How to use Bluez with CSR chip ?

Hi

    I am not sure is this the proper place to put up this question, if not , 
please correct me.

    I was trying to run bluez on our board with bc4 chip. This chip need to 
set pskey before it can run

    I use hciattach and hciconfig to bring up the hci0 interface.

    Then I try hcitool hci0 scan with my earphone open.

    Nothing happend.

    while, if I using CSR's bchs a2dp demo , it's ok, I can play music. say 
hardware is ok.

    My question is :

    1. To enable bluez with csr chip, is there anything need to do vs the 
standard kernel and bluez package ? Some config need?

    2. Did I need to place the bootrap init sequence for the bc4 chip in 
some place if I using bluez ? say in kernel or in the bluez user space 
scripts? Or , the standard kernel and bluez utility already hand it, But I 
just do the wrong way ?


Many thanks.
Raymond




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