آر اف (فرکانس رادیویی) و بی‌سیم ماژول‌ فرستنده‌گیرنده و مودم آر اف

Product Attributes

Introduction

The DL-CC2541 is a low-power Bluetooth 4.2 module. This BLE module operates in both bridge mode and direct-drive mode, featuring a universal UART interface that supports full-duplex bidirectional communication. Upon startup, the module broadcasts automatically, and mobile devices with the designated APP will scan and connect to it. Once connected, monitoring can be performed via the BLE protocol. In bridge mode, the user CPU communicates with mobile devices through the module's UART port; users can also manage and control certain communication parameters via specific AT commands over the serial interface. The specific meaning of user data is defined by the upper-layer application. Mobile devices can write data to the module via the APP, and the written data is forwarded to the user CPU through the serial port. When the module receives a data packet from the user CPU's serial port, it automatically forwards it to the mobile device. In this development mode, users are responsible for both the main CPU code design and the mobile APP code design on the smart mobile device. In direct-drive mode, users perform simple peripheral expansion on the module. The APP directly drives the module via the BLE protocol, enabling smart mobile device monitoring of the module. In this software development mode, users are only responsible for designing the APP code on the smart mobile device.

Features

• Easy to use — no Bluetooth protocol stack experience required
• Universal UART interface with full-duplex bidirectional communication; minimum baud rate 4800bps
• Bridge mode and direct-drive mode supported
• Default 20ms connection interval for fast connection establishment
• Module MAC address retrieval via AT command software reset
• Bluetooth connection interval adjustment and forwarding rate control via AT commands
• AT command support for TX power adjustment, advertising interval modification, custom advertising data, custom device ID, data delay configuration, UART baud rate modification, and module name change — all settings retained after power-off
• Serial packet length: any length up to 200 bytes
• High-speed transparent transmission and forwarding up to 4K/S; stable operation at 2.5K–2.8K
• Mobile app support for module name, UART baud rate, product ID, custom advertising content, and advertising interval modification — all settings retained after power-off
• Mobile app support for remote module reset and TX power configuration
• Mobile app support for Bluetooth connection interval adjustment
• Full IO expansion including debug port
• Flexible configuration of connection status and advertising status indicator pins / general-purpose IO
• Six bidirectional programmable IOs with external interrupt trigger input detection; full low-power operation
• Two programmable timer single/cyclic toggle output ports
• Two ADC inputs with enable/disable support and configurable sampling period
• Four programmable PWM outputs
• Continuous RSSI acquisition on the module side — readable and auto-notifiable to app; enable/disable supported with configurable sampling frequency
• Battery level indication, readback, and automatic reporting supported
• Anti-hijack password setting, modification, and reset supported

Applications

• Smart home control
• Industrial sensor data acquisition
• Wearable devices
• Remote toy control
• Asset tracking and anti-loss alerts