HF-BL200A Low Energy Bluetooh
（
BLE 4.1
）
Module User Manual
Shanghai High Flying Electronics Technology Co., Ltd www.hi-flying.com
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4. UART AT COMMAND DEFINITION
4.1.
Module Operation Mode Configure
After HF-BL200A power on, module enter transparent transmit mode, default UART
configuration parameter is as below:
Figure 7.
HF-BL200A Default UART Parameter
User can configure the module via AT command through UART or use Evaluation Kit to test.
Evaluation kit refer to Appendix B.
<Description>
：
AT
command debug tool recommend use “ friend serial debug assistant” and
SecureCRT tool ,which can be download from company website.
4.2.
AT
：
Command Overview
AT: command can be inputted via serial debug tool or compile as below photo shows, AT:HELP is
a help command, list all commands and description.
Remark: the end of each command need add return or line feed character.
