User Manual Product Name: Bluetooth module Model Name: DX-BT24 Manufacture: SHEN ZHEN DX-SMART TECHNOLOGY CO.
DX-BT24 蓝牙技术手册 Table Of Contents 1、Overview .................................................................................................................19 2、Module Default Parameters .................................................................................19 3、Application Area....................................................................................................20 4、Power consumption parameters...........................................................................
DX-BT24 蓝牙技术手册 1．Overview DX-BT24 5.1 Bluetooth module is built by Shenzhen DX-SMART Technology Co., Ltd. for intelligent wireless data transmission. It uses the British DAILOG 14531 chip, configures 256Kb space, and follows V5.1 BLE Bluetooth specification. Support AT command, users can change the serial port baud rate, device name, pairing password and other parameters as needed, flexible use. This module supports UART interface and supports Bluetooth serial port transparent transmission.
DX-BT24 蓝牙技术手册 3．Application area: DX-BT24 module supports BT5.1 BLE protocol, which can be directly connected to iOS devices that have BLE Bluetooth function, and supports background program resident operation.
DX-BT24 蓝牙技术手册 6．Transparent transmission parameters Data throughput: Android ->BT24 -> UART Baud rate UART ->BT24 -> Android 115200 Baud rate 115200 Connection interval (ms) 15 Connection interval (ms) 15 Serial packet size (bytes) 230 Serial packet size (bytes) 320 Transmission interval (ms) 20 Transmission interval (ms) 20 Throughput (bytes/s) 10120 Characteristic Write Write without Response Throughput (bytes/s) Characteristic Notify iPhone 6 ->BT24 -> UART Baud rate 10626 Notify
DX-BT24 蓝牙技术手册 8．Pin function description: Pin number Pin name Pin description 1 P0_6 Serial data output 2 P0_7 Serial data input 3 NC NC 4 NC NC 5 NC NC 6 NC NC 7 SWDIO Debug data port 8 SWCLK Debug clock port 9 SWDIO Connected to pin 7, IO port can be customized 10 SWCLK Connected to pin 8, IO port can be customized 11 Reset Reset（Input 200ms low level pulse） 12 VCC V3.
DX-BT24 蓝牙技术手册 9．Detailed description of function pins: 1、16 feet (P0_8): LED indicator pin ·Used to indicate the status of the Bluetooth module, the LED flashing mode corresponds to the status of the Bluetooth module, see the table below： LED display Module status Flashes slowly and evenly(1s-on,1s-off) standby mode Module Slave module Bright 3s Extinguish 50ms(3s-on,50ms-off) Connection Status Light off in low power mode 2、Pin 17 (P1_11): connection status indication pin Pin status Module status
DX-BT24 蓝牙技术手册 10．Dimensions: 11．LAYOUT Precautions: The DX-BT24 Bluetooth module works in the 2.4G wireless band. It should try to avoid the influence of various factors on the wireless transceiver. Pay attention to the following points: 1. the product shell surrounding the Bluetooth module to avoid the use of metal, when using part of the metal shell, should try to make the module antenna part away from the metal part. 2.
DX-BT24 蓝牙技术手册 3. The antenna part of the module should be placed around the PCB of the carrier board. It is not allowed to be placed in the board, and the carrier board under the antenna is slotted. The direction parallel to the antenna is not allowed to be copper or traced. It is also a good choice to directly expose the antenna part out of the carrier board. 4. It is recommended to use insulating material for isolation at the module mounting position on the substrate.
DX-BT24 蓝牙技术手册 12. AT COMMAND (Note: AT command mode when the module is not connected) 1. AT command, which belongs to the character line instruction, is parsed according to the line (that is, AT command must be returned by carriage return or \r\n, hexadecimal number is 0D0A) 2. The AT command supports case and the instruction prefix is AT+, which can be divided into parameter setting instructions and read instructions. 3.
DX-BT24 蓝牙技术手册 1、Test Command: Function Command Response Test instructions AT \r\n OK\r\n Description 2、Get The Software Version: Function Command Response Description Query version number AT+VERSION\r\n +VERSION=\r\n Software OK\r\n version number Note:The version will be different depending on different modules and customization requirements. 3、Query Module Bluetooth MAC: Function Command Response Description Query module MAC AT+LADDR\r\n +LADDR=\r\n
DX-BT24 蓝牙技术手册 4、Set/Query Device Name: Function Command Response Description Query module Bluetooth AT+NAME\r\n +NAME=\r\n Bluetooth name name, up to 20 bytes Set the module AT+NAME\r\n Bluetooth name >\r\n OK Default name: BT24 Example: 1. Send Settings: AT+NAME=DX-BT24\r\n ——Set module device name：“DX-BT24” return： +NAME=DX-BT24\r\n ——Set module device name：“DX-BT24” successed OK\r\n 2. Send inquiry： AT+NAME\r\n ——Query module name return： +NAME=DX-BT
DX-BT24 蓝牙技术手册 Set the module baud AT+BAUD\r\n +BAUD=\r\n OK\r\n corresponding serial number 1:2400 2:4800 3:9600 4:19200 5:38400 6:57600 7:115200 Default：3(9600) Note: The module must be re-powered after setting the baud rate, enabling the new baud rate for data communication and AT command resolution. Example: Setting the Serial Port Baud Rate: 57600 1. Send Settings: AT+BAUD6 \r\n return： +BAUD=6\r\n OK\r\n 2. Send inquiry： AT+BAUD?\r\n return： +BAUD=6\r\n OK\r\n 7、Set/Query - Serial Por
DX-BT24 蓝牙技术手册 Default：0 9、 Set/Query—Notify the host computer connection status : The connection success module returns OK+CONN： Function Command Response Query status AT+NOTI\r\n +NOTI=\r\n Set status AT+NOTI\r\n m>\r\n OK Description < Param> Check Digit 0- Not notified 1- Notice Defaults：0 10、 Set/Query—Notification connection with address code: The connection success module returns OK+CONN0x112233445566： Function Command Response Description Notification connec
DX-BT24 蓝牙技术手册 Query module AT+CHAR\r\n +CHAR=\r\n notify\write UUID Set module notify \write UUID notify\write UUID AT+CHAR +CHAR =\r\n \r\n OK Default：FFE1 (This UUID is a 4-digit hexadecimal number) Note: This channel is a readable and writable channel (ie it can be read or written) Example: Set the notify \write UUID to：FE01 1. Send settings： AT+CHAR0XFE01\r\n return： +CHAR= FE01r\n OK\r\n 13、Settings\Query—WRITE UUID： Function Command Query module write AT+WRITE\r\
DX-BT24 蓝牙技术手册 AT+ADVI\r\n Set Broadcast time interval + ADVI=\r\n OK 2—211.25ms 3—318.75ms 4—417.5ms 5—546.25ms 6—760ms 7—852.5ms 8—1022.5ms 9—1285ms A—2000ms B—3000ms C—4000ms D—5000ms E—6000ms F—7000ms Default：5 Note: This instruction can be used to reduce power consumption 16、Settings\Query - Module transmit power: Function Command Response Query module transmit AT+POWE\r\n +POWE=\r\n AT+POWE +POWE=\r\n \r\n OK\r\n power Set module transmit power Descriptio
DX-BT24 蓝牙技术手册 1:Open APP AT command OK Default：0 Note: This command opens the user to send AT commands with APP （Note: APPAT command can only be enabled through UART; if you need to enter transparent transmission mode, you need to set to disable APP AT command.） 18、Settings\Query—Bluetooth device type： Function Command Query Bluetooth AT+TYPE\r\n Response +TYPE=\r\n : 0x0000:No types pecified device type 0x0040:Phone type Set Bluetooth device type Description AT+TYPE\ +TY
FCC Statement FCC standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Integral antenna with antenna gain 2.5dBi This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
