El Olimex USB-SERIAL-L Sisixhobo esikwazile ukugqama kwi-USB ukuya kwi-serial converter market ngenxa yeempawu zayo eziphambili kunye noyilo lwayo kunye neengcali kunye ne-electronics kunye nabathanda inkqubo engqondweni. Esi sixhobo, esiphuhliswe ngu-Olimex, asikho nje "enye ngaphezulu" kudidi lwayo, kodwa ibandakanya imisebenzi eyenza ibe yinyaniso. ubhetyebhetye kwiindawo ezahlukeneyo zobugcisa.
Ndiyabulela kwindalo yayo njenge-hardware umthombo ovulekileyo, i-USB-SERIAL-L ayivumeli kuphela ukuguquguquka okukhulu ekusebenziseni kwayo, kodwa ikhuthaza intsebenziswano kunye nokwenza ngokwezifiso ngaphakathi koluntu lwezobuchwepheshe, into eyahlula kwezinye iimveliso ezisisiseko. Apha ngezantsi, siza kuphonononga ngokucokisekileyo zonke iinkcukacha zayo kunye nokuba yintoni eyenza ukuba ibe yokhethekileyo.
Iimpawu eziphambili ze-Olimex USB-SERIAL-L
Le modeli inothotho lweempawu ezenza ukuba ibe a isixhobo esibalulekileyo kubaphuhlisi kunye namagcisa afuna ukusebenza ngezixhobo ezilandelelanayo. Elinye lawona manqaku anamandla kukuba ixhasa amazinga odluliselo ukuya kuthi ga 3 Mbps, ukodlula ezinye iimodeli kuluhlu olufanayo olufikelela kuphela kwi-1 okanye i-2 Mbps.
- Inkxaso yeNqanaba loMbane oMninzi: Uyilo lwayo olulungelelanisiweyo luvumela ukuba lusebenze kunye nemigangatho ukusuka kwi-0,65V ukuya kwi-5,5V, okwenza kube yinto efanelekileyo yokusebenzisana neentlobo ezininzi zeeprosesa, ii-SoCs okanye iinkqubo zeFPGA.
- Ubungakanani bomqondiso: Inikezela ngenkxaso epheleleyo yeempawu ze-Tx, Rx, CTS kunye ne-RTS. Oku kuthetha ukuba iyakwazi ukuphatha ngokufanelekileyo imisebenzi ethile ezenzekelayo, efana nokuqalisa kunye nokuphuma kwezinye izilayishi.
- uyilo oludibeneyo: Imilinganiselo yayo yi-35 x 35 x 8 mm nje, ithatha indawo encinci kwaye inebhokisi yeplastiki ekhusela amacandelo e-elektroniki.
- Uqhagamshelo lwe-USB-C: Eli zibuko langoku liqinisekisa uxhulumaniso oluzinzileyo kwaye likuvumela ukuba unike amandla isixhobo nge +5V.
Izinto eziluncedo ngaphezu kwezinye iimveliso ezifanayo
Xa kuthelekiswa nezinye iimodeli zohlobo olufanayo, njenge-USB-SERIAL-F kunye ne-USB-SERIAL-M, i-USB-SERIAL-L igqame ngokukodwa ukuquka. iimpawu zolawulo ezongezelelweyo njenge-CTS kunye ne-RTS, into engabandakanywayo ezinye iimodeli ezisisiseko. Ukongeza, ukukwazi ukulungelelanisa amanqanaba ombane kuyenza ihambelane neentlobo ezininzi zezixhobo zombane.
Ezinye iimveliso kwimarike, ezifana ne-BB-CH340T, zinokufikelela kwi-2 Mbps, kodwa i-USB-SERIAL-L idlula esi santya ngenkxaso ukuya kuthi ga. 3 Mbps, okwenza kube lula ukukhuphisana kwimisebenzi enzima. Oku kuyenza ibeyeyona ndlela iphambili kwizicelo ezahlukeneyo zobugcisa.
Uyilo lwengqondo yomsebenzisi
Into ethandwa ngabasebenzisi abaninzi kukuba i-USB-SERIAL-L iza idityaniswe ngokupheleleyo kwaye ivavanyiwe, ilungele ukusetyenziswa ngaphandle kwebhokisi. Ukongeza, iphakheji ibandakanya iintambo ezisixhenxe ezingama-200 mm, eyongeza inqanaba lokulula ngokuphelisa isidingo sokukhangela izixhobo ezongezelelweyo.
Uyilo lukwabandakanya ubume be-LEDs ukondla, ukuhanjiswa kunye nokwamkelwa, okwenza kube lula ukulungisa iingxaki ngexesha lokusetyenziswa. Ukuqinisekisa ukusebenza okuthembekileyo, isixhobo sisebenzisa i-chip ye-CP2102N evela kwi-Silicon Labs, eyaziwayo ngokuhambelana kwayo kunye neenkqubo zanamhlanje kunye neenguqulelo ezindala zeWindows, i-Linux, i-Android kunye ne-macOS.
Amaxwebhu kunye nenkxaso evulekileyo
I-USB-SERIAL-L iza ne amaxwebhu apheleleyo kwaye ifikeleleke kumaqonga anje ngeGitHub. Oku kubandakanya i-schematics kwifomathi ye-KiCAD, iifayile zoyilo kunye neemodeli ze-3D ze-casing. Ukufumana ilayisensi phantsi kwemigangatho yomthombo ovulekileyo njenge CERN Open Hardware License, ukwamkelwa kwayo kunye nokwenza ngokwezifiso kwiiprojekthi zomntu okanye zeqela kuyakhuthazwa.
Inkxaso evulekileyo ikwabandakanya abaqhubi abakhutshelwa ngokulula kwiwebhusayithi yeSilicon Labs, nangona uninzi lweenkqubo zokusebenza zangoku sele zibandakanyiwe ngaphambili. Oku kunciphisa kakhulu iingxaki ezinokubakho ufakelo lokuqala.
Isixhobo sifumaneka kwivenkile esemthethweni ye-Olimex nge ixabiso kukhuphiswano I-9,95 yee-euro, iyenza ibe lukhetho olufikelelekayo kwiingcali kunye nabasakhulayo ngokufanayo. Ngaphaya koko, umgangatho wayo kunye nokusebenza kwayo kuyibeka njengesixhobo esifanelekileyo kwabo bafuna isisombululo esiguquguqukayo nesinoqoqosho.
Ngoyilo olomeleleyo, izinto ezintsha kunye nendlela evulekileyo kuluntu lwetekhnoloji, i-USB-SERIAL-L igqame njengenye yezona ndlela zibalaseleyo kudidi lwayo lokulawula unxibelelwano lwe-serial ngokufanelekileyo nangokuthembekileyo.