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LimiFrog Version 1

Support for the limifrog-v1 board. More...

Detailed Description

Support for the limifrog-v1 board.


LimiFrog-v1 arose from the La BlueFrog board. LimiFrog-v1 contains the first hardware revision of that kickstarter project. LimiFrog-v2 is already there and the RIOT support will follow. LimiFrog features a variety of sensors as well as an OLED Display and a BLE (Bluetooth Low-Energy) module.


Limifrog-v1 limifrog-v1 pinout


Family ARM Cortex-M3
Vendor ST Microelectronics
Flash 256KiB
Frequency 32MHz (no external oscillator connected)
FPU no
Timers 8 (8x 16-bit, 1x 32-bit [TIM5])
ADCs 1x 42-channel 12-bit
SPIs 2
I2Cs 2
Vcc 1.65V - 3.6V
Datasheet Datasheet
Reference Manual Reference Manual
Programming Manual Programming Manual

User Interface

2 Buttons:

PA15 (IN)
PC8 (IN)

1 LED:

Color red
Pin PC3

Implementation Status

Device ID Supported Comments
MCU STM32L151RC partly Energy saving modes not fully utilized
Low-level driver GPIO yes
PWM yes
UART yes
I2C yes
SPI yes
Timer yes
Ambient Light Sensor ST VL6180X no planned
Accelerometer ST LSM6DS3 no planned
Magnetometer ST LIS3MDL no planned
Gyroscope ST LSM6DS3 no planned
atmospheric pressure (and altitude) sensor ST SLPS25H no planned
Microphone Knowles SPU0414HR5H-SB no planned
OLED Display Densitron DD-160128FC-1A no planned
BLE Panasonic PAN1740 no planned

Flashing and Debugging the device

The LimiFrog-v1 has no on-board programmer nor an USB-UART converter. It can be programmed by using the integrated ST-Link/V2 programmer of any STM32Fx- discovery board. See the Hardware subsection in Flashing and Debugging section here for an example. Another way is to use a stand-alone ST-Link V2 programmer as shown in the picture.

limifrog-v1 wiring limifrog-v1

To debug the device you may also want to use a stand-alone UART converter and connect it to the pins PC10 and PC11 and keep the programmer plugged.


file  board.h
 Board specific definitions for the limifrog-v1 board.
file  periph_conf.h
 Peripheral MCU configuration for the limifrog-v1 board.