sd_rand_application_vector_get() crashes system

Question

My code: 
 
uint32_t err_code;
uint8_t randomBytes[6];

err_code = sd_rand_application_vector_get(randomBytes, sizeof(randomBytes));

 
 When this function is called my system goes off in the weeds. Anyone else have this problem? 
 =]

Håkon Alseth · Accepted Answer

Try something like this: 
 ``` 
 uint8_t randomBytes[6] = {0,0,0,0,0,0};
 uint8_t bytes_available = 0;
 
 err_code = sd_rand_application_bytes_available_get(&bytes_available);
 APP_ERROR_CHECK(err_code);
 bytes_available = (bytes_available > sizeof(randomBytes) ? sizeof(randomBytes) : bytes_available);
 
 if (bytes_available)
 {
 err_code = sd_rand_application_vector_get(randomBytes, bytes_available); 
 APP_ERROR_CHECK(err_code);
 randomBytes[0] = randomBytes[0]; // Debugging purposes.
 }

```
 
 Note that if you debug and halt on a breakpoint while the softdevice is active, it will get a timing error internally and assert (remember, you halt the MCU, not the peripherals). 
 *edit: formatting, and do remember to check error codes :-) 
 Best regards
Håkon