Introduction

The STM32 family of 32-bit microcontrollers based on the Arm Cortex^®-M processor is designed to offer new degrees of freedom to MCU users. It offers products combining very high performance, real-time capabilities, digital signal processing, low-power / low-voltage operation, and connectivity, while maintaining full integration and ease of development.

Many Boards are supported out-of-the-box with the middleware GOAL.

Requirements

For evaluation of the software following items are required:

• a NUCLEO board

• optional an adapter board with an Ethernet Switch

• PC with Linux, Windows or MacOS

• Micro USB cable

• Ethernet cable

Software delivery

Extracting

The software comes in different versions, e.g. “0210_119_PROFINET_2.23.0_STM32_CUBE.zip”. The delivery also contains a fully functional project generator, to build projects on your own.

Generate projects with GOAL

To generate a project:

1. Choose an approriate project at commandline

   user: ~ cd GOAL/projects/goal_ecat/01_simple_ioo/gcc

2. Invoke project generator and choose appropriate IDE and template

   user: ~/GOAL/projects/goal_ecat/01_simple_io/gcc make gen_project No platform selected, choose a platform - OR - press <CTRL+c> and set the PLATFORM environment variable. Choose template: [ 1] stm32_cube_h723_eth_2port_lan9354 (gcc,gdb,ocd) ... python3 /home/user/GOAL/projects/goal_ecat/01_simple_io/gcc/../../../../../tools/make/gen_project/gen_project.py gen_project ----------- Project: goal_ecat__01_simple_io__stm32_cube_h723_eth_2port_lan9354 Templates: tools/make/gen_project/templates/stmcubeide/port/stmcubeide_stm32generic_h723_nucleo_eth_ lan9354 Output dir: /home/user/GOAL/projects/goal_ecat/01_simple_io/gcc/../stmcubeide/port/stm32_cube_h723_eth_2port_lan9354

Import Projects into STM32CubeIDE

Several pre-built GOAL example projects for STM32CubeIDE are provided with this delivery, these are located at projects/<protocol>/<application>/stmcubeide/port/<platform>/.project.

Importing the Projects is described here: GOAL Project Generator | STM32CubeIDE.

Platforms

Following table shows the various project types that are part of the software package.

Evaluation

Evaluation on NUCLEO boards

Depending on the Nucleo board an external EEPROM board is required for proper operation. The following NUCLEO boards require this extension:

Open

The extension board X-NUCLEO-EEPRMA2 (https://www.st.com/en/evaluation-tools/x-nucleo-eeprma2.html ) is an extension board for the Nucleo boards Arduino header containing some I2C and SPI eeproms. In order to be abple for the software to write to the EEPROM, the jumper J11 needs to be set to Wpn pin to VCC.

Evaluation with Switch controller

Using an external switch requires a modified custom hardware from port. There a preconfigured switch (KSZ8863) is available. The management of the switch is done through SPI channel 4. Data is transferred using RMII between STM32 and the switch.

Open

The hardware connections between STM32 and peripherals are listed here:

• I2C EEPROM

  • I2C data interface

    • I2C channel 2

      • SCL: PF1

      • SDA: PF0

• Switch KSZ8863

  • SPI management interface

    • SPI channel 4

      • MISO: PE5

      • MOSI: PE6

      • SCLK: PE2

      • NSS: PE4

    • RST: PC0

    • ITR: -

  • DATA interface RMII

    • TXD0: PG13

    • TXD1: PG12

    • TX_EN: PG11

    • RXD0: PC4

    • RXD1: PC5

    • CRS_DV: PA7

    • RMII_CLOCK: PA1

    • MDC: -

    • MDIO: -

Evaluation with EtherCAT

Using EtherCAT requires a modified custom hardware from port. There, the possibility to connect a modified LAN9253 EtherCAT controller is provided. The access to the ESC done through SPI channel 3.

It is possible to use a stand alone NUCLEO board for evaluation of EtherCAT. Then the EtherCAT stamp needs to be connected by hand to the NUCLEO board according to the connection requirements listed below.

• LAN9253 EtherCAT controller:

  • SPI channel 3

    • MISO: PC11

    • MOSI: PB2

    • SCLK: PC110

    • NSS: PA4

  • RST: PG1

  • INT: PC6

  • SYNC0: PB8

  • SYNC1: PB9

Customer Hardware porting

Based on the example projects and the provided CubeMX configuration files (ioc) the software can easily be adapted to any custom hardware.

Evaluation of examples

Please check the following chapter on how to test a PROFINET application with ports Industrial Communication Explorer: Quick Start Guide for GOAL on Raspberry Pi | Profinet Binary .