Function Description

[中文版]

Default Configuration

Name

FSC-HC05

LE-Name

FSC-HC05-LE

Pin Code

1234

Secure Simple Pairing Mode

On

UART Baudrate

9600/8/N/1

GPIO Indicators

Module Operation Status

Pin

Status

Description

Pin 23

Low Level

/

Pin 23

High level

Bluetooth Disconnected

Data Transmission Mode

Pin

Status

Description

Pin 24

Low Level

Throughput Mode

Pin 24

High level

Command Mode

Module Operation Status

Pin

Status

Description

Pin 32

1Hz square wave

Bluetooth Disconnected

Pin 32

High level

Bluetooth Connected

BT Connection Status

Pin

Status

Description

Pin 33

Low Level

Bluetooth Disconnected

Pin 33

High level

Bluetooth Connected

Work Modes

Throughput Mode

  • Bluetooth Not Connected: Data received via UART is parsed as AT commands.

  • Bluetooth Connected: All data received via UART is sent as-is to the remote Bluetooth device.

Command Mode

  • Bluetooth Not Connected: Data received via UART is parsed as AT commands.

  • Bluetooth Connected: Data received via UART is still parsed as AT commands. Data must be sent to the remote device using AT commands, e.g., AT+SPPSEND.

GATT Service

Type

UUID

Operation

Description

Service

0xFFF0

Throughput transmission service

Write

0xFFF2

Write,
Write Without Response

APP to Module

Notify

0xFFF1

Notify

Module to APP