Handsfree HFP profile does it work to anyone?

[foldax]

Hello everyone,
I've done my best to run the Hands-Free Profile (HFP) on Crankshaft-ng but without success. I've tested it on Raspberry Pi 3, Raspberry Pi 2, and with five different USB Bluetooth dongles.

So, my question is: has anyone managed to get it working? What are the hardware requirements? Could it be that I'm using incompatible USB dongles?

[Chalek-97]

Hi,
I also had this problem, it's a problem with the ofono service
Don't forget to make a backup!!!
Here are the steps I did:

1. I connected my phone (Samsung S21 FE) to Raspberry Pi using an external BT module. In the settings on the phone I could only see audio streaming, no phone calls.
2. Turn on Dev mode, connect Raspberry via ethernet to your network, log in to putty.
3. Update the system and install ofono and ofono-phonesim
   sudo apt update && sudo apt install ofono ofono-phonesim
4. Then check the status of ofono
   systemctl status ofono
   if it is "Active: inactive (dead)"
   start the service:
   sudo systemctl start ofono
5. Enable the ofono service to start automatically at system startup:
   sudo systemctl enable ofono
6. Check the service:
   systemctl status ofono
   It should now be active (running). If so, the service is working correctly.

7. I don't know if it's necessary but I also set a profile for my device:
pactl set-card-profile bluez_card.C8_BD_4D_C5_46_A3 headset_audio_gateway
ofc C8_BD_4D_C5_46_A3 - this is my device address, you have a different one.

After that, restart the Raspberry Pi and check if the phone call option appears in the BT connection settings

[Chalek-97]

To check your device address type:
bluetoothctl info

[foldax]

Thank you! That works!

This line
pactl set-card-profile bluez_card.<BTADDR> headset_audio_gateway
fails with
Failure: No such entity
and is not necessary.

It does not want to connect automatically, i have to do it manually everytime from my phone, eventhough device is paired. Any ideas how to fix this ?
How about pairing more thant one phone ? Can we set priorities somehow ?

[Chalek-97]

I'm glad I helped,

Check if you have ENABLE_PAIRABLE=1 in .\crankshaft\crankshaft_env.sh my phone connects immediately when CRANKSHAFT starts

PS pactl set-card-profile **bluez_card**.<BTADDR> headset_audio_gateway this command didn't work because I left my device name in it. My bad 🤦‍♂️

[foldax]

I set ENABLE_PAIRABLE=1.
I have to repair my device after every reboot (forget paired devices in crankshaft). Could it be related to developer mode enabled ?
My BT : Bus 001 Device 005: ID 0b05:190e ASUSTek Computer, Inc.
And crankshaft_env:

ENABLE_BLUETOOTH=1
ENABLE_PAIRABLE=1
EXTERNAL_BLUETOOTH=1

After several tries more it works like this:

1. I pair my phone with RPI
2. It connects and disconnects to BT generally without problem until reboot
3. After reboot i cant connect anymore. My phone remembers RPI, RPI remembers my phone. I have to click forget device to make it work again :(