He aha ka SPI Interface? Pehea ka hana ʻana o SPI?

He aha ka SPI Interface? Pehea ka hana ʻana o SPI?

Kū ka SPI no Serial Peripheral interface a, e like me ka inoa i hōʻike ʻia, he serial peripheral interface. Ua wehewehe mua ʻia ʻo Motorola ma kāna kaʻina hana MC68HCXX-series.SPI he kiʻekiʻe-wikiwiki, piha-duplex, synchronous kamaʻilio kaʻa kaʻa, a noho wale i eha laina ma ka chip pin, e hoola i ka pine o ka chip, oiai e hoola ana i wahi no ka PCB hoʻonohonoho, e hoʻolako 'oluʻolu, nui hoʻohana 'ia ma EEPROM, FLASH, maoli-manawa uaki, AD converter, a ma waena o ka kikohoʻe hōʻailona decoder.

ʻElua mau ʻano haku a me ke kauā ka SPI. Pono ka ʻōnaehana kamaʻilio SPI e hoʻokomo i hoʻokahi (a hoʻokahi wale nō) mea hana haku a hoʻokahi a ʻoi aku paha nā mea kauā. Hāʻawi ka mea nui (Master) i ka uaki, ka mea kauā (Slave), a me ka interface SPI, i hoʻomaka ʻia e ka mea nui. Ke loaʻa nā polokalamu kauā he nui, mālama ʻia lākou e nā hōʻailona chip.He duplex piha ka SPI, a ʻaʻole wehewehe ka SPI i ka palena wikiwiki, a hiki i ka hoʻokō maʻamau ke piʻi a ʻoi aku paha ma mua o 10 Mbps.

Hoʻohana maʻamau ka interface SPI i ʻehā laina hōʻailona no ke kamaʻilio ʻana:

SDI (Komo ʻIke), SDO (Hōʻike i ka ʻikepili), SCK (Uka), CS (koho)

MISO:ʻO ka pine hoʻokomo/puka puka mua mai ka hāmeʻa. Hoʻouna ka pine i ka ʻikepili i ke ʻano a loaʻa i ka ʻikepili i ke ʻano nui.

MOSI:Mea hoʻopuka mua / pine hoʻokomo mai ka hāmeʻa. Hoʻouna ka pine i ka ʻikepili ma ke ʻano nui a loaʻa ka ʻikepili mai ke ʻano.

SCLK:Hōʻailona uaki Serial, i hana ʻia e nā mea hana nui.

CS / SS:E koho i ka hōʻailona mai nā mea hana, i hoʻomaluʻia e nā mea hana nui. Hoʻohana ia ma ke ʻano he "pin koho chip", e koho i ka mea kauā i ʻōlelo ʻia, e ʻae ana i ka mea haku e kamaʻilio me kahi mea kauā kikoʻī wale nō a pale i nā paio ma ka laina ʻikepili.

I nā makahiki i hala iho nei, ua lilo ka hui pū ʻana o ka ʻenehana SPI (Serial Peripheral Interface) a me nā hōʻike OLED (Organic Light-Emitting Diode) i wahi kiko i ka ʻoihana ʻenehana. ʻO SPI, i ʻike ʻia no kāna ʻoihana kiʻekiʻe, ka hoʻohana haʻahaʻa haʻahaʻa, a me ka hoʻolālā ʻana i nā hāmeʻa maʻalahi, hāʻawi i ka hoʻouna hōʻailona paʻa no nā hōʻike OLED. I kēia manawa, ʻo nā pale OLED, me kā lākou mau waiwai ponoʻī, nā ratio like ʻole, nā kihi ākea ākea, a me nā hoʻolālā ultra-thin, ke hoʻololi nei i nā pale LCD kuʻuna, e lilo i mea hoʻonā hōʻike makemake no nā smartphones, wearables, a me nā mea IoT.