OLIMEX-STM32-H103

Overview

The OLIMEX-STM32-H103 is a simple development board based on the STMicroelectronics STM32F103RBT6 ARM Cortex-M3 CPU, with all the MCU pins populated and accessible through two male 26-pin connectors.

OLIMEX-STM32-H103 top
OLIMEX-STM32-H103 bottom

OLIMEX-STM32-H103

Hardware

Information about the board can be found at the OLIMEX-STM32-H103 website and OLIMEX-STM32-H103 user manual. The OLIMEX-STM32-H103 schematic is also available.

The ST STM32F103RB Datasheet contains the processor’s information and the datasheet.

Supported Features

The OLIMEX STM32-H103 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

PWM

on-chip

pwm

SPI

on-chip

spi

USB

on-chip

USB device

ADC

on-chip

adc

Other hardware features have not been enabled yet for this board.

Connections and IOs

System Clock

The on-board 8 MHz crystal is used to produce a 72 MHz system clock with PLL.

Zephyr Console

UART2 is used as Zephyr’s console. Default settings are 115200 8N1.

On-Board LEDs

The board has one on-board green LED that is connected to PC12, which is active low.

There is also a red power LED neither connected nor controlled by the MCU.

On-Board Button

The board has one user button connected to PA0.

USB

USB is not enabled by default.

PC4 can be configured as a GPIO input to detect power on the USB port. It is possible to disconnect it by desoldering the appropriate pad in the PCB.

PC11 can be used to disconnect the pull-up resistor on the USB-DP line by setting it high.

External Connectors

JTAG/SWD debug

PIN #

Signal Name

PIN #

Signal Name

1

TVCC +3.3V

2

TVCC 3.3V

3

PB4 / TRST

4

GND

5

PA15 / TDI

6

GND

7

PA13 / TMS / SWDIO

8

GND

9

PA14 / TCK / SWCLK

10

GND

11

NC

12

GND

13

PB3 / TDO

14

GND

15

RST

16

GND

17

NC

18

GND

19

NC

20

GND

EXTENSION 1

PIN #

Name / STM32F103 Port

PIN #

Name / STM32F103 Port

1

PA11 / USB_DM

2

PA8

3

PA12 / USB_DP

4

PA9

5

+3.3V

6

GND

7

PA10

8

PC10

9

PC11 / USB_DISC

10

PC12 / LED

11

PD2

12

PB5

13

PB6

14

PA6

15

PB7

16

PB8

17

PB9

18

PA5

19

PC0

20

PC1

21

PB0

22

PA7

23

VBAT

24

PC13

25

RST

26

PB1

EXTENSION 2

PIN #

Name / STM32F103 Port

PIN #

Name / STM32F103 Port

1

VDDA

2

PC2

3

GNDA

4

PA0 / BUTTON

5

+3.3V

6

GND

7

PA2 / USART2_TX

8

PA1

9

PC3

10

PA3 / USART2_RX

11

PA4

12

PC4 / USB_POWER

13

PC5

14

PB10

15

P11

16

PB13

17

PB12

18

PB14

19

PB15

20

PC6

21

PC7

22

PC8

23

+5V USB

24

PC9

25

GND

26

VIN

Programming and Debugging

This board does not include any embedded debug tool interface, instead you will have to use an external probe connected to the available 20-pin JTAG connector to program and debug the board. Both JTAG and SWD are supported.

By default when using west debug ST-Link will be used with OpenOCD’s SWD transport, but it is also possible to use JTAG with the Olimex ARM-USB-OCD-H probe, for instance. For the latter, you should replace the file openocd.cfg by openocd_olimex_jtag.cfg, located in the board’s support directory.

The blackmagicprobe can also be used to program the device.

Flashing

Here is an example for the Button application.

# From the root of the zephyr repository
west build -b olimex_stm32_h103 samples/basic/button
west flash

Debugging

You can debug an application in the usual way. Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b olimex_stm32_h103 samples/hello_world
west debug

References