CC2640: CC2640 Bluethooth with cc2650 code

Paul Bareil

Part Number: CC2640
Other Parts Discussed in Thread: CC2650

Hi All,

I have a custom board with a CC2640F128 chip (it was supposed to be the newest R2 version but due to worldwide shortage..... anyway!)

Then I went to use the SmartRF Studio application and saw it was working correctly (Output status is DONE_OK). I was pretty happy with my board since it has good transmitting power, etc!

Then, I setup a project with the simple_peripheral_cc2650em_app code. If I try to run that code I never reach the SimpleBLEPeripheral_taskFxn function so of course the bluethooth is not working. HOWEVER, If I then go back to the SmartRF Studio, It fails with a Status : IDLE.

If I want the SmartRF Studio to work again, I need to completely Erase my MCU, then try the Studio again and then it works.

So here are the conclusions I have from this:

1) Hardware is working (I can see the broadcasting on my cellphone with good power!)

2) simple_peripheral_cc2650em_app code sets something wrong that makes the MCU unusable afterwards!

3) I can make a led on my board light up with the simple_peripheral_cc2650em_app code.

Do you have any idea what is happening?

over 5 years ago

0 Jan over 5 years ago

TI__Mastermind 44500 points

Hello Paul,

Thank you for the details. Can you provide us with the SDK version you are using? The simple_peripheral project is unmodified, correct? I have assigned an expert to comment on this matter. However, expect slight delays due to upcoming holidays.

Best Regards,

Jan

0 desouza over 5 years ago

TI__Guru**** 171879 points

Hi,

The aspect that I think may be happening is that your custom hardware you have may be using a different device package, thus you would probably need to modify the pin assignments - the CC2650EM project uses 7x7 by default. You could try other projects that use different packages.

A few other threads mention migration scenarios that could bring you some ideas:

https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/762320/cc2650-cc2650-5x5-using-analog-pin-as-gpio-fails

https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/533321/migrating-code-from-a-cc2650-to-a-cc2640

I will try to gather additional details and report back in case I find anything relevant.

Hope this helps,

Rafael

0 Paul Bareil over 5 years ago in reply to Jan

Prodigy 130 points

Many thanks! Here is an image with the details. Seems to be sdk 2.2.6.7

0 Paul Bareil over 5 years ago in reply to desouza

Prodigy 130 points

This is one of the first thing I tried. I replaced the BoardGpioInitTable with a PIN_TERMINATE configuration only, but there might be other pins being setup that I do not know of.

I also have the BOARD_DISPLAY_EXCLUDE_UART and BOARD_DISPLAY_EXCLUDE_LCD set to prevent the pins from being modified.

My package is a 31pins 7x7.

+1 Paul Bareil over 5 years ago in reply to desouza

Prodigy 130 points

I have tried to delete everything, restart, but not matter what I do, I soon as I hit the "BIOS_start()" line it seems to crash, I always end-up here.

I looked for a HW problem, but, like I said, using the SmartRf Sutdio app, I can send an advertising packet to my cell phone.. so the 24MHz and everything must work in order for it to work.

Any other idea... we have lost so much time on this...

0 Paul Bareil over 5 years ago in reply to desouza

Prodigy 130 points

I also checked the power coming into the chip and I have a nice stable 3.3V and a very stable 1.7V on the Vddr pins.

0 Paul Bareil over 5 years ago in reply to desouza

Prodigy 130 points

I tried the clock_CC2650_Launchxl_TI, the empty_CC2650_Launchxl_TI, the empty_CC2650_Launchxl_TI, the error_clock_CC2650_Launchxl_TI and they all worked perfectly.

As soon as I tried the rfPacketTx_CC2650_Launchxl_ti, I saw the same problem when calling the bios_start() function.

EDIT: In fact more precisely, the task is called, but as soon as I try to run the following line, it fails.

RF_postCmd(rfHandle, (RF_Op*)&RF_cmdFs, RF_PriorityNormal, NULL, 0);

It fails at the end of the function when the following function is called.

Swi_or(Swi_handle(&swiFsm), Fsm_EventWakeup);

Then, inside that function, as soon as the Swi_post(swi); is called... that is! nothing works!

@desouza do you have any idea what could be the problem?

I also checked in the disasembly code for problems and it turns out the MCU jumps to an empty area of the code. It does this after going into BIOS_start(), then ICall_taskEntry, then it goes straight to 0xF000

What should be written at memory address f0000?

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CC2640: CC2640 Bluethooth with cc2650 code