AES ECB HardFault on init

[andrey]

I'm using SDK's interface for AES ECB block, but getting a hard fault when ECBDATAPTR is redirected at ecb_data in the initialisation function:

static uint8_t  ecb_data[48];   ///< ECB data structure for RNG peripheral to access.
static uint8_t* ecb_key;        ///< Key:        Starts at ecb_data 
static uint8_t* ecb_cleartext;  ///< Cleartext:  Starts at ecb_data + 16 bytes.
static uint8_t* ecb_ciphertext; ///< Ciphertext: Starts at ecb_data + 32 bytes.

bool nrf_ecb_init(void)
{
  ecb_key = ecb_data;
  ecb_cleartext  = ecb_data + 16;
  ecb_ciphertext = ecb_data + 32;

  NRF_ECB->ECBDATAPTR = (uint32_t)ecb_data;
  return true;
}

I've tried increasing ecb_data size and aligning it across 4 bytes, but it doesn't help. I'm using SDK 8.0.0. What's wrong?

[andrey]

Answered here.