Unique ID for device detection.

[heysadboy]

I was wondering if I can get a unique ID for the device to register them in the cloud etc.
Although there is a unique ID for microcontroller and EEPROM but I am thinking if there is any for the device itself.

[TE-KarlKomierowski]

Hi @heysadboy

I will have to investigate and comeback to you.
But would it be a problem for you creating a file in the filesystem with a number that you generate?

BR

[heysadboy]

That is a nice idea. However, I am looking for something set up at the factory. I am not a security expert but my idea is to identify the device uniquely for initial authentication etc.

I found that I can have a microcontroller ID to identify the device. I was thinking to put something on the flash memory of the device but it might be tempered...

If there is any document where I can read more about the security of sony spresense please guide me I will be very grateful to you.

[Koizumi]

Hi @heysadboy

Chip has Unique ID. And your application can get it by calling board_uniqueid().
To call that, you need to include "board.h" on your c source file.

Please try it.

BR

[m Lewis]

Please make the board Unique ID available from the Arduino support library, or provide a working example showing how to use it from Arduino.
Thank you

[KamilTomaszewski]

@m-Lewis

Below is the code that shows how to get board unique ID using Arduino:

#include <sys/boardctl.h>

void setup() {
  uint8_t raw_id[CONFIG_BOARDCTL_UNIQUEID_SIZE];
  Serial.begin(115200);

  boardctl(BOARDIOC_UNIQUEID, (uintptr_t) raw_id);
  for (int i = 0; i < CONFIG_BOARDCTL_UNIQUEID_SIZE; i++) {
    Serial.print(raw_id[i], HEX);
  }
}

void loop() {
}

[m Lewis]

Kamil,
Yes, using boardctl() does work and provides the UniqueID from Arduino. Thank you! I guess <sys/boardctl.h> is included in one of my other includes since I didn't need it.
M.Lewis