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Software Application Development Microzed Wilink8 BT on Linux
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Microzed Wilink8 BT on Linux

Former Member
Former Member over 10 years ago

We're having a bit of difficulty getting BT up and running even on the I/O carrier card with the Wilink8.

I've been following this guide: http://microzed.org/sites/default/files/documentations/GSG-AES-PMOD-WILINK8-G-v1_6.pdf

And also the reference design here: http://zedboard.org/support/design/6491/66

However, it appears to only be a ramdisk and even when I dig around into the files I can't seem to find much in the way of an example of bringing up BT.

The closest I have is from the pdf guide, Appendex D:
# Enable the Bluetooth radio by setting the BT_EN pin high echo 54 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio54/direction echo 1 > /sys/class/gpio/gpio54/value # Bluetooth modules (drivers) do not require loading, - they are already built into the kernel # activate BlueZ hciattach -t 30 -s 115200 /dev/ttyPS1 texas 3000000 flow hciconfig

When I get to the hciattach step, it gets stuck with an initialization timeout error.

I think I have the device tree setup correctly and the hardware design from the guides and reference designs. If you could send any more information along (a full linux system with a bt script) or put me in touch with someone to help get this working that would be great, or any ideas on what to look out for in terms of potential problems.

I can post any further information if it will be helpful.

Jason

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  • peterfenn
    0 peterfenn over 10 years ago

    Jason

    Reasons for that hciattach step timing-out could be:

    a) hardware: does the Zynq FPGA design you are using have the BT UART + GPIO interface implemented correctly?

    b) linux image and device-tree: are you using latest download from the microzed.org Wilink 8 Adaptor folder or is this your own build?

    Regards
    Peter  

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  • peterfenn
    0 peterfenn over 10 years ago

    Jason

    Reasons for that hciattach step timing-out could be:

    a) hardware: does the Zynq FPGA design you are using have the BT UART + GPIO interface implemented correctly?

    b) linux image and device-tree: are you using latest download from the microzed.org Wilink 8 Adaptor folder or is this your own build?

    Regards
    Peter  

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  • peterfenn
    0 peterfenn over 10 years ago in reply to peterfenn

    Jason

    Some debugging questions from my side:
    1) Is the Wilink8 Adaptor plugged into the correct Pmod connectors? (JK and PS on the IO Carrier Card)
    2) Is the TI WL1835COMB module fully plugged into the adaptor's COM connector?
    3) Were you able to verify Wi-Fi operation with your test setup?
    4) Did you make use of the pre-generated files in the XLX_7010_WL8SD_imageramdisk_version folder?
    (- I have just downloaded and re-verified Bluetooth operation using those files)

    Regards
    Peter

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  • Former Member
    0 Former Member over 10 years ago in reply to peterfenn

    a) I think so, I followed pg 21/22 of the pdf when setting it up just like the Wi-Fi, which seems to be working fine. One thing I noticed though from the instructions. In the block diagram in Fig 9, when I follow the checkboxes you outline - I don't see the SDIO_1 ports at first. The only way I can make this show up is to click in the Zynq block design: Perihperal I/O Pins and then set SD 1 to EMIO. Maybe this is part of the problem?

    b) The linux image is one which I have compiled - it is using this branch of the kernel: https://github.com/Xilinx/linux-xlnx/tree/xilinx-v2014.2

    with the 3.14.0-rt1 realtime patch applied to it and the wilink patch from here: http://downloads.architechboards.com/deposit/microZed_wilink8.patch

    (following the scripts from the vm in the pdf)

    For the device tree, I am using the one from the microzed reference design.

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