User's Manual

HF-A21-SMT Embedded WiFi Module User Manual
Shanghai High-Flying Electronics Technology Co., Ltd
www.hi-flying.com
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connected to the same wireless network. AT+instruction set configuration means user configure
parameters through serial interface command. Refer to “AT+instruction set” chapter for more
detail.
Notes:
High-Flying can customized the parameters setting as customer request and ship HF-A21-SMT
modules with these parameters as factory default configuration. It will reduce user‟s module
configuration time for mass production. Also, if user need different parameters setting for every
module, High-Flying can provide the auto-configuration tool to speed up the module
conguration duration. Please contact High-Flying technical interface to acquire this tool if required.
2.11. Firmware Upgrade
HF-A21-SMT module supports firmware upgrade online; User can upgrade firmware via web
access.