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uniqueID.cpp
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uniqueID.cpp
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// Copyright © Luiz Henrique Cassettari. All rights reserved.
// Licensed under the MIT license.
#pragma GCC optimize ("-Ofast")
#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;