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True Random generator on CC1310

Alejandro Giraudo
Intellectual 290 points

I want to use the TRNG.

I tryed to configure with:

TRNGReset();

TRNGConfigure(0x4000,0x1000000,0);

And:

HWREG(TRNG_BASE + TRNG_O_SWRESET) = 1;          // Reset the TRNG.
while ( HWREG(TRNG_BASE + TRNG_O_SWRESET));       // Wait for reset

But the execution is blocked in the adress 0x1001bbd4 in both cases.

Can some one help me?

Best Regards.

  • 0
    TI__Guru**** 317180 points
    Why are you running a TRNGReset(); and then the same command written differently?

    Did you try:

    TRNGEnable();

    TRNGConfigure(0x4000,0x1000000,0);

    wait until TRNGStatusGet() returns true

    TRNGNumberGet(...)
  • 0 in reply to TER
    Intellectual 290 points
    Yes, I did.

    The execution never returns form "TRNGConfigure(0x4000,0x1000000,0);"
  • 0 in reply to Alejandro Giraudo
    TI__Guru**** 317180 points

    The rfWsnNode example uses the random generator.

    Two issues:
    1) A dependency has to be included to prevent RTOS to take the chip into standby while preparing the random generator
    Power_setDependency(PowerCC26XX_PERIPH_TRNG);

    TRNGConfigure(0x400,0x10000,0);

    TRNGEnable();
    while(!TRNGStatusGet()); // See the code example for more robust way
    TRNGNumberGet(randomWord);
    TRNGDisable();
    Power_releaseDependency(PowerCC26XX_PERIPH_TRNG);

    2) The first parameter is too big. From the header file: "Value must be bigger than or equal to 2^6 and less than 2^14."