LAUNCHXL-F28379D: SPI using CPU2 and DMA

Hi veena,

Thank you for your reply but as I have looked in the c2000ware library I have found 2 types of examples one is in the examples folder and one in the device support folder from my understanding the examples in the examples folder are using the driverlib and the examples in the device support folder use different drivers I have already started my project on the initial example project that is already on the launchpad upon first connecting it to the pc and as I have said I am very new to the CCS workspace and microcontroller programming in general and I don't really understand the difference between the two types of examples if you could help me a bit more that would be great.

Regards,

Shem Amity.

also upon loading the example in C2000Ware_4_00_00_00\device_support\f2837xd\examples\dual\dma_transfer_shared_peripheral to CCS I cannot get the cpu2 project to build I get a lot of errors first he does not recognizes IER and IFR next every function that is connected to the DMA is recognized and colored purple but still gets an error where it says it is first mentioned in the dma_init function

Hi Shem Amity,

If you are new to C2000, I would recommend you start with driverlib based examples.

There is an example which showcases how SCI is used from CPU2 side - 

<C22000ware>\driverlib\f2837xd\examples\dual\sci

You can refer to the CPU1 code on how SCI ownership is transferred to CPU2. Note that the pin muxing as well is done by CPU1.

In case of DMA, the device has dedicated DMAs on both the CPU subsystems. There is no need to transfer ownership to CPU2.

Regarding the device support example issue, I will try to reproduce the issue and get back to you.

Regards,

Veena

Apologies for the delayed response. I am unable to reproduce the issue. The project seems to build without errors to me. Can you share a snapshot of the error you are seeing.

Regards,

Veena

Hi Venna

thank you for you efforts I am attaching my CCS window showing that CCS for some reason does not recognizes the IFR and IER registers the other errors were solved

this one is in the cpu1 code

this one is for cpu2 code

thank you for your support

Can you try a new CCS workspace?

I have seen similar issue before changing the workspace had resolved the issue

Regards,

Veena

Hi Venna

Changing the workspace worked and now I don't get any errors but when I try to apply a variation of the code I get an error about not having enough memory on the card to fit the program that is odd since I have a different project with the same code and it works just fine do uou have any idea what might be the problem?

Regards

Shem Amity

Thank you so much Veena you can close this thread