVLW B'00010000'
MOVWF PORTB
CALL DELAY2
MOVLW B'00100000'
MOVWF PORTB
CALL DELAY2
MOVLW B'01000000'
MOVWF PORTB
CALL DELAY2
MOVLW B'10000000'
MOVWF PORTB
CALL DELAY2
GOTO LOOP
DELAY1 MOVLW .166
MOVLW 20H
LOOP1 DECFSZ 20H
GOTO LOOP1
RETURN
DELAY2 MOVLW .40
MOVWF 21H
LOOP2 CALL DELAY1
DECFSZ 21H
GOTO LOOP2
RETURN
END

ngoài ra bạn có thể dùng kĩ thuật bảng

Bạn có sơ đồ mach lun không :D

ladykiller 21-11-2011 01:04 AM

chạy led đơn ở portb tích cực mức thấp tổng hợp 10 kiểu chạy, bạn có thể tham khảo
PROCESSOR 16F877A
#INCLUDE<P16F877A.INC>
DEM1 EQU 20H
DEM2 EQU 21H
__CONFIG _CP_OFF & _WDT_OFF & _BODEN_OFF & _PWRTE_ON & _XT_OSC & _WRT_OFF & _LVP_OFF & _CPD_OFF
ORG 0000H
BCF STATUS,6
BSF STATUS,5
CLRF TRISB
BCF STATUS,5
CLRF PORTB
MAIN
CHAY0
MOVLW B'01111111'
MOVWF PORTB
CALL DELAY
MOVLW B'10111111'
MOVWF PORTB
CALL DELAY
MOVLW B'11011111'
MOVWF PORTB
CALL DELAY
MOVLW B'11101111'
MOVWF PORTB
CALL DELAY
MOVLW B'11110111'
MOVWF PORTB
CALL DELAY
MOVLW B'11111011'
MOVWF PORTB
CALL DELAY
MOVLW B'11111101'
MOVWF PORTB
CALL DELAY
MOVLW B'11111101'
MOVWF PORTB
CALL DELAY
MOVLW B'11111110'
MOVWF PORTB
CALL DELAY
MOVLW B'11111101'
MOVWF PORTB
CALL DELAY
MOVLW B'11111011'
MOVWF PORTB
CALL DELAY
MOVLW B'11110111'
MOVWF PORTB
CALL DELAY
MOVLW B'11101111'
MOVWF PORTB
CALL DELAY
MOVLW B'11011111'
MOVWF PORTB
CALL DELAY
MOVLW B'10111111'
MOVWF PORTB
CALL DELAY
MOVLW B'01111111'
MOVWF PORTB
CALL DELAY
MOVLW B'10111111'
MOVWF PORTB
CALL DELAY
MOVLW B'11011111'
MOVWF PORTB
CALL DELAY
MOVLW B'11101111'
MOVWF PORTB
CALL DELAY
MOVLW B'11110111'
MOVWF PORTB
CALL DELAY
MOVLW B'11111011'
MOVWF PORTB
CALL DELAY
MOVLW B'11111101'
MOVWF PORTB
CALL DELAY
MOVLW B'11111101'
MOVWF PORTB
CALL DELAY
MOVLW B'11111110'
MOVWF PORTB
CALL DELAY
MOVLW B'11111101'
MOVWF PORTB
CALL DELAY
MOVLW B'11111011'
MOVWF PORTB
CALL DELAY
MOVLW B'11110111'
MOVWF PORTB
CALL DELAY
MOVLW B'11101111'
MOVWF PORTB
CALL DELAY
MOVLW B'11011111'
MOVWF PORTB
CALL DELAY
MOVLW B'10111111'
MOVWF PORTB
CALL DELAY

CHAY1
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY

MOVLW B'10000000'
MOVWF PORTB
CALL DELAY
MOVLW B'11000000'
MOVWF PORTB
CALL DELAY
MOVLW B'11100000'
MOVWF PORTB
CALL DELAY
MOVLW B'11110000'
MOVWF PORTB
CALL DELAY
MOVLW B'11111000'
MOVWF PORTB
CALL DELAY
MOVLW B'11111100'
MOVWF PORTB
CALL DELAY
MOVLW B'11111110'
MOVWF PORTB
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
MOVLW B'11111110'
MOVWF PORTB
CALL DELAY
MOVLW B'11111100'
MOVWF PORTB
CALL DELAY
MOVLW B'11111000'
MOVWF PORTB
CALL DELAY
MOVLW B'11110000'
MOVWF PORTB
CALL DELAY
MOVLW B'11100000'
MOVWF PORTB
CALL DELAY
MOVLW B'11000000'
MOVWF PORTB
CALL DELAY
MOVLW B'10000000'
MOVWF PORTB
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY
MOVLW B'10000000'
MOVWF PORTB
CALL DELAY
MOVLW B'11000000'
MOVWF PORTB
CALL DELAY
MOVLW B'11100000'
MOVWF PORTB
CALL DELAY
MOVLW B'11110000'
MOVWF PORTB
CALL DELAY
MOVLW B'11111000'
MOVWF PORTB
CALL DELAY
MOVLW B'11111100'
MOVWF PORTB
CALL DELAY
MOVLW B'11111110'
MOVWF PORTB
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
MOVLW B'11111110'
MOVWF PORTB
CALL DELAY
MOVLW B'11111100'
MOVWF PORTB
CALL DELAY
MOVLW B'11111000'
MOVWF PORTB
CALL DELAY
MOVLW B'11110000'
MOVWF PORTB
CALL DELAY
MOVLW B'11100000'
MOVWF PORTB
CALL DELAY
MOVLW B'11000000'
MOVWF PORTB
CALL DELAY
MOVLW B'10000000'
MOVWF PORTB
CALL DELAY

MOVLW B'00000000'
MOVWF PORTB
CALL DELAY
MOVLW B'00000001'
MOVWF PORTB
CALL DELAY
MOVLW B'00000011'
MOVWF PORTB
CALL DELAY
MOVLW B'00000111'
MOVWF PORTB
CALL DELAY
MOVLW B'00001111'
MOVWF PORTB
CALL DELAY
MOVLW B'00011111'
MOVWF PORTB
CALL DELAY
MOVLW B'00111111'
MOVWF PORTB
CALL DELAY
MOVLW B'01111111'
MOVWF PORTB
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
MOVLW B'01111111'
MOVWF PORTB
CALL DELAY
MOVLW B'00111111'
MOVWF PORTB
CALL DELAY
MOVLW B'00011111'
MOVWF PORTB
CALL DELAY
MOVLW B'00001111'
MOVWF PORTB
CALL DELAY
MOVLW B'00000111'
MOVWF PORTB
CALL DELAY
MOVLW B'00000011'
MOVWF PORTB
CALL DELAY
MOVLW B'00000001'
MOVWF PORTB
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY
MOVLW B'00000001'
MOVWF PORTB
CALL DELAY
MOVLW B'00000011'
MOVWF PORTB
CALL DELAY
MOVLW B'00000111'
MOVWF PORTB
CALL DELAY
MOVLW B'00001111'
MOVWF PORTB
CALL DELAY
MOVLW B'00011111'
MOVWF PORTB
CALL DELAY
MOVLW B'00111111'
MOVWF PORTB
CALL DELAY
MOVLW B'01111111'
MOVWF PORTB
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
MOVLW B'01111111'
MOVWF PORTB
CALL DELAY
MOVLW B'00111111'
MOVWF PORTB
CALL DELAY
MOVLW B'00011111'
MOVWF PORTB
CALL DELAY
MOVLW B'00001111'
MOVWF PORTB
CALL DELAY
MOVLW B'00000111'
MOVWF PORTB
CALL DELAY
MOVLW B'00000011'
MOVWF PORTB
CALL DELAY
MOVLW B'00000001'
MOVWF PORTB
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY


CHAY2


MOVLW B'10101010'
MOVWF PORTB
CALL DELAY
MOVLW B'01010101'
MOVWF PORTB
CALL DELAY
MOVLW B'10101010'
MOVWF PORTB
CALL DELAY
MOVLW B'01010101'
MOVWF PORTB
CALL DELAY
MOVLW B'10101010'
MOVWF PORTB
CALL DELAY
MOVLW B'01010101'
MOVWF PORTB
CALL DELAY
MOVLW B'10101010'
MOVWF PORTB
CALL DELAY
MOVLW B'01010101'
MOVWF PORTB
CALL DELAY
CHAY3

MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
CALL DELAY


CHAY4

MOVLW B'10000000'
MOVWF PORTB
CALL DELAY
MOVLW B'01000000'
MOVWF PORTB
CALL DELAY
MOVLW B'00100000'
MOVWF PORTB
CALL DELAY
MOVLW B'00010000'
MOVWF PORTB
CALL DELAY
MOVLW B'00001000'
MOVWF PORTB
CALL DELAY
MOVLW B'00000100'
MOVWF PORTB
CALL DELAY
MOVLW B'00000010'
MOVWF PORTB
CALL DELAY
MOVLW B'00000001'
MOVWF PORTB
CALL DELAY
MOVLW B'00000010'
MOVWF PORTB
CALL DELAY
MOVLW B'00000100'
MOVWF PORTB
CALL DELAY
MOVLW B'00001000'
MOVWF PORTB
CALL DELAY
MOVLW B'00010000'
MOVWF PORTB
CALL DELAY
MOVLW B'00100000'
MOVWF PORTB
CALL DELAY
MOVLW B'01000000'
MOVWF PORTB
CALL DELAY
MOVLW B'10000000'
MOVWF PORTB
CALL DELAY

CHAY5

MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'11100111'
MOVWF PORTB
CALL DELAY
MOVLW B'11000011'
MOVWF PORTB
CALL DELAY
MOVLW B'10000001'
MOVWF PORTB
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY
MOVLW B'10000001'
MOVWF PORTB
CALL DELAY
MOVLW B'11000011'
MOVWF PORTB
CALL DELAY
MOVLW B'11100111'
MOVWF PORTB
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
CALL DELAY

CHAY6

MOVLW B'01111110'
MOVWF PORTB
CALL DELAY
MOVLW B'00111100'
MOVWF PORTB
CALL DELAY
MOVLW B'00011000'
MOVWF PORTB
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY
MOVLW B'00011000'
MOVWF PORTB
CALL DELAY
MOVLW B'00111100'
MOVWF PORTB
CALL DELAY
MOVLW B'01111110'
MOVWF PORTB
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
CALL DELAY


CHAY7

MOVLW B'00111111'
MOVWF PORTB
CALL DELAY
MOVLW B'10011111'
MOVWF PORTB
CALL DELAY
MOVLW B'11001111'
MOVWF PORTB
CALL DELAY
MOVLW B'11100111'
MOVWF PORTB
CALL DELAY
MOVLW B'11110011'
MOVWF PORTB
CALL DELAY
MOVLW B'11111001'
MOVWF PORTB
CALL DELAY
MOVLW B'11111100'
MOVWF PORTB
CALL DELAY
MOVLW B'11111001'
MOVWF PORTB
CALL DELAY
MOVLW B'11110011'
MOVWF PORTB
CALL DELAY
MOVLW B'11100111'
MOVWF PORTB
CALL DELAY
MOVLW B'11001111'
MOVWF PORTB
CALL DELAY
MOVLW B'10011111'
MOVWF PORTB
CALL DELAY
MOVLW B'00111111'
MOVWF PORTB
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY

CHAY8
MOVLW B'01111111'
MOVWF PORTB
CALL DELAY
MOVLW B'10111111'
MOVWF PORTB
CALL DELAY
MOVLW B'11011111'
MOVWF PORTB
CALL DELAY
MOVLW B'11101111'
MOVWF PORTB
CALL DELAY
MOVLW B'11110111'
MOVWF PORTB
CALL DELAY
MOVLW B'11111011'
MOVWF PORTB
CALL DELAY
MOVLW B'11111101'
MOVWF PORTB
CALL DELAY
MOVLW B'11111101'
MOVWF PORTB
CALL DELAY
MOVLW B'11111110'
MOVWF PORTB
CALL DELAY


MOVLW B'01111110'
MOVWF PORTB
CALL DELAY
MOVLW B'10111110'
MOVWF PORTB
CALL DELAY
MOVLW B'11011110'
MOVWF PORTB
CALL DELAY
MOVLW B'11101110'
MOVWF PORTB
CALL DELAY
MOVLW B'11110110'
MOVWF PORTB
CALL DELAY
MOVLW B'11111010'
MOVWF PORTB
CALL DELAY
MOVLW B'11111100'
MOVWF PORTB
CALL DELAY

MOVLW B'01111100'
MOVWF PORTB
CALL DELAY
MOVLW B'10111100'
MOVWF PORTB
CALL DELAY
MOVLW B'11011100'
MOVWF PORTB
CALL DELAY
MOVLW B'11101100'
MOVWF PORTB
CALL DELAY
MOVLW B'11110100'
MOVWF PORTB
CALL DELAY
MOVLW B'11111000'
MOVWF PORTB
CALL DELAY

MOVLW B'01111000'
MOVWF PORTB
CALL DELAY
MOVLW B'10111000'
MOVWF PORTB
CALL DELAY
MOVLW B'11011000'
MOVWF PORTB
CALL DELAY
MOVLW B'11101000'
MOVWF PORTB
CALL DELAY
MOVLW B'11110000'
MOVWF PORTB
CALL DELAY


MOVLW B'01110000'
MOVWF PORTB
CALL DELAY
MOVLW B'10110000'
MOVWF PORTB
CALL DELAY
MOVLW B'11010000'
MOVWF PORTB
CALL DELAY
MOVLW B'11100000'
MOVWF PORTB
CALL DELAY

MOVLW B'01100000'
MOVWF PORTB
CALL DELAY
MOVLW B'10100000'
MOVWF PORTB
CALL DELAY
MOVLW B'11000000'
MOVWF PORTB
CALL DELAY

MOVLW B'01000000'
MOVWF PORTB
CALL DELAY
MOVLW B'10000000'
MOVWF PORTB
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY




CHAY9

MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY
CALL DELAY
MOVLW B'11111111'
MOVWF PORTB
CALL DELAY
CALL DELAY


GOTO MAIN
DELAY
MOVLW D'200'
MOVWF DEM1
LOOP
DECFSZ DEM1
GOTO LOOP1
GOTO THOAT
LOOP1
MOVLW D'250'
MOVWF DEM2
LOOP3
DECFSZ DEM2
GOTO LOOP3
GOTO LOOP
THOAT
NOP
RETURN
RETURN
END

ladykiller 21-11-2011 01:08 AM

eo ui post xong mới thấy chương trình mình dài quá @@ bạn thích sử dụng kiểu chạy nào thì cắt 1 đoạn đó thôi là được :)
chúc thành công

DunLop 29-02-2012 02:20 PM

bạn ơi, có thuật toán nào gọn hơn ko...kiểu này thì đơn giản, nhưng ông thầy mình kêu thi ko cho làm kiểu này, mình nghĩ mãi ko ra..
ví dụ như là cho 1 con led chạy từ 1 đến 8 rồi sáng tám
chạy tiếp từ đense 7 rồi sáng 7....cứ chạy đến khi sáng led thứ 1 rồi ngược lại.
nhưng ko dùng thuật toán chỉ mov như của bạn nhé..:D
bạn giúp mình với...thanks

ladykiller 11-03-2012 11:16 PM

he he gọn hơn thì dùng bảng ( hay mảng) ak, tại tưởng bạn mới tiếp cận nên dùng cái cơ bản :))

thongdtvtk7a 12-03-2012 12:48 AM

#include <16F877A.h>
void main()
{
int k,i,p,t;
Set_tris_b(0);
while(1){
//sang ,tat
{ output_b(0x00); delay_ms(300);
output_b(0xFF); delay_ms(300);
}
//chay tu trai qua phai
for(k=0x01;k<0x100;k<<=1)
{output_b(k); delay_ms(300);}
//chay tu phai qua trai
for(k=0x80;k>0;k>>=1){output_b(k); delay_ms(300);}
//chay tu giua ra ngoai
for(p=0x08,t=0x10;p>0;p>>=1){output_b(p|t);delay_m s(300); t<<=1; }
//chay tu giua vao trong
for(p=0x80,t=0x01;p>0;p>>=1){output_b(p|t);delay_m s(300); t<<=1; }
//chay sang dan tu phai qua trai va nguoc lai
k=0x00;
for(i=0x01;i<0x100;i<<=1){k=k+i; {output_b(k);delay_ms(300); }}
for(i=0x80;i>0;i<<=1);{k=k-i; {output_b(k);delay_ms(300);}}
}
}

ladykiller 13-03-2012 03:52 PM

Trích:

Nguyên văn bởi thongdtvtk7a (Post 54772)
#include <16F877A.h>
void main()
{
int k,i,p,t;
Set_tris_b(0);
while(1){
//sang ,tat
{ output_b(0x00); delay_ms(300);
output_b(0xFF); delay_ms(300);
}
//chay tu trai qua phai
for(k=0x01;k<0x100;k<<=1)
{output_b(k); delay_ms(300);}
//chay tu phai qua trai
for(k=0x80;k>0;k>>=1){output_b(k); delay_ms(300);}
//chay tu giua ra ngoai
for(p=0x08,t=0x10;p>0;p>>=1){output_b(p|t);delay_m s(300); t<<=1; }
//chay tu giua vao trong
for(p=0x80,t=0x01;p>0;p>>=1){output_b(p|t);delay_m s(300); t<<=1; }
//chay sang dan tu phai qua trai va nguoc lai
k=0x00;
for(i=0x01;i<0x100;i<<=1){k=k+i; {output_b(k);delay_ms(300); }}
for(i=0x80;i>0;i<<=1);{k=k-i; {output_b(k);delay_ms(300);}}
}
}

ở đây là MPASM dùng C thì bạn sang bên kia :))

lazy115 15-11-2012 08:09 PM

có thể dùng code ngắn hơn bằng lệnh RCF hay RRF

youaremylife 16-11-2012 03:01 AM

Dùng các hàm logic dịch quay vòng là xong thôi vừa gọn đẹp vừa tiết kiệm bộ nhớ

hoangminhac 18-12-2012 04:40 PM

mô phỏng bằng proteus như thế nào các bác nhỉ? muốn nạp cho con PIC16F877A hình như phải tạo đc 1 file .hex nhưng mình ko biết tạo bằng cách nào. mong các bác giúp cho nhé. thanks :X


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