There's currently 2 daemons to manage modems, oFono and ModemManager. While oFono takes care of the HSP/HFP AG Bluetooth profiles, ModemManger only handles the modem and the profiles management should be done by another application.
Based on the work done by @dylanvanassche for PulseAudio (see pulseaudio/pulseaudio!693), this MR enhanced the HFP native backend to use the ModemManager if it is present and allows to:
- accept a call (
ATA) - reject or hang up a call (
AT+CHUP) - dial number (
ATD<number>;) - ring indication (
RING) - query signal indicators order (
AT+CIND=?) and values (AT+CIND?, supported indicators are service status, call, call setup, call held, signal strength, roaming and battery level) - indicator (de)activation (
AT+BIA) - indicator change event (
+CIEV) - query operator name (
AT+COPS) - enhanced call reporting (
AT+CLIP,+CLIP) - enhanced error reporting (
AT+CMEE,+CME ERROR:) - call list (
AT+CLCC) - DTMF tone generation during a call (
AT+VTS) - Subscriber number reporting (
AT+CNUM)
The call hold, multiparty call, dial from memory and dial last number are not supported.
Testing tools for this MR
I tested this MR by running PipeWire and WirePlumber on a PinePhone.
- a Bluetooth HFP device, depending on the device more or less features can be tested, i.e. mostly accepting or rejecting a call and hanging up a call with and headset while most of the commands/features can be tested with a multimedia system in recent car.
- Pair & connect your HFP device
- Test each feature of your HFP device
-
nOBEX: provides an HFP client, instructions are explained in detail in their README, all AT commands & responses are printed out with nOBEX
- Restart bluetooth daemon with
--compatflag - Run the
hfp_client.pyas root - Pair & connect with the (pine)phone (you will need to send some commands to setup SLC, see their README)
- AT commands can be send/received in nOBEX's hfp_client.
- Restart bluetooth daemon with
Limitations
Currently the audio stream is not set up correctly on the PinePhone