User's Manual

User Manual of HC-42 Bluetooth Serial Port Communication Module G
athering information and Carrying Dreams
Website：
http://www.hc01.com
Guangzhou HC Information Technology Co., Ltd
Address: Room 608, No.19, Jiangong Road, Tianhe Science Park, Tianhe District, Guangzhou City, Guangdong Province
Technical customer service QQ: 445253184 Sales hot line: 020-8408-3341
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5.3 Introduction of AT command
5.3.1 Test command
Command Response Explanations
AT OK Test
5.3.2 Viewing software versions command
Command Response Explanation
AT+VERSION OK+VERSION=HC-42 V2.0.180601 www.hc01.com Obtain software version and
official website address
5.3.3 Inquiring and modifying Bluetooth name command
Command Response Explanations Details
AT+NAME OK+NAME=HC-42 Inquiring Bluetooth name Default Bluetooth name: HC-42
AT+NAME=xxxx OK+NAME=xxxx Setting Bluetooth name
1. Only 12 characters or less are allowed.
2. This command does not filter any
characters. If Chinese characters are
required, trans-coding can be conducted
according to their own device format. (For
example, Android's character format is
UTF-8. If you want to search for Chinese
names with Android, you must enter them
according to UTF-8 encoding.)
Examples:
Send
：
AT+NAME=www.hc01.com Return: OK+NAME=www.hc01.com
（
Set Bluetooth name as www.hc01.com
）
Send
：
AT+NAME Return
：
OK+NAME=www.hc01.com
（
Inquire the Bluetooth name as www.hc01.com
）
5.3.4 Inquiring and modifying RF power command
command Response Explanations Details
AT+RFPM OK+RFPM=4 Inquire RF power of the module
Default RF power: 0dBm
AT+RFPM=xx OK+RFPM=xx Set RF power of the module
RF power value with parameters
of XX, supports the following
power value (unit: dBm):
4, 3, 0, -4, -8, -12, -16, -20, -40