Yintoni COM-port? Le fowuni, ulawulo COM-port

COM-port, okanye uthotho lezibuko yinto ujongano kumacala amabini serial, nto leyo eyenzelwe utshintsho byte data. Kuba kwixesha lokuqala, i Izibuko isebenziselwa ukudibanisa i terminal nakuzo modem, kunye nempuku. Ngoku iqhele ukusetyenziswa ukudibanisa umbane uninterruptible kunye nonxibelelwano kunye zekhompyutha iinkqubo processing computing iklip uhlobo.

ukusetyenziswa

Ngoko ke, ngaphambi kokuba uthethe ngento a COM-izibuko, kufuneka bakhangele elidlulileyo le nokuqonda intsingiselo yawo. Kwiminyaka nje eli-15 eyadlulayo, indlela esetyenziswayo ukuqhagamshela izixhobo kwikhompyutha kusetyenziswa isinxibelelanisi ekhethekileyo umgangatho ibekwe emva kwisisu semoto usebenzisa ekhethekileyo serial RS-232 USB. Le ndlela iye neengxaki ezininzi. Loo USB, ngemilinganiselo yanamhlanje, inika elisezantsi kakhulu izinga data - malunga nekhulu kilobits ngomzuzu. Ukongeza, xa usenza udibaniso ebonakalayo izihlanganisi ezifunekayo ukuphumeza ukuvalwa ezi zixhobo, kwaye ziqhotyoshelwe omnye komnye esebenzisa ngezikhonkwane, ukuba ukuqinisekisa ukuthembeka, lo gama ubungakanani babo inexabiso elikhulu.

A incinane

COM-port kwi ngoko kwiikhompyutha ngokwemveli enxibe inombolo 1 okanye 2, njengoko zidla akukho ngaphezu ezimbini. Unako ukufaka amazibuko ezongezelelweyo xa kwavela imfuneko. Xa kufuneka kucwangciso software umsebenzisi ukuthintela ukubhideka kunye ngokuchanekileyo uyibeke lowo kanga izixhobo eziyimfuneko. Ngasinye izicwangciso COM-port ufuna isantya elichanekileyo yokosulela data, kwakunye nenani ezinye zofihlo Ipharamitha lowo ubesazeka kuphela kwisangqa elimxinwa lweengcali. Ukuqhagamshela isixhobo ukuba nempumelelo, zonke izinto eziyimfuneko iparameters kwakufuneka ethile ukuze bafunde okanye uthathe ngokomfuniselo, njengokuba kulo mzekelo, kwakungekho na uqwalaselo oluzenzekelayo. Ukongeza, uqhagamshelwano nge COM-port ekwaziyo uqhagamshela naziphi na izixhobo kunye naziphi na izixhobo yangaphandle, kude kakhulu azingqinelani, nto leyo esisizathu sokuba kwinkqubo yokubeka kwaye kukho ezininzi iimpazamo.

modernity

Ngoku uqhagamshelwano nge COM-izibuko indawo ngokupheleleyo ngakumbi indlela mihla, nto leyo endinga akukho ulwazi esikhethekileyo ukuphunyezwa, oko kukuthi nge-USB-izibuko. Le ndlela akanalo zonke kuneengxaki okhankanywe ngaphambili. Noko ke, imigangatho yangoku ukuhambelana uqhagamshelwano kuzo zonke iintlobo GPS-izixhobo kunye software owahlukeneyo kakhulu kwabunjwa ixesha elide emhlabeni ingqikelelo COM-namachweba abaye lwakudala yangoku.

Oku esidityaniswe nesibakala sokuba ekuqaleni phantse nasiphi na isixhobo, kubandakanywa GPS, kwaba ngaphandle, kwaye uqhagamshelwano yayo kwi computer lwenziwa yi intambo serial kubekanye kwizithuba ze mazibuko iintsimbi. Ukususela umsebenzisi kwinkqubo uqwalaselo efunekayo ukuze ukhethe isantya inani lezibuko kunye data translation echanekileyo kuyo. Ngelo xesha, kwakukho umgangatho data ukususela GPS-ufumana ucwangciso, ngoku ekuthiwa NMEA-0183. Enyanisweni, lo mgangatho ufuna bonke ababhekisi phambili, nkqu hardware mihla kunye software ukuxumana le COM-port. Kwaye konke oku ebusweni oko iikhompyutha mihla, kwakunye CPC, kukade icangcisiwe, ubukhulu becala umgangatho USB. Kwaye enye osemqoka ukuba GPS-balwamkele zakutsha nje ngakumbi waqalisa ukuba kufakelwe ngqo ngaphakathi kothango ukuba akakho ngokupheleleyo nayiphi na intambo uqhagamshelwano phakathi kuyo kunye isixhobo ephambili.

ichweba COM Virtual

Le ndlela ngaphandle kwemoto, oko kukuthi, ukuphuhlisa "yenyani» COM-namachweba. Kubonakala ukuba isixhobo lwangaphakathi Pilot, umzekelo, GPS-yomfumani efanisiweyo kwi software njenge COM-port, ngelixa abo engekho phantsi hardware. Kule nkqubo, nto leyo yenzelwe neza ngokusebenzisa umgangatho ofanayo, akukho mahluko ukuba kwenziwa njani. Kusenokubakho phambi Ukulinganisa virtual, yaye akunyanzelekanga ukuba ubukho ukuphunyezwa zekhompyutha. Ngoko ke kunokwenzeka ukuqinisekisa ukuhambisana omdala imodeli GPS-software ne izixhobo zale mihla.

utshintsho

Ngelo xesha ukulawula COM-izibuko ayikatshintshi kakhulu. Umsebenzisi endala kufuneka enze yababini entsonkothileyo phantse ngesandla. Noko ke, mihla COM-izibuko imele na isixhobo enkulu ibekwa kwiqela lenjongo ngasemva kwinkqubo unit, yaye isixhobo ezahlukeneyo ngokupheleleyo. Ke ngoko yonke into kukuba ukususela software ngembono, zonke zibonakala lokuphumeza bukathixo, oko kukuthi, akukho mahluko phakathi namazibuko virtual kwaye ibe yinyani. Kuba software amanani ezibuko kwahluka kuphela ukuba abelwe ukuba abavelisi nePDA mihla random ngokupheleleyo. Umzekelo, umdlali ka Asus ngokuqhelekileyo kwi COM5, kunye PocketLOOX 560 ubonisa akwamkele for COM8. Kubonakala ukuba iprogram ufuna ukufumana evela data GPS-yomfumani uye ekuqaleni ulwazi oluthembekileyo malunga inombolo yesazisi izibuko ivela phantsi apho, ababhalisele kwisamkeli ohambelana kule nePDA.

wenza njani wonke lo msebenzi?

Ngako oko, unako enze uphando oluzenzekelayo ukuba inkqubo efanelekileyo loo uphando zonke ezikhoyo COM-amazibuko ayinakuthenjwa kakuhle kakhulu ngumsina. Oku kubangelwa yinto yokuba isixhobo iboniswe kwinkqubo njenge COM-izibuko, kunokuba kakhulu ezahlukahlukeneyo yaye aziyi ezinxulumene GPS, inokuba kakhulu akucingeleki, ukuba uphendule le saveyi. Umzekelo, i-PDA ke amazibuko ezinxulumene imodem zeselula lwangaphakathi, kunye USB, lefoni, kwakunye nezinye izinto. Ebabongoza inkqubo eyilelwe ukusebenza isixhobo esithile, kungakhokelela ekubeni reactions akucingeleki, ngokupheleleyo, kwakunye ezizuzwa ezahlukahlukeneyo kubangela ujinga nePDA. Kungenxa yoko le nto ukuzama ukuvula COM-izibuko kunokukhokelela iimeko ezingalindelekanga ukuya ku vula Bluetooth okanye lefoni. Kwaye kusenokuba kukho amatyala abangenagama ngakumbi.

Jobs COM-port

Kuba COM-izibuko isetyenziswa njengesiseko i olungenangqamaniso jikelele transceiver chip. Le chip iyafumaneka ntlobo ezininzi: Intel 16550A, 16550, 16450, 8250. Ukuze ngamnye COM-nezibuko iqulathe iirejista receiver kunye samaza iinkcukacha kunye nenani iirejista yokulawula kungafikelelwa ngokusebenzisa i-BIOS, Windows ne MS DOS. Xa iinguqulelo ezintsha zala chip unesethi ezingqubano okugcina okwethutyana idatha zisasazwe kwaye zifunyanwe. Ngesi ukwazi, ungenza ukuphazamisa ukusebenza CPU alufane, kwakunye nokulungelelanisa izinga data zosasazo.

The main iparameters

isixhobo COM-izibuko ithatha ubukho iimpawu ezinjalo iimpawu:

- idilesi isiseko ezibuko ukufaka kwaye kukukhupha ulwazi;

- inombolo sophazamiso yentsimbi;

- ubungakanani ibhloko enye ulwazi;

- izinga apho data ethunyelwayo;

- mode Ubhaqo ingqibelelo;

- indlela yolawulo flow;

- inani ziikhowudi stop.

Indlela ukukhangela COM-port kwikhompyutha yakho? Yintoni ufune?

Njengoko kuchaziwe ngaphambili, olu hlobo izibuko ujongano kabini owenza ukuba ugqithiso lwedata kwinqanaba bit ngendlela engqinelana. Eyona eyahlukileyo kuthelekiswa izibuko enxuseneyo nanku bit transfer data kancinci. COM-port komzimba into yokuba le khompyutha engazenzi yedwa usebenzisa lezibuko indlela zodluliselo lwedata. Umzekelo, ujongano ezifana Ethernet okanye USB, ukusebenzisa lo mgaqo, kodwa ke kwenzeka ngokwembali ukuba serial ebizwa ukuba umgangatho RS232 port.

Idla kufuneka ukuvula COM-izibuko ukuba ziyolungiswa computer uxilongo, lo gama kuyimfuneko ukuba ahlole ku yokusebenza. Burn element ngenxa yokuba ilula kakhulu. Oku kwenzeka kakhulu ezibangelwa ngumsebenzisi nesibonisa isixhobo engalunganga kokuqhawulwa, bawurhuqa isinxibelelanisi xa uqhagamshele kujongano. Indlela elula yokuvavanya indlela yokusebenza esibonakalayo ukudibanisa kuyo nge mouse. Nangona kunjalo, oku kunzima ukufumana umfanekiso opheleleyo, kuba eneqikili isebenzisa isiqingatha kuphela imigca signal warn. Kuphela ukusetyenziswa plug ekhethekileyo kuvumela inkqubo ukukhangela ukusebenza. Ukulungiselela le njongo sele ikhona software eziphuhlileyo ngokukhethekileyo.