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Table of Contents
Related Manuals for Hi-Link HLK-B20
Summary of Contents for Hi-Link HLK-B20
- Page 1 Shenzhen Hi-Link Electronic Co., Ltd. HLK-B20 User Manual BLE 4.2 wireless module...
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Page 2: Table Of Contents
Contents 1. Product description............................1 1.1. Basic parameters..........................1 2. Product Overview............................2 2.1. Technical specifications........................2 Table 2-1 Product Specifications...................... 2 2.2. Hardware description......................... 2 2.3. Block diagram............................ 3 2.4. Default pin function........................... 3 3. Test board description...........................4 3.1. Restore factory settings........................4 4. -
Page 3: Product Description
Manual 1. Product description HLK-B20 is an new low-consumption Bluetooth BLE 4.2 control module made by Hi-Link. This product is a Bluetooth-compliant module based on universal serial interface. It has built-in BLE 4.2 protocol stack, which can realize data conversion between user serial port and Bluetooth interface. -
Page 4: Product Overview
HLK-B20 Shenzhen Hi-Link Electronic Co., Ltd. Manual 2. Product Overview 2.1. Technical specifications Table 2-1 Product Specifications Transfer Protocol Bluetooth standard : BLE 4.2 Supply voltage 0.9-3.6V Air speed 1Mbps Number of channels Frequency Range 2400-2480MHZ Transmit power Receiving sensitivity... -
Page 5: Block Diagram
HLK-B20 Shenzhen Hi-Link Electronic Co., Ltd. Manual 2.3. Block diagram UART 3.3V 16MH HLK-B20 1 IPEX Connector RAM(20K) GPIO HLK-B20 Module architecture diagram Figure 2 2.4. Default pin function Network name Type Function description Default features RSTN Chip enable, high efficiency... -
Page 6: Test Board Description
Uart1_rxd port Uart1, Transparent transmission serial Uart1_txd port 3. Test board description The test board is mainly used to test the data transmission function of the HLK-B20's Bluetooth and serial ports. HLK-B20 USB to serial port HLK-B20 module test board Figure 3 3.1. -
Page 7: Function Description
In this mode, the BLE Bluetooth device transmits the data to the HLK-B20 module via Bluetooth, and the HLK-B20 module sends the received data from the serial port. When the serial port gets data, the HLK- B20 sends the serial port data from the Bluetooth terminal to realize the conversion of serial data and Bluetooth data. -
Page 8: Led Light Indication Meaning
HLK-B20 Shenzhen Hi-Link Electronic Co., Ltd. Manual >Tes RESET <Trst AT Command Figure 6. RST Exit transparent mode Notes: Tes=100ms, Trst=6s 6. Led light indication meaning The status of the led connection module's P02 pin, corresponding to the sta led on the test board:... -
Page 9: Ver
HLK-B20 Shenzhen Hi-Link Electronic Co., Ltd. Manual Command list as below: Module Version uart Serial port configuration default Restore factory setting ble_name Bluetooth name net_commit Submit configuration parameters reconn Restart the serial port service ble_status Bluetooth connection status Reboot Restart the system 8.1.1. -
Page 10: Ble_Status
HLK-B20 Shenzhen Hi-Link Electronic Co., Ltd. Manual 8.1.5. ble_status Function Query Bluetooth connection status Format at+ ble_status =?\r Parameter 0: Not connected 1: Connected 8.1.6. ble_name Function Query Bluetooth connection status Format at+ ble_name =<blename>\r Parameter blename: Bluetooth name 8.1.7. default... -
Page 11: Configuration Tool Description
HLK-B20 Shenzhen Hi-Link Electronic Co., Ltd. Manual 9. Configuration Tool Description Figure 7 Configuration tool 1: Command window to be sent 2: Serial port number selection 3: Bluetooth name setting 4: Serial port parameters 5: Serial port return command 6: Submit configuration... -
Page 12: Bluetooth Data Transmission
HLK-B20 Shenzhen Hi-Link Electronic Co., Ltd. Manual 11. Bluetooth data transmission Bluetooth data transmission is that after the Bluetooth connection is successful, the module will send the data received from the Bluetooth by the serial port, and the data received from the module serial port will be sent out by the Bluetooth. - Page 13 HLK-B20 Shenzhen Hi-Link Electronic Co., Ltd. Manual Then input the sent data in the send box, click Send, the data will be received on the serial port, and the data sent by the serial port will be received on the app.
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Page 14: Reflow Soldering Temperature Curve
HLK-B20 Shenzhen Hi-Link Electronic Co., Ltd. Manual 12. Reflow soldering temperature curve When the module is over-fired, please strictly follow this temperature curve. If the temperature deviation of the reflow soldering is too large, the module will be damaged! Temperature setting (degrees Celsius) -
Page 15: Appendix A Document Revision History
HLK-B20 Shenzhen Hi-Link Electronic Co., Ltd. Manual Appendix A Document Revision History Version Revision Date Scope number 1.00 2019-4-15 13/13... - Page 16 2.2 List of applicable FCC rules FCC Part 15.247 2.6 RF exposure considerations This module certified that complies with RF exposure requirement under 5mm RF distance. 2.8 Label and compliance information FCC ID label on the final system must be labeled with “Contains FCC ID: 2AD56HLK-B20”...
- Page 17 FCC Warning 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. NOTE 1: This product has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
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