// Copyright © Luiz Henrique Cassettari. All rights reserved.

// Licensed under the MIT license.

#include "uniqueID.h"

ArduinoUniqueID::ArduinoUniqueID()

{

#if defined(ARDUINO_ARCH_AVR)

for (size_t i = 0; i < UniqueIDsize; i++)

{

id[i] = boot_signature_byte_get(0x0E + i + (UniqueIDsize == 9 && i > 5 ? 1 : 0));

}

#elif defined(ARDUINO_ARCH_ESP8266)

uint32_t chipid = ESP.getChipId();

id[0] = 0;

id[1] = 0;

id[2] = 0;

id[3] = 0;

id[4] = chipid >> 24;

id[5] = chipid >> 16;

id[6] = chipid >> 8;

id[7] = chipid;

#elif defined(ARDUINO_ARCH_ESP32)

uint64_t chipid = ESP.getEfuseMac();

id[0] = 0;

id[1] = 0;

id[2] = chipid;

id[3] = chipid >> 8;

id[4] = chipid >> 16;

id[5] = chipid >> 24;

id[6] = chipid >> 32;

id[7] = chipid >> 40;

#elif defined(ARDUINO_ARCH_SAM)

uint16_t status ;

/* Send the Start Read unique Identifier command (STUI) by writing the Flash Command Register with the STUI command.*/

EFC1->EEFC_FCR = (0x5A << 24) | EFC_FCMD_STUI;

do

{

status = EFC1->EEFC_FSR ;

} while ( (status & EEFC_FSR_FRDY) == EEFC_FSR_FRDY ) ;

/* The Unique Identifier is located in the first 128 bits of the Flash memory mapping. So, at the address 0x400000-0x400003. */

uint32_t pdwUniqueID[4];

pdwUniqueID[0] = *(uint32_t *)IFLASH1_ADDR;

pdwUniqueID[1] = *(uint32_t *)(IFLASH1_ADDR + 4);

pdwUniqueID[2] = *(uint32_t *)(IFLASH1_ADDR + 8);

pdwUniqueID[3] = *(uint32_t *)(IFLASH1_ADDR + 12);

for (uint8_t i = 0; i < 4; i++)

{

id[i*4+0] = (uint8_t)(pdwUniqueID[i] >> 24);

id[i*4+1] = (uint8_t)(pdwUniqueID[i] >> 16);

id[i*4+2] = (uint8_t)(pdwUniqueID[i] >> 8);

id[i*4+3] = (uint8_t)(pdwUniqueID[i] >> 0);

}

/* To stop the Unique Identifier mode, the user needs to send the Stop Read unique Identifier

command (SPUI) by writing the Flash Command Register with the SPUI command. */

EFC1->EEFC_FCR = (0x5A << 24) | EFC_FCMD_SPUI ;

/* When the Stop read Unique Unique Identifier command (SPUI) has been performed, the

FRDY bit in the Flash Programming Status Register (EEFC_FSR) rises. */

do

{

status = EFC1->EEFC_FSR ;

} while ( (status & EEFC_FSR_FRDY) != EEFC_FSR_FRDY );

#elif defined(ARDUINO_ARCH_SAMD)

#if defined (__SAMD51__)

// SAMD51 from section 9.6 of the datasheet

#define SERIAL_NUMBER_WORD_0 *(volatile uint32_t*)(0x008061FC)

#define SERIAL_NUMBER_WORD_1 *(volatile uint32_t*)(0x00806010)

#define SERIAL_NUMBER_WORD_2 *(volatile uint32_t*)(0x00806014)

#define SERIAL_NUMBER_WORD_3 *(volatile uint32_t*)(0x00806018)

#else

//#elif defined (__SAMD21E17A__) || defined(__SAMD21G18A__) || defined(__SAMD21E18A__) || defined(__SAMD21J18A__)

// SAMD21 from section 9.3.3 of the datasheet

#define SERIAL_NUMBER_WORD_0 *(volatile uint32_t*)(0x0080A00C)

#define SERIAL_NUMBER_WORD_1 *(volatile uint32_t*)(0x0080A040)

#define SERIAL_NUMBER_WORD_2 *(volatile uint32_t*)(0x0080A044)

#define SERIAL_NUMBER_WORD_3 *(volatile uint32_t*)(0x0080A048)

#endif

uint32_t pdwUniqueID[4];

pdwUniqueID[0] = SERIAL_NUMBER_WORD_0;

pdwUniqueID[1] = SERIAL_NUMBER_WORD_1;

pdwUniqueID[2] = SERIAL_NUMBER_WORD_2;

pdwUniqueID[3] = SERIAL_NUMBER_WORD_3;

for (uint8_t i = 0; i < 4; i++)

{

id[i*4+0] = (uint8_t)(pdwUniqueID[i] >> 24);

id[i*4+1] = (uint8_t)(pdwUniqueID[i] >> 16);

id[i*4+2] = (uint8_t)(pdwUniqueID[i] >> 8);

id[i*4+3] = (uint8_t)(pdwUniqueID[i] >> 0);

}

#elif defined(ARDUINO_ARCH_STM32)

uint32_t pdwUniqueID[3];

pdwUniqueID[0] = HAL_GetUIDw0();

pdwUniqueID[1] = HAL_GetUIDw1();

pdwUniqueID[2] = HAL_GetUIDw2();

for (uint8_t i = 0; i < 3; i++)

{

id[i*4+0] = (uint8_t)(pdwUniqueID[i] >> 24);

id[i*4+1] = (uint8_t)(pdwUniqueID[i] >> 16);

id[i*4+2] = (uint8_t)(pdwUniqueID[i] >> 8);

id[i*4+3] = (uint8_t)(pdwUniqueID[i] >> 0);

}

#elif defined(ARDUINO_TEENSY40) || defined (ARDUINO_TEENSY41)

uint32_t uid0 = HW_OCOTP_CFG0;

uint32_t uid1 = HW_OCOTP_CFG1;

id[0] = uid0 >> 24;

id[1] = uid0 >> 16;

id[2] = uid0 >> 8;

id[3] = uid0;

id[4] = uid1 >> 24;

id[5] = uid1 >> 16;

id[6] = uid1 >> 8;

id[7] = uid1;

#elif defined(TEENSYDUINO)

uint8_t mac[6];

uint8_t sn[4];

uint32_t num = 0;

__disable_irq();

#if defined(HAS_KINETIS_FLASH_FTFA) || defined(HAS_KINETIS_FLASH_FTFL)

FTFL_FSTAT = FTFL_FSTAT_RDCOLERR | FTFL_FSTAT_ACCERR | FTFL_FSTAT_FPVIOL;

FTFL_FCCOB0 = 0x41;

FTFL_FCCOB1 = 15;

FTFL_FSTAT = FTFL_FSTAT_CCIF;

while (!(FTFL_FSTAT & FTFL_FSTAT_CCIF)) ; // wait

num = *(uint32_t *)&FTFL_FCCOB7;

#elif defined(HAS_KINETIS_FLASH_FTFE)

kinetis_hsrun_disable();

FTFL_FSTAT = FTFL_FSTAT_RDCOLERR | FTFL_FSTAT_ACCERR | FTFL_FSTAT_FPVIOL;

*(uint32_t *)&FTFL_FCCOB3 = 0x41070000;

FTFL_FSTAT = FTFL_FSTAT_CCIF;

while (!(FTFL_FSTAT & FTFL_FSTAT_CCIF)) ; // wait

num = *(uint32_t *)&FTFL_FCCOBB;

kinetis_hsrun_enable();

#endif

__enable_irq();

sn[0] = num >> 24;

sn[1] = num >> 16;

sn[2] = num >> 8;

sn[3] = num;

mac[0] = 0x04;

mac[1] = 0xE9;

mac[2] = 0xE5;

mac[3] = sn[1];

mac[4] = sn[2];

mac[5] = sn[3];

id[0] = SIM_UIDML >> 24;

id[1] = SIM_UIDML >> 16;

id[2] = SIM_UIDML >> 8;

id[3] = SIM_UIDML;

id[4] = SIM_UIDL >> 24;

id[5] = SIM_UIDL >> 16;

id[6] = 0x40; // marked as version v4, but this uuid is not random based !!!

id[7] = SIM_UIDL >> 8;

id[8] = 0x80; //variant

id[9] = SIM_UIDL;

id[10] = mac[0];

id[11] = mac[1];

id[12] = mac[2];

id[13] = mac[3];

id[14] = mac[4];

id[15] = mac[5];

#elif defined(ARDUINO_ARCH_MBED_RP2040)

getUniqueSerialNumber(id);

#elif defined(ARDUINO_ARCH_MEGAAVR)

id[0] = SIGROW.SERNUM0;

id[1] = SIGROW.SERNUM1;

id[2] = SIGROW.SERNUM2;

id[3] = SIGROW.SERNUM3;

id[4] = SIGROW.SERNUM4;

id[5] = SIGROW.SERNUM5;

id[6] = SIGROW.SERNUM6;

id[7] = SIGROW.SERNUM7;

id[8] = SIGROW.SERNUM8;

id[9] = SIGROW.SERNUM9;

#endif

}

ArduinoUniqueID _UniqueID;