• Introduction
  • Features
  • Hardware Specifications
  • Dimensions
  • Layout
  • Interfaces
  • Application
• Basic Usage
  • Management Software
    • Connection with a PC
    • Initial Setup and Certificates
    • Firmware Upgrade
  • Reset
• MQTT Usage
  • Preparation
    • File System
    • AT Commands
    • Connecting Devices
  • MQTT Settings
    • Topic and Message Buffer
    • Timeout
    • Connection Flags
    • Connection Payload
    • QoS
  • Connecting to Broker
  • SUBSCRIBE
  • PUBLISH
  • Reading Messages
  • Etc.
    • Reading the Client ID
    • Setting Short Response
• Advanced
  • ATC & MQTT Settings
  • Activating PHPoC Engine
  • Advanced AT Commands

Device Connection

1. LAN connection and configuration

Connect P4M-440G to an internet-enabled network and, if necessary, configure the IP address.

2. UART connection and configuration

Connect the user's MCU or microcontroller to P4M-440G's UART0 port and configure it as follows:

• 19200 bps, No-parity, 8-data bit, 1-stop bit

3. Ready for AT command input

Prepare the user's MCU or microcontroller to input AT commands via P4M-440G's UART.