Linux/CC2564: PCM problem with Bluetopia stack

Hello,

hello said:

1 ）Now I can hear the music playing on am5728 via bluetooth headset. like http://processors.wiki.ti.com/index.php/WL18xx_TI_Bluetooth_Stack_AUDM_Demo_App

now i hace some  question  about AUDM DEMO APP to get audio from the microphone of a bluetooth headset.

But how do I get an audio message from a bluetooth headset?

The AUDM Demo App implements A2DP profile. When the application is configured in Sink role, you can connect the app to a smartphone or any other source and play music. Similarly, when the application is configured as Source, you can play a locally stored music file to a remote Sink like a Bluetooth headphone or speaker. Is this something what you are trying to do?

hello said:

2 ） I tried another way, linke  http://processors.wiki.ti.com/index.php?title=WL18xx_TI_Bluetooth_Stack_HFPM_Demo_App

       I can make phone calls through the mobile phone connected to am5728, but there is no sound. Does the PCM port need a separate configuration?

Yes, the PCM port (McASP) on the AM5728 must be separately configured. Unlike the A2DP implementation, the data path for HFP/HSP is over the PCM interface. 

Best regards,

Vihang

Hi Vihang,
Thanks for your answer,

I configured PCM interface like this:
HFP model
BCLK:454.546kHz
FCLK:14.2045kHz
then I connect an android phone with the following command:

Hands Free wl18xx>1 1

BTPM_Initialize() Success: 0.
DEVM_RegisterEventCallback() Success: 5.
Hands Free wl18xx>9 1

echo 136 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio136/direction
echo 0 > /sys/class/gpio/gpio136/value
echo 1 > /sys/class/gpio/gpio136/value
echo 0 > /sys/class/gpio/gpio136/value
echo 1 > /sys/class/gpio/gpio136/value
BT COMM PORT (/dev/ttyS9): 1
Changing HCI baud rate to 3000000
Status: Executing BTS Script /lib/firmware/TIInit_6.7.16.bts.
Status: BTS Script successfully executed.
DEVM_PowerOnDevice() Success: 0.
Set CODEC PCM Configuration to 16KHz and Route the GStreamer
[GCBT] PM_VS_PCM_Codec_Config BT is Slave
Device Powered On.
Hands Free wl18xx>killall: gst-launch-1.0: no process killed
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstAudioSrcClock
GStreamer route 16KHz success
Hands Free wl18xx>Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstAudioSrcClock


Hands Free wl18xx>RegisterAuthentication

DEVM_RegisterAuthentication() Success: 5.
Hands Free wl18xx>HFRRegisterEventCallback 1

HFRM_Register_Event_Callback() Success: 1.
Hands Free wl18xx>HFRRegisterDataCallback

HFRM_Register_Data_Event_Callback() Success: 2.
Next, I connected to cc2564 via bluetooth，and success.


Next, I control the phone to make a call

Hands Free wl18xx>DialNumber 2047DAEACE87 13126576341

HFRM_Dial_Phone_Number: Function Successful.
Hands Free wl18xx>
hetHFRCommandResult, BD_ADDR: 2047DAEACE87, Type 0 Code 0.
Hands Free wl18xx>
hetHFRControlIndicatorStatusIndication, BD_ADDR: 2047DAEACE87, Description: CALLSETUP, Value: 2.
Hands Free wl18xx>
Remote Device Properties Changed.
BD_ADDR: 2047DAEACE87
Device Flags: 0x8000049D
Hands Free wl18xx>
hetHFRCodecSelectIndication, BD_ADDR: 2047DAEACE87, Codec: 2
[GCBT] PM_VS_PCM_Codec_Config BT is Slave
Hands Free wl18xx>
hetHFRControlIndicatorStatusIndication, BD_ADDR: 2047DAEACE87, Description: CALLSETUP, Value: 3.
Hands Free wl18xx>
hetHFRCommandResult, BD_ADDR: 2047DAEACE87, Type 0 Code 0.
Hands Free wl18xx>
Remote Device Properties Changed.
BD_ADDR: 2047DAEACE87
COD: 0x0C025A
Hands Free wl18xx>
hetHFRAudioConnected, BD_ADDR: 2047DAEACE87, Type: hctHandsFree.

Configure PCM 16KHz
[GCBT] PM_VS_PCM_Codec_Config BT is Slave
Hands Free wl18xx>
hetHFRAudioConnected, BD_ADDR: 2047DAEACE87, Type: hctHandsFree.

Configure PCM 16KHz
[GCBT] PM_VS_PCM_Codec_Config BT is Slave
Hands Free wl18xx>
Remote Device Properties Changed.
BD_ADDR: 2047DAEACE87
Device Flags: 0x800004BD
Hands Free wl18xx>

The telephone can be connected, but there is no sound. What shoule i do ?

Do, you have the alsa hw plugins configured correctly for both the BT PCM from the CC2564x controller?
I would also suggest to check, if there are any ALSA interrupt count getting updated.

Hi ,

1>Do you mean configuring the BT PCM interface via the LinuxHFRM_HF. C file? And  how do I determine if the PCM port is working properly after I finish this demo?

#ifdef wl18xx
					/* Send Vendor Specific command to the Wilink Bluetooth FW. Configure the PCM   *
					*  interface parameters to: 16KHz sample rate, PCM clock rate 1.6MHz, PCM slave *
					*  FSynch- 1 clock with inverted polarity, 16 bit sample with no offset. The    *
					*  WL18xx Bluetooth PCM has 8/16 and 16/8 sample rate converted. The PCM  is    *
					*  allays on 16KHz.	Route the PCM lines with the GStreamer to 16KHz             */
					ret_val = PM_VS_PCM_Codec_Config(&PCMCodecConfig16k);
					RouteGStreamer(SAMPLE_RATE_16KHZ);

2>

 The picture below is my two audio devices.

I changed the LinuxHFRM_HF. C   #define ROUTE_GSTREAMER_WL_TO_AM335_SPK_16K "gst-launch-1.0 alsasrc device=plughw:WILINK8BT ! audio/x-raw,channels=1,rate=16000 ! alsasink device=plughw:AM335xEVM &"   to  

#define ROUTE_GSTREAMER_WL_TO_AM335_SPK_16K "gst-launch-1.0 alsasrc device=plughw:WILINK8BT ! audio/x-raw,channels=1,rate=16000 ! alsasink device=plughw:BeagleBoardX15 &"

 

3> Finally, trouble to ask, how to check the ALSA interrupt count?

Generally, you can check the interrupts in linux with

#cat /proc/interrupts

Please, check if the interrupts are incrementing..

Thanks