STM32L0538-DISCO

Caution

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Tip

When using this board with RIOT, set the BOARD variable to stm32l0538-disco in your Makefile. If you follow the standard RIOT project structure, your Makefile should look like this:

./Makefile

# name of your application
APPLICATION = hello-world

# Change this to your board if you want to build for a different board
BOARD ?= stm32l0538-disco

# This has to be the absolute path to the RIOT base directory:
RIOTBASE ?= $(CURDIR)/RIOT

include $(RIOTBASE)/Makefile.include

Support for the STM32L0538-DISCO board

Introduction

The STM32L0538-DISCO discovery kit features an ultra low-power stm32l053c8t6 microcontroller with 64KB of FLASH and 8KB of RAM. The board also provides an on-board 2.04” E-paper display (not supported yet).

Pinout

MCU

MCU	STM32L053C8
Family	ARM Cortex-M0+
Vendor	ST Microelectronics
RAM	8KiB
Flash	64KiB
Frequency	up to 32 MHz
Timers	9 (2x watchdog, 1 SysTick, 5x 16-bit, 1x RTC)
ADCs	1x 12 bit (up to 16 channels)
UARTs	3 (two USARTs and one Low-Power UART)
I2Cs	2
SPIs	4
RTC	1
Datasheet	Datasheet
Reference Manual	Reference Manual
Programming Manual	Programming Manual
Board Manual	Board Manual

Supported features

Peripheral	Configuration
TIMs	TIM2
UARTs	USART1 on PA10 (RX), PA9 (TX)
SPIs	SPI1 on PB5 (MOSI), PB4 (MISO), PB3 (SCLK); SPI2 on PB15 (MOSI), PB14 (MISO), PB13 (SCLK)

Flashing the device

Flashing the board using OpenOCD

The board can be flashed using OpenOCD via the on-board ST-Link adapter. Then use the following command:

make BOARD=stm32l0538-disco -C examples/basic/hello-world flash

Flashing the Board Using ST-LINK Removable Media

On-board ST-LINK programmer provides via composite USB device removable media. Copying the HEX file causes reprogramming of the board. This task could be performed manually; however, the cpy2remed (copy to removable media) PROGRAMMER script does this automatically. To program board in this manner, use the command:

make BOARD=stm32l0538-disco PROGRAMMER=cpy2remed flash

Note: This PROGRAMMER was tested using ST-LINK firmware 2.37.26. Firmware updates could be found on this STM webpage.

STDIO

STDIO is connected to pins PA9 (TX) and PA10 (RX) so an USB to UART adapter is required. Use the term target to open a terminal:

make BOARD=stm32l0538-disco -C examples/basic/hello-world term

If an external ST-Link adapter is used, RX and TX pins can be directly connected to it. In this case, STDIO is available on /dev/ttyACMx (Linux case).