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User Manual

HLK-B40

RECONNI

Bluetooth

automatically

re-connects

when the

module is the

host

Integer, unit s
0: Represents only one
attempt to connect at startup,
not a reconnect
1 to 60: The connection is
automatically reconnected
after a specified number of

send

response

AT+RECONNI=?

AT+RECONNI=0
OK

send

response

AT+RECONNI=10

AT+RECONNI=10
OK

UUIDS

Bluetooth

transmission

service UUID

32 hexadecimals

Default

：

0000fff00000100080000080
5f9b34fb

UUIDR

Read feature

UUID in

transmission

service (module

transmite, APP

receive)

32 hexadecimals

Default

：

0000fff10000100080000080
5f9b34fb

UUIDW

White feature

UUID in APP

transmission

(APP receive

module

transmite)

32 hexadecimals

Default

：

0000fff20000100080000080
5f9b34fb

Table 6 AT command list and description

Содержание HLK-B40

Страница 1: ...Shenzhen Hi Link Electronic co Ltd HLK B40 Master slave integrated Bluetooth transparent transmission module User Manual Version V1 2 Verified 2020 10 31 Copyright Hi Link...

Страница 2: ...command mode 8 4 3 Description of the input and output pin functions 9 4 4 Bluetooth device roles and connections 9 5 A quick start guide 10 5 1 Test the debug base plate 10 5 2 Quickly verify blueto...

Страница 3: ...information passively waiting for the connection Bluetooth broadcast Bluetooth from the machine device through periodic broadcasting so that the surrounding host equipment can scan and identify themse...

Страница 4: ...ata Based on BLE5 1 it is faster and has a longer transmission distance and can reach 40 to 100 m in an open environment Supports low power modes sleep currents of up to6 A and custom connection and b...

Страница 5: ...the 10 GND GND Power source 11 VDDIO Keep the functionality 12 PD7 Keep the functionality 13 PD6 Keep the functionality 14 PD5 Keep the functionality 15 PD4 Keep the functionality 16 PC7 O Module Slee...

Страница 6: ...ication circuit reference of this module if you need more functions please refer to the module manual or contact our engineers to assist Figure 2 Basic minimum circuit disables low power sleep functio...

Страница 7: ...e about complex Bluetooth protocol stack and RF circuit just a simple serial port transmission data can be transmitted directly on the Bluetooth wireless connection Transmission is short for transpare...

Страница 8: ...st devices is also forwarded to the serial port from the machine module Figure 5 A map of the many to one Bluetooth connection transmission function 4 2 Module operating mode transmission and AT comma...

Страница 9: ...lows Figure 6 A diagram of the conversion logic of the transmission mode and the AT command mode 4 3 Description of the input and output pin functions Name Chip pin Description Reset key input RESET H...

Страница 10: ...lected slave device identified by the MAC address and Maintain the connection and play a leading role in a Bluetooth connection The slave broadcasts its own information such as the device name etc The...

Страница 11: ...tically reconnect and reconnect if the slave is not found or the connection is disconnected The interval time can be set by the AT RECONNI command the default is 5s that is when it is not connected it...

Страница 12: ...st APP on the mobile phone the APP will automatically search for surrounding Bluetooth devices and display them in a list Click the Bluetooth device name corresponding to the module in the device list...

Страница 13: ...power consumption but the greater the delay Turn on auto sleep 6 A After the automatic sleep function is turned on the module can be controlled by the input level of the external sleep control input...

Страница 14: ...d on 7 AT command 7 1 ATinstruction format description All at instructions are in ascii string format and end with carriage return Power failure will not be lost after setting All settings will take e...

Страница 15: ...y send response AT MAC AT VER 1 03 20092421 OK 2 MAC MAC address Read only send response AT MAC AT MAC 112233445501 OK 3 DEFAULT Restore the default configuration 1 Send response AT DEFAULT 1 AT DEFAU...

Страница 16: ...e sleep state according to the control of the level of the SLEEPEN input pin send response AT SLEEPEN AT SLEEPEN 0 OK send response AT SLEEPEN 1 AT SLEEPEN 1 OK 10 CONNI Bluetooth Connection interval...

Страница 17: ...DE 123456 OK 16 PEERMAC When the module is the master it automatically goes to the MAC address of the slave MAC address 12 hexadecimal numbers send response AT PEERMAC AT PEERMAC AABBCC000001 OK send...

Страница 18: ...NI AT RECONNI 0 OK send response AT RECONNI 10 AT RECONNI 10 OK 20 UUIDS Bluetooth transmission service UUID 32 hexadecimals Default 0000fff00000100080000080 5f9b34fb 21 UUIDR Read feature UUID in tra...

Страница 19: ...structions 9 OTA functionality In the mobile phone APP through Bluetooth wireless upgrade module firmware the specific operation please refer to the HLK B40 Bluetooth transmission module mobile phone...

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