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C28X memcpy problem when stand-alone

Mauro Fantina
Genius 3800 points

Other Parts Discussed in Thread: CONTROLSUITE

I've notice a problem in Concerto device when run stand-alone (without emulator)

on C28X part ....

  • 0
    Genius 3800 points

    I've made some tests and I notice that

    "rumfunctions" doesn't work even if I copy code from flash to ram using

    	extern Uint16 RamfuncsLoadStart;
	extern Uint16 RamfuncsLoadSize;
	extern Uint16 RamfuncsRunStart;
	memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);

    because I try to blink a LED using 

    DELAY_US(100000L);

    but processor seems to stall in this routine

  • 0 in reply to Mauro Fantina
    Genius 3800 points

    I load

    {$CONTROLSUITE}\device_support\f28m35x\v200\F28M35x_examples_Dual\flash_exe

    both C28X and M3 code,

    I modify M3 code adding below snippet to leave C28X turn on/off LD3 on demo board

    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
GPIOPinConfigureCoreSelect(GPIO_PORTC_BASE, GPIO_PIN_7, GPIO_PIN_C_CORE_SELECT);

    I modify C28X code adding below snippet

        for(;;)
    {
#ifdef _DELAY_US_CODE
    	DELAY_US(100000L);
#else
    	long z=(150E6)/32;
    	while(z--)asm(" nop");
#endif
    	EALLOW;
    	GpioCtrlRegs.GPCDIR.bit.GPIO71	= 1;
    	GpioDataRegs.GPCDAT.bit.GPIO71	= !GpioDataRegs.GPCDAT.bit.GPIO71;
    	EDIS;
    }

    if I use while (which is in flash) LD3 blink, if I use DELAY_US (which is in RAM, copied by memcpy) LD3 doesn't blink,

    remember that I'm not using emulator and M3 call 

    IPCMtoCBootControlSystem(CBROM_MTOC_BOOTMODE_BOOT_FROM_FLASH);

    can someone help me ?