Solved - Help Need - Using media buttons

[SuperNinja-4965]

I am not sure if this is the right place to be asking this but here goes!
I am using the tinyusb library with my Raspberry pi pico. i have a button connected to the pico. When the button is pressed a subroutine is called which uses tud_hid_keyboard_report to press a key on the keyboard.
All is working fine, I can do key combinations type sentances etc.

But what i cannot work out is how to use/ press media keys. I would like my button to say for example pause my music when i press it. (I am using the hid_composite example with modifications to use my button)
Is there a way to do this. I am new to TinyUSB and so i have probably missed something here.

When i search through the TinyUSB Repo i find HID_USAGE_CONSUMER_PLAY_PAUSE so i assume it is possible somehow.

[SuperNinja-4965]

You can probably guess this but i am coding the pico in c/c++

[hathach]

For media control, you need to use the Consumer Control hid profile, I will update the hid_composite example to also send the volumn down key for demonstration. For environment, it shouldn't be issue with either pico sdk or not, I prefer to compile and run the stock example here, since it is my normal routine to test cross-platform example on multiple mcus.

[SuperNinja-4965]

thanks very much!

[hathach]

@joshuag1000 check out the modification in the hid_composite example. #622 , you could quickly test it out without compiling by downloading the rp2040 artifacts file from the ci build https://github.com/hathach/tinyusb/actions/runs/527018529

[SuperNinja-4965]

Ok so i have merged your code with mine and that volume key down example works brilliantly! I think i understand how the code works better now!
Thanks!

[SuperNinja-4965]

@hathach ok i dont know if this is an issue with my code or no but when i change the key to either or the next track or previous track buttons spotify goes crazy and starts skipping tracks in that direction with no end until i unplug the device.

[SuperNinja-4965]

actually i think that is because i am using HID_USAGE_CONSUMER_SCAN_NEXT. Which i am guessing is supposed to do that?? Is there a way i can have it so i only skip one track?

[SuperNinja-4965]

Turns out there was a little instability in my code causing that. Its all patched up!
TYSM for the help!