1. Bluetooth module Serial chaw nres nkoj
Lub serial interface yog abbreviated raws li ib tug serial chaw nres nkoj, tseem hu ua ib tug serial kev sib txuas lus interface, feem ntau kuj hu ua COM chaw nres nkoj. Qhov no yog ib lo lus dav dav, thiab cov interfaces uas siv cov kev sib txuas lus serial hu ua serial ports. Ib tug serial chaw nres nkoj yog ib tug kho vajtse interface.
UART yog lub npe luv rau Universal Asynchronous Receiver / Transmitter, lub ntsiab lus Universal Asynchronous Receiver / Transmitter.
UART suav nrog TTL theem serial chaw nres nkoj thiab RS-232 theem serial chaw nres nkoj, thiab ob qho tib si siv UART kev sib txuas lus yuav tsum ua raws li UART raws tu qauv.
2. Bluetooth module UART raws tu qauv
Raws li cov txheej txheem sib txawv, nws tuaj yeem muab faib ua ob hom kev cai: H4 (TX/RX/CTS/RTS/GND) thiab H5 (TX/RX/GND)
H4: Kev sib txuas lus tsis suav nrog kev xa rov qab, yog li CTS / RTS yuav tsum siv. UART kev sib txuas lus yog nyob rau hauv "pob tshab kis tau tus mob" hom, uas yog, cov ntaub ntawv soj ntsuam los ntawm Logic analyzer yog cov ntaub ntawv kev sib txuas lus tiag tiag Direction Head DataType Host ->Controller 0x01 HCI Command Host ->Controller 0x02 ACL Packet Host ->Controller 0x03 SCO Packet Controller -> Tus Tswv 0x04 HCI Cov Txheej Txheem Tswj -> Tus Tswv 0x02 ACL Pob Khoom Tswj -> Tus Tswv 0x03 SCO Pob Khoom
H5: (tseem hu ua 3-xaim), vim yog kev txhawb nqa rau kev xa rov qab, CTS / RTS yog xaiv tau. H5 cov ntaub ntawv sib txuas lus pib thiab xaus nrog 0xC0, uas yog, 0xC0... payload 0xC0. Yog hais tias lub payload muaj 0xC0, nws yuav hloov mus rau 0xDB 0xDC; Yog hais tias lub payload muaj 0xDB, nws yuav hloov mus rau 0xDB 0xDD
3. Bluetooth module serial chaw nres nkoj
Feem ntau Bluetooth HCI modules txhawb H5 hom,
Ib feem me me (xws li BW101 / BW104 / BW151) tsuas yog txhawb H4 hom (xws li CTS / RTS yuav tsum tau)
Txawm hais tias H4 lossis H5, thaum lub sijhawm pib Bluetooth, cov txheej txheem pawg txuas nrog lub module ntawm tus nqi baud ntawm 115200bps. Tom qab kev sib txuas ua tiav, nws dhia mus rau qhov siab baud tus nqi (> = 921600bps). Feem ntau siv yog 921600/1M/1.5M/2M/3M
Faj seeb: H4 serial chaw nres nkoj configuration tsis muaj ib tug check me ntsis; H5 feem ntau siv txawm tias kos. Nco ntsoov teem hom ntawv thaum rub cov ntaub ntawv chaw nres nkoj cov ntaub ntawv nrog Logic analyzer.
4. Cov Ntaub Ntawv
Yeej tsis yooj yim
FSC-DB004-BT826 integrates BT826 Bluetooth module thiab DB004 pin interface board, txhawb Bluetooth 4.2 dual hom raws tu qauv (BR/EDR/LE), integrates baseband maub los, Cortex-M3 CPU, PCB kav hlau txais xov
- · Txheej Txheem: SPP, HID, GATT, thiab lwm yam
- Pob loj: 13 * 26.9 * 2mm
- · Lub zog 1.5
- · Default serial chaw nres nkoj baud tus nqi: 115.2kbps Baud tus nqi ntau: 1200bps ~ 921kbps
- · Txhawb kev hloov kho OTA
- · BQB, MFI
- · Ua raws li ROHS specifications
5. Ntsiab lus
Bluetooth serial kev sib txuas lus yog ib qho yooj yim thiab yooj yim kev paub. Feem ntau, thaum debugging, nyeem cov module specification kom zoo, thiab xyuam xim rau qee qhov teeb meem thaum siv Logic analyzer. Yog tias koj tsis nkag siab lwm yam, koj tuaj yeem tiv tauj pab pawg Feasycom!
