OLIMEX-STM32-P405

Overview

The OLIMEX-STM32-P405 board is based on the STMicroelectronics STM32F405RG ARM Cortex-M4 CPU.

OLIMEX-STM32-P405

OLIMEX-STM32-P405

Hardware

Information about the board can be found at the OLIMEX-STM32-P405 website and OLIMEX-STM32-P405 user manual. The ST STM32F405RG Datasheet contains the processor’s information and the datasheet.

Supported Features

The olimex_stm32_p405 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

Other hardware features are not supported by the Zephyr kernel.

Pin Mapping

OLIMEX-STM32-P405 connectors

OLIMEX-STM32-P405 connectors

LED

  • USER_LED (red) = PC12
  • PWR_LED (red) = power

Push buttons

  • USER_BUTTON = PA0
  • RST = NRST

External Connectors

JTAG debug

PIN # Signal Name Pin # Signal Name
1 +3.3V 11
2 +3.3V 12 GND
3 PB4 / TRST 13 PB3 / TDO
4 GND 14 GND
5 PA15 / TDI 15 PB4 / TRST
6 GND 16 GND
7 PA13 / TMS 17
8 GND 18 GND
9 PA14 / TCK 19 +5V_JTAG
10 GND 20 GND

UEXT

PIN # Wire Name STM32F405 port
1 +3.3V
2 GND
3 PA9/USART1_TX PA9
4 PA10/USART1_RX PA10
5 PB6/I2C1_SCL PB6
6 PB7/I2C1_SDA PB7
7 PA6/SPI1_MISO PA6
8 PA7/SPI1_MOSI PA7
9 PA5/SPI1_SCK PA5
10 PA4/SPI1_NSS PA4

GPIO row of pins

Pin STM32F405 Pin Functions
3V3 N/A
PA1 PA1/USART2_RTS/ADC1/TIM2_CH2
PA8 PA8/USART1_CK/TIM1_CH1/MCO
PB0 PB0/ADC8/TIM3_CH3/TIM1_CH2N
PB1 PB1/ADC9/TIM3_CH4/TIM1_CH3N
PB2 PB2/BOOT1
PB5 PB5/I2C1_SMBAI/TIM3_CH2/SPI1_MOSI
PB8 PB8/TIM4_CH3/I2C1_SCL/CANRX
PB9 PB9/TIM4_CH4/I2C1_SDA/CANTX
VDDA N/A
GNDA N/A
PB10 PB10/I2C2_SCL/USART3_TX/TIM2_CH3
PB11 PB11/I2C2_SDA/USART3_RX/TIM2_CH4
PB12 PB12/SPI2_NSS/I2C2_SMBAL/USART3_CK/TIM1_BKIN
PB13 PB13/SPI2_SCK/USART3_CTS/TIM1_CH1N
PB14 PB14/SPI2_MISO/USART3_RTS/TIM1_CH2N
PB15 PB15/SPI2_MOSI/TIM1_CH3N
RST NRST
PC0 PC0/ADC10
PC1 PC1/ADC11
PC2 PC2/ADC12
PC3 PC3/ADC13
PC4 PC4/ADC14
PC5 PC5/ADC15
PC6 PC6/TIM3_CH1
PC7 PC7/TIM3_CH2
PC8 PC8/TIM3_CH3
PC9 PC9/TIM3_CH4
PC10 PC10/USART3_TX
PC12 PC12/USART3_CK
PC13 PC13/ANTI_TAMP
PD2 PD2/TIM3_ETR
+5V_USB N/A
VIN N/A
GND N/A

System Clock

OLIMEX-STM32-P405 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 168 MHz.

Programming and Debugging

The OLIMEX-STM32-P405 board does not include an embedded debug tool interface. You will need to use ST tools or an external JTAG probe. In the following examples a ST-Link V2 USB dongle is used.

Flashing an application to the Olimex-STM32-P405

The sample application Hello World is being used in this tutorial.

Connect the ST-Link USB dongle to your host computer and to the JTAG port of the OLIMEX-STM32-P405 board.

Now build and flash the application.

# From the root of the zephyr repository
west build -b olimex_stm32_p405 samples/hello_world
west flash

Run a serial host program to connect with your board:

$ minicom -D /dev/ttyACM0

After resetting the board, you should see the following message:

***** BOOTING ZEPHYR OS v1.8.99 - BUILD: Aug  4 2017 14:54:40 *****
Hello World! arm

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_p405 samples/hello_world
west debug