ST Nucleo STM32F302R8 Bedienungsanleitung

September 2014 DocID026524 Rev 2 1/18

UM1784

User manual

STM32CubeF3 Nucleo demonstration firmware

Introduction

STMCubeTM initiative was originated by STMicroelectronics to ease developers’ life by

reducing development efforts, time and cost. STM32Cube covers STM32 portfolio.

STM32Cube Version 1.x includes:

•The STM32CubeMX, a graphical software configuration tool that allows to generate C

initialization code using graphical wizards.

•A comprehensive embedded software platform, delivered per series (such as

STM32CubeF3 for STM32F3 series)

– The STM32CubeF3 HAL, an STM32 abstraction layer embedded software, ensuring

maximized portability across STM32 portfolio

– A consistent set of middleware components such as RTOS, USB, STMTouch and

FatFs

– All embedded software utilities coming with a full set of examples.

The STM32CubeF3 Nucleo Demonstration platform is built around the STM32Cube HAL,

BSP and FatFs middleware component and uses almost the whole STM32 capability to load

and display full color bitmaps from a microSD card.

www.st.com

Contents UM1784

2/18 DocID026524 Rev 2

Contents

1 STM32CubeF3 main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Getting started with the demonstration . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Hardware requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1.1 STM32F302R8, STM32F303RE or STM32F334R8 Nucleo boards . . . . 6

2.1.2 Adafruit TFT shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2 Hardware configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2.1 STM32 Nucleo board configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2.2 Assembling the Adafruit shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3 Demonstration firmware package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.1 Demonstration repository . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.2 Nucleo board BSP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2.1 Joystick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2.2 LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2.3 MicroSD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4 Demo functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.1 Programming firmware application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5 FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

DocID026524 Rev 2 3/18

UM1784 List of tables

List of tables

Table 1. Bitmap image properties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 2. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

List of figures UM1784

4/18 DocID026524 Rev 2

List of figures

Figure 1. STM32Cube block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2. STM32F302 Nucleo board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3. Adafruit 1.8” TFT shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4. Assembling the Adafruit 1.8” TFT shield. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5. Folder structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6. Nucleo BSP architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 7. Demonstration application menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 8. Reading the Adafruit shield Joystick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 9. Demonstration application error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 10. Demonstration running . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

DocID026524 Rev 2 5/18

UM1784 STM32CubeF3 main features

1 STM32CubeF3 main features

STM32CubeF3 gathers together, in a single package, all the generic embedded software

components required to develop an application on STM32F3 microcontrollers. In line with

the STM32Cube initiative, this set of components is highly portable, not only within the

STM32F3 series but also to other STM32 series.

STM32CubeF3 is fully compatible with STM32CubeMX code generator that allows the user

to generate initialization code. The package includes a low level hardware abstraction layer

(HAL) that covers the microcontroller hardware, together with an extensive set of examples

running on STMicroelectronics boards. The HAL is available in an open-source BSD license

for user convenience.

STM32CubeF3 package features a set of middleware components with the corresponding

examples. They come with very permissive license terms:

•Full USB Device stack supporting many classes (HID, MSC, CDC, Audio, DFU)

•CMSIS-RTOS implementation with FreeRTOS open source solution

•FAT File system based on open source FatFs solution

•STMTouch touch sensing solution.

A demonstration implementing all these middleware components is also provided in the

STM32CubeF3 package.

The block diagram of STM32Cube is shown in Figure 1.

Figure 1. STM32Cube block diagram

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Getting started with the demonstration UM1784

6/18 DocID026524 Rev 2

2 Getting started with the demonstration

2.1 Hardware requirements

The hardware requirements to start the demonstration application are as follows:

•STM32F302R8, STM32F303RE or STM32F334R8 Nucleo boards

•Adafruit 1.8" TFT shield with Joystick and microSD (reference ID: 802)

•one 'USB type A to Mini-B' cable to power up the STM32 Nucleo board from the USB

ST-LINK (USB connector CN1)

•a Standard Capacity SD card (SDSC) with a capacity up to 4GBytes.

2.1.1 STM32F302R8, STM32F303RE or STM32F334R8 Nucleo boards

The STM32 Nucleo board is a low-cost and easy-to-use development kit to quickly evaluate

and start some development with ARM®32-bit Cortex®-M microcontrollers of the STM32

series (STM32F103, STM32F030, STM32F072, STM32L152 and STM32L053). Before

installing and using the product, please accept the Evaluation Product License Agreement

available at www.st.com/epla.

For more information on the STM32 Nucleo board visit www.st.com/stm32nucleo.

Figure 2. STM32F302 Nucleo board

DocID026524 Rev 2 7/18

UM1784 Getting started with the demonstration

2.1.2 Adafruit TFT shield

The STM32 Nucleo board supports Arduino connectivity.

This Adafruit 1.8" TFT shield may be found on the Adafruit website (reference ID 802) with

the following features:

•one 1.8” TFT display with 128x160 color pixels

•one microSD card interface slot

•one 5-way joystick navigation switch (left, right, up, down, select).

Figure 3. Adafruit 1.8” TFT shield

Note: This shield is just an example of Arduino shield usage; you can get more details on Adafruit

website.

2.2 Hardware configuration

In addition to gathering the hardware please follow the recommendations below, to start

using the Adafruit 1.8” TFT shield with the STM32 Nucleo board.

2.2.1 STM32 Nucleo board configuration

Check jumpers’ positions on the STM32 Nucleo board as follows:

•JP1 OFF

•JP5 (PWR) on U5V side ON

•JP6 (IDD) ON.

Getting started with the demonstration UM1784

8/18 DocID026524 Rev 2

2.2.2 Assembling the Adafruit shield

The Adafruit TFT shield comes with all surface mount parts pre-soldered. User can install

the headers following the next steps:

•Cut the breakaway header strip into sections to fit the holes on the edge of the shield:

two sections of 6 pins and two other sections of 8 pins are needed.

•To align the header strips for soldering, insert them (long pins down) into the headers of

the STM32 Nucleo board using the connectors CN5, CN6, CN8 and CN9.

•Place the shield over the header strips so that the short pins stick up through the holes.

•Solder on each pin of the header onto the shield PCB to ensure good electrical contact.

The sequence is shown in Figure 4.

Figure 4. Assembling the Adafruit 1.8” TFT shield

DocID026524 Rev 2 9/18

UM1784 Demonstration firmware package

3 Demonstration firmware package

3.1 Demonstration repository

The Nucleo demonstration is provided within the STM32CubeF3 firmware package, as

shown in Figure 5.

Figure 5. Folder structure

The demonstration sources are located in the projects folder of the STM32Cube package for

all of the STM32F302R8, STM32F303RE and STM32F334R8 Nucleo boards.The sources

are divided into five groups described as follows:

1. Binary: demonstration binary file in Hex format

Demonstration firmware package UM1784

10/18 DocID026524 Rev 2

2. Media: the media files (*.bmp) required to run the demonstration are available under

the FW package Utilities\Media\Images folder

3. Inc: contains the demonstration header files

4. Src: contains the demonstration source files

5. Project settings: a folder per toolchain containing the project settings and the linker

files.

3.2 Nucleo board BSP

For each board, a set of Button, LED and Joystick drivers is available within the

stm32f3xx_nucleo.c/.h files, implementing the board capabilities and the bus link

mechanism.

Figure 6. Nucleo BSP architecture

3.2.1 Joystick

The 5-way joystick on the shield is based on a resistor trick to permit all the switches to

share one analog pin. Each movement of the joystick control connects a different resistor

and results in a different voltage reading.

The ADC peripheral is configured within the stm32f3xx_nucleo.c/.h driver in order to get

analog voltage values through the analog I/O pin 3.

The BSP_JOY_GetState() function reads the analog pin and compares the result with 5

different ranges to determine which (if any) direction the stick has been moved (left, right,

up, down, select).

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