Bluetooth Scan not working with WL1835

Ankur Patel3

Other Parts Discussed in Thread: WL1835MOD, WL1835

Hello Friends,

First, I would like to thank you for all your support and suggestions. I am using WL1835MOD with I.MX28 as host processor. I have ported the btwilink dirver and hci commands/responses seems to be working fine. BT is connected with UART ttyAPP4 and I have checked with scope the BT RX/TX and BT Enable pin toggles as expected.

Kernel Version: 3.10.32

BT Firmware: TIInit_11.8.32.bts

But still there is no output for hcitool scan --refresh command? Please find the below information.

Running UIM application:
root@imx28evk:~# /etc/init.d/uim-sysfs start
UIM SYSFS Node Found at /sys/devices/kim.13/install
Starting uim-sysfs daemon.
root@imx28evk:~# uim:@ main
uim:install = /sys/devices/kim.13/install
uim:dev_name = /sys/devices/kim.13/dev_name
uim:baud_rate = /sys/devices/kim.13/baud_rate
uim:flow_cntrl = /sys/devices/kim.13/flow_cntrl
uim:begin polling...

Inserting Bluetooth Module:
root@imx28evk:~# insmod btwilink.ko
[ 1479.402898] (stc): chnl_id list empty :4
[ 1479.406866] (stk) : st_kim_start(stk) :ldisc_install = 1uim:poll broke due to event 10(PRI:2/ERR:8)
uim:read 1 from install
uim:@ st_uart_config
uim: signal received, opening /dev/ttyAPP4
uim:@ set_baud_rate
uim:set_baud_rate() done
uim:Setting speed to 3000000
uim:@ read_command_complete
uim: Command complete started
uim:@ read_hci_event
uim: read_hci_event
uim:Command complete done
uim:S
[ 1479.599726] (stc): st_tty_open peed changing to 3000000, 1
(stk) :line discipline installed
uim:Installed N_TI_WL Line displine
[ 1479.614705] (stk) :TIInit_11.8.32.btsuim:begin polling...
[ 1479.649638] (stc): add_channel_to_table: id 4
[ 1479.654296] (stc): add_channel_to_table: id 2
[ 1479.658721] (stc): add_channel_to_table: id 3
[ 1481.725954] (stc): remove_channel_from_table: id 3
[ 1481.730819] (stc): remove_channel_from_table: id 2
[ 1481.735883] (stc): remove_channel_from_table: id 4
[ 1481.740794] (stc): all chnl_ids unregistered
[ 1481.745571] (stk) :ldisc_install = 0uim:poll broke due to event 10(PRI:2/ERR:8)
u(stc): st_tty_close im:read 0 from install
uim:@ st_uart_config
uim:Un-Installed N_TI_WL Line displine
uim:begin polling...

Executing Commands found in BT_Init.sh:
root@imx28evk:~# hciconfig hci0 up
[ 1553.530479] (stc): chnl_id list empty :4 (stk) : st_kim_start
[ 1553.642406] (stk) :ldisc_install = 1uim:poll broke due to event 10(PRI:2/ERR:8)
uim:read 1 from install
uim:@ st_uart_config
uim: signal received, opening /dev/ttyAPP4
uim:@ set_baud_rate
uim:set_baud_rate() done
uim:Setting speed to 3000000
uim:@ read_command_complete
uim: Command complete started
uim:@ read_hci_event
uim: read_hci_event
uim:Command complete done
uim:S(stc): st_tty_open peed changing to 3000000
[ 1553.722930] (stk) :line discipline installed, 1
(stk) :TIInit_11.8.32.btse
uim:Installed N_TI_WL Line displine
uim:begin polling...
[ 1553.743081] (stc): add_channel_to_table: id 4
[ 1553.747707] (stc): add_channel_to_table: id 2
[ 1553.752395] (stc): add_channel_to_table: id 3
root@imx28evk:~# hciconfig hci0 piscan &
root@imx28evk:~# dbus-launch --auto-syntax > /tmp/bt-demo-env
[1]+ Done hciconfig hci0 piscan
root@imx28evk:~# . /tmp/bt-demo-env

Executing BT_Inquiry.sh to scan:
root@imx28evk:~# hcitool scan --refresh
Scanning ... // It returns without ANY result
root@imx28evk:~#

Command output for Debugging (after above commands):
root@imx28evk:~# hciconfig -a
hci0:   Type: BR/EDR Bus: UART
        BD Address: 84:DD:20:98:7E:7B ACL MTU: 1021:6 SCO MTU: 180:4
        UP RUNNING PSCAN ISCAN
        RX bytes:1109 acl:0 sco:0 events:57 errors:0
        TX bytes:836 acl:0 sco:0 commands:56 errors:0
        Features: 0xff 0xfe 0x2d 0xfe 0xdb 0xff 0x7b 0x87
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy: RSWITCH HOLD SNIFF
        Link mode: SLAVE ACCEPT
        Name: ''
        Class: 0x001f00
        Service Classes: Unspecified
        Device Class: Invalid Device Class!
        HCI Version: 4.0 (0x6) Revision: 0x0
        LMP Version: 4.0 (0x6) Subversion: 0xac20
        Manufacturer: Texas Instruments Inc. (13)

root@imx28evk:~# cat /sys/kernel/debug/ti-st/version
AC20 11.8.32
root@imx28evk:~# cat /sys/kernel/debug/ti-st/protocols
[3]
BT=R
FM=U
GPS=U

Ran HCIdump with Scan as below:
root@imx28evk:~# hcidump -X &
root@imx28evk:~# HCI sniffer - Bluetooth packet analyzer ver 5.19
device: hci0 snap_len: 1500 filter: 0xffffffff
root@imx28evk:~# hcitool scan --refresh
Scanning ...
< HCI Command: Inquiry (0x01|0x0001) plen 5
    lap 0x9e8b33 len 8 num 0
> HCI Event: Command Status (0x0f) plen 4
    Inquiry (0x01|0x0001) status 0x00 ncmd 1
> HCI Event: Inquiry Complete (0x01) plen 1
    status 0x00
root@imx28evk:~#

Find the attached kernel.config file at http://pastebin.com/keMjYYZE and kernel_boot.log with the post.

Feel free to share if you need further information to debug. Any pointers will be helpful on getting the scan results?

Regards,

Ankur

over 11 years ago

0 Sundeep Javvaji over 11 years ago

TI__Mastermind 32615 points

Hi,

What is the blueZ version you are using

Try hcitool commands http://linuxcommand.org/man_pages/hcitool1.html, for scanning -- "hcitool inq", I am not sure what --refresh option is for.

0 Ankur Patel3 over 11 years ago in reply to Sundeep Javvaji

Intellectual 660 points

Hello Sundeep,

Thank you for your quick response.

BlueZ version: 4.101 (Built via Bitbake receipe)

Find the below output of "hcitool inq". It still returns with no result.

root@imx28evk:~# hcitool inq
Inquiring ...
< HCI Command: Inquiry (0x01|0x0001) plen 5
    lap 0x9e8b33 len 8 num 0
> HCI Event: Command Status (0x0f) plen 4
    Inquiry (0x01|0x0001) status 0x00 ncmd 1
> HCI Event: Inquiry Complete (0x01) plen 1
    status 0x00
root@imx28evk:~#

Pls share if you need further information.

Regards,

Ankur

0 Sundeep Javvaji over 11 years ago in reply to Ankur Patel3

TI__Mastermind 32615 points

Hi,

Not sure how did you build BT. Hope you have followed http://processors.wiki.ti.com/index.php/Open_Source_Wireless_Connectivity_WiLink8_Build_scripts

The Demo scripts under "/usr/share/wl1271-demos/bluetooth/scripts" folder are tested with bluez-4_98.

0 Ankur Patel3 over 11 years ago in reply to Sundeep Javvaji

Intellectual 660 points

Hello Sundeep,

Thank you for your response.

I have checked the link in your post and ported Bluez: 4.98. Still it fails to scan. I have used scripts at "wl1271-bluetooth/script/common", BT_Init.sh script followed by BT_Inquiry.sh. inquiring separately as below didnt worked:

root@imx28evk:~# hcitool -i hci0 inq
Inquiring ...
root@imx28evk:~#

root@imx28evk:~# hcitool -v

hcitool: invalid option -- 'v'
hcitool - HCI Tool ver 4.98
Usage:
        hcitool [options] <command> [command parameters]
Options:
        --help Display help
        -i dev HCI device
....

Could you please share how can I confirm if the problem lies with Driver, Bluez or BT firmware? For info, the WiFi is running on the board, as both uses single RF, do I need to disable WiFi for BT to work?

Thank you,

Ankur

0 Sundeep Javvaji over 11 years ago in reply to Ankur Patel3

TI__Mastermind 32615 points

Hi Ankur,

You can just run "./BT_Init.sh" and "./BT_Inquiry.sh" (or) after BT init you can run "hcitool inq" command.

Please see the below link which I found for testing http://processors.wiki.ti.com/index.php/AM37x_Wireless_Connectivity_NLCP_Bluetooth_Terminal_linux

Also to make sure it is not RF issue, place the remote device very near to DUT and try scanning from DUT

0 Ankur Patel3 over 11 years ago in reply to Sundeep Javvaji

Intellectual 660 points

Hello Sundeep,

At last, got BT working !!

Thank you for all your quick suggestions and support.

The issue lies in the https://github.com/TI-ECS/bt-firmware repo. I was using https://github.com/TI-ECS/bt-firmware/blob/master/TIInit_11.8.32.bts this firmware file and that is why it was failing.

After using firmware file 11.8.32.bts from zipped file: https://github.com/TI-ECS/bt-firmware/blob/master/Bluetopia_InitScript_for_TI_WL8.zip everything started working.

Regards,

Ankur

0 Sanjay52975 over 10 years ago in reply to Sundeep Javvaji

Intellectual 465 points

Not sure how did you build BT. Hope you have followed processors.wiki.ti.com/.../Open_Source_Wireless_Connectivity_WiLink8_Build_scripts

This link virtually points to anywhere useful, please update with the current link.

0 Sanjay52975 over 10 years ago in reply to Ankur Patel3

Intellectual 465 points

Ankur Patel3 said:

After using firmware file 11.8.32.bts from zipped file: https://github.com/TI-ECS/bt-firmware/blob/master/Bluetopia_InitScript_for_TI_WL8.zip everything started working.

This link seems to have moves or has been removed.

We are starting to use WL1835 with Bluez and are looking for pointers documentation and code to start the process. Any pointers are appreciated. Thanks for your assistance.

0 Joseph Gigi over 10 years ago in reply to Sanjay52975

TI__Guru* 85400 points

Hi,

Please see: processors.wiki.ti.com/.../WL18xx_BlueZ_Bringing_Up_on_AM335x for the bring up guide.
The BTS files are in: git://git.ti.com/wilink8-bt/ti-bt-firmware.git

Regards,
Gigi Joseph.

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Bluetooth Scan not working with WL1835