CCS/CC1352R: Start project for subGhz / BLE / OAD

Harald Ilg

Part Number: CC1352R

Tool/software: Code Composer Studio

Hy,

as stated before I start a new project from scratch.

The hardware is CC1352R1 based and shall support subGhz and BLE, usually only one RF is active at a time. Of course device shall be updateable over RF, most probably BLE.

What would be a good starting point for that project? So far I tend to favour the dmm_wsnnode_ble_sp project, but there RF comes as a library, so there is only one binary, which is not too ideal for OAD. Will it be simple to divide that into i.e. stackBLE, stacksubGhz, App? Or would you recommend a different start project?

I need to implement my own OAD protocol anyway to stay compatible with earlier products, so the OAD code itself is not the issue, it is more the overall project architecture.

Thanks in advance

Harald

over 6 years ago

0 IUsedToBeARealPerson (M-W) over 6 years ago

TI__Guru 58425 points

Hi Harald,

I guess it in theory is possible, but I expect it to be far from trivial. You would need to implement a "glue" layer between the static components and the different RF applications (kind of what BLE is doing when connecting the app and the library). Easiest approach would to be to always update the whole image. Alternatively, if it is possible, you could maybe experiment with "partial" updates where you basically only OAD the difference in the existing and new image.

Regarding DMM, you might find this example together with this SimpleLink training helpful when it comes to combining your own proprietary RF together with another stack using DMM:

github.com/.../proprietary_examples

dev.ti.com/.../dmm_integration.html

0 Harald Ilg over 6 years ago in reply to IUsedToBeARealPerson (M-W)

Genius 3060 points

Hy,

>I guess it in theory is possible, but I expect it to be far from trivial.

Will TI give any help about this or will create a sample project with several images implemented? Compared to simple_peripheral_oad_offchip for BLE.

When I simply compile the dmm_wsnnode_ble5_sp_cc1352r1lp sample project it needs 170k Flash, without a single line of application code written

For On Chip OAD I will need at least the same amount of flash available as the image, that I want to download to stay fail safe. This seems impossible when the image size is close to 170kByte.

Regards

Harald

0 IUsedToBeARealPerson (M-W) over 6 years ago in reply to Harald Ilg

TI__Guru 58425 points

Hi Harald,

I'm not aware of any such examples as of today, in terms of support, there is always E2E.

Regarding the flash size, which SDK are you using?

0 Harald Ilg over 6 years ago in reply to IUsedToBeARealPerson (M-W)

Genius 3060 points

I use simplelink_cc13x2_sdk_2_30_00_45 as I have C revision controllers on my prototype hardware

0 IUsedToBeARealPerson (M-W) over 6 years ago in reply to Harald Ilg

TI__Guru 58425 points

Ok, If you move to the newer SDK I would expect number closer to 110 KB. This does however required the new revision E device to run.

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CCS/CC1352R: Start project for subGhz / BLE / OAD