Download UART (Universal Asynchronous Receiver/Transmitter) Communication: A Comprehensive Guide - and more Lecture notes Computer Networks in PDF only on Docsity!
Lab-
Aim Studyqnd eplane about Univensal
Asynchomom0us Recei ves Tnansmitten (UART)
Contnollh. Desciphon Panallel (^) Comunication (^) implies (^) Sendins (^) mulhple.
lats$lmltemiausl ovea mdiple cines and Senial
Cammunicahon_impliesJ Sendingq data bit by bit
As Panallel cammuni.cahoncauses Synchaonizing 1SSes
we (^) uie (^) SenialCammunicahon that (^) helps to (^) nedue (^) cojt ONe langen distunte
iSSyes
The (^) Uniyensal (^) Asynchnonaus (^) Reteiven Tnansmities (^) a.k.a
uART Cantaallen is the key_paint of R232System
T's an integnaled Cincwi on mothen-boand used fon Senial communi.cahon Contains tndnimitte and heLeiyen. Cenalwloakinqof yAR PanallelLines of UARI usually connecled o buses ot Machine 1 When a machine CALikes data- byBes to
TDR,UART Stassthansmit. daBa to Senial line
Stadus aegistea use do indicalt uhethena dakuhas heen Stnt ecei ved by 0AR O not
Data (^) hus (^) been heceived by^ UARTia^ can^ be 9et tham^ statuy-flug^ In^ that^ Case^ amo^ the machine (^) can stant (^) neading fnom^ RDR tortnol signals Machine CPU
Addness Jines Datu lines
UART
Ri TL
As we knoo UART Wonks onAsynchnono us
Seni commumitaion
(tenenally Seaial communicahon has tuo pnimuy
fuams. iJ Sunchnonous ii) Asynchnanous. Symchaanous ommunicaion : Synchaonous Seual
Commumi(ahon equlhesHhat the Sende 4 Rceivt
shane a (^) tlock_wih each othe (^) h (^) helps Receirta
h bit as staznt-bit
to h bitas dala: bit
bitosth paniiy bit
j bit as end bit
caa-bits
L LLL L
MsB (^) end
stort bit
LSB
Ponlty
UARTFuncionpins
I contains funcionpins
Pin Number Abbneviahon. Funchion
Dcp padta-Cannien Dekeck, means
tindicokycohethesi
Connwion has been wih modem Onnot RaD (^) Seni pat Input
3 D Senia DataOutpu
DIR Datu Tenmina Read l
c neceivVeh tnansmite i S heudyfo^ tnansmii
SiqnaCnound,
Pin-Numben Abbneviaion (^) Funchun,
pSR Dada Sel-Reudy, Bells that
neceiven is beady
heceive RIS (^) Ready to Send Tnun1miBta
is neudy Jo tnqnsmit
flaw anthol CTS (^) clean to Send, Rereivenis
nead low cantna
BI (^) Bing- incdicatos uhen heceivea i madem and ges (alled fnom PSTA Assgnment duesbions
1)What Hhings one stundandiedin Rs232 9
R$222 nepneSemts the voltuge tan path utd fOa dat
xchanqe beBween the devices, the signals Conntchinq bel pTE andpCE, (ommon2in uine conhqunaian and m1nimum maunt of contnol si9 nal
-21 muliple panihy bits allawed in VART
Nu mulHple bits ane not suppanteelin UHRI hundwqae, you want to ad you can do it pnaghamthall
Lolb- SenialV Am Sel^ up Connechion (^) belween two (^) Compuens (^) and
And i2eInansmisjion _and_Receive stalement
by (pentcnmin 1 Running Paoqnams in Linu
DescapHon..
Taansmittea Code
Hinclude sBdlib.h
indudeLstdia.h>
Hndudek unistd.h>
indude as232.h
indude iwindouws.h> Cf yau nun phoqnam on windaws).
int mun)
int iz 03-
pont na : 0,
bdnade 9600-
chun mode Cj 's,'N L'o stt2cS stntp st»coj,Hello 3 Staupy st»l11," Wonld In"
iLRs231Openphintt Cantlompant open tpaat-nn, compont"j bdnaBe mode2)i
nelunnt0Jj whle1) RS232-puds (cpont.na, stati1)j--
phiniSent 5 In StnCi
ifde WIN sleepLloo) Helse UnsleepJ000) Hendif
irtj-
netuan o,
Reteivea Code
Hincdude sstdio.hz.
tincludestdlib.hs Hindudeiwindaa.h indudei unistd.hs includen232.hy ind muint)A int i,n cpOntnn bdnake z A unsijntd. chan^ but^ luos
c'han mode^ C1a^0
s232 htaden le
int RS232 OpenCompant^ Cint^ cn,^ int^ bcaudral
ton St^ it chan made
int bdn
int status
pnintEC llegal^ compart^ nymben^ n"1;_
nehunn j_
Switch haudnaky Caye 50 bdn^ =^ B
bntak
Cast 153- bd B bnecuk tase 1600 bdh^ a^ B
bneuk
(ose 3So0o0o bdn s B3s00o bneck case u 000000 bdh 2 Suoo defad pninti invalid baudna In")- neunn(1)
bneak
i Stnlen (^) (mode) e (^3) priint f ( InYalid mode 15 In", mode ) neunn C1) Swlh mode co)){ case 's chis E (S8 bneck cCLI (^) chib: (^) (S1 (^) bak- dekaultpnintl Invalid numbe 1In madeCo)l,
Swrtch(made Ci
aSe N
Lase'n (^) pon0- 1pUnE 1GNPAR-
batukj
Swiich Lmode Caj )
aje (^1) bstop 0 bntak (ase bstop_r CS 1oP baale
23Dat Inansmisuion othousleep
In Hhis case UAR1wll take mont pawe (ie_enable
ewen it's not nequned.
