OLIMEXINO-STM32

Overview

Zephyr applications use the olimexino_stm32 board configuration to run on the OLIMEXINO-STM32 open source hardware. It based on the STMicroelectronics STM32F103RB ARM Cortex-M3 CPU.

OLIMEXINO-STM32

OLIMEXINO-STM32

More information about the board can be found at the OLIMEXINO-STM32 website and OLIMEXINO-STM32 user manual. The ST STM32F103xB Datasheet contains the processor’s information and the datasheet.

Supported Features

The olimexino_stm32 board configuration supports the following hardware features:

Interface Controller Driver/Component
NVIC on-chip nested vectored interrupt controller
SYSTICK on-chip system clock
UART on-chip serial port
GPIO on-chip gpio
I2C on-chip i2c
SPI on-chip spi
USB on-chip USB device

Other hardware features are not supported by the Zephyr kernel.

Pin Mapping

OLIMEXINO-STM32 connectors

OLIMEXINO-STM32 connectors

LED

  • LED1 (green) = PA5
  • LED2 (yellow) = PA1
  • PWR_LED (red) = power

Push buttons

  • BUT = PC9 / TIM3CH4 / BOOT0
  • RST = NRST

External Connectors

SWD

PIN # Signal Name STM32F103RB Functions
1 VCC N/A
2 TMS / SWDIO JTMS / SWDIO / PA13
3 GND N/A
4 TCK / SWCLK JTCK / SWCLK / PA14
5 GND N/A
6 TDO / SWO JTDO /TIM2_CH2 / PB3 / TRACESWO / SPI1_SCK
7 Cut off N/A
8 TDI JTDI / TIM2_CH1_ETR / PA15 / SPI1_NSS
9 GND N/A
10 RESET NRST

UEXT

PIN # Signal Name STM32F103RB Functions
1 VCC N/A
2 GND N/A
3 D7 (TXD1) PA9 / USART1_TX / TIM1_CH2
4 D8 (RXD1) PA10 / USART1_RX / TIM1_CH3
5 D29 (SCL2) PB10 / I2C2_SCL / USART3_TX / TIM2_CH3
6 D30 (SDA2) PB11 / I2C2_SDA / USART3_RX / TIM2_CH4
7 D12 (MISO1) PA6 / SPI1_MISO / ADC12_IN6 / TIM3_CH1 / TIM1_BKIN
8 D11 (MOSI1) PA7 / SPI1_MOSI / ADC12_IN7 / TIM3_CH2 / TIM1_CH1N
9 D13 (SCK / LED1) PA5 / SPI1_SCK / ADC12_IN5
10 UEXT_#CS N/A

EXT

PIN # Signal Name STM32F103RB Functions
1 D23_EXT PC15 / OSC32_OUT
2 D24 (CANTX) PB9 / TIM4_CH4 / I2C1_SDA / CANTX
3 D25 (MMC_CS) PD2 / TIM3_ETR
4 D26 PC10 / USART3_TX
5 D27 PB0 / ADC12_IN8 / TIM3_CH3 / TIM1_CH2N
6 D28 PB1 / ADC12_IN9 / TIM3_CH4 / TIM1_CH3N
7 D29 (SCL2) PB10 / I2C2_SCL / USART3_TX / TIM2_CH3
8 D30 (SDA2) PB11 / I2C2_SDA / USART3_RX / TIM2_CH4
9 D31 (#SS2) PB12 / SPI2_NSS / I2C2_SMBAI / USART3_CK / TIM1_BKIN
10 D32 (SCK2) PB13 / SPI2_SCK/ USART3_CTS / TIM1_CH1N
11 D33 (MISO2) PB14 / SPI2_MISO / USART3_RTS / TIM1_CH2N
12 D34 (MOSI2) PB15 / SPI2_MOSI / TIM1_CH3N
13 D35 PC6 / TIM3_CH1
14 D36 PC7 / TIM3_CH2
15 D37 PC8 / TIM3_CH3
16 GND N/A

Arduino Headers

CON1 power

PIN # Signal Name STM32F103RB Functions
1 RESET NRST
2 VCC (3V3) N/A
3 VDD (3V3A) N/A
4 GND N/A
5 GND N/A
6 VIN N/A

CON2 analog

PIN # Signal Name STM32F103RB Functions
1 D15 (A0) PC0 / ADC12_IN10
2 D16 (A1) PC1 / ADC12_IN11
3 D17 (A2) PC2 / ADC12_IN12
4 D18 (A3) PC3 / ADC12_IN13
5 D19 (A4) PC4 / ADC12_IN14
6 D20 (A5) PC5 / ADC12_IN15

CON3 digital

PIN # Signal Name STM32F103RB Functions
1 D0 (RXD2) PA3 / USART2_RX / ADC12_IN3 / TIM2_CH4
2 D1 (TXD2) PA2 / USART2_TX / ADC12_IN2 / TIM2_CH3
3 D2 PA0 / WKUP / USART2_CTS / ADC12_IN0 / TIM2_CH1
4 D3 (LED2) PA1 / USART2_RTS / ADC12_IN1 / TIM2_CH2
5 D4 PB5 / I2C1_SMBAI / TIM3_CH2 / SPI1_MOSI
6 D5 PB6 / I2C1_SCL / TIM4_CH1 / USART1_TX
7 D6 PA8 / USART1_CK / TIM1_CH1 / MCO
8 D7 (TXD1) PA9 / USART1_TX / TIM1_CH2

CON4 digital

PIN # Signal Name STM32F103RB Functions
1 D8 (RXD1) PA10 / USART1_RX / TIM1_CH3
2 D9 PB7 / I2C1_SDA / TIM4_CH2 / USART1_RX
3 D10 (#SS1) PA4 / SPI1_NSS / USART2_CK / ADC12_IN4
4 D11 (MOSI1) PA7 / SPI1_MOSI / ADC12_IN7 / TIM3_CH2 / TIM1_CH1N
5 D12 (MISO1) PA6 / SPI1_MISO / ADC12_IN6 / TIM3_CH1 / TIM1_BKIN
6 D13 (SCK1 / LED1) PA5 / SPI1_SCK / ADC12_IN5
7 GND N/A
8 D14 (CANRX) PB8 / TIM4_CH3 / I2C1_SCL / CANRX

System Clock

OLIMEXINO-STM32 has two external oscillators. The frequency of the slow clock is 32.768 kHz. The frequency of the main clock is 8 MHz. The processor can setup HSE to drive the master clock, which can be set as high as 72 MHz.

Serial Port

OLIMEXINO-STM32 board has up to 3 U(S)ARTs. The Zephyr console output is assigned to USART1. Default settings are 115200 8N1.

SPI

OLIMEXINO-STM32 board has up to 2 SPIs. The default SPI mapping for Zephyr is:

  • SPI1_NSS : PA4
  • SPI1_SCK : PA5
  • SPI1_MISO : PA6
  • SPI1_MOSI : PA7

I2C

OLIMEXINO-STM32 board has up to 1 I2C. The default I2C mapping for Zephyr is:

  • I2C2_SCL : PB10
  • I2C2_SDA : PB11

USB

OLIMEXINO-STM32 board has a USB 2.0 full-speed device interface available through its mini USB connector.

  • USB_DM : PA11
  • USB_DP : PA12

Jumpers

The Zephyr kernel uses the OLIMEXINO-STM32 default jumper settings. Note that all jumpers on the board are SMD type. You will need to solder, unsolder, or cut them in order to reconfigure them.

The default jumper settings for the OLIMEXIMO-STM32E are:

Jumper Name Open Close
LED1_E   x
LED2_E   x
D23_E x  
R-T x  
P10_E   x
Jumper Name D10 D4
D10/D4   x

Flashing Zephyr onto OLIMEXINO-STM32

Flashing the Zephyr kernel onto OLIMEXINO-STM32 requires the stm32flash tool.

Building stm32flash command line tool

To build the stm32flash tool, follow the steps below:

  1. Checkout the stm32flash tool’s code from the repository.
$ git clone http://git.code.sf.net/p/stm32flash/code stm32flash
$ cd stm32flash
  1. Build the stm32flash tool.
$ make
  1. The resulting binary is available at stm32flash.

Flashing an Application to OLIMEXINO-STM32

To upload an application to the OLIMEXINO-STM32 board a TTL(3.3V) serial adapter is required. This tutorial uses the Button demo sample application.

  1. To build the Zephyr kernel and application, enter:

    # On Linux/macOS
cd $ZEPHYR_BASE/samples/basic/button
mkdir build && cd build

# On Windows
cd %ZEPHYR_BASE%\samples\basic\button
mkdir build & cd build


# Use cmake to configure a Ninja-based build system:
cmake -GNinja -DBOARD=olimexino_stm32 ..

# Now run ninja on the generated build system:
ninja

  2. Connect the serial cable to the UEXT lines of the UART interface (pin #3=TX and pin #4=RX).

  3. Power the OLIMEXINO-STM32 via the mini USB.

  4. Reset the board while holding the button (BUT).

  5. Flash the application using the stm32flash tool. Start by navigating to the build directory containing zephyr.bin.

    $ stm32flash -w zephyr.bin -v -g 0x0 <tty_device>

    Replace <tty_device> with the port where the board OLIMEXINO-STM32 can be found. For example, under Linux, /dev/ttyUSB0.

  6. Run your favorite terminal program to listen for output.

    $ minicom -D /dev/ttyUSB0 -b 115200

    The -b option sets baud rate ignoring the value from config.

  7. Press the Reset button and you should see the output of button application in your terminal. The state of the BUT button’s GPIO line is monitored and printed to the serial console. When the input button gets pressed, the interrupt handler prints information about this event along with its timestamp.

Note

Make sure your terminal program is closed before flashing the binary image, or it will interfere with the flashing process.