BLE HID Keyboard can not be used in win7

[Michael_Lee]

Hi Nordic:

        I want to consult one question about "BLE HID Keyboard". I am trying  to use the product---nRF52832 to make the "BLE HID Keyboard".

        Then I download the source "nRF5_SDK_12.3.0_d7731ad" from Nordic official website, and compiled the example---"ble_app_hids_keyboard" in Keil 5 without any modification.

       

       

       

        nRF52832 run the program successfully, and it can connect to android device and their communication is successfully.

       

        when it broadcast to win7 computer, the computer can scan it and make a connection. But I can not find any services or function in the "Nordic_Keyboard" 's equipment properties.

        So when the "Nordic_Keyboard"  device sends a report, win7 computer has no response.

        

        (left picture means Nordic_Keyboard was add to computer)     (right picture means computer can not find any BLE service in Nordic Keyboard)

      By the way, I buy a BLE4.0 Keyboard online and compare it with nRF52832 Nordic_Keyboard.  The test shows that BLE4.0 Keyboard can work well in win7 computer.

      So I want to know how to modify the code in "nRF5_SDK_12.3.0_d7731ad" to help nRF52832 Nordic_Keyboard work successfully in win7 ?

      Thank you !

[run_ar]

Win7 does not have native support for BLE, so you need to install a driver for this to work with a BEL HID keyboard. Are you sure the other keyboard you are testing is the bluetooth low energy keyboard? And what drivers are you using?

Also note that if you are just starting to use the nrf52832 for development I would recommend you use our latest sdk, v15.

[Michael_Lee]

Thank you for your answer. I do use BLE4.0 keyboard and mouse in win7 computer and they work well. So I think the win7 computer has right driver for BLE4.0 HID device.  By the way, I also use the CSR4.0 dongle and its driver for win7. Those BLE4.0 keyboard and mouse also work well.

Actually, I use "nRF5_SDK_15.0.0" for nRF52832 test at the beginning . Then I use other SDK for test too. But they have the same problem.

[run_ar]

Could be that the driver do not understand our report map, do you have a sniffer trace that shows what is happening when you try to connect to the nordic sdk HID device. Note that the HID interface is most likely the same our most SDK revisions so I would expect the behavior to be similar in that sense.

[Michael_Lee]

I think Nordic can make a test for this problem that is very easy to be found.  I am very curious that why other BLE 4.0 keyboard can be used in win7 but Nordic Keyboard. According to your advice, I use the sniffer dongle to check the Bluetooth connection process. The test file is in the attachment.  I hope Nordic can help me solve this problem. Thanks !

BLE Analysis By Sniffer.zip

[run_ar]

As you know windows 7 does not have native support for BLE, so it is entirely up to the vendor of the ble solution you are running on your windows machine to provide this functionality. I am afraid there is not much we can do if the CSR dongle you are testing with doesn't have proper HID support. Unfortunately, the log you provided did not help as the traffic was not decrypted. I assume MITM protection is on, which means the sniffer cannot decrypt.