Hi Sebastian, > i'm using bluez 3.36 on an embedded system with a CSR Chip connected. > Communication via HCI over UART works well. I need to receive and send > voice from/to a headset and therefore I want to send/get the voice as > PCM to the CSR chip. The PCM pins of the CSR Chip are connected to the > SSC pins of an avr32 microcontroller. The CSR chip is configured to use > PCM as soon as the Host produces Clock, otherwise it tries to transmit > voice per HCI which is too slow (only 115200 baudrate for a 8kHz PCM > stream). > In etc/bluetooth/audio.conf I have set SCORouting=PCM > In etc/Bluetooth/asound.conf I have written the following: > ##################### > pcm.headset { > type bluetooth > } > ctl.headset { > type bluetooth > } > ##################### > But bluez is still sending voice over HCI, which is ok because: How > should it know where to transmit the PCM stream. I need a device but I > am not sure what exactly is needed. > Do I have to write a dummy soundcard driver which only sends and > receives pcm over the ssc pins? I guess a pseudo UART device for SSC > isn't enough because bluez needs an alsa device, correct? > > For a quick and dirty solution: Is it possible to let bluez reduce the > soundquality so it works over HCI any way? > > Are my settings correct or have I missed something? I would really advise you to start using 4.27 instead of a previous major version that is not developed. Also when using PCM for SCO then you need to use the D-Bus API for headsets and not the ALSA plugin. Regards Marcel -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html