Product Introduction

HLK-B42 is a Bluetooth serial port and CAN based on BLE5.3 developed and produced by Hi-link Electronics bidirectional transparent transmission module. This module enables various devices with CAN interfaces to conveniently and efficiently achieve Bluetooth wireless communication data transmission and reception.

This product can be set as a Bluetooth slave device for use, and the slave supports being connected by multiple hosts simultaneously.

By using the CAN Bluetooth bidirectional transparent transmission function of this module, users do not need to understand the complex Bluetooth protocol stack, simply connect the customer's device or MCU's CAN to this module, and the module will automatically complete CAN and Bluetooth (GATT) the bidirectional data forwarding between them acts as a bridge between the user's CAN bus and Bluetooth devices, enabling users to add Bluetooth wireless transmission function to CAN devices.

Support AT command mode, which can query or set the basic parameters of the module through serial port or Bluetooth AT command, such as device name, serial port baud rate, etc.

This module provides rich testing tools and user documentation, including a mobile app demo, which is convenient for users to use quickly get familiar with and apply this module quickly. The module has abundant on-chip resources and external pins, which can be customized for customers' needs provide flexible and in-depth customized software and hardware development services based on individual needs.

The schematic diagram of the transparent transmission function is as follows

Product Characteristics

1. Dual core processor architecture

   ① MC1 (CM33) core, with a maximum clock frequency of 156MHz, supports FPU and DSP instruction sets, serving as the main processor nuclear application processor;

   ② 32-bit RISC core, clock speed 48MHz, built-in independent SRAM, running Bluetooth protocol stack;

• As a Bluetooth protocol core coprocessor

• Fast and stable Bluetooth CAN transparent transmission, CAN baud rate of 50K~1Mbps

• Based on BLE5.3, it has faster speed, longer transmission distance, and can reach 40-100m in open environments

• Support wireless configuration module parameters

• Default onboard high-quality antenna to improve transmission distance, external antenna can also be selected

• Built in Watchdog, reliable for long-term operation

• Wide operating voltage of 2.9~3.6V, typical value of 3.3V