Kodi Chiyankhulo cha SPI n'chiyani? Kodi SPI imagwira ntchito bwanji?

Kodi Chiyankhulo cha SPI n'chiyani? Kodi SPI imagwira ntchito bwanji?

SPI imayimira Serial Peripheral interface ndipo, monga momwe dzinalo likusonyezera, serial peripheral interface. Motorola idayamba kufotokozedwa pa ma processor ake a MC68HCXX-series.SPI ndi basi yolumikizirana yothamanga kwambiri, yolumikizana ndi awiriawiri, komanso yolumikizana molumikizana, ndipo imangokhala ndi mizere inayi yokha pa chip pin, ndikusunga pini ya chip, pomwe imasunga malo a PCB layout, zomwe zimapangitsa kuti zikhale zosavuta, zomwe zimagwiritsidwa ntchito kwambiri mu EEPROM, FLASH, nthawi yeniyeni, AD converter, komanso pakati pa purosesa ya digito signal ndi digito signal decoder.

SPI ili ndi njira ziwiri zazikulu ndi za kapolo. Dongosolo lolumikizirana la SPI liyenera kukhala ndi chipangizo chimodzi (ndi chimodzi chokha) chachikulu ndi chipangizo chimodzi kapena zingapo za kapolo. Chipangizo chachikulu (Master) chimapereka wotchi, chipangizo cha kapolo (Slave), ndi mawonekedwe a SPI, zomwe zonse zimayambitsidwa ndi chipangizo chachikulu. Ngati pali zida zingapo za kapolo, zimayendetsedwa ndi zizindikiro za chip.SPI ndi full-duplex, ndipo SPI simatchula malire a liwiro, ndipo kukhazikitsa konsekonse nthawi zambiri kumatha kufika kapena kupitirira 10 Mbps.

Mawonekedwe a SPI nthawi zambiri amagwiritsa ntchito mizere inayi ya chizindikiro polankhulana:

SDI (Kulowetsa Deta), SDO (Kutulutsa Deta), SCK (Wotchi), CS (Sankhani)

MISO:Pini yoyambira yolowera/yotulutsa chipangizo kuchokera ku chipangizocho. Piniyo imatumiza deta mu mode ndikulandira deta mu mode yayikulu.

MOSI:Pini Yoyambira Yotulutsa/Yolowetsa kuchokera ku chipangizocho. Piniyo imatumiza deta mu mawonekedwe akuluakulu ndikulandira deta kuchokera mu mawonekedwewo.

SCLK:Chizindikiro cha wotchi yotsatizana, chopangidwa ndi zida zazikulu.

CS / SS:Sankhani chizindikiro kuchokera ku chipangizocho, cholamulidwa ndi chipangizo chachikulu. Chimagwira ntchito ngati "chipini chosankha ma chip", chomwe chimasankha chipangizo cha kapolo chomwe chatchulidwa, kulola chipangizo chachikulu kulankhulana ndi chipangizo cha kapolo chokha ndikupewa mikangano pa mzere wa data.

M'zaka zaposachedwa, kuphatikiza ukadaulo wa SPI (Serial Peripheral Interface) ndi ma OLED (Organic Light-Emitting Diode) kwakhala chinthu chofunikira kwambiri mumakampani opanga ukadaulo. SPI, yodziwika bwino chifukwa cha kugwira ntchito bwino kwambiri, kugwiritsa ntchito mphamvu zochepa, komanso kapangidwe kosavuta ka zida, imapereka kutumiza kwa chizindikiro chokhazikika kwa ma OLED. Pakadali pano, ma OLED screen, omwe ali ndi mawonekedwe odzitulutsa okha, ma contrast ratios apamwamba, ma wide viewing angles, ndi mapangidwe owonda kwambiri, akulowa m'malo mwa ma LCD screen achikhalidwe, kukhala njira yabwino kwambiri yowonetsera mafoni, zovala, ndi zida za IoT.