Identifier undefined error

I have a valid question here:

Does that error have anything to do with code being ported from STELLARIS to TIVA ?

This almost certainly some error in configuring your TivaWare code.  I'll move this thread to the Tiva forum.

Thanks and regards

-George

George Mock said:

This almost certainly some error in configuring your TivaWare code.  I'll move this thread to the Tiva forum.

Thanks and regards

-George

Thank you George.

i commented out the following lines of code :

//Disable PORTG Peripheral interrupt
IntDisable(INT_GPIOG);

IntDisable(INT_GPIOE);

The above lines removed 2 errors (they were working just fine in Stellaris, i thought may be TIVA doesnt use this method to disable them)

I am hoping this function does that : GPIOIntDisable();

Only one error remains related to the following line:

// clear any pending NVIC interrupts

NVIC_UNPEND0_R = TIMER2_IRQ;

This line was written to clear some NVIC interrupts( i am not very sure WHAT and WHY), is there some equivalent API for TIVA.

Hi Feroze,

     Are you using Tiva Launchpad?

     I suspect, this error is caused by not properly setting Preprocessor Symbols. Here below is what I have from one of the example programs for Tiva Launchpad.

     PART_TM4C123GH6PM TARGET_IS_BLIZZARD_RB1

-kel

Yes i have TIVA Development Board.

My controller is TM4C123GH6PZ. 

I removed the hw_ints.h from my project, as the controller header seem to have all definitions, so all warnings are gone.

Only issues are:

1. can i remove this IntDisable(INT_GPIOE) (Stellaris Code), if i use this : GPIOIntDisable(PORT,PIN); 

2. How to resolve the error related to this:

NVIC_UNPEND0_R = TIMER2_IRQ; // clear any pending NVIC interrupts (Stellaris Code)

 Error :  #20 identifier "NVIC_EN0_INT24" is undefined

Obviously i didnt understand the code so i could solve it. I took over this project 2 days back and is filled with errors, so i wanted to get rid of the bugs and then understand the code.

NVIC_EN0_INT24 is defined in the header file 'hw_nvic.h' 

but this header is available only in demo codes in this path :

C:\ti\TivaWare_C_Series-2.0.1.11577\third_party\FreeRTOS\Demo\

Hi Feroze,

Is your code originally made for Tiva Development Board? Because, you mentioned "Stellaris Code".

Feroze Mohamed said:

1. can i remove this IntDisable(INT_GPIOE) (Stellaris Code), if i use this : GPIOIntDisable(PORT,PIN); 

I don't see any IntDisable at the Tivaware Peripheral Driver Library Users Guide. I think you can replace that with GPIOIntDisable.

Feroze Mohamed said:

NVIC_UNPEND0_R = TIMER2_IRQ; // clear any pending NVIC interrupts (Stellaris Code)

 Error :  #20 identifier "NVIC_EN0_INT24" is undefined

I don't have this at my Tivaware 1.0. hw_nvic is located at my "\\EK-TM4C123GXL-KEIL-753\inc"

See, this app note below. 

Migrating Software Projects from Stellarisware to Tivaware

-kel

I have both TivaWare 1.0 and 2.0, I am currently using v2.0 for the project.

Following is the search result of the file:

Markel Robregado said:

I don't have this at my Tivaware 1.0. hw_nvic is located at my "\\EK-TM4C123GXL-KEIL-753\inc"

-kel

But that path is board specific, and i am writing the code for project that does not use the Eval Board, so i need to have common header file.

Hi Feroze,

From your search results, the files seems to be for LM3S - "Stellaris".

BTW, I found this API at interrupt.c. See, if using that instead, helps. See, details at the Tivaware Peripheral Driver Library User's Guide

void IntPendClear(uint32_t ui32Interrupt)

-kel

Markel Robregado said:

Hi Feroze,

From your search results, the files seems to be for LM3S - "Stellaris".

BTW, I found this API at interrupt.c. See, if using that instead, helps. See, details at the Tivaware Peripheral Driver Library User's Guide

void IntPendClear(uint32_t ui32Interrupt)

-kel

Thank you, seems to be the API i needed.

In the stellaris code, its register level handling of NVIC_EN0 register interrupt 24.

TIVA also has the same register but NVIC_EN0_INT24 this definition is not there in the TIVA headers.

How can i use the above mentioned API to unpend the interrupt 24 ?

Thank you very much, i wanted this : 'INT_TIMER2A'