Add bluetooth remote control via GPIO #101

AlexProgrammerDE · 2020-02-08T11:50:25Z

Change-type: major

Hi everyone! With #83 becomes balena-sound to a multi speaker project. But i think a good speaker has its own on-board music and volume control buttons. Here is a example:

Roadmap: (At the top are the more important things. )

finished:

Find a bluetooth remote control service (Bluealsa itself: https://github.com/Arkq/bluez-alsa#configuration--usage)
Make this feature 100% optional (It should be able to deactivate it 100%.)
Rename bluetooth-audio to bluetooth
Decide, which GPIO pins should be used ((Pin) Input: 11, 13 and 15 Output: 1, 17 and 4)
Delete buffer
Implement the bluetooth remote control service
Allow discovering via a button
Add skipping in both directions
Write README info

bugs:

@tmigone and @chrisys i will maybe need help from your side. If i run into some problems i will let you know in the comment section below.

Things i have to remember:
echo "$(amixer -D bluealsa scontrols)" | sed -n " s,[^']*'$[^']*$.*,\1,p "
VOLUME="$(amixer -D bluealsa get "$DEVICE" | awk '$0~/%/{print $5}' | tr -d '[]%')"
VOLUME_PARSED="$(echo "${VOLUME}" | head -1)"
https://askubuntu.com/questions/1113050/sending-pause-resume-playing-and-next-previous-track-bluetooth-commands
dbus-send --system --dest=org.bluez --print-reply /org/bluez/hci0/dev_$MAC_PARSED org.bluez.MediaControl1.Play > /dev/null

AlexProgrammerDE · 2020-02-10T15:53:01Z

@tmigone i have a problem. Are there any ways of communicating between the multi room devices. I had an idea: Pressing buttons on the client device is acting like pressing buttons on the server device itself.

chrisys · 2020-02-11T12:01:14Z

@AlexProgrammerDE great idea here! I think this is going to be an awesome addition to the project.

tmigone · 2020-02-12T15:13:34Z

@AlexProgrammerDE this looks awesome!

Regarding your question, you can send messages between devices using the fleet-supervisor. For example:

to broadcast a message: https://github.com/balenalabs/balena-sound/blob/master/fleet-supervisor/server.js#L42
to listen to that message: https://github.com/balenalabs/balena-sound/blob/master/fleet-supervisor/server.js#L33

You could do something like fleetPublisher.publish('bt-command', { command: 'whatever' })
Let me know if this helps.

EDIT: Now that i think of it, to use this you would need to migrate your control code to node. So i think it's fine if you focus on one device and once that is resolved we can look into the whole fleet.

AlexProgrammerDE · 2020-02-20T18:28:51Z

@chrisys and @tmigone i had an idea. 🌟 What are buttons without an case? https://github.com/balenalabs/boombeastic/ has its own cases. Could anyone create some 3D models? Buttons integrated would be needed.

chrisys · 2020-03-24T17:30:06Z

Hey @AlexProgrammerDE do you think this would work with the Pimoroni Pirate Audio HATs? Check out @Fiqq90 comment in #111

AlexProgrammerDE · 2020-03-24T17:45:36Z

Hi @chrisys
It should work, but which GPIO Pins are used by it? I didnt find any documentation.

AlexProgrammerDE · 2020-03-24T18:15:17Z

@chrisys i just saw the docs. I will look into it.

AlexProgrammerDE · 2020-03-24T18:35:02Z

@chrisys
So. The BCM pins are 5, 6, 16, and 20, but i have no HAT, so i cant test it.

chrisys · 2020-03-25T11:13:27Z

@Fiqq90 can you test this on your Pirate audio HAT and let us know how if it works?

AlexProgrammerDE · 2020-03-25T11:23:08Z

By the way @chrisys does the code work? I had it only tested with my Android phone. Does it work with IPhones?

chrisys · 2020-03-25T11:44:21Z

@AlexProgrammerDE I haven't had a chance to test yet

Fiqq90 · 2020-03-25T11:55:34Z

@chrisys @AlexProgrammerDE I would love to test it out, but unfortunately I am new to all this. Any guides to get me started on testing via PR? I assume that this latest update for the pimoroni has not been merged with the master that I can download?

AlexProgrammerDE · 2020-03-25T11:58:19Z

@Fiqq90 it is very easy to use my code. I made a fork of this repository on github. You can very easy download the zip file from there and push it like before.

AlexProgrammerDE · 2020-03-25T11:59:25Z

@Fiqq90 the url of my repository is: https://github.com/AlexProgrammerDE/balena-sound

Fiqq90 · 2020-03-26T03:20:33Z

@AlexProgrammerDE Pushed the files from your repo. Unfortunately the buttons still do not work for the pirate audio HAT. Buttons still does nothing to control spotify via bluetooth.

Fiqq90 · 2020-03-26T03:32:02Z

From the log screen, volume up is still GPIO17, bluetooth button -> GPIO27, volume down -> GPIO22.

Could we set the inputs to play/pause -> GPIO5, vol down -> GPIO6, next -> GPIO16, vol up -> GPIO20?

AlexProgrammerDE · 2020-03-27T13:39:37Z

@Fiqq90 i did already think of that case. I implemented it already. VOLUME_UP_GPIO, VOLUME_DOWN_GPIO and BLUETOOTH_GPIO are the enviroment variables for it. You can set them to the number of the GPIO. In your case: 5, 6, 16 and 20. But don´t use a number multiple times!

AlexProgrammerDE · 2020-03-31T17:39:31Z

@chrisys can you test it please and give me feedback? I am almost finished.

chrisys · 2020-04-01T11:02:31Z

@AlexProgrammerDE I will test it but need to find the hardware to put some buttons on a Pi first

AlexProgrammerDE · 2020-04-01T11:15:52Z

@chrisys it works with jumper cables too. I put many information to the Readme. That should help you to work with it.

Change-type: major

AlexProgrammerDE · 2020-04-10T12:47:59Z

@balena-ci retest

ghost · 2020-04-11T07:53:01Z

An error occurred whilst building your landr site preview:

        {
  "name": "JSONHTTPError",
  "status": 422,
  "json": {
    "errors": {
      "subdomain": [
        "must be unique"
      ]
    }
  },
  "message": "Unprocessable Entity",
  "stack": "JSONHTTPError: Unprocessable Entity\n    at NetlifyAPI.createSite (/usr/src/app/node_modules/netlify/src/open-api/index.js:162:15)\n    at processTicksAndRejections (internal/process/task_queues.js:97:5)\n    at async Object.exports.setupSite (/usr/src/app/lib/netlify.js:43:18)\n    at async Object.exports.run (/usr/src/app/lib/build-runner.js:82:7)\n    at async build (/usr/src/app/bot/index.js:104:19)\n    at async /usr/src/app/bot/index.js:156:23"
}

AlexProgrammerDE · 2020-07-02T11:25:14Z

@tmigone this PR is now open for about 4 months. Can we merge it soon?

AlexProgrammerDE · 2020-07-02T11:25:26Z

@balena-ci retest

tmigone · 2020-07-20T17:58:25Z

hey @AlexProgrammerDE sorry it took me so long, I'll work on testing this PR this week so we can have it in 2.x.

tmigone · 2020-07-22T15:32:25Z

bluetooth/bluetooth-control

+# Set up + volume
+if [[ ! -d /sys/class/gpio/gpio$VOLUME_UP_GPIO ]]; then
+  echo "$VOLUME_UP_GPIO" > /sys/class/gpio/export
+  sleep 1 
+fi
+echo "in" > /sys/class/gpio/gpio$VOLUME_UP_GPIO/direction
+
+# Set up bluetooth
+if [[ ! -d /sys/class/gpio/gpio$BLUETOOTH_GPIO ]]; then
+  echo "$BLUETOOTH_GPIO" > /sys/class/gpio/export
+  sleep 1 
+fi
+echo "in" > /sys/class/gpio/gpio$BLUETOOTH_GPIO/direction
+
+# Set up - volume
+if [[ ! -d /sys/class/gpio/gpio$VOLUME_DOWN_GPIO ]]; then
+  echo "$VOLUME_DOWN_GPIO" > /sys/class/gpio/export
+  sleep 1 
+fi
+echo "in" > /sys/class/gpio/gpio$VOLUME_DOWN_GPIO/direction
+
+# Set up next
+if [[ ! -d /sys/class/gpio/gpio$NEXT_GPIO ]]; then
+  echo "$NEXT_GPIO" > /sys/class/gpio/export
+  sleep 1 
+fi
+echo "in" > /sys/class/gpio/gpio$NEXT_GPIO/direction
+
+# Set up previous
+if [[ ! -d /sys/class/gpio/gpio$PREVIOUS_GPIO ]]; then
+  echo "$PREVIOUS_GPIO" > /sys/class/gpio/export
+  sleep 1 
+fi
+echo "in" > /sys/class/gpio/gpio$PREVIOUS_GPIO/direction
+
+# Set up utput gpio (there is one energy input missing)
+if [[ ! -d /sys/class/gpio/gpio$OUTPUT_GPIO ]]; then
+  echo "$OUTPUT_GPIO" > /sys/class/gpio/export
+  sleep 1 
+fi
+echo "out" > /sys/class/gpio/gpio$OUTPUT_GPIO/direction


We could eliminate a lot of code using a function here. Haven't tested it, but this should be ok:

Suggested change

# Set up + volume

if [[ ! -d /sys/class/gpio/gpio$VOLUME_UP_GPIO ]]; then

echo "$VOLUME_UP_GPIO" > /sys/class/gpio/export

sleep 1

fi

echo "in" > /sys/class/gpio/gpio$VOLUME_UP_GPIO/direction

# Set up bluetooth

if [[ ! -d /sys/class/gpio/gpio$BLUETOOTH_GPIO ]]; then

echo "$BLUETOOTH_GPIO" > /sys/class/gpio/export

sleep 1

fi

echo "in" > /sys/class/gpio/gpio$BLUETOOTH_GPIO/direction

# Set up - volume

if [[ ! -d /sys/class/gpio/gpio$VOLUME_DOWN_GPIO ]]; then

echo "$VOLUME_DOWN_GPIO" > /sys/class/gpio/export

sleep 1

fi

echo "in" > /sys/class/gpio/gpio$VOLUME_DOWN_GPIO/direction

# Set up next

if [[ ! -d /sys/class/gpio/gpio$NEXT_GPIO ]]; then

echo "$NEXT_GPIO" > /sys/class/gpio/export

sleep 1

fi

echo "in" > /sys/class/gpio/gpio$NEXT_GPIO/direction

# Set up previous

if [[ ! -d /sys/class/gpio/gpio$PREVIOUS_GPIO ]]; then

echo "$PREVIOUS_GPIO" > /sys/class/gpio/export

sleep 1

fi

echo "in" > /sys/class/gpio/gpio$PREVIOUS_GPIO/direction

# Set up utput gpio (there is one energy input missing)

if [[ ! -d /sys/class/gpio/gpio$OUTPUT_GPIO ]]; then

echo "$OUTPUT_GPIO" > /sys/class/gpio/export

sleep 1

fi

echo "out" > /sys/class/gpio/gpio$OUTPUT_GPIO/direction

function configure_gpio() {

local GPIO_PIN="$1"

local DIRECTION="$2"

if [[ ! -d /sys/class/gpio/gpio$GPIO_PIN ]]; then

echo "$GPIO_PIN" > /sys/class/gpio/export

sleep 1

fi

echo "$DIRECTION" > /sys/class/gpio/gpio$GPIO_PIN/direction

}

configure_gpio "$VOLUME_UP_GPIO" "in"

configure_gpio "$BLUETOOTH_GPIO" "in"

configure_gpio "$VOLUME_DOWN_GPIO" "in"

configure_gpio "$NEXT_GPIO" "in"

configure_gpio "$PREVIOUS_GPIO" "in"

configure_gpio "$OUTPUT_GPIO" "out"

tmigone · 2020-07-22T15:38:55Z

bluetooth/bluetooth-control

+VOLUME_UP_GPIO=$(</usr/src/volume_up_gpio)
+
+BLUETOOTH_GPIO=$(</usr/src/bluetooth_gpio)
+
+VOLUME_DOWN_GPIO=$(</usr/src/volume_down_gpio)
+
+NEXT_GPIO=$(</usr/src/next_gpio)
+
+PREVIOUS_GPIO=$(</usr/src/previous_gpio)
+
+OUTPUT_GPIO=$(</usr/src/output_gpio)


As I understand it, the other script writes the values into these files, and then this scripts reads the values.
Are the files used anywhere else? Can't we just have all done here and avoid the files alltogether?

tmigone · 2020-07-22T15:40:16Z

bluetooth/bluetooth-control

+while [[ "$(cat /sys/class/gpio/gpio$NEXT_GPIO/value)" == 1 ]]; do
+  if [[ "$SKIP_STOP" == 0 ]]; then
+  printf "Playing the next track. \n"
+  dbus-send --system --dest=org.bluez --print-reply /org/bluez/hci0/dev_$MAC_PARSED/player0 org.bluez.MediaPlayer1.Next
+  sleep 0.5
+  fi
+  SKIP_STOP="1"
+done
+
+SKIP_STOP="0"
+
+# Previous track
+while [[ "$(cat /sys/class/gpio/gpio$PREVIOUS_GPIO/value)" == 1 ]]; do
+  if [[ "$SKIP_STOP" == 0 ]]; then
+  printf "Playing the previous track. \n"
+  dbus-send --system --dest=org.bluez --print-reply /org/bluez/hci0/dev_$MAC_PARSED/player0 org.bluez.MediaPlayer1.Previous
+  sleep 0.5
+  fi
+  SKIP_STOP="1"
+done


Same as before, if the code is nearly identical we should try and use functions to reduce code (also easier maintenance!)

AlexProgrammerDE requested review from chrisys and tmigone February 8, 2020 11:51

AlexProgrammerDE mentioned this pull request Feb 10, 2020

Pushing is only working the secound time balena-io/balena-cli#1611

Closed

AlexProgrammerDE force-pushed the master branch from 9e70c4a to 25d8fb6 Compare February 11, 2020 17:49

This comment has been minimized.

Sign in to view

AlexProgrammerDE force-pushed the master branch from a62c297 to 1b3d55e Compare February 12, 2020 19:15

AlexProgrammerDE force-pushed the master branch from d0d58a9 to 11798d1 Compare February 20, 2020 19:13

AlexProgrammerDE changed the title ~~WIP: Add bluetooth remote control via GPIO~~ Add bluetooth remote control via GPIO Feb 20, 2020

AlexProgrammerDE force-pushed the master branch 2 times, most recently from c820307 to 24cd111 Compare March 31, 2020 18:06

Add bluetooth control support

1eb205a

Change-type: major

AlexProgrammerDE force-pushed the master branch from 013d3d3 to 1eb205a Compare April 1, 2020 19:51

AlexProgrammerDE and others added 8 commits April 1, 2020 21:54

Merge https://github.com/balenaLabs/balena-sound

4ce9d9a

Change-type: major

Merge https://github.com/balenalabs/balena-sound

b3d9f06

Change-type: major

Merge branch 'master' into master

e5cda77

Merge https://github.com/balenalabs/balena-sound

5bb9b33

Delete useless code

659356a

Delete mp3

6f10b5f

Delete mp3

ada7a9d

Merge branch 'master' into master

00cd23d

Merge branch 'master' into master

365df5f

AlexProgrammerDE added 3 commits April 28, 2020 09:44

Merge branch 'master' into master

c2a3133

Merge branch 'master' into master

3534db3

Merge branch 'master' into master

8914004

AlexProgrammerDE added this to the getting-portable milestone May 2, 2020

AlexProgrammerDE mentioned this pull request May 2, 2020

[WIP] Docs and 3D designs for a DIY balenaSound device (portable option too) #184

Closed

5 tasks

AlexProgrammerDE added 2 commits June 2, 2020 09:56

Merge branch 'master' into master

be7f2c3

Merge branch 'master' into master

0468e75

tmigone added balenaSound 2.x and removed balenaSound 3.x labels Jul 20, 2020

tmigone reviewed Jul 22, 2020

View reviewed changes

tmigone suggested changes Jul 22, 2020

View reviewed changes

tmigone removed the balenaSound 2.x label Sep 22, 2020

tmigone marked this pull request as draft October 29, 2020 20:15

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Add bluetooth remote control via GPIO #101

Add bluetooth remote control via GPIO #101

AlexProgrammerDE commented Feb 8, 2020 •

edited

Loading

AlexProgrammerDE commented Feb 10, 2020 •

edited

Loading

chrisys commented Feb 11, 2020

This comment has been minimized.

tmigone commented Feb 12, 2020 •

edited

Loading

AlexProgrammerDE commented Feb 20, 2020 •

edited by balena-ci

Loading

chrisys commented Mar 24, 2020

AlexProgrammerDE commented Mar 24, 2020

AlexProgrammerDE commented Mar 24, 2020

AlexProgrammerDE commented Mar 24, 2020 •

edited

Loading

chrisys commented Mar 25, 2020

AlexProgrammerDE commented Mar 25, 2020

chrisys commented Mar 25, 2020

Fiqq90 commented Mar 25, 2020

AlexProgrammerDE commented Mar 25, 2020 •

edited

Loading

AlexProgrammerDE commented Mar 25, 2020

Fiqq90 commented Mar 26, 2020

Fiqq90 commented Mar 26, 2020

AlexProgrammerDE commented Mar 27, 2020 •

edited

Loading

AlexProgrammerDE commented Mar 31, 2020 •

edited

Loading

chrisys commented Apr 1, 2020

AlexProgrammerDE commented Apr 1, 2020

AlexProgrammerDE commented Apr 10, 2020

ghost commented Apr 11, 2020 •

edited by ghost

Loading

AlexProgrammerDE commented Jul 2, 2020

AlexProgrammerDE commented Jul 2, 2020

tmigone commented Jul 20, 2020

tmigone Jul 22, 2020

tmigone Jul 22, 2020

tmigone Jul 22, 2020

Add bluetooth remote control via GPIO #101

Are you sure you want to change the base?

Add bluetooth remote control via GPIO #101

Conversation

AlexProgrammerDE commented Feb 8, 2020 • edited Loading

AlexProgrammerDE commented Feb 10, 2020 • edited Loading

chrisys commented Feb 11, 2020

This comment has been minimized.

tmigone commented Feb 12, 2020 • edited Loading

AlexProgrammerDE commented Feb 20, 2020 • edited by balena-ci Loading

chrisys commented Mar 24, 2020

AlexProgrammerDE commented Mar 24, 2020

AlexProgrammerDE commented Mar 24, 2020

AlexProgrammerDE commented Mar 24, 2020 • edited Loading

chrisys commented Mar 25, 2020

AlexProgrammerDE commented Mar 25, 2020

chrisys commented Mar 25, 2020

Fiqq90 commented Mar 25, 2020

AlexProgrammerDE commented Mar 25, 2020 • edited Loading

AlexProgrammerDE commented Mar 25, 2020

Fiqq90 commented Mar 26, 2020

Fiqq90 commented Mar 26, 2020

AlexProgrammerDE commented Mar 27, 2020 • edited Loading

AlexProgrammerDE commented Mar 31, 2020 • edited Loading

chrisys commented Apr 1, 2020

AlexProgrammerDE commented Apr 1, 2020

AlexProgrammerDE commented Apr 10, 2020

ghost commented Apr 11, 2020 • edited by ghost Loading

AlexProgrammerDE commented Jul 2, 2020

AlexProgrammerDE commented Jul 2, 2020

tmigone commented Jul 20, 2020

tmigone Jul 22, 2020

Choose a reason for hiding this comment

tmigone Jul 22, 2020

Choose a reason for hiding this comment

tmigone Jul 22, 2020

Choose a reason for hiding this comment

AlexProgrammerDE commented Feb 8, 2020 •

edited

Loading

AlexProgrammerDE commented Feb 10, 2020 •

edited

Loading

tmigone commented Feb 12, 2020 •

edited

Loading

AlexProgrammerDE commented Feb 20, 2020 •

edited by balena-ci

Loading

AlexProgrammerDE commented Mar 24, 2020 •

edited

Loading

AlexProgrammerDE commented Mar 25, 2020 •

edited

Loading

AlexProgrammerDE commented Mar 27, 2020 •

edited

Loading

AlexProgrammerDE commented Mar 31, 2020 •

edited

Loading

ghost commented Apr 11, 2020 •

edited by ghost

Loading