Domestic HLK-B40 Bluetooth software fixed frequency software

littleshrimp

Domestic HLK-B40 Bluetooth software fixed frequency software [Copy link]

HLK-B40 is a BLE5.1 serial port transparent transmission module produced by Hailing Technology. The price is about 5 yuan on Taobao. The operation is very simple, with only a few AT commands. When testing FCC, you need to fix the transmission frequency, so you need to flash the official fixed frequency firmware (in the attachment below).

Below are the operating instructions for the fixed frequency firmware:

UART: PA2-RXD, PA3-TXD
AT#TAaa_bb_cc 测试带数据的
AT#TBaa_bb_cc 测试空载波
AT#TC退出测试
aa是信道（十六进制）；
bb是payload，一般配置00就好；
cc是发射功率，00~3f（过认证时注意把功率控制在10dBm内）
1M带宽带载举例： 
空载波2402M定频发射：AT#TA00_00_15
空载波2440M定频发射：AT#TA13_00_15
空载波2480M定频发射：AT#TA27_00_15
1M带宽空载举例:
空载波2402M定频发射：AT#TB00_00_15
空载波2440M定频发射：AT#TB13_00_15
空载波2480M定频发射：AT#TB27_00_15
2M带宽空载举例： 
空载波2402M定频发射：AT#TH00_00_15
空载波2440M定频发射：AT#TH13_00_15
空载波2480M定频发射：AT#TH27_00_15
2M带宽带载举例：
空载波2402M定频发射：AT#TG00_00_15
空载波2440M定频发射：AT#TG13_00_15
空载波2480M定频发射：AT#TG27_00_15

Instructions and other official website information:

B40蓝牙透传模块使用手册 V2.0 20230724.pdf (1.28 MB, downloads: 1)

HLK-B40蓝牙透传模块手机APP使用说明.pdf (699.1 KB, downloads: 1)

HLK-B40底板PCB原理图.zip (665.64 KB, downloads: 1)

HLK-B40_Demo（APP源码）.zip (13.12 MB, downloads: 2)

B40-iOS.zip (1.48 MB, downloads: 0)

HLK-B40 Config Tool V1.0 210111.exe (1.94 MB, downloads: 0)

Fixed frequency firmware:

b40_optimize_1M_2M.bin (13.4 KB, downloads: 0)

xyxlyfswbl

Sorry, as a beginner in electronic circuits, I can't give a high-quality answer. I can only watch silently QAQ

damiaa

It would be nice if I could write some code in it. This price is still good.

Domestic HLK-B40 Bluetooth software fixed frequency software [Copy link]

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