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T8b949e// Hardware-rooted device unique ID.

T8b949e//

T8b949e// Derived at boot from factory-burned identifiers — no provisioning required:

T8b949e// ESP32: BT MAC (efuse), via esp_read_mac(mac, ESP_MAC_BT)

T8b949e// nRF52: FICR DEVICEADDR, with the 0xC0 BLE static-random marker applied

T8b949e// so the value matches the address advertised over BLE.

T8b949e//

T8b949e// 6 bytes / 48 bits — the smallest size that preserves the full unique range

T8b949e// of both sources. Independent of ADDR_SERIAL and rnodeconf provisioning.

Tff7b72#Tff7b72ifndef DEVICEUID_H

Tff7b72#Tff7b72define DEVICEUID_H

Tff7b72#Tff7b72include T8b949e<stdint.h>

Tff7b72#Tff7b72include T8b949e<stdio.h>

Tff7b72#Tff7b72include T8b949e"Boards.h"

Tff7b72#Tff7b72if MCU_VARIANT == MCU_ESP32

Tff7b72#Tff7b72if __has_include("esp_mac.h")

Tff7b72#Tff7b72include T8b949e"esp_mac.h"

Tff7b72#Tff7b72endif

Tff7b72#Tff7b72include T8b949e"esp_system.h"

Tff7b72#Tff7b72endif

Tff7b72#Tff7b72define DEVICE_UID_LEN 6

Tff7b72#Tff7b72define DEVICE_UID_STR_LEN 13 T8b949e// 12 hex chars + NUL

Tffa657uint8_t Te6edf3device_uidTb4b4b4[Te6edf3DEVICE_UID_LENTb4b4b4] Tff7b72= Tb4b4b4{T79c0ff0Tb4b4b4}Tb4b4b4;

Tffa657char Te6edf3device_uid_strTb4b4b4[Te6edf3DEVICE_UID_STR_LENTb4b4b4] Tff7b72= Tb4b4b4{T79c0ff0Tb4b4b4}Tb4b4b4;

Tffa657void Td2a8ffdevice_uid_initTb4b4b4(Tb4b4b4) Tb4b4b4{

Tff7b72#Tff7b72if MCU_VARIANT == MCU_ESP32

Te6edf3esp_read_macTb4b4b4(Te6edf3device_uidTb4b4b4, Te6edf3ESP_MAC_BTTb4b4b4)Tb4b4b4;

Tff7b72#Tff7b72elif MCU_VARIANT == MCU_NRF52

Tffa657uint32_t Te6edf3lo Tff7b72= Te6edf3NRF_FICRTff7b72-Tff7b72>Te6edf3DEVICEADDRTb4b4b4[T79c0ff0Tb4b4b4]Tb4b4b4;

Tffa657uint32_t Te6edf3hi Tff7b72= Te6edf3NRF_FICRTff7b72-Tff7b72>Te6edf3DEVICEADDRTb4b4b4[T79c0ff1Tb4b4b4]Tb4b4b4;

Te6edf3device_uidTb4b4b4[T79c0ff0Tb4b4b4] Tff7b72= Tb4b4b4(Te6edf3lo Tb4b4b4) Tff7b72& T79c0ff0xFFTb4b4b4;

Te6edf3device_uidTb4b4b4[T79c0ff1Tb4b4b4] Tff7b72= Tb4b4b4(Te6edf3lo Tff7b72>Tff7b72> T79c0ff8Tb4b4b4) Tff7b72& T79c0ff0xFFTb4b4b4;

Te6edf3device_uidTb4b4b4[T79c0ff2Tb4b4b4] Tff7b72= Tb4b4b4(Te6edf3lo Tff7b72>Tff7b72> T79c0ff16Tb4b4b4) Tff7b72& T79c0ff0xFFTb4b4b4;

Te6edf3device_uidTb4b4b4[T79c0ff3Tb4b4b4] Tff7b72= Tb4b4b4(Te6edf3lo Tff7b72>Tff7b72> T79c0ff24Tb4b4b4) Tff7b72& T79c0ff0xFFTb4b4b4;

Te6edf3device_uidTb4b4b4[T79c0ff4Tb4b4b4] Tff7b72= Tb4b4b4(Te6edf3hi Tb4b4b4) Tff7b72& T79c0ff0xFFTb4b4b4;

Te6edf3device_uidTb4b4b4[T79c0ff5Tb4b4b4] Tff7b72= Tb4b4b4(Tb4b4b4(Te6edf3hi Tff7b72>Tff7b72> T79c0ff8Tb4b4b4) Tff7b72& T79c0ff0xFFTb4b4b4) Tff7b72| T79c0ff0xC0Tb4b4b4;

Tff7b72#Tff7b72endif

Te6edf3snprintfTb4b4b4(Te6edf3device_uid_strTb4b4b4, Te6edf3DEVICE_UID_STR_LENTb4b4b4,

Ta5d6ff"Ta5d6ff%02X%02X%02X%02X%02X%02XTa5d6ff"Tb4b4b4,

Te6edf3device_uidTb4b4b4[T79c0ff0Tb4b4b4]Tb4b4b4, Te6edf3device_uidTb4b4b4[T79c0ff1Tb4b4b4]Tb4b4b4, Te6edf3device_uidTb4b4b4[T79c0ff2Tb4b4b4]Tb4b4b4,

Te6edf3device_uidTb4b4b4[T79c0ff3Tb4b4b4]Tb4b4b4, Te6edf3device_uidTb4b4b4[T79c0ff4Tb4b4b4]Tb4b4b4, Te6edf3device_uidTb4b4b4[T79c0ff5Tb4b4b4]Tb4b4b4)Tb4b4b4;

Tb4b4b4}

Tff7b72#Tff7b72endif T8b949e// DEVICEUID_H