sending media keys over the keyboard HID

RE: sending media keys over the keyboard HID

Jay — Fri, 06 Jun 2014 11:33:41 GMT

Hi Damian, Glad to know my project did some help. Good luck!

RE: sending media keys over the keyboard HID

Damian — Tue, 03 Jun 2014 12:03:45 GMT

hey jay, you're a champion! Thanks so much, that worked nicely. i was able to modify your code to suit my own hardware. My next step is to try to incorporate the other media keys. But you've given me a huge help with your working example.

RE: sending media keys over the keyboard HID

Damian — Mon, 02 Jun 2014 12:24:29 GMT

sorry Jay, been very busy, and haven't had a chance as yet to test it out.

hopefully in the next couple of days. i will let you know thanks for your interest, Damian

RE: sending media keys over the keyboard HID

Jay — Mon, 02 Jun 2014 09:20:09 GMT

Hi, Just stop by to ask if my project works in your environment. As for the xml file, I would update it as soon as possible. Jay

RE: sending media keys over the keyboard HID

Damian — Fri, 30 May 2014 02:27:35 GMT

Hi Jay,

that's awesome.

thanks so much for posting that. Would you also be willing to share your nRFgo studio file and report map.

i'm just interested in why this isn't working for my code.

kind regards, Damian

RE: sending media keys over the keyboard HID

Damian — Fri, 30 May 2014 02:24:31 GMT

hey tim,

thanks for the info - good to know

RE: sending media keys over the keyboard HID

Jay — Mon, 26 May 2014 08:14:04 GMT

Hello Damian,

This is Jay from Monolith Studio. I've created an open source project using Arduino+BLE Shield, which implements sending volume up message to IPhone. Please visit our github for more detail. github.com/.../BLEShield_shutter

RE: sending media keys over the keyboard HID

Tim — Wed, 21 May 2014 16:06:11 GMT

If you are making a BLE music remote control, I have already made one. I started off with the HID keyboard approach, but there is a fatal flaw, at least on Android - if you are connected to a bluetooth keyboard Android will never show the software keyboard.

Therefore I switched to a custom BLE service and a companion app on the phone. Not as elegant, but it works. I can't remember if I ever got the media keys to work.

RE: sending media keys over the keyboard HID

Damian — Wed, 21 May 2014 15:31:51 GMT

Hi, thanks for your response.

Ok i wasn't changing the Report reference characteristic.

what should these values be set to?

if i look at the HID_mouse example, the values appear to be 0101 and 0201 for ID1 and ID2.

the original keyboard value was 0002

thanks, Damian

RE: sending media keys over the keyboard HID

Damian — Wed, 21 May 2014 15:20:33 GMT

Hi Jay, thanks for your response.

this was a copy and paste from the HID_mouse example, so i just assumed that the report size and count was correct, but you could be right. Looking at the size it appears to be set to 1 bit, but i require sending 1 byte.

Is this how you interpret it? i think i've got a lot more reading to do.

thanks, Damian

RE: sending media keys over the keyboard HID

David Edwin — Wed, 21 May 2014 10:11:35 GMT

I would suggest that you change the keyboard input report to Report ID of 1 since you are adding a new input report. The media keys should then be made Report ID 2 (input report).

You may also want to change the output report to have a Report ID of 1 (output report).

You need to update the USB descriptor and the Report Reference characteristic descriptor with the above details.

Let me know if any of the suggestions help.

RE: sending media keys over the keyboard HID

Jay — Wed, 21 May 2014 05:32:42 GMT

Hi Damian,

I took a look at your HID report map. In the report ID 2, where you are trying to add advanced keys, I didn't see the report count and size set to your control usage(e.g. VolumeUp).

For your question

- how many bytes do i need to send (i notice the max is set to 3) For this question, I would suggest you read some related material about HID device. Or a quick and alternative way is taking careful look at the report map in report ID 1 about the report size and count. In Nordic's example for keyboard, you would have to send a 8-byte array. Because there are eight counts of size 8 reports.

And from my point of view, both of your questions are actual the same one. Hope it helps.

Jay

RE: sending media keys over the keyboard HID

Damian — Mon, 19 May 2014 14:32:05 GMT

Hi,

thanks for your quick response.

Yes i have seen that video, and i believe i have implemented the report map correctly. i've now attached the nRFgo studio file.

The keyboard part of it is working correctly, only the added media keys that are not working.

my query is more around the transmission of the data once paired. If you look at my function to send the data, i'm not sure if i'm sending the correct number of bytes, and if the data should be in the first byte, or second byte, etc.

Or i could be completely wrong, like i said, i'm new at this.

thanks again, Damian

hid_keyboard_with_media_keys.xml

RE: sending media keys over the keyboard HID

David Edwin — Mon, 19 May 2014 13:47:30 GMT

Did you take a look at the word document and the video posted in the github.com/.../ble_HID_template