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TRNG I HC CN THKHOA CNG NGHB MN IN T & VIN THNGBO COK THUT
VI X L CT141 N 1
Gio vin ging dy Tn v MSSV Trn Hu Danh Thi Minh Trung
B1204983
Cn Th, 01/03/2015
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TI
Thit k mch led hnh tri tim,gm 32 led,dng ic msp430f2013 v 74595
m rng.
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NI DUNGTrnh by tng.Thit k phn cng.Vit code cho IC. Nhn xt nh gi
kt qu, thun li v kh khn.
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I. Trnh by tng Dng MSP430 iu khin mch hin th gm 32 ledDng IC
74595 lm mch m rng ng raDng IC 74245 m in th t 3,3V sang 5VPhn cng
c chia lm 3 khi thc hin:
MCH IU KHIN
MCH M RNG NG RA
MCH HIN TH
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II. Thit k phn cng1.MCH IU KHIN (MSP430F2013 V 74HC245) MSP 430
l h vi iu khin cu trc RISC 16-bit c sn xut bi cng ty Texas
Instruments.MSP l ch vit tt ca MIXED SIGNAL MICROCONTROLLER. L dng
vi iu khin siu tit kim nng lng, s dng ngun thp, khong in p ngun cp
t 1.8V 3.6V,.
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II. Thit k phn cng1. MCH IU KHIN (MSP430F2013 V 74HC245)S dng 4
bt MSP430F2013Port 1.0 DATAPort 1.1 LATCH Port 1.2 CLEARPort 1.2
XUNG CKS chn ca msp430f2013
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II. Thit k phn cng1. MCH IU KHIN (MSP430F2013 V 74HC245)Do
MSP430 hot ng in th 3,3V nn cn phi dng 74245 m in th ln 5V trc khi
qua mch m rngChn 19: tch cc mc thp, cho php IC hot ng. Khi mc cao,
tt c cc chn ca 2 bus A v B trng thi cao tr hi-Z - Chn 1: iu hng xut
nhp I/O ca 2 bus A v B: + mc cao, vo A ra B.+ mc thp, vo B ra A.S
chn v bng s tht ca 74245
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II. Thit k phn cng2.MCH M RNG NG RA ( IC 74595)
IC 74595 l IC ghi dch hot ng khi:Chn s 13 (OE) mc thpChn s 11 ln
chn cp xung CkChn s 12 l chn chtChn s 10 l chn Clear:Clear = 0: ng
ra mc thp bt chp cc ng voClear = 1: Cho php dch d liu-Chn 14 l chn
d liu vo ni tip-Chn s 9 l chn m rng dung ni vi chn 14 ca IC k
tip.Chn 1 n chn 7 v chn 15 l ng ra d liu song song
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II. Thit k phn cng2.MCH M RNG NG RA ( IC 74595) s chn v bng s
tht ca ic 74595
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II. Thit k phn cng3.S NGUYN L CA MSP430F2013 VI 74595 Mch nguyn
l
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II. Thit k phn cng3. S NGUYN L CA MSP430F2013 VI 74595Mch in
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II. Thit k phn cng3.Mch hin th gm 32 ledMch hin th gm 32 led, cc
dng ni ngun, cc m ni vi chn ca msp430 S mch in.
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II. Thit k phn cng
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II. Thit k phn cng.
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II. Thit k phn cng
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II. Thit k phn cngKhi hin thGm 32 led n mc theo kiu ngun chung,
c th sp xp thnh khung hnh ty thch hin th hiu ng tt hn. y theo hnh
tri tim. Gm 4 mu: dng in tr 330 ohm, vng dng in tr 220 ohm, xanh l
cy v xanh da tri dng in tr 150 ohm.
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II. Thit k phn cngKhi m rngS dng 4 IC 74HC595 kt ni vi nhau nh
sau:
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III. Vit code cho IC#include "MSP430G2452.h"#define ck
BIT0#define data BIT1#define chot BIT2
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III. Vit code cho IC void tre75ms() {__delay_cycles(75000);}void
tre100ms() {__delay_cycles(100000);}void tre150ms()
{__delay_cycles(150000);}void tre200ms()
{__delay_cycles(200000);}void tre300ms()
{__delay_cycles(300000);}
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III. Vit code cho IC Chng trnh chnh:void main (void){ WDTCTL =
WDTPW +WDTHOLD; P1DIR = 0XFF; while(1){
sangchaylen();tatchaylen();tatchayxuong(); sangchaynguoc();
khuctatnguoc(); khucsangnguoc();khuctatnguoc();khucsangnguoc();
khucvongnguoc(); khucsangxuoi();khuctatxuoi();
khucsangxuoi();khuctatxuoi();khucvongxuoi();sangchayxuoi();tatchayxuoi();
sangphaitrai(); tatchayxuong();sangtraiphai();
tatchaylen();}}Code:hieu ung led de bao cao chinh thuc\hieu ung led
de bao cao\main.c
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IV. Nhn Xt & nh Gi Kt qu: Mch hot ng, th hin c cc hiu ng
nhng cha hon ton chnh xc. Thun li: Linh kin d tm kim trn th trng.
Tham kho mt s ti liu c sn. Kh khn:Khng c nhiu thi gian tm hiu v mch
v cc cch khc phc li khi mch mc phi. Mi hn cha chc chn v p.
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Chn thnh cm n s ch theo di ca thy v cc bn !
**
