Bluetooth ndeye yakavhurika isina waya tekinoroji chiyero chekuchinjana data pamusoro pezvinhambwe zvipfupi uchishandisa mapfupi wavelength redhiyo kutumirwa kubva kune yakagadziriswa uye nharembozha uchishandisa packet-based protocol. Iyo wiring nzira yekufambiswa kwedhata yeBluetooth inogona kushandisa serial interface.
Chii chinonzi serial interface?
Ndiyo serial port yatinowanzo taura kuti iyo data inofambiswa mukutevedzana kweimwe kana akawanda mabheti pane shoma nhamba yeIOs. Kune akawanda marudzi akadai, anowanzo sanganisira: UART, IIC, SPI, CAN, USB, nezvimwewo, chero bedzi iri serial transmission interface, imhando yeserial port. Zvakakodzera kutaura pano kuti sezvo vanhu vaiwanzodaidza UART port serial port mumazuva ekutanga, munhu wese anowanzo taura nezve UART interface kana achitaura nezve serial port.
Musiyano uripo pakati peUART, SPI, uye IIC
UART interface
UART (Universal Asynchronous Receiver/Transmitter) serial interface ndiyo inonyanya kushandiswa tekinoroji yekutaurirana kune single-chip microcomputers. Inowanzo shandiswa kutaurirana pakati pe-single-chip microcomputer uye komputa uye pakati pe-single-chip microcomputer uye single-chip microcomputer.
SPI interface
SPI (Serial Peripheral Interface) ndiyo serial peripheral interface. SPI isynchronous serial data transmission standard uye yakakwirira-kumhanya, yakazara-duplex, synchronous yekutaurirana bhazi rinoshandiswa zvakanyanya mumidziyo yakawanda.
IIC interface
IIC (Inter-Integrated Circuit), inozivikanwawo seI2C, ndeye maviri-waya serial bhazi chimiro chekubatanidza microcontroller uye maperipherals ayo. Mabhenefiti makuru eIIC bhazi ari nyore uye anoshanda.
Musiyano 1
UART mitsara miviri, imwe inotumira anogamuchira, inogona kunge yakazara-duplex kutaurirana, nhamba yemitsara zvakare idiki. Iyo data inofambiswa asynchronously, uye nguva inodiwa yemapato ese ari maviri akasimba, uye kumhanya kwekutaura hakuna kukurumidza. Inonyanya kushandiswa mukukurukurirana kwe-multi-machine.
Musiyano 2.
SPI interface uye iri pamusoro UART, pane synchronous wachi mutsara, kuperevedza kweiyo UART iri pamusoro ndiyo mabhenefiti ayo, zvinodiwa zvenguva zvemativi maviri ekutaurirana hazvina kunyatso siyana michina inogona kusanganiswa nyore, uye kukurumidza kutaurirana kwakanyanya. fast. Inowanzo shandiswa mukumhanyisa data data pakati pezvikamu zvemukati zvezvigadzirwa, senge hombe-yekuyeuka.
Musiyano 3
IIC interface iriwo maviri-waya interface, ndiko kutumira kwedata pakati pemitsara miviri kuburikidza nehukama hwakaoma hunonzwisisika, kukurumidza kutaurirana hakuna kukwirira, chirongwa zvakare chakaoma kunyora. Iyo general single-chip system inonyanya kushandiswa kubatana ne24C02 uye imwe diki ndangariro iri nyore.
Cherechedza: SPI neUART inogona kuwana duplex yakazara, asi I2C haishande; I2C inononoka kupfuura SPI, iyo protocol ikati yakaoma kupfuura SPI, asi iyo yekubatanidza ishoma pane yakajairwa SPI.
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