Lobaro Lorabox

Caution

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Tip

When using this board with RIOT, set the BOARD variable to lobaro-lorabox 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 ?= lobaro-lorabox

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

include $(RIOTBASE)/Makefile.include

Support for the Lobaro LoraBox with stm32l151cb-a

Hardware

MCU

MCU	stm32l151cb-a
Family	ARM Cortex-M3
Vendor	ST Microelectronics
RAM	16KiB
Flash	128KiB
Frequency	32MHz (no external oscillator connected)
FPU	no
Timers	10 (8x 16-bit, 2x watchdog timers)
ADCs	1x 24-channel 12-bit
UARTs	3
SPIs	2
I2Cs	2
Vcc	1.65V - 3.6V
Datasheet	Datasheet
Reference Manual	Reference Manual
Programming Manual	Programming Manual
Board Manual	Board Manual

User Interface

1 LEDs:

NAME	LED0
Color	green
Pin	P1

Flashing

Connections

To flash using the STM32 ROM bootloader on the board, use the provided UART-USB bridge and connect it to the Config port. The Config port pinout is the following:

---------------     ---------------
| 1 2 3 4 5 6 |     | x x x x x x |
---------------     ---------------
    Config               Addon

1: RST
2: VCC
3: RX1
4: TX1
5: Boot0
6: GND

STM32 Loader

To flash RIOT on the board, after connection the UART-USB bridge, just run:

BOARD=lobaro-lorabox make flash

This uses the stm32loader script to erase the memory and flash it interfacing with the STM32 ROM bootloader.

Lobaro Tool

Another way of interfacing with the STM32 ROM bootloader is using the Lobaro Maintenance Tool provided online for free for Linux, Mac & Windows. It allows flashing and accessing the UART.

Connecting via Serial

The default UART port is the USART1, the same that is used for flashing, so it is available on the Config port. The default port is /dev/ttyUSB0. To access the port run:

BOARD=lobaro-lorabox make term

Note: If you want to access the port with a different application please keep in mind that RTS must be set to ‘0’ and DTR to ‘1’ as the provided UART-USB bridge seems to invert this lines.

SX1272 radio

Please note that the board has a Semtech SX1272 radio. This means that when the semtech-loramac package or the sx127x driver are used the correct driver version (sx1272) must be selected.