CCS/LAUNCHXL-CC1350: TimerIntRegister(); freeze the application

MAN MCU

Part Number: LAUNCHXL-CC1350
Other Parts Discussed in Thread: CC1350, SYSBIOS

Tool/software: Code Composer Studio

Hi,

If i use the TimerIntRegister(); it will freeze the application and program will not run. the code is shown below:-

TimerConfigure(GPT3_BASE, TIMER_CFG_B_PERIODIC);
TimerPrescaleSet(GPT3_BASE,TIMER_B,0);
TimerLoadSet(GPT3_BASE, TIMER_B, 48000);
TimerIntRegister(GPT3_BASE, TIMER_B,GPT3_B_ISR);
TimerIntEnable(GPT3_BASE, TIMER_TIMB_TIMEOUT);

TimerIntClear(GPT3_BASE, TIMER_TIMB_TIMEOUT);
TimerEnable(GPT3_BASE, TIMER_B);

no Errors

one warning:

Description Resource Path Location Type
#10247-D creating output section ".vtable_ram" without a SECTIONS specification rfWsnDmNode_CC1350_LAUNCHXL_TI_CC1350F128 C/C++ Problem

I think there is an issue with vector table while creating an timer ISR. But i'm new to CC studio. Also let me know how can i switch the vector table to ROM.

over 8 years ago

0 Chester Gillon over 8 years ago

Guru 92251 points

If you add the following to the SECTIONS within the Linker Command File (.cmd) for the project it will tell the linker to place the .vtable_ram section in ram, which should remove the warning and allow TimerIntRegister() to run:

    .vtable_ram     :   > SRAM

0 MAN MCU over 8 years ago in reply to Chester Gillon

Prodigy 200 points

Chester,

Thanks for the reply. It removed the warning. but execution is now freezes at TimerConfigure(); Also have a look at my linker file.

/*
 *  ======== CC1350_LAUNCHXL.cmd ========
 *  CC26x0F128 PG2 linker configuration file for Code Composer Studio
 */

/* Override default entry point.                                             */
--entry_point ResetISR
/* Allow main() to take args                                                 */
--args 0x8
/* Suppress warnings and errors:                                             */
/* - 10063: Warning about entry point not being _c_int00                     */
/* - 16011, 16012: 8-byte alignment errors. Observed when linking in object  */
/*   files compiled using Keil (ARM compiler)                                */
--diag_suppress=10063,16011,16012

/* The starting address of the application.  Normally the interrupt vectors  */
/* must be located at the beginning of the application.                      */
#define FLASH_BASE              0x0
#define FLASH_SIZE              0x20000
#define RAM_BASE                0x20000000
#define RAM_SIZE                0x5000

/* System memory map */

MEMORY
{
    /* Application stored in and executes from internal flash */
    FLASH (RX) : origin = FLASH_BASE, length = FLASH_SIZE
    /* Application uses internal RAM for data */
    SRAM (RWX) : origin = RAM_BASE, length = RAM_SIZE
}

/* Section allocation in memory */

SECTIONS
{
    .text           :   > FLASH
    .const          :   > FLASH
    .constdata      :   > FLASH
    .rodata         :   > FLASH
    .cinit          :   > FLASH
    .pinit          :   > FLASH
    .init_array     :   > FLASH
    .emb_text       :   > FLASH
    .ccfg           :   > FLASH (HIGH)

#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 15009000
    .TI.ramfunc     : {} load=FLASH, run=SRAM, table(BINIT)
#endif
#endif
    .data           :   > SRAM
    .bss            :   > SRAM
    .sysmem         :   > SRAM
    .stack          :   > SRAM (HIGH)
    .nonretenvar    :   > SRAM
    .vtable_ram     :   > SRAM
}

0 Chester Gillon over 8 years ago in reply to MAN MCU

Guru 92251 points

MAN MCU said:
It removed the warning. but execution is now freezes at TimerConfigure(); Also have a look at my linker file.

I can't see any obvious problem with the linker file.

From looking at the CC1350 documentation the clock for GPT3 is disabled at device reset, and attempting to access a peripheral for which the clock is disabled will generate a bus fault.

Before the call to TimerConfigure(), I think the following code is required to ensure the clock for GPT3 is enabled:

        /* if it is not already on, turn on the PERIPH domain */
        if (PRCMPowerDomainStatus(PRCM_DOMAIN_PERIPH) !=
            PRCM_DOMAIN_POWER_ON) {
            PRCMPowerDomainOn(PRCM_DOMAIN_PERIPH);
            while (PRCMPowerDomainStatus(PRCM_DOMAIN_PERIPH) !=
                PRCM_DOMAIN_POWER_ON) {};
        }

        /* now enable the GPT clocks */
        PRCMPeripheralRunEnable(PRCM_PERIPH_TIMER3);
        PRCMPeripheralSleepEnable(PRCM_PERIPH_TIMER3);
        PRCMPeripheralDeepSleepEnable(PRCM_PERIPH_TIMER3);
        PRCMLoadSet();
        while(!PRCMLoadGet()){};

[The above code was taken from the TI-RTOS Timer driver tirtos_cc13xx_cc26xx_2_21_00_06\products\bios_6_46_01_37\packages\ti\sysbios\family\arm\lm4\Timer.c]

0 MAN MCU over 8 years ago in reply to Chester Gillon

Prodigy 200 points

The above solution worked well but ISR is not getting hit. The modified source is as follows.

//System clock = 48MHz

void TimerInit()
{

        if (PRCMPowerDomainStatus(PRCM_DOMAIN_PERIPH) != PRCM_DOMAIN_POWER_ON)
        {

              PRCMPowerDomainOn(PRCM_DOMAIN_PERIPH);

              while (PRCMPowerDomainStatus(PRCM_DOMAIN_PERIPH) != PRCM_DOMAIN_POWER_ON);

         }

/* now enable the GPT clocks */

PRCMPeripheralRunEnable(PRCM_PERIPH_TIMER3);

PRCMPeripheralSleepEnable(PRCM_PERIPH_TIMER3);

PRCMPeripheralDeepSleepEnable(PRCM_PERIPH_TIMER3);

PRCMLoadSet();

while(!PRCMLoadGet()){};

TimerConfigure(GPT3_BASE, TIMER_CFG_B_PERIODIC);

TimerPrescaleSet(GPT3_BASE,TIMER_B,0);

TimerLoadSet(GPT3_BASE, TIMER_B, 48000);

TimerIntRegister(GPT3_BASE, TIMER_B,GPT3_B_ISR);

TimerIntEnable(GPT3_BASE, TIMER_TIMB_TIMEOUT);

TimerIntClear(GPT3_BASE, TIMER_TIMB_TIMEOUT);

       Counter=0;

TimerEnable(GPT3_BASE, TIMER_B);

}

void GPT3_B_ISR(void)
{

if(TimerIntStatus(GPT3_BASE,true)==TIMER_TIMB_TIMEOUT)
{

       TimerIntClear(GPT3_BASE, TIMER_TIMB_TIMEOUT);

       Counter++;

}

}

Let me know what might be wrong.

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CCS/LAUNCHXL-CC1350: TimerIntRegister(); freeze the application