Create a secure and distinctive digital identity using DS2401 and STM32F091RC
Your ID, your signature!
Published Feb 26, 2024
Click board™
UNIQUE ID Click
Dev Board
Nucleo-64 with STM32F091RC MCU
Compiler
NECTO Studio
MCU
STM32F091RC
Unlock a world of possibilities with your personalized digital ID!
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Hardware Overview
How does it work?
Unique ID Click is based on the DS2401, a guaranteed unique 64-bit ROM ID chip from Analog Devices. The 64-bit ROM includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit Family Code (01h). Its internal ROM is accessed via a single data line with a communication speed of up to 16.3Kbps. In perspective, multiple DS2401 devices can reside on a common 1-Wire net, with a built-in multidrop controller that ensures compatibility with other 1-Wire devices. The
DS2401 features presence pulse acknowledgment when the reader first applies a voltage, where the power for reading and writing the device is derived from the data line itself. The Unique ID Click uses a 1-Wire bus interface to communicate to the host MCU through one of the GPIOs (GP0, GP1) of the mikroBUS™ socket, selectable by the onboard GPIO SEL jumper. This protocol defines bus transactions regarding the bus state during specified time slots initiated on the falling edge of
sync pulses from the host bus. All data is read and written the least significant bit first. This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the PWR SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
Features overview
Development board
Nucleo-64 with STM32F091RC MCU offers a cost-effective and adaptable platform for developers to explore new ideas and prototype their designs. This board harnesses the versatility of the STM32 microcontroller, enabling users to select the optimal balance of performance and power consumption for their projects. It accommodates the STM32 microcontroller in the LQFP64 package and includes essential components such as a user LED, which doubles as an ARDUINO® signal, alongside user and reset push-buttons, and a 32.768kHz crystal oscillator for precise timing operations. Designed with expansion and flexibility in mind, the Nucleo-64 board features an ARDUINO® Uno V3 expansion connector and ST morpho extension pin
headers, granting complete access to the STM32's I/Os for comprehensive project integration. Power supply options are adaptable, supporting ST-LINK USB VBUS or external power sources, ensuring adaptability in various development environments. The board also has an on-board ST-LINK debugger/programmer with USB re-enumeration capability, simplifying the programming and debugging process. Moreover, the board is designed to simplify advanced development with its external SMPS for efficient Vcore logic supply, support for USB Device full speed or USB SNK/UFP full speed, and built-in cryptographic features, enhancing both the power efficiency and security of projects. Additional connectivity is
provided through dedicated connectors for external SMPS experimentation, a USB connector for the ST-LINK, and a MIPI® debug connector, expanding the possibilities for hardware interfacing and experimentation. Developers will find extensive support through comprehensive free software libraries and examples, courtesy of the STM32Cube MCU Package. This, combined with compatibility with a wide array of Integrated Development Environments (IDEs), including IAR Embedded Workbench®, MDK-ARM, and STM32CubeIDE, ensures a smooth and efficient development experience, allowing users to fully leverage the capabilities of the Nucleo-64 board in their projects.
Microcontroller Overview
MCU Card / MCU
Architecture
ARM Cortex-M0
MCU Memory (KB)
256
Silicon Vendor
STMicroelectronics
Pin count
64
RAM (Bytes)
32768
You complete me!
Accessories
Click Shield for Nucleo-64 comes equipped with two proprietary mikroBUS™ sockets, allowing all the Click board™ devices to be interfaced with the STM32 Nucleo-64 board with no effort. This way, Mikroe allows its users to add any functionality from our ever-growing range of Click boards™, such as WiFi, GSM, GPS, Bluetooth, ZigBee, environmental sensors, LEDs, speech recognition, motor control, movement sensors, and many more. More than 1537 Click boards™, which can be stacked and integrated, are at your disposal. The STM32 Nucleo-64 boards are based on the microcontrollers in 64-pin packages, a 32-bit MCU with an ARM Cortex M4 processor operating at 84MHz, 512Kb Flash, and 96KB SRAM, divided into two regions where the top section represents the ST-Link/V2 debugger and programmer while the bottom section of the board is an actual development board. These boards are controlled and powered conveniently through a USB connection to program and efficiently debug the Nucleo-64 board out of the box, with an additional USB cable connected to the USB mini port on the board. Most of the STM32 microcontroller pins are brought to the IO pins on the left and right edge of the board, which are then connected to two existing mikroBUS™ sockets. This Click Shield also has several switches that perform functions such as selecting the logic levels of analog signals on mikroBUS™ sockets and selecting logic voltage levels of the mikroBUS™ sockets themselves. Besides, the user is offered the possibility of using any Click board™ with the help of existing bidirectional level-shifting voltage translators, regardless of whether the Click board™ operates at a 3.3V or 5V logic voltage level. Once you connect the STM32 Nucleo-64 board with our Click Shield for Nucleo-64, you can access hundreds of Click boards™, working with 3.3V or 5V logic voltage levels.
Used MCU Pins
mikroBUS™ mapper
Take a closer look
Schematic
Step by step
Project assembly
Start by selecting your development board and Click board™. Begin with the Nucleo-64 with STM32F091RC MCU as your development board.
Track your results in real time
Application Output via Debug Mode
1. Once the code example is loaded, pressing the "DEBUG" button initiates the build process, programs it on the created setup, and enters Debug mode.
2. After the programming is completed, a header with buttons for various actions within the IDE becomes visible. Clicking the green "PLAY" button starts reading the results achieved with the Click board™. The achieved results are displayed in the Application Output tab.
Software Support
Library Description
This library contains API for Unique ID Click driver.
Key functions:
uniqueid_read_id- This function reads Family Code and Serial Number of device's ROM memory
Open Source
Code example
This example can be found in NECTO Studio. Feel free to download the code, or you can copy the code below.
/*!
* @file main.c
* @brief UNIQUE ID Click example.
*
* # Description
* This example demonstrates the use of UNIQUE ID click board by reading and
* displaying Family Code and Serial Number on the UART Terminal.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initializes both logger config object and
* click config object.
*
* ## Application Task
* Demonstrates the usage of uniqueid_read_id function,
* which stores the Family Code and Serial Number of the click in
* family_code and serial_num variables. Both values will be displayed
* on the UART Terminal.
*
* @author Aleksandra Cvjeticanin
*
*/
#include "board.h"
#include "log.h"
#include "uniqueid.h"
static uniqueid_t uniqueid;
static log_t logger;
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
uniqueid_cfg_t uniqueid_cfg; /**< Click config object. */
/**
* Logger initialization.
* Default baud rate: 115200
* Default log level: LOG_LEVEL_DEBUG
* @note If USB_UART_RX and USB_UART_TX
* are defined as HAL_PIN_NC, you will
* need to define them manually for log to work.
* See @b LOG_MAP_USB_UART macro definition for detailed explanation.
*/
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization
uniqueid_cfg_setup( &uniqueid_cfg );
UNIQUEID_MAP_MIKROBUS( uniqueid_cfg, MIKROBUS_1 );
if ( ONE_WIRE_ERROR == uniqueid_init( &uniqueid, &uniqueid_cfg ) )
{
log_error( &logger, " Initialization error." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}
void application_task ( void )
{
uint8_t family_code;
uint8_t serial_num[ 6 ];
if ( UNIQUEID_OK == uniqueid_read_id( &uniqueid, &family_code, &serial_num[ 0 ] ) )
{
log_printf( &logger, "Family Code = 0x%.2X\r\n", ( uint16_t ) family_code );
log_printf( &logger, "Serial Number = 0x%.2X%.2X%.2X%.2X%.2X%.2X\r\n",
( uint16_t ) serial_num[ 0 ], ( uint16_t ) serial_num[ 1 ],
( uint16_t ) serial_num[ 2 ], ( uint16_t ) serial_num[ 3 ],
( uint16_t ) serial_num[ 4 ], ( uint16_t ) serial_num[ 5 ] );
}
Delay_ms( 1000 );
}
void main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
}
// ------------------------------------------------------------------------ END
