Hello,
probably I found a little bug in SDK 13
When I'm trying make a DFU via nRFConnect with prepared pkg by nrfutil I got error. And after debug session i found:
in nrf_crypto_ecdsa.h in line 100 we have a macro to create an instance of an ECDSA signature
#define NRF_CRYPTO_ECDSA_SIGNATURE_CREATE(name, type) \
static uint8_t name ## _buffer[STRING_CONCATENATE(NRF_CRYPTO_ECDSA_SIGNATURE_SIZE_, type)]; \
static nrf_value_length_t name = \
{ \
.p_value = name ## _buffer, \
.length = STRING_CONCATENATE(NRF_CRYPTO_ECDSA_SIGNATURE_SIZE_, type) \
}
Later in micro_ecc_lib_ecdsa.c is checking if p_value is word aligned
// Ensure data is aligned
if (!is_word_aligned(p_private_key->p_value) ||
!is_word_aligned(p_hash->p_value) ||
!is_word_aligned(p_signature->p_value) )
{
return NRF_ERROR_INVALID_ADDR;
}
But it's not and in this case I can't make a DFU
When I added aligment like below:
#define NRF_CRYPTO_ECDSA_SIGNATURE_CREATE(name, type) \
__ALIGN(4) static uint8_t name ## _buffer[STRING_CONCATENATE(NRF_CRYPTO_ECDSA_SIGNATURE_SIZE_, type)]; \
static nrf_value_length_t name = \
{ \
.p_value = name ## _buffer, \
.length = STRING_CONCATENATE(NRF_CRYPTO_ECDSA_SIGNATURE_SIZE_, type) \
}
I'm able to make a DFU.
My solution is correct ? Or I have to change something more ?
BR, Kamil.
