LAUNCHXL-CC1350-4: Memory Allocation and increase packet size for rfPacketTx example.

Jordan Stimely

Part Number: LAUNCHXL-CC1350-4

I am using the launchpad mentioned in the title with a tweaked version of the PacketTx/Rx example from the SimpleLink cc13x0 SDK v 3.20.00.23.

I am sending my own custom data packets consisting of a CSV file of bytes. I noticed that during testing that the Transmitter & Receiver are only capable of 255 bytes per packet. I wondered if this could be increased so I could send more data per packet. The issue seems to be coming from the (lack of) memory. I read something up on STACK and HEAP sizes might have something to do with it although I don't know enough to be sure. I have a feeling that it has something to do with SRAM although I am also not too sure.

I am running CCS 9.10.0.

Any feedback is much appreciated. I will try to respond as soon as I can.

over 6 years ago

0 TER over 6 years ago

TI__Guru**** 317180 points

It's not clear how you have implemented sending a packet larger than 255.

Have you implemented this according to the example posted as the last post on this page: https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz/f/156/p/494902/1979887#1979887

0 Jordan Stimely over 6 years ago in reply to TER

Prodigy 70 points

I will give this a read and also a test. I don't know where to put this in the project as main_tirtos.c is in the way.

The TX example that you link me too embeds the BIOS_Start() function.

Does this mean I have to run without RTOS?
Do I have to simply add and replace my existing TX/RX files? Or is it not that easy?

0 TER over 6 years ago in reply to Jordan Stimely

TI__Guru**** 317180 points

The example I linked to is written before we started to have POSIX structure of our examples. You can copy the content of txTaskFunctionover to the mainThread in the current examples and the the smartrf_settings.c file you can merge with the existing setting file.

0 Jordan Stimely over 6 years ago in reply to TER

Prodigy 70 points

Thank you for your feedback,

The above instructions didn't work for me. I copied the contents of the txTaskFuction over to the mainThread in my example folder. I also did the best possible job at manually merging the two "smartrf_settings.c" together and also replace the propTx/propRx with the propTxAdv/propRxAdv functions in the "smartrf_settings.c".

Here is my error output:

0 TER over 6 years ago in reply to Jordan Stimely

TI__Guru**** 317180 points

It could be that I was too literal when I wrote copy but the information given in addition to the other examples in the SDK should be enough to show how to use the adv commands.

Sub-1 GHz

Sub-1 GHz forum

LAUNCHXL-CC1350-4: Memory Allocation and increase packet size for rfPacketTx example.