3/2015

TRNG I HC BCH KHOA HQG-HCM CHNG TRNH K S CHT LNG CAO VIT PHP

Bo co bi tp thc hnh 1

MN HC: THIT K H THNG NHNG

Ging vin ging dy: TS. Trng Quang Vinh

Sinh vin thc hin: DNG NGUYN HONG SN 41102905

MN: THIT K H THNG NHNG BI TP 1 DNG NGUYN HONG SN MSSV: 41102905

MC LC

Bi 1: ............................................................................................................................................ 1

-To chng trnh m phng trn Proteus 7.1 .................................................................. 1

-Code chng trnh v gii thch ....................................................................................... 2

-Kt qu ............................................................................................................................. 3

Bi 2: ............................................................................................................................................ 4

-To chng trnh m phng trn Proteus 7.1 .................................................................. 4

-Code chng trnh v gii thch ....................................................................................... 4

-Kt qu ............................................................................................................................. 5

Bi 3: ............................................................................................................................................ 6

-To chng trnh m phng trn Proteus 7.1 .................................................................. 6

-Code chng trnh v gii thch ....................................................................................... 6

-Kt qu ............................................................................................................................. 7

Bi 4: ............................................................................................................................................ 8

-To chng trnh m phng trn Proteus 7.1 .................................................................. 8

-Code chng trnh v gii thch ....................................................................................... 8

-Kt qu ............................................................................................................................. 9

Kt qu v nhn xt....................................................................................................................... 9

MN: THIT K H THNG NHNG BI TP 1 DNG NGUYN HONG SN MSSV: 41102905

1

BO CO BI TP THC HNH 1

MN: THIT K H THNG NHNG

BI 1:

Design a PIC16F877A schematic and Simulate the program by Proteus in which:

- PIC16F877A Read ADC value and display on 4-digit 7-segment LED through Port D

- RE0 and RE1 are to select ADC chanel in RA1, RA0

To chng trnh m phng trn Proteus 7.1

MN: THIT K H THNG NHNG BI TP 1 DNG NGUYN HONG SN MSSV: 41102905

2

Trong

Linh kin Chc nng

RV0, RV1 Bin tr to mch chia p vo 2 chn analog A0 v A1 ng thi dung chn gi tr s hin th

SW1,R0,R1 Switch 3 chn cng 2 in tr R0,R1 ni vo to

mch iu khin 2 chn E0 v E1

Led 4-digit 7-segment (Common Cathode) Ly tn hiu t port D hin th s

Ly tn hiu t port B la chn n

Code chng trnh

MN: THIT K H THNG NHNG BI TP 1 DNG NGUYN HONG SN MSSV: 41102905

3

Gii thch:

- Hm led_display, nhn vo 1 s nguyn 1 bit, v hin s ny ln b led 7 on.

- Do 4 ch s trong b led ny dng chung cc ng vo iu khin nn ta thay i trng thi ng

ra 4 bit port B vi tc cao thay i ch s c chn lin tc hay ta gi gii thut qut

ch s.

- Hm main s c cc gi tr ca cc ng vo analog A0 hoc A1(2 kha cng tc trn switch c

k hiu R1 s iu khin A0, R0 s iu khin A1)

- Gi tr c c l 1 s 8 bit c gi tr t 0 n 255.Ta chuyn gi tr ny v gi tr thc theo n

v mV.

- Hin th gi tr ny ln b led 7 on.

Kt qu

Ln lt chn cng tc Switch v iu chnh bin tr tng ng hin th gi tr

Sw(R0)- iu chnh gi tr RV0 Sw(R1)- iu chnh gi tr RV1

MN: THIT K H THNG NHNG BI TP 1 DNG NGUYN HONG SN MSSV: 41102905

4

BI 2:

Write a C program to read 8-bit value from Port B, then add 5 to them and output the result to Port D.

Simulate the program by Proteus.

To chng trnh m phng trn Proteus 7.1

Trong :

Linh kin Chc nng DSW1 (DIPSW_8) switch dung ty chnh gi tr u vo

port B theo m nh phn

U2 (LED-BARGRAPH-RED) n led hin th gi tr u ra port D theo m nh phn

Code chng trnh

MN: THIT K H THNG NHNG BI TP 1 DNG NGUYN HONG SN MSSV: 41102905

5

Kt qu

Thit lp cc gi tr khc nhau port B, thc hin m phng ta thu c cc gi tr port D

Port B=00000001 (0x01); Port D=00000110 (0x06) Port B=00000101 (0x05); Port D=00001010 (0x0A)

Port B=00000011 (0x03); Port D=00001000 (0x08) Port B=00000111 (0x07); Port D=00001100 (0x0C)

MN: THIT K H THNG NHNG BI TP 1 DNG NGUYN HONG SN MSSV: 41102905

6

BI 3:

Write a C statement to convert numbers 0 to 9 to their ASCII hex code.

To chng trnh m phng trn Proteus 7.1

Trong :

Linh kin Chc nng DSW1 (DIPSW_8) switch dng ty chnh gi tr u vo

port B theo m nh phn (4 bit tch cc mc thp tng ng cho m BCD, 4bit trn lun tch cc mc cao )

U2 (LED-BARGRAPH-RED) n led hin th gi tr u ra port D theo m ASCII

Code chng trnh

MN: THIT K H THNG NHNG BI TP 1 DNG NGUYN HONG SN MSSV: 41102905

7

Kt qu

Thit lp cc gi tr khc nhau port B, thc hin m phng ta thu c cc gi tr port D

Port B=11110000 (BCD 0x00)

Port D=00110000 (0x30)

Port B=11110010 (BCD 0x02)

Port D=00110010 (0x30)

Port B=11110110 (BCD 0x06)

Port D=00110110 (0x36)

Port B=11110111 (BCD 0x07)

Port D=00110111 (0x36)

MN: THIT K H THNG NHNG BI TP 1 DNG NGUYN HONG SN MSSV: 41102905

8

BI 4:

Write a C program to create a chasing LED effect with 8 single LEDs at port D. Simulate the program

by Proteus.

To chng trnh m phng trn Proteus 7.1

Trong

Linh kin Chc nng

D1,D2,D3,D4,D5,D6,D7,D8 (LED-GREEN) 8 n led nhn trng thi t port D

R1,R2,R3,R4,R5,R6,R7,R8 in tr 220 Ohm

Code chng trnh:

MN: THIT K H THNG NHNG BI TP 1 DNG NGUYN HONG SN MSSV: 41102905

9

Kt qu

Thc hin m phng ta thu c 8 led chy ln lt

Kt qu v nhn xt

- Hon thnh yu cu m bi a ra.

- Bi tp hay c nhiu loi bi t kh n d sinh vin c th bc u tp lm quen vi mi

trng lp trnh nhng trn PIC bng ngn ng C.

- Khi tin hnh gp mt vi kh khn bi 1 do cha hiu bi v hng gii quyt.

- Cha tm c nhng li gii ti u cho cc bi tp.

- S hon thin v ti u cc code khi c kinh nghim qua cc bi tp.

Mc lcBi 1Bi 2Bi 3Bi 4