When I use nRF52832, How to send volume down keycode when connect with android device?

[Moris]

Hi All.

I have one question. I just want to send "volume down key" simplely after connect with android device to take a picture.

I have no idea. and I don't understand "ble_hids_inp_rep_send" API.

So, I want that anyone will share some example source code or function.

Please help to share some example code.

Thanks.

[FormerMember]

This example shows how to send "volume down key" (consumer control). The example is made for nRF51, but the code for sending the "volume down key" using nRF52 will be the same/very similar.

[Moris]

Hi Thanks for your help. I checked your recommand source code. and then did test it. But, I met a problem.

The problem is that "ble_hids_inp_rep_send" function always returns "NRF_ERROR_INVALID_STATE". So, Device will be reset through "APP_ERROR_CHECK" function.

Honestly, I don't have any idea. what can I do to solve this issue? Please help to kindly answer me.

[Moris]

Hi I solved it!.

[pettern]

Specifically how did you solve this issue? I am experiencing the same problem.

[run_ar]

@pettern: Please consider creating a new question. Regardless, the invalid state error usually happens if the peer didn't enable notifications.