Modeling
R2026bPrepare the model for hardware connection using STMicroelectronics Discovery boards, add blocks to support hardware protocols.
Support for STMicroelectronics® Discovery™ boards will be removed in a future release.
You can migrate your models that use STM32F4-Discovery library blocks to use the blocks from the STM32F4xx based block libraries. For more information, see Migrate STMicroelectronics STM32F4-Discovery Blocks to STM32F4xx Based Library Blocks and STMCubeMX Workflow.
Blocks
System Core
 | Analog Input | Measure voltage of analog input pin |
 | Digital Read | Read logical state of digital input pin |
 | Digital Write | Set logical state of digital output pin |
 | PWM Output | Generate square wave on the specified output pin |
 | SCI Read | Read N-by-1 array of data on UART |
 | SCI Write | Send N-by-1 array of data to UART |
 | External Interrupt | Trigger the downstream function-call subsystem from an Interrupt Service Routine |
Multimedia
 | Audio Input | Read audio sample from audio devices on STMicroelectronics STM32F746G/STM32F769I–Discovery board |
 | Audio Output | Send processed audio samples to audio devices on STMicroelectronics STM32F746G/STM32F769I–Discovery board |
Communication
 | I2C Controller Read | Read data from I2C Peripheral devices or I2C Peripheral devices register |
 | I2C Controller Write | Write data to I2C peripheral devices or I2C peripheral devices register |
 | SPI Controller Transfer | Write data to and read data from SPI peripheral devices |
 | SPI Register Read | Read data from SPI peripheral devices register |
 | SPI Register Write | Write data to registers of SPI peripheral devices |
 | Modbus RS485 Client Read | Client device reads data from server device register(s) over RS485 network |
 | Modbus RS485 Client Write | Client device writes data to server device register(s) over RS485 network |
 | Modbus RS485 Server Write | Server device writes data to server device register over RS485 network |
 | Modbus RS485 Server Read | Server device reads data from the server device register over RS485 network |
Network
 | TCP Receive | Receive data over TCP/IP network from remote host |
 | TCP Send | Send data over TCP/IP network to remote host |
 | UDP Receive | Receive UDP packets from UDP host |
 | UDP Send | Send UDP packets to UDP host |
System Core
| Audio Input | Read audio sample from audio devices on STMicroelectronics STM32F746G/STM32F769I–Discovery board |
| Audio Output | Send processed audio samples to audio devices on STMicroelectronics STM32F746G/STM32F769I–Discovery board |
| Digital Read | Read logical state of digital input pin |
| Digital Write | Set logical state of digital output pin |
| PWM Output | Generate square wave on the specified output pin |
| SCI Read | Read N-by-1 array of data on UART |
| SCI Write | Send N-by-1 array of data to UART |
| External Interrupt | Trigger the downstream function-call subsystem from an Interrupt Service Routine |
Multimedia
| Audio Input | Read audio sample from audio devices on STMicroelectronics STM32F746G/STM32F769I–Discovery board |
| Audio Output | Send processed audio samples to audio devices on STMicroelectronics STM32F746G/STM32F769I–Discovery board |
Communication
| I2C Controller Read | Read data from I2C Peripheral devices or I2C Peripheral devices register |
| I2C Controller Write | Write data to I2C peripheral devices or I2C peripheral devices register |
| SPI Controller Transfer | Write data to and read data from SPI peripheral devices |
| SPI Register Read | Read data from SPI peripheral devices register |
| SPI Register Write | Write data to registers of SPI peripheral devices |
| Modbus RS485 Client Read | Client device reads data from server device register(s) over RS485 network |
| Modbus RS485 Client Write | Client device writes data to server device register(s) over RS485 network |
| Modbus RS485 Server Write | Server device writes data to server device register over RS485 network |
| Modbus RS485 Server Read | Server device reads data from the server device register over RS485 network |
Network
| TCP Receive | Receive data over TCP/IP network from remote host |
| TCP Send | Send data over TCP/IP network to remote host |
| UDP Receive | Receive UDP packets from UDP host |
| UDP Send | Send UDP packets to UDP host |
Internet of Things
 | WiFi TCP Receive | Receive TCP/IP packets from another TCP/IP host on internet network |
 | WiFi TCP Send | Send TCP/IP packets to another TCP/IP host on internet network |
 | ThingSpeak Read | Read data stored in ThingSpeak channel |
 | ThingSpeak Write | Publish data to Internet of Things using ThingSpeak |
Sensors
 | HTS221 Humidity Sensor | Measure relative humidity and temperature from HTS221 sensor (Since R2025a) |
 | LIS3MDL Magnetometer Sensor | Measure magnetic field strength and temperature from LIS3MDL Magnetometer sensor (Since R2025a) |
 | LPS22HB Pressure Sensor | Measure barometric air pressure and temperature from LPS22HB sensor (Since R2025a) |
 | LSM6DSL IMU Sensor | Measure linear acceleration, angular rate, and temperature from LSM6DSL sensor (Since R2025a) |
Utilities Blocks
 | Byte Pack | Convert input signals to uint8 vector |
 | Byte Unpack | Convert uint8 vector to input signals |
 | Byte Reversal | Reverse order of bytes in input word |
 | Memory Copy | Copy data from and to memory section |
Model Settings
Topics
- Open Block Library for STM32 Microcontroller Blockset
Open Block Library STM32™ Microcontroller Blockset.
- Configure Network Settings for STMicroelectronics Discovery Boards Ethernet Resource
Configure network settings for STMicroelectronics Discovery Boards Ethernet resource.
- Log Signals on SD Card
Log signals from Simulink® models on an SD card mounted on the target hardware.
- Usage of Alternate Pin Names
Accessing multiple hardware peripherals connected to the same pin using alternate pin names.
- Set Up and Configure Armclang Compiler Toolchain for Code Generation
Set up and configure Armclang compiler toolchain for code generation.
Featured Examples
Get Started with STMicroelectronics Discovery Boards
Demonstrates how to use the STM32 (TM) Microcontroller Blockset to run a Simulink® model on an STMicroelectronics STM32F746G-Discovery or STM32F769I-Discovery board.
Code Optimization Using CMSIS DSP Library
Use code replacement libraries for ARM® Cortex®-M processors to generate optimized code for the STMicroelectronics® STM32F4-Discovery board using STM32™ Microcontroller Blockset.
Push Button and LED
Use the GPIO blocks to control the push-button and the LED components by using the STM32™ Microcontroller Blockset.
Parametric Audio Equalizer for STM32 Discovery Boards
Model a three band parametric equalizer algorithm and run it on the ARM® Cortex®-M based STMicroelectronics® STM32 Discovery boards using STM32™ Microcontroller Blockset.
G.729 Voice Activity Detection for STM32 Processor Based Board
Model the ITU-T G.729 Voice Activity Detector (VAD) algorithm and run it on the ARM® Cortex®-M based STMicroelectronics® STM32 boards using STM32™ Microcontroller Blockset.
Asynchronous Scheduling for STM32F4-Discovery Board
Model asynchronous scheduling using the Hardware Interrupt block for the STMicroelectronics® STM32F4xx processor board using Asynchronous Scheduling for STM32F4-Discovery Board using STM32™ Microcontroller Blockset.
Exchanging Ethernet Data with STM32F746G Discovery Board
Use STM32™ Microcontroller Blockset to run on the STM32F746G Discovery Board to send and receive the UDP and TCP messages.
Read Data from I2C-Based Sensors on STM32L475VG Discovery Board
Use the STM32™ Microcontroller Blockset to configure and read data from these sensors on the STM32L475VG Discovery (B-L475E-IOT01A) board:
MODBUS RS485 Communication Between Client and Server Devices Using STMicroelectronics Discovery Board
Use the STM32™ Microcontroller Blockset to implement a MODBUS® RS485 asynchronous, serial communication between MODBUS client and server devices. The example also shows the four modes of operation: Client Read, Client Write, Server Read, and Server Write.
