Ukukhetha phakathi kwe-I2C ne-SPI yeProjekthi yakho

Ukukhetha phakathi kwe-I2C ne-SPI, iindlela ezimbini zokuqala zonxibelelwano, zinokuba ngumngeni kwaye zinempembelelo ebalulekileyo ekuyiyileni kwiprojekthi, ingakumbi ukuba isetyenziswano esilungileyo sisetyenziswa. Zombini i-SPI kunye ne-I2C zizisa iingenelo zabo kunye nokunciphisa njengoko iinkqubo zokunxibelelana ezenza ukuba zilungele izicelo ezithile.

SPI

I-SPI, okanye i-Serial kuya kwi-Interface ye-Peripheral, yinkxaso ephantsi kakhulu, inxibelelwano ye-serial ye-serial ezine eyenzelwe abalawuli be- IC kunye nemipheripha yokuthetha. Ibhasi le-SPI lihamba ngebhasi epheleleyo, evumela ukuba unxibelelwano luqhube kwi-master master device ngexesha elifanayo ukuya kuma-10Mbps. Ukusebenza ngokukhawuleza kwe-SPI ngokubanzi kukukhawulela ekubeni kusetyenziswe ukuthetha phakathi kwamalungu kwi-PCB ehlukeneyo ngenxa yokwanda kwesikhundla sokunxibelelana kwamanqanaba omde okongeza kwimigca yesiganeko. I-capacitance ye-PCB inokukhawulelisa ubude bee-SPI zonxibelelwano.

Ngelixa i-SPI ngumgaqo-nkqubo osiweyo, akusiyo umgangatho osemthethweni okhokelela kwizinto ezihlukeneyo kunye ne-SPI ngokwenza izinto ezinokubangela ukuba kubekho imiba engqinelanayo. Iimpembelelo ze-SPI kufuneka zihlale zihlolwe phakathi kwabalawuli abaziintloko kunye neengcaphephe zekhoboka ukuqinisekisa ukuba inhlanganisela ayinayo nayiphi na ingxaki engaxeliweyo yokunxibelelana eya kuba nefuthe ekuphuhlisweni kwemveliso.

I2C

I2C ngumgaqo-nkqubo oqhelekileyo wezonxibelelwano lwee serial ofuna kuphela imigca yesiganeko esenzelwe ukunxibelelana phakathi kweepips kwi-PCB. I2C yayilungiselelwe okokuqala ukuhanjiswa kwe-100kbps kodwa iimodemu zokudlulisa idatha ngokukhawuleza zenziwe ngaphaya kweminyaka ukuphumeza ukukhawuleza ukuya kwi-3.4Mbps. Umgaqo-nkqubo we-I2C usungulwe njengomgangatho oseburhulumenteni, obonelela ukuhambelana okufanelekileyo phakathi kweenkqubo ze-I2C kunye nokuhambelana okuhle.

Ukukhetha phakathi kwe-I2C ne-SPI

Ukukhetha phakathi kwe-I2c kunye ne-SPI, iinkqubo ezibalulekileyo zokunxibelelana kwee-serial, zifuna ukuqonda kakuhle iingenelo kunye nokulinganiselwa kwe-I2C, SPI kunye nesicelo sakho. Iprotocol nganye yoqhagamshelwano iya kuba neenzuzo ezikhethekileyo eziza kubonakala ngokwahlukileyo njengoko kusebenza kwisicelo sakho. Ukwahlula okubalulekileyo phakathi kwe-I2C kunye ne-SPI kukuba:

Ezi zihlukileyo phakathi kwe-SPI kunye ne-I2C kufuneka zikhethe ukhetho olufanelekileyo kunxibelelwano lwakho lwesicelo. Zombini i-SPI kunye ne-I2C ziintetho zonxibelelwano ezilungileyo, kodwa ngamnye unamathuba ambalwa kunye nezicelo ezikhethiweyo. Ngokubanzi, i-SPI ilungele iiprogram eziphezulu kunye nezixhobo ezinamandla ngelixa i-I2C ilungele ukudibanisa nenani elikhulu lezithako kunye nokutshintshwa okuguquguqukayo kwendima yesikhokelo senkosi phakathi kwimizila yebhasi ye-I2C. Zombini i-SPI kunye ne-I2C ziyimigaqo eqhagamshelwano elomeleleyo yezicelo zokungena ezifanelekileyo ngokufanelekileyo kwihlabathi elimanyeneyo.