Porting TI-RTOS examples

Hi Luke,

There are a few steps to port an example to a different board.

1. Update the board.c/.h/.cmd files as needed (e.g. EK_LM3S9D96.c/.h/.cmd).

2. Open the Project's Properties and change the General->RTSC->Platform to the desire board (e.g. ti.platforms.stellaris:LM3S9D96 -> ti.platforms.stellaris:LM3S6965)

3. Also in the Project's Properties, in the Build->Compiler->Advanced Settings->Predefined Symbols, change the PART_LM3S9D96 to PART_LM3S6965.

4. Open the .cfg file and change the SYS/BIOS CPU clock frequency (Graphically look at SYS/BIOS->Basic Runtime Options or textually "BIOS.cpuFreq.lo = <value>;"

5. In your case, adjust the SYS/BIOS M3 Boot/Startup Options as needed in the .cfg file

FYI: We are working on a porting guide to include in the User Guide.

That's great, those tips are really helpful.  I had actually done all but step 3.

Now that they're done though, I've receieved a few compilation errors in EK_LM3S6965.c

/* Set up the ethernet LEDs */

//GPIOPinConfigure(GPIO_PF2_LED1);

//GPIOPinConfigure(GPIO_PF3_LED0);

/* Configure the appropriate pins to be I2C instead of GPIO. */

//GPIOPinConfigure(GPIO_PB2_I2C0SCL);

//GPIOPinConfigure(GPIO_PB3_I2C0SDA);

/* Configure the appropriate pins to be I2C instead of GPIO. */

//GPIOPinConfigure(GPIO_PJ0_I2C1SCL);

//GPIOPinConfigure(GPIO_PJ1_I2C1SDA);

/* Enable and configure the peripherals used by the uart. */

//GPIOPinConfigure(GPIO_PA0_U0RX);

//GPIOPinConfigure(GPIO_PA1_U0TX);

/* Configure the pins needed */

//GPIOPinConfigure(GPIO_PA6_USB0EPEN);

//GPIOPinConfigure(GPIO_PA7_USB0PFLT);

As you can see, I've commented out the erronious lines, now it compiles just fine.  However, when I try to debug the program, I get the error message

"ti_sysbios_family_arm_m3__Hwi__execHandlerMax_I(unsigned int*, unsinged int) at ...

Can't find a source file at "/db/vtree/library/trees/mcusdk/mcusdk-a68/product/mcusdk_1_00_00_68/products/bios_6_33_04_39/packages/ti/sysbios/family/arm/m3/Hwi.c" Locate the file or edit the source lookup path to include its location."

Any thoughts?

thanks

So, I think I've partially solved the above error.

In the MCU SDK->SYS/BIOS->BIOS section of the config, I changed the SYS/BIOS library type from the default 'Instrumented" to "Custom" and it is now working.  However, when I pause execution I end up in the

Hwi_excHandlerMax routine of Hwi.c

If I inspect any of the Viewable Modules in the ROV, they all have the error message

"Target memory read failed at address: 0xxxxxxxxx, length: 8, This read is at a VALID address according to the application's section map, but the DebugServer memory read failed."

One thing I find odd, if I modify the *.cmd linker file to resemble those of the other samples for my board (EK_LM3S6965) by changing the line

SRAM (RWX) : origin = 0x20000000, length = 0x00018000

to

length = 0x00010000 (which is how it is setup in all other *.cfg's)

I get the compile time error #10099-D run placement fails for object on the line

Sections

{

     .......

     .bss     :     > SRAM

}

thanks

Hi Luke,

The EK_LM3S6965 only has 64MB of SRAM (0x10000). The linker file should have 0x10000 for the length. The error is that you are running out of RAM.

Todd

Thanks,

How come when I attempt to change the value in *.cmd file it will not complie?  Should there be another change elsewhere I am missing?

Can you attach your .map file and .cfg?

1050.EK_LM3S6965_tcpEcho.txt

3386.tcpEcho.cfg

I had to rename the .map to a .txt

thanks

Sounds good.