Chip with BT2.0 & wlan coexistance

Wireless & IoT
1

Hello guys,

i need help for choosing the right chip/module with dev board:

Here my guidelines:

  • BT 2.0 with AFH & SPP

    WLAN coexistence with AWMA [802.15.2, Clause 14.1]


    • 3 weeks ago, when i started with my quest, i had 5 to 6 chips in my shortlist. After checking the aivailability, minimum purchuse and cost there was only the CSR BLueCore which was left over.

    10 minutes ago, i read:

    Finally the most important is the xIDE BlueLab 4.1 which is include IDE and C compiler and DSP Assembler, which you need to manage to find it.

    Because without BlueLab you cannot develop you software for Virtual Mode application, you will need this software to compile your C code and merge it with the CSR bluetooth stack firmware signed or unsigned is depend on you, how you want to protect your design or not.

    Link: viewtopic.php?t=16425

    Here is my list which got of of line:

    Free2Move F2M03GLA → not in FW integrated

    Infineon PMB 8753/2 SPP-AT → only bulk

    TI BRF6300 → only OEMs

    Philips BGB210 -->sold to ST/Ericsson

    LMX 9830 SM-ND → no WLAN coexistance

    CSR Unifi CSR6026/6028 → no BT2.0

    Mitsumi WML-Cxx → no WLAN coexistance

    I was looking forward to buy @digikey an DEV-SYS-0115-1A BC6-ROM QFN Modul.

    Is it necessary to buy a BT Developer lisence or an CSR-BCES01 CASIRA Developmenttool when i’am going to programm that chip?

    Does that mean the compiler etc costs that much?

    My apprehension is increaded by follwing:

    SDKs include firmware and software libraries for Bluetooth profiles and the application

    Link: http://www.csr.com/store/search.php?q=id

    “DL-BDEV-10002-1A”

    Does anyone have another idea or referance?

    It would give me great pleasure!

    Thank you very much,

    regards

    2

    must you use Bluetooth rather than better alternatives?

    3

    Yes, i need bluetooth for another project. but i think that’s not the main point.

    does csr give the firmware as image or as source code to the customer??

    basicly there is the problem with wlan coexistence and the AMWA mechanism.

    the point is, that i have to send my data in the beacon interval in its subinterval t_wpan as described in 802.15.2,

    therefore the answer of the question above is very important for me!

    kind regards

    4

    Bluetooth is a frequency hopping protocol. I recall that it does not do CSMA so it transmits without doing clear channel assessment. Indeed, a hopping system cannot delay for CSMA/CA. When some freq. X in the hopping sequence has a strong WiFi signal present, beacon or data, it is likely that the Bluetooth frame will be errored. So it will be corrected in a later hopping step.

    802.15.4 does use CSMA, as does 802.11, so they coexist better.

    IMO, 802.15.4 @ 2.4GHz is a much better/simpler/cheaper way to do 100Kbps or so data transfers. Bluetooth is better at its audio profiles.