Chii SPI-inowanikwa

SPI-inowanikwa yakanga yakataurwa Motorola. Nhasi ndiyo imwe yenzvimbo dzine mukurumbira, nokuda kwayo kumhanya uye asina nyore Navose anoreva Serial mhando. Uyezve, SPI-inowanikwa Ndiyewo papi musimboti. Zvikurukuru, SPI ndiye pfungwa Data (tenzi-nhapwa) pakati maviri akasiyana namano. ehupfumi Zvokunyama mari ndoda pfungwa dzika navo, sezvo vachiti, "iri ezvinhu", hazvina kupa yakaderera yakati Protocol. Mumwe mugadziri anogona kuita chinhu pachavo.

SPI-inowanikwa tsananguro

The pfungwa mudziyo yakadaro Serial date kuchinjirwa (Zvishoma nezvishoma). Mudare ichi uye kuverenga vanoparadzaniswa munguva achishandisa chaiyo wachi chiratidzo panguva bhazi chairo (anonzi "bhazi nguva" kana "sync"). By kuparadzana chinorehwa kuti panovira Data uye iverengwe muitiro paruchaitika pakatarisana wachi pamupendero kwakaita mubhazi. With zvakajeka ichi kwakaparadzaniswa munguva interlace kuverengwa uye zviruva, zvinova zvinoita kuti kushandisa mumwe chete kunyoresa kugamuchira uye kuparadzira mashoko. Zviri pasi musimboti ichi uye akakurukura SPI-inowanikwa. Zvisinei, kukura zvemichina haisi akamira, nokure kurei uwandu ndangariro kwete kupa chero matambudziko, uye vakawanda mano vane yoga kwezvavakaisa goho evoruzhinji. Kuno Muchidimbu zvatakurukura kuti SPI inowanikwa hwakarongwa.

Tsananguro mudziyo oparesheni

Mudziyo generating wachi pulses (kudzorwa) kuti bhazi kuchengeta nguva, munhu "tenzi" (tenzi). mudziyo ichi anotonga yose nedanho date Exchange, kureva, anosarudza kana kutanga exchange, kana kupedzisa, sei nhonga mashoko kuchinjirwa uye zvichingodaro .. The mudziyo yechipiri pokuita exchange, akadana vazhinji "muranda." mudziyo uyu haisi chero nzira sei bhazi wachi. For renguva duplex Exchange (hutachiwana mu zvose kumativi panguva) SP- inowanikwa anoshandisa mitsara mina:

- Mosi - kwezvavakaisa goho yacho tenzi romuranda. Pamwe mutsetse uyu pane kupararira mashoko kubva nehondo kusvikira receiver.

- MISO - tenzi kwezvavakaisa goho "muranda." By mufambiro ichi tenzi anogamuchira mashoko kubva upiyona mudziyo.

- SCLK - bhazi wachi. Maererano neizvi, kuti "kutungamirira" mudziyo zvinowanisa wachi pulses.

- SS - pakusarudza "muranda." With tenzi ichi waya anodzora Exchange chapera.

Kufunga-razero yomuropa vari encoded, uye chikwata voltage ukoshi pamusoro date bhazi (MISO uye Mosi). Chiratidzo SS inoratidza kuguma uye mavambo yechirongwa mashoko exchange. Kakawanda ndiyo Ivan Kuchin. Izvi zvinoreva kuti panguva date Exchange "tenzi" mudziyo inofanira kuiswa iri mutsetse SS yakaderera pamwero chiratidzo, uye panguva Exchange kumugumo - soro. Kuvapo SS-chechetere yedzimudzangara kunoita kuronga "muranda" mano akawanda achishandisa wachi Mureza uye date bhazi pasina zvimwe protocols. Zvisinei, kana kubatana kwakadaro zvakakodzera kupa mabiko mudziyo mumwe yoga mutsetse SS.