TMS320F28384S: Running MCAN ISR From Ram

Inno, 

We are looking into it and will get back to you very soon.

Thanks.

Inno, 

There are a couple of things that you can check.

First, you need to check if your code has a memcpy command (included in the device_init function in all C2000ware examples). All functions are loaded into Flash for the Flash build configuration and this command copies the ramfuncs to RAM and then executes from RAM. 

Second, check the RUN ADDR for the MCANIntr1ISR function in the map file. Next, whilst in the debug mode in CCS, check the disassembly view, and search for the function name in the search bar at the top to make sure that the run address has the interrupt ISR code.

If you face any issues with accessing the above checks, please let us know.

Thanks.

thanks for your relpy

the first line in my code is a call to CM_init(); in which resides the code 

I verified I am running from flash, as this project has been working for quite some time now.

I looked at the map file and cam see the MCANInt1ISR resides right next to flash init that myst reside in ram.

further more , I found these lines of code:

in CM_init

could they be related to the issue at hand ?

Inno, 

I tried making that change to an existing example and it works properly.

#pragma CODE_SECTION(MCANIntr1ISR, ".TI.ramfunc");
//
// This is Interrupt Service Routine for MCAN interrupt 1.
//
static void MCANIntr1ISR(void)
{
    uint32_t intrStatus;

Can you edit the example "mcan_ex1_loopback" as mentioned above and let us know if it works?

Then we can take it from there.

Thanks.

you are running the example from flash or RAM ?

I am running the example from Flash.