DISCO-L475VG-IOT01A

STM32L4 Discovery kit IoT node, low-power wireless, BLE, NFC, SubGHz, Wi-Fi

Overview

The B-L475E-IOT01A Discovery kit for IoT node allows users to develop applications with direct connection to cloud servers. The Discovery kit enables a wide diversity of applications by exploiting low-power communication, multiway sensing and ARM® Cortex® -M4 core-based STM32L4 Series features. The support for Arduino Uno V3 and PMOD connectivity provides unlimited expansion capabilities with a large choice of specialized add-on boards.


Microcontroller features

  • STM32L475VGT6 in LQFP100 package
  • ARM®32-bit Cortex®-M4 CPU with FPU
  • Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait state execution from Flash memory
  • 80 MHz max CPU frequency
  • VDD from 1.71 V to 3.6 V
  • 1 MB Flash
  • 128 KB SRAM
  • True random generator (TRNG for HW entropy)
  • Quad SPI memory interface (1)
  • Timers General Purpose (7)
  • Timers Advanced-Control (2)
  • Timers Basic (2)
  • Timers LowPower (2)
  • Systick
  • Watchdog (2)
  • SPI (3)
  • I2C (3)
  • USART (6)
  • USB OTG Full Speed
  • CAN (1)
  • SAI (2)
  • SDMMC
  • SWPMI
  • GPIO (82) with external interrupt capability
  • 12-bit ADC (3) with 16 channels
  • 12-bit DAC with 2 channels
  • Ultra LP comparator (2)
  • Opamp (2)


Board features

  • 64-Mbit Quad-SPI (Macronix) Flash memory
  • Bluetooth® V4.1 module (SPBTLE-RF)
  • Sub-GHz (868 or 915 MHz) low-power-programmable RF module (SPSGRF-868 or SPSGRF-915)
  • Wi-Fi® module Inventek ISM43362-M3G-L44 (802.11 b/g/n compliant)
  • Dynamic NFC tag based on M24SR with its printed NFC antenna
  • 2 digital omnidirectional microphones (MP34DT01)
  • Capacitive digital sensor for relative humidity and temperature (HTS221)
  • High-performance 3-axis magnetometer (LIS3MDL)
  • 3D accelerometer and 3D gyroscope (LSM6DSL)
  • 260-1260 hPa absolute digital output barometer (LPS22HB)
  • Time-of-Flight and gesture-detection sensor (VL53L0X)
  • 2 push-buttons (user and reset)
  • USB OTG FS with Micro-AB connector
  • Expansion connectors:
    • Arduino™ Uno V3
    • PMOD
  • Flexible power-supply options: ST LINK USB VBUS or external sources
  • On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration capability: mass storage, virtual COM port and debug port


Board pinout


Pins Legend

/media/uploads/bcostm/pinout_legend_2017-06-28-2.png

You can find more details on the available pins and labels in the PeripheralPins.c and PinNames.h files.

These files can be found in:

  • ARMmbed/mbed-os repository on GitHub (up-to-date version, used with mbed CLI commands)

https://github.com/ARMmbed/mbed-os/blob/master/targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L475xG/TARGET_DISCO_L475VG_IOT01A/


Arduino-compatible headers

/media/uploads/bcostm/disco_l475vg_iot01a_2018-03-28_ard_left.png /media/uploads/bcostm/disco_l475vg_iot01a_2018-03-28_ard_right.png

Other

/media/uploads/bcostm/disco_l475vg_iot01a_2018-03-28_misc.png


Supported shields

ST X-NUCLEO boards

See Matrix of tested boards.

Other Non-ST boards

See here.


Technical references

Wifi FW update

https://os.mbed.com/teams/ST/wiki/How-to-make-wifi-tests#wifi-firmware-update

Known limitations

The following section describes known limitations of the platform. Note that general issues are tracked into the mbed repository available on GitHub.

  • On board revision D are supported

Tips and Tricks

Find more information in ST WIKI pages.

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