GPIO Mini2440

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BGIO DC V O TO

TRNG I HC S PHM KTHUT HNG YN

V TIN T

TRIN KHAI HTHNG NHNG TRN FRIENDLY ARM

V NG DNG IU KHIN THIT B

N TT NGHIP I HC

HNG YN - 2014

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BGIO DC V O TO

TRNG I HC S PHM KTHUT HNG YN

V TIN T

TRIN KHAI HTHNG NHNG TRN FRIENDLY ARM V NG

DNG IU KHIN THIT B

NGNH: CNG NGHTHNG TIN

CHUYN NGNH: CNG NGHMY TNH

N TT NGHIP I HC

NGI HNG DN

ThS. PHM NGC HNG

HNG YN- 2014

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Trin khai hthng nhng trn Friendly Arm v ng dng iu khin thit b

3

MC LC

MC LC .......................................................................................................... 3

DANH SCH HNH V ................................................................................... 6

DANH SCH BNG BIU .............................................................................. 7

DANH SCH TVIT TT ........................................................................... 8

CHNG 1: TNG QUAN VTI ....................................................... 9

1.1 L do chn ti ................................................................................. 9

1.2 Mc tiu ca ti .............................................................................. 9

1.3 Gii hn v phm vi ca ti .......................................................... 10

1.4 Ni dung thc hin ............................................................................ 10

1.5 Phng php tip cn ........................................................................ 10

CHNG 2: CSL THUYT .............................................................. 11

2.1

KIT Friendly Arm Mini 2440 ............................................................ 11

2.1.1 a chbnh............................................................................... 12

2.1.2 Ngun cung cp ............................................................................ 13

2.1.3 RESET .......................................................................................... 13

2.1.4 SDRAM ........................................................................................ 14

2.1.5 FLASH .......................................................................................... 14

2.1.6 LED ............................................................................................... 14

2.1.7 Nt nhn ........................................................................................ 15

2.1.8 ADC .............................................................................................. 15

2.1.9 Ci PWM ...................................................................................... 16

2.1.10 EEPROM ...................................................................................... 16

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2.1.11 JTAG ............................................................................................. 16

2.1.12 Kt ni Ethernet ............................................................................ 17

2.1.13 UART ............................................................................................ 17

2.1.14 USB ............................................................................................... 18

2.1.15 LCD ............................................................................................... 18

2.1.16 Camera .......................................................................................... 18

2.1.17Ng vo ra m thanh ..................................................................... 19

2.1.18

ng BUS hthng .................................................................... 19

2.1.19 GPIO ............................................................................................. 19

2.2 Hiu hnh m ngun mLinux .................................................... 19

2.2.1 Linux l g? ................................................................................... 19

2.2.2 Linux u? ................................................................................. 21

2.2.3 Nhng c im ni bt ca Linux ............................................... 21

2.2.4 Hiu hnh nhng vi Linux ..................................................... 21

2.3 Qt Creator .......................................................................................... 25

2.3.1 Gii thu .............................................................................................. 25

2.3.2 Thit kdn bng Qt Creator chy trn KIT Friendly Arm mini2440

............................................................................................................................... 25

2.4 Truyn thng qua my tnh bng UDP(cng Ethernet)..................... 28

2.5 PC817 ................................................................................................ 29

2.6 R-le (relay) ...................................................................................... 30

2.6.1 nh ngh rle (relay) .................................................................. 30

2.6.2 Nguyn tc hot ng ................................................................... 30

CHNG 3: NI DUNG THC HIN ....................................................... 32

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3.1 Tng quan vhthng ...................................................................... 32

3.2 Trin khai cc hthng nhng .......................................................... 33

3.2.1 Build nhn Linux trn KIT Friendly Arm Mini 2440 ................... 33

3.2.2Ci t cc cng ccn thit cho KIT Friendly Arm Mini 2440 v

PC ...................................................................................................................... 35

3.2.3Lp trnh chng trnh iu khin trn PC giao tip vi Friendly

Arm ................................................................................................................... 41

3.2.4 Lp trnh chng trnh iu khin trn Friendly Arm mini2440 .. 44

3.2.5Lp trnh giao tip gia PC v Kit Friendly Arm mini2440 qua

Ethernet ............................................................................................................. 46

3.3 Thit kcc module ngoi vi ............................................................ 46

3.3.1 Thit kmodule iu khin rle .................................................. 46

3.3.2 Module r-le 4 knh ...................................................................... 47

3.3.3 Kt ni chn tn hiu ngoi vi ....................................................... 49

3.4 Trin khai thc nghim v nh gi .................................................. 49

CHNG 4: KT LUN ............................................................................. 50

4.1 Kt qut c ca ti ............................................................... 50

4.2 Hn chca ti ............................................................................. 50

4.3 Hng pht trin ca ti ............................................................... 50

TI LIU THAM KHO ................................................................................ 52

PHLC ......................................................................................................... 53

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DANH SCH HNH V

Hnh 2-1: KIT Friendly Arm Mini 2440 .......................................................... 11

Hnh 2-2: a chbnhKit Friendly Arm Mini 2440 ................................... 13

Hnh 2-3: Mch Reset KIT ............................................................................... 14

Hnh 2-4: ADC trn KIT ................................................................................. 15

Hnh 2-5: Ci PWM trn KIT ......................................................................... 16

Hnh 2-6: EEPROM trn KIT ......................................................................... 16

Hnh 2-7: JTAG ............................................................................................... 17

Hnh 2-8: UART .............................................................................................. 17

Hnh 2-9: LCD Interface ................................................................................. 18

Hnh 3-1: Tng quan vhthng ..................................................................... 32

Hnh 3-2: Giao din chng trnh minicom .................................................... 34

Hnh 3-3: Cu hnh minicom ........................................................................... 34

Hnh 3-4: Lm vic song song minicom v usbpush ...................................... 35

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DANH SCH BNG BIU

Bng 2-1: Chi tit LED trn KIT Friendly Arm Mini 2440 ............................. 14

Bng 2-2: Chi tit nt nhn trn KIT Friendly Arm Mini 2440 ....................... 15

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DANH SCH TVIT TT

Tvit tt Ty Gii thch

PC Personal Computer My tnh c nhn, my tnh in

t

ARM Advanced RISC Machine Mt loi cu trc vi xl 32-bit

kiu RISC c sdng rng

ri trong cc thit knhng.

GPIO General-purpose input/output Cng giao tip vi xl vi th

gii bn ngoi

UDP User Datagram Protocol Giao thc ca mng my tnh

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CHNG 1: TNG QUAN VTI

1.1 L do chn ti

Bt u t thkXX, nhn loi chng kin cuc cch mng khoa hc k

thut pht trin trn ton thgii. c trng v ni bt ca cuc cch mng ny l

k thut my tnh, cng nghthng tin v ng dng ca tng ha. Trong , vic

sdng thnh tu ca khoa hc cng nghthng tin vo thit k, chto tng

ha ng mt vai tr quan trng trong mi lnh vc ca cuc sng.

Trong nhng nm gn y, xu hng ca th gii l pht trin mnh cng

nghbn dn. Mt cu trc vi xl c thtch hp trn n nhiu cng logic c th

ng dng trong nhiu lnh vc. Ngy nay, ngnh cng nghip ch to phn cng

lun c nhng t ph khng ngng. Tcc mch in n gin n cc mch s,

mch tch hp,kin trc mch ngy mt trnn phc tp hn.

Cc h thng nhng c pht trin trn ARM ang c s dng rng ri

cho cc nghin cu, ng dng, v o to hin nay bi c tnh linh hot cho cc

thit k thit b trn ARM. Mt khc,ARM c htrrt nhiu cc thit bngoi

vi to iu kin thun li cho vic pht trin h thng nhng, pht trin cc ng

dng iu khin trn ARM kt ni vi cc thit bngoi vi.

c c bc u lm quen v nghin cu v cng ngh ARM t c th

nghin cu su hn v cng ngh nn Em chn ti nghin cu: Trin khai

h thng nhng trn FriendlyArm v iu khin thit b qua my tnh lm

ti tt nghip i hc ca mnh.

1.2 Mc tiu ca ti

Lm chhiu hnh Linux trn KIT FriendlyArm Mini 2440.

ng dng cng ngh trn KIT FriendlyArm Mini 2440 iu khin

thng minh.

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Lp trnh giao tip gia KIT FriendlyArm Mini 2440 v my tnh qua

cng Ethernet

Lp trnh ng dng nhng iu khin thit btrn Friendly Arm

ng dng bcng cm ngun mQt Everywhere Linux

Ghp ni hnhng PCFriendlyArmModule R-le iu khin thit

b

1.3 Gii hn v phm vi ca ti

- Tm hiu vlp trnh nhng trn hiu hnh m ngun mLinux.

- Tm hiu vlp trnh giao tip KIT Friendly ARM Mini 2440 vi PC.

- Lp trnh ng dng iu khin trn KIT Friendly ARM Mini 2440.

1.4 Ni dung thc hin

- Build nhn hiu hnh Linux trn KIT Friendly Arm Mini 2440.

- Lp trnh giao tip gia KIT Friendly Arm Mini 2440 v PC qua Ethernet.

- Xy dng module d-le iu khin thit b.

- Lp trnh ng dng nhng iu khin thit btrn Friendly Arm Mini 2440.

- Ghp ni PC vi KIT Friendly Arm Mini 2440 module R-le iu khin thit

b.

- Trin khai thnghim v nh gi kt qu.

1.5

Phng php tip cn

- Cch tip cn : Nghin cu cc k thut lp trnh trn cc nn tng cng ngh

khc nhau nh: ARM, PC,..

- Sdng cc phng php nghin cu:

- Phng php c ti liu.

- Phng php phn tch mu.

-

Phng php thc nghim.

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CHNG 2: C SL THUYT

Chng ny s trnh by c s l thuyt ca ti bao gm tng quan v

Friendly Arm, gii thiu phn mm, cng csdng trong ti, cc bc trin

khai hthng, truyn thng qua my tnh.

2.1 KIT Friendly Arm Mini 2440

Hnh 2-1: KI T F ri endly Arm M ini 2440

M tvKIT Friendly Arm Mini 2440:

- Kch thc: 100 x 100mm

- CPU: 400 MHz Samsung S3C2440A ARM920T (max freq. 533 MHz)

- RAM: 64 MB SDRAM, 32 bit Bus

- Flash: 64 MB / 128 MB / 256 MB / 1GB NAND Flash and 2 MB NOR Flash

with BIOS

- EEPROM: 1024 Byte (I2C)

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- B nh m rng: H tr th SD-Card

- Cng ni tip:01 cng kt ni chun RS232

- Cng giao tip USB: 01 cng chun A-USB, 01 cng chun B-USB

- Ng ra m thanh: 01 ng vi chun Jack Stereo 3.5mm

- Ng vo m thanh: 01

- Kt ni Ethernet: 01 cng vi chun dy RJ-45 10/100m (DM9000)

- H thi gian thc (RTC): h tr vi ngun pin i km

- Ci: 01 ci lm vic vi ch PWM

- Camera: cng kt ni 20 chn (2.0mm)

-

Mn hnh LCD: 3.5 inches h tr cm ng-

Nt nhn: 06 nt nhn

- LED: 04 led

-

Cng vi rng: 01 cng 40 chn, 01 cng 34 chn, 01 cng 10 chn (2.0mm)

-

Ngun in cung cp: 5V (Mini2440: 0.3 A, Mini2440 + 3.5" LCD: 0.6 A)

-

H iu hnh h tr: Linux, WinCE, Android

2.1.1

a chbnhBn pha tay tri l bnhNOR

Bn pha tay phi l bnhNAND

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Hnh 2-2: a chbnhKI T F riendly Arm M ini 2440

2.1.2 Ngun cung cp

Cn phi cp ngun in cho KIT l 5V.

cc chn mrng ca KIT c cung cp ngun in ra l 5V, 3.3V, 1.8V v

1.25V

2.1.3

RESET

Mch Reset sdng 1 IC MAX 811 v c cung cp chc nng reset ton b

KIT nt RST

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Hnh 2-3: Mch Reset KIT

2.1.4 SDRAM

C 2 chip 32MB (HY57V561620, 4Banks x 4MBit x 16bit) trn KIT.

a chvt l bt u t0x3000000

2.1.5 FLASH

C 2 loi b nh Flash trn KIT: 2MByte Nor Flash (SST39VF1601) v

64MByteNand Flash (K9F1208).

a chv rng:

Nor Flash: 16bit dliu + 20bit Bus a ch

Nand Flash: 8bit dliu / Bus a ch

2.1.6 LED

Bng 2-1: Chi tit LED trn KI T F ri endly Arm M ini 2440

LED GPIO Hm khc Tn trn s nguyn l

1 GPB5 nXDACK nLED_1

2 GPB6 nXRED nLED_1

3 GPB7 nXDACK1 nLED_1

4 GPB8 nXDRED1 nLED_1

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Cc Led ny c thp sng mc 0 khi xut dliu tKIT.

2.1.7 Nt nhn

Bng 2-2: Chi tit nt nhn trn KIT F ri endly Arm M ini 2440

Nt nhn GPIO Hm khc Tn trn s nguyn l / ngt

1 GPG0 -- EINT8

2 GPG3 nSS1 EINT11

3 GPG5 SPIMISO1 EINT13

4 GPG6 SPIMOSI1 EINT14

5 GPG7 SPICLK1 EINT15

6 GPG11 TCLK1 EINT19

Tn hiu nhn c l 0 khi nt nhn c bm.

2.1.8

ADC

C 4 knh ADC trn KIT v c mrng cng CON4.AIN0 c bin trvi chnh 10k km theo.

Hnh 2-4:ADC trn KI T

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2.1.9 Ci PWM

Ci ny c ni ti GPB0.

Hnh 2-5:Ci PWM trn KIT

2.1.10EEPROM

IC EEPROM 24C08 (1024byte) lm vic vi ch I2C: I2CSCL and

I2CSDA.

Hnh 2-6:EEPROM trn KI T

2.1.11JTAG

10 chn kt ni JTAG (2.0mm)

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Hnh 2-7:JTAG

2.1.12Kt ni Ethernet

KIT sdng chip Davicom DM900 htrkt ni Ethernet.

Mi board u c a chvt l l nh nhau. C thchnh sa li bng phn

mm BSP driver code trn Linux

2.1.13UART

C 3 cng ni tip l: CON1 (UART0), CON2 (UART1), CON3(UART2).

UART0 l cng truyn thng ni tip RS232COM0 (DB9Connector)

Hnh 2-8:UART

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2.1.14USB

C 2 cng htrkt ni USB theo chun A v chun B.

u ra vi chn bsung USB_EN (GPC5).

2.1.15LCD

KIT giao tip vi mn hnh LCD qua cng kt ni c 41 chn (0.5mm). Tt c

cc tn hiu hnh nh, dliu v cm bin cm ng u nm trong kt ni ny.

Jumper J2 chnh l ni kt ni vi mn hnh LCD, htrchai loi ngun l

5V v 3.3V.

Hnh 2-9:LCD I nter face

2.1.16Camera

KIT Friendly Arm Mini 2440 xy dng giao tip Camera Cmos, kt ni ti

CON20.

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Kt ni ny dng 20 chn (2.0mm).

2.1.17Ng vo ra m thanh

Bxl m thanh UDA1341 kt ni qua I2S. C mt ng ra v hai ng vo

m thanh.

Ng ra Stereo theo chun Jack cm 3.5mm

Ng vo m thanh dng microphone v ni tcng CON10chmn

2.1.18ng BUS hthng

Bus hthng cng kt ni CON5.Dng 40 chn (2.0mm)

2.1.19GPIO

Giao tip vo ra vt l cng kt ni CON4.

Dng 34 chn (2.0mm)

2.2

Hiu hnh m ngun mLinux

Linux ang thi im pht trin mnh. Tnh n nm 2013 th Linux ra

i c 22 nm, mt hiu hnh hon thin vi shtrcho mt lot cc m

hnh s dng. Nhng tht kh khi ngh rng Linux ch l mt h iu hnhn

ging nh mt con tc k hoa th ng hn. Nhn m un v tnh linh hot ca n

c thxl trong nhiu m hnh sdng (tsiu my tnh ln nht n cc thit b

nhng nhnht) n mc tht kh phn loi n vo bt cthg khc hn l mt

cng nghkhdng. Trong thc t, Linux l mt nn tng. N l mt cng ngh

then cht cho php to ra cc sn phm mi, m mt vi trong scc sn phm

mi chc gii thiu gn y.

2.2.1 Linux l g?

Nhn bngoi, Linux l mt hiu hnh.Linux gm c mt nhn kernel (m

ct li qun l cc ti nguyn phn cng v phn mm) v mt bsu tp cc ng

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dng ca ngi dng (chng hn nh cc th vin, cc trnh qun l ca sv cc

ng dng).

Hnh 2-10:L inux nhn bngoi

S trn chra cc thnh phn quan trng. Tng cui cng chnh l mt tphp m kin trc gip Linux c thhtra nn tng phn cng (ARM, PowerPC,

Tilera TILE v.v...). Tt nhin, chc nng ny c ng k theo giy php GNU,

to nn tnh di ng ca Linux.

Linux theo phong cch ring ca mnh trong lnh vc v tnh di ng . H

thng con ca trnh iu khin (l rt ln vkhnng ca n) htrng cc m

un c np m khng nh hng n hiu nng, to nn tnh m un (thm vomt nn tng ng hn). Linux cng bo mt mc nhn kernel (trong mt slc

) to nn mt nn tng bo mt Trong min hthng tp bn ngoi, Linux to nn

mt mng ln nht vhtrhthng tp ca bt khiu hnh no, nh l mt

v d, to nn tnh linh hot thng qua tnh m un thit k. Linux thc hin khng

chcc tnh nng ln lch trnh tiu chun m cn ln lch trnh thi gian thc bao

gm cc bo m vtrngt).

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Cui cng, Linux l m, c ngha l trn thc tbt cai cng c thxem v

ci thin da vo ngun gc ca n. Tnh mny cng gim thiu cc c hi bli

dng, to ra mt nn tng an ton hn. Nhiu cng ty ng gp cho Linux, bo m

rng n stip tc gii quyt mt lot cc m hnh sdng trong khi vn duy tr cc

c tnh ct li ca mnh.

By nguyn tc quan trng ny chc chn khng phi l cc thuc tnh duy

nht m Linux cung cp, nhng chng cho php Linux dng nh mt nn tng a

nng trn rt nhiu cc m hnh sdng. Hn na, Linux l nh nhau trn cc m

hnh sdng ny - khng chcc nguyn tc thit km cn bn thn m ca n

na. Ngi ta khng thni iu ny vcc hiu hnh khc (nh Windows

my tnh bn, my ch, hoc thit bnhnghoc Mac OS X hoc Apple iOS),

chng c phn khc dch vv m hnh sdng khc.

2.2.2 Linux u?

Vi khnng bin i nhanh v mrng quy m ca mnh, c th tm thy

Linux trong tt ccc phn khc my tnh (v thm ch mt sphn khc vn cha

c nh ngha y ). Phn ny xem xt mt scc phn khc in ton quan

trng, bao gm my tnh bn/netbook, my ch, cluster, my tnh ln

Mainframe, siu my tnh, thit bcm tay/my tnh bng, thit bnhng, o ha v

cc my thnghim.

2.2.3 Nhng c im ni bt ca Linux

- n nh cao.

-

Min ph.-

Minh bch v ty bin.

-

Ph hp vi mi cu hnh my.

-

Nh gn vi chc nng chuyn bit.

2.2.4 Hiu hnh nhng vi Linux

a) Cc thnh phn c bn:

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BootLoader:ng vai tr nh l BIOS trong my tnh ca bn.V

phn cng v ti nguyn hn hp nn n khng c nguynBIOS nh PC

m c ci sn trong BIOS, NAND hoc NOR Flash. N l chng

trnh s chy u tin khi khi ng (reset).N c nhim vLoad nh

ca nhn linux (kernel Linux Image) vo bnhv "pass" cc thng s

khi to tbootloader ti nhn Linux trn.

NOR flash: ging nh bnhBIOS ca PC.

NAND flash: ging nh cng PC. Hiu hnh v ng dng c

ci ln y.Cng c trng hp OS chy tSD card th cng ging nh

WINDOW lite hay LINUX lite chy trc tip tCD ROM m khng cn

ci vo my.

Kernel Linux Image: nhn Linux ca hthng nhng. N ging nh

tri tim, iiu phi ton bhot ng ca hthng.

Root File System: ging nh th mc cha d liu ca h thng

Window v cha ProgramFile cc chng trnh, ng dng ca hthng.

b)

Qu trnh khi to Kernel L inux (nhn L inux) vRoot F il e System

Qu trnh khi ng tri qua 2 bc:

- Uboot :

c boot ln u tin khi hthng khi ng:

+ Np nhn vo bnh.

+ Ly dliu Root File System tthnhhoc Nand Flash.

+ Khi to cc thng sbin mi trng,bootag, boot cmd,Root

File System Partition no, vv...Cc thng sny c a ti nhn

khi nhn c khi ng.ng thi n cng khi to cc ngoi vi

chun bcho Kernel Boot nh mmc,Ethernet,USB (optional).

- Kernel Boot:

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Ht nhn Linux sau chy "/ sbin / init", m xl phn cn li ca trnh

t khi ng (chng hn nh hin th mn hnh splash Screen v thanh tin

trnh).Trnh tny l nh nhau cho d cc thit bc khi ng tFlash hay t

thSD. Skhc bit l ht nhn linux c load nh thno, v nhng thit bno

c mount cha Root File System.

c) Nhng bin mi trng quan trng

- Autoload:nu t l "no" (hoc bt k chui bt u bng 'n'), cc lnh

rarpb, bootp or dhcp s ch thc hin cu hnh tra cu tBOOTP / DHCP

server, nhng khng cgng ti cc image bng cch sdng TFTP.

- Autostart:nu t l "yes", mt image c load bng cch sdng rarpb,

BOOTP, DHCP,tftp,disk, hoc lnh docb sc tng bt u (bng cch

gi ni blnh bootm).

- Baudrate:l 1 sthp phn xc nh tc baud ca truyn thng ni tip

gia uboot v dao din command line bng terminal ca Window hay

picocom trong Linux....hoc chng trnh truyn nhn COM khc.Mc nh

l baudrate 115200.

- Bootargs: Ni dung ca bin ny c truyn cho Linux Kernel nh cc i

s khi ng (hay cn gi l "Command line"). l 1 chui nhng cmd

uboot "bt" Kernel cn phi lm khi khi ng.

- Bootdelay: Sau khi thit lp bao nhiu th uboot schi by nhiu giy

trc khi n thc hin cc ni dung ca bin bootcmd. Trong thi gian m

ngc c xut ra dao din terminal,uboot c thbgin on bng cch

nhn phm bt k.Khi ny ta khng thc hin boot 1 cch tng (auto) na

m khi ng bng cmd line tcc command ca uboot #MINI2440. Thit

lp Bootdelay=-1 autoboot v hiu ha.Bootdelay=0 l khng cn delay khi

boot.

- Bootfile: tn ca file IMAGE mc nh ti bng TFTP.

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- Ethaddr: a chMAC Ethernet cho u tin / giao din ethernet ch(= eth0

trong Linux).Bin ny c thc t mt ln (thng l do nh sn xut t

). U-Boot tchi xa hay ghi ln bin ny mt ln khi n c thit

lp.

- Eth1addr: a chMAC cho giao din Ethernet thhai (= eth1 trong Linux).

- Eth2addr: a chMAC cho giao din Ethernet thba (= eth2 trong Linux).

-

Initrd_high: c sdng hn chvtr ca initrd ramdisk images. Nu

bin ny khng c thit lp, images initrd sc sao chp vo cc a ch

cao nht c thtrong bnhRAM, iu ny bn thng mong mun v n

cho php kch thc initrd ti a. Nu v mt sl do bn mun chc chn

rng images initrd c np di gii hn CFG_BOOTMAPSZ, bn c th

thit lp bin mi trng vi gi tr"no" hoc "off" hoc "0". Ngoi ra cng

c tht n vo mt a chtrn cng sdng (U-Boot vn skim tra

xem n khng ghi ln U-Boot stack v dliu).

- Ipaddr: a chIP cn thit cho lnh tftp.

- Loadaddr: a chload mc nh cho lnh nh tftp hoc loads.

- Loads_echo: Nu t l 1, tt c cc k t nhn c trong mt Series

download (dng lnh loads) c lp li(echo li).

- Pram:Nu tnh nng "bo v RAM" c kch hot trong cu hnh Board

MINI2440, bin ny c thc nh ngha cho php lu trvo "RAM

bo v".V dvng RAM m khng bghi bi U-Boot. nh ngha bin

ny gislng kB bn mun d trcho PRAM. Lu rng thng tin

cu trc ca Board ban vn shin th tng sdung lng ca RAM. Nu

PRAM c reserved(dnh ring), mt bin MT mi "mem" stng c

xc nh gislng RAM cn li dng m c thtruyn c nh

cc thng skhi ng ti Linux.

- Oserverip: TFTP server a chIP cn thit cho lnh tftp.

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- Serial #: cha thng tin nhn dng phn cng nh kiu: "string" , "/" hoc

"serial number". Bin ny c th c t mt ln (thng l do nh sn

xut). U-Boot t chi xa hay ghi ln bin ny mt Hass c thit

lp.

- Verify:Nu thit lp l "n" hoc "no" v hiu ha cc checksum kim tra.

- Dnsip: a chIP ca my chtn min ca bn.

-

Gatewayip: a chIP ca Gateway (Router) sdng.

- Hostname: Target hostname.

-

Netmask: Subnet Mask

- Rootpath:ng dn ca root filesystem trn my chNFS

- Filesize: kch thc tnh theo byte( dng sHEX) ca file Download ln

cui sdng bootp, dhcp, hay tftp command.

2.3 Qt Creator

2.3.1 Gii thu

Qt Creator l mt IDE rt c cc lp trnh vin ngy nay a chung sdng

c trn Linux v Windows. Hin nay cng ng Qt ngy cng ln mnh v gia

tng rt nhanh. Qt htrrt mnh trong lp trnh giao din, tng tc vi Database,

Graphics. c bit Qt cn htrlp trnh thit bdi ng vi nhiu nn tng nh

Android, WinCE, Linux, Mac .

2.3.2 Thit kdn bng Qt Creator chy trn KIT Friendly Arm mini2440

Giao din Start Page (nh hnh di) cho php:

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Hnh 2-11: Giao din Startpage ca Qt Creator

-

M Project mu (Choose an example)

-

Xem ti liu hng dn lp trnh (Tutorials)

-

M project c (Open Project)

-

To Project mi (Create Project).

Bc 1.Chn Create Project to mt dn mi:

Hnh 2-11: Giao din Creat Project ca Qt Creator

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Bc 2. Ti Form chnh thit kmt giao din c bn nh sau:

Hnh 2-12: Giao din DesignUI ca QtCreator

- Ko mt TextEdit v 2 Pushbutton, mt nt tn l Display, mt nt tn l

Clear.

-

Chut phi vo nt display, chn Go to slot ->>chn Clicked() -> OK-

Thm dng lnh sau cho s kin click ca pushbutton display:

ui->textEdit->setText(QString("Hello World!"));

-

Chut phi vo nt Clear, chn Go to slot ->> chn Clicked() ->> OK.

-

Thm dng lnh sau cho s kin click ca pushbutton Clear:

ui->textEdit->setText(QString(" "));

Bc 3. Build Project

Ch trong ca sBuild Settings, chn cu hnh bin dch qmake cho nn

tng Qt FriendlyArm (phin bn tng ng vi Qt Everywhere ci t)

- Chn Build/Build All. ng dng c build thnh cng, kt quc file

thc thi (trong th mc Project) schuyn ln KIT chy. V dny l file

HelloQt).

Bc 4.Np file thc thi ln KIT

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- Chuyn file thc thi va Build c xung KIT, v d file t ti

/ktmt/HelloQt

-

Ra lnh thc thi chng trnh trn KIT tdng lnh ( disable Qtopia trnKIT)

cd /ktmt

./HelloQt -qws

- Quan st ng dng demo c thc hin trn KIT, kim tra tnh nng

touchscreen.

2.4 Truyn thng qua my tnh bng UDP(cng Ethernet)

Vic lin kt gia my tnh v Friendly Arm rt quan trng m bo sn

nh cng nh tc , truyn v xl ta sdng cng Ethernet truyn dliu, c

thta sdng giao thc UDP cho n gin v dsdng.

UDP (User Datagram Protocol) l mt trong nhng giao thc ct li ca giao

thc TCP/IP. Dng UDP, chng trnh trn mng my tnh c thgi nhng dliu

ngn c gi l datagram ti my khc. UDP khng cung cp stin cy v tht

truyn nhn m TCP lm; cc gi dliu c thn khng ng ththoc bmt

m khng c thng bo. Tuy nhin UDP nhanh v hiu quhn i vi cc mc

tiu nh kch thc nhv yu cu kht khe vthi gian. Do bn cht khng trng

thi ca n nn n hu dng i vi vic trli cc truy vn nhvi slng ln

ngi yu cu.UDP dng cng cho php cc giao tip gia cc ng dng din ra.

-

Cng (port) :dng 16 bit nh a ch, v vy s ca cng nm trongkhon 0 n 65.535. Cng 0 c dnh v khng nn sdng. Cng t1

n 1023 c gi l cng "well-known" v trn cc hiu hnh ta Unix,

vic gn kt ti mt trong nhng cng ny i hi quyn root. Cng 1024

n 49.151 l cng ng k ,Cng t49.152 n 65.535 l cc cng tm,

c dng chyu bi client khi lin lc vi server.

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- Cu trc gi:UDP l giao thc hng thng ip nhnht ca tng giao vn

hin c m ttrong RFC 768 ca IETF.Trong bgiao thc TCP/IP, UDP

cung cp mt giao din rt n gin gia tng mng bn di (th d, IPv4)

v tng phin lm vic hoc tng ng dng pha trn.UDP khng m bo

cho cc tng pha trn thng ip c gi i v ngi gi cng khng c

trng thi thng ip UDP mt khi c gi (V l do ny i khi UDP

cn c gi l Unreliable Datagram Protocol).UDP chthm cc thng tin

multiplexing v giao dch. Cc loi thng tin tin cy cho vic truyn dliu

nu cn phi c xy dng cc tng cao hn.

Hnh 2-13:Cu trc gi dliu UDP

2.5 PC817

2.5.1 nh ngha

-PC 817 cngl dng opto n hot ng tng tnhcc opto khc.

- Khi cung cp 5V vao chn s1, LED pha trong Opto ni gia chn s1 v

2 sng, xy ra hiu ng quang in dn n 3-4 thng,mc logic sbchuyn t1

sang 0 m khng cn tc ng trc tip tIC
http://mualinhkien.vn/san-pham/204/pc817-5v-5ma-dip.htmlhttp://mualinhkien.vn/san-pham/204/pc817-5v-5ma-dip.html

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2.6 R-le (relay)

2.6.1 nh ngh r le (relay)

R le (relay) l mt cng tc chuyn i hot ng bng in. Ni l mt cng

tc v r le c 2 trng thi ON v OFF. R le trng thi ON hay OFF phthuc

vo c dng in chy qua r le hay khng.

2.6.2 Nguyn tc hot ng

Khi c dng in chy qua r le, dng in ny s chy qua cun dy bn

trong v to ra mt ttrng ht. Ttrng ht ny tc ng ln mt n by bn

trong lm ng hoc mcc tip im in v nh ths lm thay i trng thi

ca r le. Stip im in bthay i c thl 1 hoc nhiu, ty vo thit k.

R le c 2 mch c lp nhau ht ng. Mt mch l iu khin cun dy

ca r le: Cho dng chy qua cun dy hay khng, hay c ngha l iu khin r le

trng thi ON hay OFF. Mt mch iu khin dng in ta cn kim sot c qua

c r le hay khng da vo trng thi ON hay OFF ca r le.

Dng chy qua cun dy iu khin r le ON hay OFF thng vo khong

30mA vi in p 12V hoc c thln ti 100mA. V bn thy , hu ht cc con

chip u khng thcung cp dng ny, lc ny ta cn c mt BJT khuch i

dng nhng ra IC thnh dng ln hn phc vcho r le.

Ch :Tuy vy, IC 555 c dng in ng ra c thln ti 200mA, v thvi

IC 555 th khng cn mt BJT khuch i dng.

Cch hot ng ca r le vi cun dy v cc tip im in : khi c dngin chy qua cun dy, cun dy ht mt n by v lm mcc tip im in, v

thdng in cn kim sot khng thy i qua r le. V ngc li. Bn cng thy

, dng in chy qua cun dy khng hc lin quan g n dng in cn kim

sot.

Trn r le c 3 k hiu l: NO, NC v COM.

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+ COM (common): l chn chung, n lun c kt ni vi 1 trong 2 chn

cn li. Cn vic n kt ni chung vi chn no th phthuc vo trng thi hot

ng ca r le.

+ NC (NormallyClosed): Ngha l bnh thng n ng. Ngha l khi r le

trng thi OFF, chn COM sni vi chn ny.

+ NO (NormallyOpen): Khi r le trng thi ON (c dng chy qua cun

dy) th chn COM sc ni vi chn ny.

=> Kt ni COM v NC khi bn mun c dng in cn iu khin khi r le

trng thi OFF. V khi r le ON th dng ny bngt.

=> Ngc li th ni COM v NO.

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CHNG 3: NI DUNG THC HIN

3.1 Tng quan vhthng

Ton bsn phm ca n: Trin khai hthng nhng trn FriedlyArm v

iu khin thit bqua my tnh c coi nh mt hthng nhng hon chnh. Vi

cc thnh phn bao gm phn cng, phn mm nhng v chu trnh xl khp kn

ca n.

y l mt hthng nhng a nn tng, bao gm:

- My tnh c nhn ci h iu hnh Linux v b lp trnh nhng

Qtcreator.

- KIT Friendly Arm Mini 2440 vi vi xl li ARM vi hiu hnh v

phn mm nhng Linux.

- Module khuch i tn hiu gip module r-le v KIT Friendly Arm

Mini 2440 c thtng tc dliu vi nhau.

-

Module R-le iu khin thit bin.

Hnh 3-1: Tng quan vhthng

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3.2 Trin khai cc hthng nhng

3.2.1 Build nhn Linux trn KIT Friendly Arm Mini 2440

a)

Mc ch

Ci t hiu hnh nhng Linux 2.6.32.2 trn KIT FriendlyArm (mini2440

vi b vi x l Arm9). Thao tc tin hnh thc hin t my tnh ci t Linux

(Ubuntu).

b)

Chun b:

-

PC ci t Linux (Ubuntu) phin bn 11.10.

- BKIT FriendlyArm mini2440

- Cc file dliu snp ln KIT gm:

- Bootloader (BIOS qun l khi ng hthng khi cha c hiu

hnh): file supervivi-128M.

- Embedded Linux Image (Nhn hiu hnh Linux nhng c

bin dch): Chn file nh (image) tng thch vi mn hnh LCDm KIT sdng. (File zImage cho KIT sdng mn hnh X35).

- Root files system: File rootfs_qtopia_qt4 (H thng file v cc

ng dng nn tng qtopia).

c) Cc bc thc hin:

- Ci t phn mm phtrminicom v usbpush: trn my tnh Linux cn s

dng 2 phn mm iu khin giao tip chun RS232 v USB iu khinv truyn d liu vi KIT tng ng l minicom (iu khin) v usbpush

(truyn dliu).

$sudo apt-get install minicom

$sudo apt-get install usbpush

Ci t Linux:

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- Mphn mm minicom, giao din ca phn mm xut hin nh sau:

Hnh 3-2:Giao din chng trnh minicom

- Nhn thp phm Ctrl+A+Z sau nhn O vo chthit lp thng s

hot ng cho cng COM, trong v dny chng ti sdng cng COM vi

tn file thit b l /dev/ttyUSB0 v cu hnh l 115200, 8, n, 1, khng s

dng tn hiu bt tay phn cng (No Hardware Flow Control).

Hnh 3-3:Cu hnh mini com

- Sau khi thit lp thnh cng, lu cc thit lp li v bm nt Reset trn KIT,

nu kt ni thnh cng, trn mn hnh ng dng minicom s hin ra danh

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sch cc ty chn chng ta tin hnh ci t nh: format nand flash, ci

t supervivi, ci t kernel, ci t root file system ..

Hnh 3-4:Lm vic song song mini com vusbpush

-

Tin hnh mmt ca sTerminal th2 (Lnh tt Ctrl + Alt + T) mng

dng usbpush. Sau vi tng la chn vi minicom, y ln lt tng file

theo tht: vivi, kernel, root image vi ng dng USB push n KIT.

3.2.2 Ci t cc cng ccn thit cho KIT Friendly Arm Mini 2440 v PC

a)

Ci t trnh dch cho, TS-lib,QT-creator,QT-Everywhere trn PC

-

Ci t trnh dch choCi t arm-linux-gcc-4.3.2: bn thn vi x l ca my tnh c nhn

v vi x l ca KIT Friendly Arm Mini 2440 l hai vi x l c nn

tng v kin trc khc nhau. V vy, khng thsdng chung mt tp

lnh nh phn cho c hai c. Mun on code thc thi c lp

trnh trn my tnh c nhn c thhot ng c trn KIT, cn phi

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dng n trnh bin dch cho. Trnh bin dch cho ny c tc dng

chuyn i tp lnh nhphn c thhot ng c trn KIT.

o

Ti vcc ng dng btrcho host PC Linux:sudo apt-get install build-essential

sudo apt-get install make

sudo apt-get install ncurses

sudo apt-get install gcc

sudo apt-get install g++

sudo apt-get install libncurses5

sudo apt-get install libencueses5-dev

sudo apt-get install autoconf

sudo apt-get install libtool

sudo apt-get install zlib1g-dev

- Ci t TS-lib

KIT Friendly Arm Mini 2440 c mn hnh h trcm ng, v th trong vic

thit k, lp trnh ng dng cho KIT cn phi c bth vin chung gia my tnh c

nhn v KIT.

TS-lib l bth vin m ngun m. N cung cp cc stack, cc chc nng cho

vic giao tip, tng tc cm ng.

Cc bc ci t:

Trc ht cn ci t gi git-core nhm gip vic ly source ca tslib

t server cung cp.

Mterminal :

$ apt-get install git-core

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dqun l cc cng vic trong bi vit ny, th mc QtTut c

to lu trcc file c lin quan.

$ cd /

$ mkdir QtTut

vi 2 dng lnh trn chng ta to mt th mc QtTut, tin hnh ti

tslib:

$ cd /QtTut/

$ git clonehttp://github.com/kergoth/tslib.git

Sau khi ti thnh cng, config cho gi tslib:

$ cd /QtTut/tslib

$ ./autogen.sh

$./configure--host=arm-angstrom-linux-gnueabi

prefix=/usr/local/tslib --enable-static enable-shared

Ch rng host y c hiu l chng ta schy th vin ny trnnn phn cng ARM, prefix vi ng dn scha th mc tslib sau khi

c build,tin hnh build th vin tslib:

$ make

$ make install

-

QT-creator

QT-creator l nn tng xy dng cc ng dng chy c trn nhiu hiu

hnh. Phn ln cc ng dng c xy dng trn QT-creator u c giao din

ha, do vy n cn c coi l mt bcng c(widget toolkit).

Ban u QT-creator c ra i nh mt phin bn thng mi v c dng

to nn mi trng KDE, nhng vsau n c bsung giy php LGPL, theo

c thsdng n tdo to nn cc phn mm m ngun mhay c thto

nn cc phin bn thng mi nu mun. Bn quyn thng mi hin nay ca QT
http://github.com/kergoth/tslib.githttp://github.com/kergoth/tslib.githttp://github.com/kergoth/tslib.githttp://github.com/kergoth/tslib.git

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c chuyn sang hnh thc thu ph htr. C thsdng QT nh mt th vin

vit phn mm thng mi, nu c sa i no trong b ngun chnh ca QT th

chng ta phi cung cp m ngun sa ra chkhng yu cu phi mton bm

ngun mt cch cng khai hay phi mua giy php thng mi nh trc kia.

QT-creator l mt IDE rt c cc lp trnh vin a chung hin ny, QT h

trrt mnh trong vic lp trnh giao din, Database, Graphics

im ni bt ca QT bao gm:

Cross-platform, n c thhot ng trn mi hiu hnh, bao gm :

Mac, Linux, Windows. C text-editor cc k p.

Htrvim editor (vim editor l mt advance editor v c thlp trnh

c cc key, sdng hotkey rt nhanh).

Hon ton min ph.

ci t QT-creator, c thti trc tip trn ca hng ng dng ca Ubuntu.

Hnh 3-5:Giao din Qt Creator

-

QTeverywhere

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Bc 1. Chun b file nn gi ci t qt-everywhere-opensource-src-

4.7.2.tar.gz C th download t trang ch http://Qt-project.org (chn phin bn

thch hp), hoc copy trn my tnh. (ti th mc ngi dng $HOME)

Bc 2. Gii nn file ci t bng cch mca slnh, di chuyn n th mc

cha file ci t trn v tin hnh gii nn.Dng lnh:

gunzip qt-everywhere-opensource-src-4.7.2.tar.gz

tar xf qt-everywhere-opensource-src-4.7.2.tar

Kt qugii nn ra mt th mc cng tn file tar\

Bc 3: Cu hnh v bin dch gi ci t. Di chuyn vo th mc gii nn

cd qt-everywhere-opensource-src-4.7.2

Thm bin mi trng n ng dn trnh bin dch Qt (Mfile ~/.bashrc, thmbin mi trng $HOME/qt-everywhere-opensource-src-4.7.2). Sa file cu hnhbin dch qmake.conf cha ti $HOME/qt-everywhere-opensource-src-4.7.2/mkspecs/qws/linux-arm-g++/qmake.conf nh sau.

#

# qmake configuration for building with arm-linux-g++

#

include(../../common/g++.conf)

include(../../common/linux.conf)

include(../../common/qws.conf)

# modifications to g++.conf

QMAKE_CC = /opt/FriendlyARM/toolschain/4.4.3/bin/arm-none-

linux-gnueabi-gcc

QMAKE_CXX = /opt/FriendlyARM/toolschain/4.4.3/bin/arm-

none-linux-gnueabi-g++

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QMAKE_LINK = /opt/FriendlyARM/toolschain/4.4.3/bin/arm-

none-linux-gnueabi-g++

QMAKE_LINK_SHLIB =/opt/FriendlyARM/toolschain/4.4.3/bin/arm-none-linux-gnueabi-g++

# modifications to linux.conf

QMAKE_AR = /opt/FriendlyARM/toolschain/4.4.3/bin/arm-

none-linux-gnueabi-ar cqs

QMAKE_OBJCOPY =

/opt/FriendlyARM/toolschain/4.4.3/bin/arm-none-linux-gnueabi-objcopy

QMAKE_STRIP = /opt/FriendlyARM/toolschain/4.4.3/bin/arm-

none-linux-gnueabi-strip

QMAKE_INCDIR += /opt/tslib/include

QMAKE_LIBDIR += /opt/tslib/lib

load(qt_config)

(Ch : Trong file cu hnh trn sdng ng dn tuyt i gi cc trnh bindch cho c t /opt/FriendlyARM/toolschain/4.4.3/bin) sau , tin hnh cuhnh th vin Qt Everywhere 4.7.2 trc khi ci t (th mc ci t ra l /opt/qte)

$ cd

$ cd qt-everywhere-opensource-src-4.7.2

./configure --prefix=/opt/qte -embedded arm -xplatform qws/linux-

arm-g++ -qt-mouse-tslib -little-endian -no-qt3support -fast -no-largefile -

qt-sql-sqlite -nomake tools -nomake demos -nomake examples -no-webkit -

no-multimedia -no-javascript-jit

(Qu trnh cu hnh din ra mt thi gian), chn khi thng bo thnh cng. Tinhnh dch th vin:

$ make

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(Qu trnh make din ra ~hour phthuc vo cc option la chn khi configure trn). Trong trng hp tht bi (xut hin thng bo li), cn thc hin li: makeconfclean, cu hnh li vi option thch hp v make li (Ch : Sdng tham smake -j2 hoc -j4 i vi cc my c cpu li kp, li ttng tc bin dch,

cho php rt ngn ng kthi gian make). i qu trnh make thnh cng, g lnhci t:

$ sudo make install

i qu trnh ci t thnh cng, kim tra kt quci t ti /opt/qte nh cuhnh trn.

b) Ci t Qteverywhere cho kit

Th vin Qt Everywhere ci trn host Linux cho php bin dch ng dng Qt

chy trn KIT FriendlyArm. Tuy nhin, cn copy mt sfile th vin c bn, v

font xung KIT ng dng c ththc thi. Th vin Qt Everywhere (Libraries):

Copy ti thiu 3 file th vin sau (Copy qu nhiu stn bnh)

- LibQtCore.so.4

- LibQtGui.so.4

- LibQtNetwork.so.4

Trn KIT t vo th mc /opt/qte/lib (nu cha c cn to th mc ny, ging nh

th mc trn host).Fonts:Copy th mc fonts xung KIT cha /opt/qte/lib/fonts

Th vin tslib: Copy ton b th mc /opt/tslib trn host ( ci bc 2.2.1)

xung KIT ti th mc /opt/tslib

3.2.3

Lp trnh chng trnhiu khin trn PC giao tip vi Friendly Arm

-

Thut ton

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Hnh 3-6: Lu thut ton chng trnh iu khin trn PC

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Chng trnh sc chy trn PC ci hiu hnh linux giao tip vi KITFriednly Arm mini2440 thng qua cng Ethernet bng giao thc UDP

Khi nhn nt qut s1(pQso1) my tnh gi xung KIT Friednly Arm mini2440 k

t1

Khi nhn nt qut s2(pQso2) my tnh gi xung KIT Friednly Arm mini2440 kt2

Khi nhn nt qut s3(pQso3) my tnh gi xung KIT Friednly Arm mini2440 kt3

Khi nhn nt qut tt(pQtat) my tnh gi xung KIT Friednly Arm mini2440 k tS

Khi nhn nt n bt(pDBat) my tnh gi xung KIT Friednly Arm mini2440 ktB

Khi nhn nt n tt (pQDTat) my tnh gi xung KIT Friednly Arm mini2440 ktT

-

Giao din

Hnh 3-7: Giao din chng trnh iu khin trn PC

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3.2.4 Lp trnh chng trnhiu khin trn Friendly Arm mini2440

Phn mm sc nhim vnhn tn hiu iu khin tPC qua cng Ethernet

ri cho ra cc tn hiu iu khin qua cc cng gpio cc thit bin thng quamoulde iu khin v module r-le

- Thut ton

Hnh 3-8: Lu thut ton chng trnh iu khin trn K it F r iendly Arm

mini2440

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Khi nhn c cac tn hiu iu khin th chng trnh scho ra cc chn

iu khin gpio ca Kit Friendly Arm 2440 tn hiu iu khin tng ng.

-

Giao din chng trnh

Hnh 3-9: Giao din chng trnh iu khin trn KI T F riendly Arm

mini2440

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3.2.5 Lp trnh giao tip gia PC v Kit Friendly Arm mini2440 qua Ethernet

Hnh 3-10: Lu thut ton giao thc UDP

Giao thc UDP l giao thc n gin nh tuyn khng hng ni y ta sthit

lp :

+ PC l sever gi dliu vi ip localhost (127.0.0.1) qua cng 45454

+ Kit Friendly Arm mini 2440 l client vi ip ca broadcast (255.255.255.0)

nhn dliu tsever qua cng 45454

3.3 Thit kcc module ngoi vi

3.3.1 Thit kmodule iu khin r le

a) S nguyn l

Hnh 3-11: S

nguyn l modulei

u khin r le

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3.3.2 Module r-le 4 knh

a) S nguyn l

Hnh 3-12: S nguyn l Module Relay 4 knh

Module Relay sdng 6 u vo l Vcc, GND nui ngun, 4 u vo ENB

iu khin Module. PC 817 ng vai tr dung cch l gia hai khi in p

chnh lch. Relay ng vai tr l mt kho ng m, dng ng ct nhng ngun

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in p lp (12V-220V/10A). Trong Vcc v GND c ni vi 2 chn mrng

Vcc, GND ca KIT DE2. Bn u vo EN1,2,3,4 chnh l 4 tn hiu iu khin

ngoi vi: 3 tn hiu iu khin 3 sca qut v 1 tn hiu iu khin n.

b) Hnh nh thc t

Hnh nh Module Relay 4 knh 5V-220V/10A

Hnh 3-13: Relay 4 knh

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3.3.3 Kt ni chn tn hiu ngoi vi

Hnh 3-11: S chn tn hiu iu khin gio ca Kit Friendly Arm

mini2440

Hthng sdng cc chn CON2,9,13,17,21 ca Kit Friendly Arm mini 2440

iu khin cc thit bngoi vi vi chn s2 l chn ngun v 4 chn cn li l

chn tn hiu(3 tn hiu qut, 1 tn hiu ca n)

3.4 Trin khai thc nghim v nh gi

- Ghp ni PC vi Kit Friendly Arm v cc module iu khin

-

iu khin n qua my tnh

- iu khin qut qua my tnh

-

nh gi kt qu

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CHNG 4: KT LUN

4.1 Kt qut c ca ti

Sau thi gian nghin cu v pht trin bng snlc ca bn thn, cng vi

s hng dn nhit tnh ca thy Phm Ngc Hng. ti c hon thnh

ng thi hn v t c yu cu t ra l iu khin thit bqua my tnh nh

vo hthng nhng Friendly Arm mini2440. Trong qu trnh thc hin, tc gi

thu c nhng kt qusau:

Tm hiu vhiu hnh m ngun mLinux. Tm hiu c vhiu hnh

nhng m ngun m. Lm chhiu hnh Linux nhng trn KIT Friendly Arm

Mini 2440. Bin dch c nhn theo yu cu s dng ca h thng, ty bin h

iu hnh trn nn tng phn cng nhng nht nh.

Tm hiu, nghin cu vcng nghlp trnh iu khin trn hthng nhng

Lp trnh ng dng trn Linux nhng KIT Friendly Arm Mini 2440. Lp trnh

giao tip KIT Friendly Arm Mini 2440 vi my tnh v cc thit bngoi vi.

Ghp ni hnhng thc tvi thit bin. Vn dng cc k nng vk thut

in t, k thut c kh xy dng hthng nhng tng tc a nn tng.

Rn luyn ch, k nng ca bn thn trong qu trnh thc hin ti.

4.2 Hn chca ti

- Hthng c thnh thm mkhng cao.

-

Slng thit bin c thkt ni v iu khin cn hn ch.

4.3 Hng pht trin ca ti

Trong thi gian nghin cu v thc hin ti, tc gi vch ra c hng

pht trin tip theo ca ti nh sau:

Xy dng thm cc module iu khin cc thit b phc tp hn,

nhiu ty bin cho chng trnh nhng hn.

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Xl linh hot cc iu kin yu cu kh hn.

Ti u ha thut ton.

Nng cao tnh thm m v thun li vin tv c kh cho hthng.

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TI LIU THAM KHO

[1] V Huy Th, Gio trnh vi x l, Hng Yn: Khoa Cng ngh Thng tin -UTEHY, 2010.

[2] Jonathan W. Valvano, Embedded Systems: Real-Time Interfacing to ArmCortex(TM)-M Microcontrollers, United State: University of Texas, 2010.

[3]. Trnh Vn Loan, Gio trnh h thng nhng, Hng Yn: Khoa Cng nghThng tin - UTEHY, 2010

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PHLC

1. M chng trnh iu khin trn PC

#include "sendw.h"

#include "ui_sendw.h"

#include "QtNetwork"

sendw::sendw(QWidget *parent) :

QMainWindow(parent),

ui(new Ui::sendw)

{

ui->setupUi(this);

udp = new QUdpSocket(this);

}

sendw::~sendw()

{

delete ui;

}

void sendw::SendDatagram()

{

udp-

>writeDatagram(datagram,datagram.size(),QHostAddress::Broadcast,45454);

QString addr = QHostAddress(QHostAddress::Broadcast).toString();

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ui->label->setText(addr);

}

void sendw::on_pushButton_clicked()

{

datagram = QByteArray::number(1);

SendDatagram();

}

void sendw::on_pushButton_2_clicked()

{


SendDatagram();

}


{


SendDatagram();

}


{

datagram = "T";

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SendDatagram();

}


{

datagram = "B";

SendDatagram();

}


{

datagram ="S";

SendDatagram();

}

2. M chng trnh iu khin trn KIT Friendly Arm Mini 2440

#include "broadcast.h"

#include "ui_broadcast.h"

#include

#include

#include

#include

#include "QtNetwork"

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Broadcast::Broadcast(QWidget *parent) :

QMainWindow(parent),

ui(new Ui::Broadcast)

{

ui->setupUi(this);

//

udp = new QUdpSocket(this);

udp->bind(45454,QUdpSocket::ShareAddress);

//

system ("echo 160 > /sys/class/gpio/export");

system ("echo high > /sys/class/gpio/gpio160/direction");







//

connect(udp, SIGNAL(readyRead()),

this, SLOT(processPendingDatagrams()));

}

Broadcast::~Broadcast()

{

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delete ui;

}

//

void Broadcast::processPendingDatagrams()

{

while (udp->hasPendingDatagrams()) {

QByteArray datagram;

datagram.resize(udp->pendingDatagramSize());

udp->readDatagram(datagram.data(), datagram.size());

ui->label->setText(tr("\"%1\"").arg(datagram.data()));

if(datagram=="B")

{ on_pDen_On_clicked();

ui->label_2->setText("Turn On clicked");

}

if(datagram=="T")

{

on_pDen_Off_clicked();

ui->label_2->setText("Turn Off clicked");}

if(datagram=="1")

{

on_pQ_1_clicked();

ui->label_2->setText("Level1 clicked");}

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system ("echo low > /sys/class/gpio/gpio160/direction");

ui->pDen_On->setEnabled(false);

}

void Broadcast::on_pDen_Off_clicked()

{



ui->pDen_On->setEnabled(true);

}

void Broadcast::on_pQ_Off_clicked()

{







}

void Broadcast::on_pQ_1_clicked()

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{







}


{







}


{




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}

Date post:	02-Jun-2018
Category:	Documents
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GPIO Mini2440

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