1. Bluetooth module Serial port
Iyo serial interface inopfupikiswa seya serial port, inozivikanwawo se serial yekutaurirana interface, inowanzo zivikanwa seCOM port. Iri ishoko rinozivikanwa, uye mainterface anoshandisa serial kutaurirana anonzi serial ports. A serial port ndeye hardware interface.
UART ndiyo chidimbu cheUniversal Asynchronous Receiver/Transmitter, zvichireva kuti Universal Asynchronous Receiver/Transmitter.
UART inosanganisira TTL level serial port uye RS-232 level serial port, uye zvese zvishandiso zvinoshandisa UART kutaurirana zvinoda kutevedzera UART protocol.
2. Bluetooth module UART protocol
Zvinoenderana neakasiyana mafomati eprotocol, inogona kukamurwazve kuita maviri mafomati eprotocol: H4 (TX/RX/CTS/RTS/GND) uye H5 (TX/RX/GND)
H4: Kukurukurirana hakusanganisire kutapurirana, saka CTS/RTS inofanira kushandisa. Kukurukurirana kweUART kuri mu "transparent transmission" modhi, kureva kuti, iyo data inotariswa kuburikidza neLogic analyzer ndiyo chaiyo yekutaurirana data Direction Head DataType Host -> Controller 0x01 HCI Command Host -> Controller 0x02 ACL Packet Host -> Controller 0x03 SCO Packet Controller. -> Host 0x04 HCI Chiitiko Controller -> Host 0x02 ACL Packet Controller -> Host 0x03 SCO Packet
H5: (inozivikanwawo se3-waya), nekuda kwerutsigiro rwekutumirazve, CTS/RTS inosarudzika. H5 kutaurirana data packets kutanga uye kupera ne 0xC0, kureva, 0xC0 ... payload 0xC0. Kana iyo payload iine 0xC0, inoshandurwa kuita 0xDB 0xDC; Kana iyo payload iine 0xDB, inoshandurwa kuita 0xDB 0xDD
3. Bluetooth module serial port
Mazhinji maBluetooth HCI modules anotsigira H5 modhi,
Chikamu chidiki (senge BW101/BW104/BW151) chinongotsigira H4 modhi (kureva CTS/RTS inodiwa)
Ingave H4 kana H5, panguva yekutanga kweBluetooth, iyo protocol stack inobatanidza nemodule pane baud rate ye115200bps. Mushure mekunge kubatana kwabudirira, kunosvetukira kune yakakwira baud rate (> = 921600bps). Inowanzoshandiswa ndeye 921600/1M/1.5M/2M/3M
Cherechedza: H4 serial port configuration haisanganisi cheki cheki; H5 inowanzoshandisa kunyange cheki. Rangarira kuseta iyo fomati paunenge uchibata serial port data mapaketi ane Logic analyzer.
4. Nyaya
Basic parameters
FSC-DB004-BT826 inobatanidza BT826 Bluetooth module uye DB004 pin interface board, inotsigira Bluetooth 4.2 dual mode protocol (BR/EDR/LE), inobatanidza baseband controller, Cortex-M3 CPU, PCB antenna.
- · Protocol: SPP, HID, GATT, nezvimwe
- ·Package size: 13 * 26.9 * 2mm
- ·Simba nhanho 1.5
- ·Default serial port baud rate: 115.2kbps Baud chiyero chiyero: 1200bps~921kbps
- · Tsigira OTA kusimudzira
- ·BQB, MFI
- ·Inoenderana neROHS yakatarwa
5. pfupiso
Bluetooth serial kutaurirana iri nyore uye ruzivo rwekutanga. Kazhinji, kana uchigadzirisa, verenga iyo module nekungwarira, uye teerera kune zvimwe zvinhu paunenge uchishandisa iyo Logic analyzer. Kana iwe usinganzwisise chimwe chinhu, unogona kubata Feasycom timu!
