CC2540 Advertising check tool

Brian Cho

Other Parts Discussed in Thread: CC2540, CC2541

Hi,

I previously used CC2540 F128 and recently replaced it to CC2540 F256. I first checked the GPIO and peripherals and certainly believed BLE communication would work. But after I finished all the works, I just found out it doesn't do advertising...

So I went back to original simpleBLEPeripheral example, set the break point at GAP Role callback, and saw it hits GAPROLE_ADVERTISING. But I can't see the device in my smartphone bluetooth (before I was able to see it using CC2540 F128).

With this situation, I have 2 questions.

1. I'm wondering what it means IAR Embedded Workbench hits GAPROLE_ADVERTISING break point but doesn't actual advertise.

2. With the SmartRF Studio 7, if I certainly saw it transmits bluetooth signal but I couldn't see the device in desktop or smartphone BLE device list, what could I try to fix the problem?

Thanks,

Brian

over 10 years ago

0 Eirik V over 10 years ago

TI__Guru 56590 points

Hello Brian,
Is your code working with CC2540F128?
If taht is the case, have you changed the linker file to:
$PROJ_DIR$\..\..\common\cc2540\ti_51ew_cc2540b.xcl

0 Brian Cho over 10 years ago in reply to Eirik V

Intellectual 420 points

Hi Eirik,

Yes, it works and I already changed linker file to the one you mentioned... What else can I think of to check the issue? Any comment would be appreciated.

Thanks,
Brian

0 YiKai Chen over 10 years ago in reply to Brian Cho

Guru 735685 points

You can use packet sniffer to check if the device does advertising.

0 Brian Cho over 10 years ago in reply to YiKai Chen

Intellectual 420 points

Hi YiKai,

I used packet sniffer with CC debugger. I got below result and searched the web but couldn't find any useful information. Can you please help me?

Thanks,

Brian

0 YiKai Chen over 10 years ago in reply to Brian Cho

Guru 735685 points

You should use CC2540 USB dongle to do sniffer.

0 Brian Cho over 10 years ago in reply to YiKai Chen

Intellectual 420 points

Do you mean USB dongle in following web page - www.ti.com/.../cc2541dk-mini ?

I configured CC debugger pins following its manual - 6.2.3 Minimum Connection for SmartRF Packet Sniffer. Isn't this enough? To see the actual packet transmission, do I need to buy CC2541 USB dongle (or CC2540 maybe)?

Thanks,
Brian

0 YiKai Chen over 10 years ago in reply to Brian Cho

Guru 735685 points

According to section 6.2.3 in CC debugger user guide, you have to connect CCdebugger with an CC254x SOC via SPI. Do you do this?

0 Brian Cho over 10 years ago in reply to YiKai Chen

Intellectual 420 points

Yes I did that. FYI, I used simpleBLEPeripheral source code without changing anything.

Thanks,
Brian

0 kazola over 10 years ago in reply to Brian Cho

Guru 18595 points

Hi Brian,
It's been a time since I do not work with CC254x.

However, there is no such thing as CC2541 dongle, as far as I remember. The USB dongle used to be always CC2540.

What you may be missing is installing the .hex firmware to the USB dongle. You will identify the USB dongle running the sniffer firmware if the status LED is green. If it is red, it is probably running HostTestRelease firmware.

If red, use Btool software to scan and check for ADV. If green, use the sniffer software to check for ADV.
Have I helped you in any way?

0 YiKai Chen over 10 years ago in reply to Brian Cho

Guru 735685 points

Sorry, it is my typo. I mean CC2540 USB dongle.

0 kazola over 10 years ago in reply to YiKai Chen

Guru 18595 points

:)
Anyway @Brian Cho , you can see in the screenshot that no dongles are being detected, only the CC debugger.
Connect a dongle, be sure you have the driver installed. Then, make sure you have the sniffer firmware flashed.
Check this and have a nice day.
processors.wiki.ti.com/.../BLE_sniffer_guide

0 Brian Cho over 10 years ago in reply to kazola

Intellectual 420 points

Thanks kazola! The link is really helpful. Now I understand how CC2540 USB dongle works.

Thanks,
Brian

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CC2540 Advertising check tool