SensorTile.box
Overview
The STEVAL-MKSBOX1V1 (SensorTile.box) is a ready-to-use box kit for wireless IoT and wearable sensor platforms to help you use and develop apps based on remote motion and environmental sensor data. The SensorTile.box board fits into a small plastic box with a long-life rechargeable battery, and communicates with a standard smartphone through its Bluetooth interface, providing data coming from the sensors.
More information about the board can be found at the SensorTile.box website [1].
Hardware
SensorTile.box provides the following hardware components:
Ultra low-power STM32L4R9ZI System on Chip
LQFP144 package
Core: ARM® 32-bit Cortex®-M4 CPU with FPU, adaptive real-time accelerator (ART Accelerator) allowing 0-wait-state execution from Flash memory, frequency up to 120 MHz, MPU, 150 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions
Clock Sources:
16 MHz crystal oscillator
32 kHz crystal oscillator for RTC (LSE)
Communication
Bluetooth Smart connectivity v4.2 (SPBTLE-1S)
1 x USB OTG FS (SoC) with micro-B connector (USB device role only)
Internal Buses
3 x SPI bus
3 x I2C bus
micro-SD connector
On board sensors:
Digital temperature sensor (STTS751)
6-axis inertial measurement unit (LSM6DSOX)
3-axis accelerometers (LIS2DW12 and LIS3DHH)
3-axis magnetometer (LIS2MDL)
Altimeter / pressure sensor (LPS22HH)
Microphone / audio sensor (MP23ABS1)
Humidity sensor (HTS221)
HCP602535ZC LI-ion rechargeable battery (3.7V 500mAh)
FTSH107 connector for SWD debugging and UART Tx/Rx
Supported Features
The SensorTile.box provides motion, environmental, and audio sensor data through either the BLE or USB protocols to a host application running on a smartphone/PC to implement applications such as:
Pedometer optimized for belt positioning
Baby crying detection with Cloud AI learning
Barometer / environmental monitoring
Vehicle / goods tracking
Vibration monitoring
Compass and inclinometer
Sensor data logger
The sensortile_box board supports the hardware features listed below.
- on-chip / on-board
- Feature integrated in the SoC / present on the board.
- 2 / 2
-
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files. -
vnd,foo -
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
ARM Cortex-M4F CPU1 |
|
ADC |
on-chip |
STM32 ADC2 |
|
Bluetooth |
on-board |
STMicroelectronics SPI protocol V2 compatible with BlueNRG-1 and successor devices1 |
|
CAN |
on-chip |
STM32 CAN controller1 |
|
Clock control |
on-chip |
STM32 RCC (Reset and Clock controller)1 |
|
on-chip |
STM32 HSE Clock1 |
||
on-chip |
|||
on-chip |
STM32 MSI Clock1 |
||
on-chip |
STM32 LSE Clock1 |
||
on-chip |
STM32L4/L5 main PLL1 |
||
on-chip |
STM32 Microcontroller Clock Output (MCO)1 |
||
Counter |
on-chip |
STM32 counters9 |
|
DAC |
on-chip |
STM32 family DAC1 |
|
Display |
on-chip |
STM32 LCD-TFT display controller1 |
|
DMA |
on-chip |
STM32 DMA controller (V2)2 |
|
on-chip |
STM32 DMAMUX controller1 |
||
Flash controller |
on-chip |
STM32 Family flash controller1 |
|
GPIO & Headers |
on-chip |
STM32 GPIO Controller9 |
|
I2C |
on-chip |
||
Input |
on-board |
Group of GPIO-bound input keys1 |
|
Interrupt controller |
on-chip |
ARMv7-M NVIC (Nested Vectored Interrupt Controller)1 |
|
on-chip |
STM32 External Interrupt Controller1 |
||
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
Memory controller |
on-chip |
STM32 Battery Backed RAM1 |
|
MMC |
on-chip |
STM32 SDMMC Disk Access1 |
|
MTD |
on-chip |
STM32 flash memory1 |
|
on-board |
Fixed partitions of a flash (or other non-volatile storage) memory1 |
||
OCTOSPI |
on-chip |
STM32 OSPI Controller2 |
|
PHY |
on-chip |
This binding is to be used by all the usb transceivers which are built-in with USB IP1 |
|
Pin control |
on-chip |
STM32 Pin controller1 |
|
Power management |
on-chip |
STM32 power controller1 |
|
PWM |
on-chip |
STM32 PWM10 |
|
Reset controller |
on-chip |
STM32 Reset and Clock Control (RCC) Controller1 |
|
RNG |
on-chip |
STM32 Random Number Generator1 |
|
RTC |
on-chip |
STM32 RTC1 |
|
Sensors |
on-board |
STMicroelectronics HTS221 humidity and temperature sensor on I2C bus1 |
|
on-board |
STMicroelectronics LPS22HH pressure and temperature sensor connected to I2C bus1 |
||
on-board |
STMicroelectronics STTS751 temperature sensor connected to I2C bus1 |
||
on-board |
STMicroelectronics LIS2DW12 3-axis accelerometer accessed through SPI bus1 |
||
on-board |
STMicroelectronics LSM6DSO 6-axis IMU (Inertial Measurement Unit) sensor accessed through SPI bus1 |
||
on-board |
STMicroelectronics IIS3DHHC 3-axis accelerometer accessed through SPI bus1 |
||
on-board |
STMicroelectronics LIS2MDL magnetometer accessed through I2C bus1 |
||
on-chip |
STM32 family TEMP node for production calibrated sensors with two calibration temperatures1 |
||
on-chip |
STM32 VREF+1 |
||
on-chip |
STM32 VBAT1 |
||
Serial controller |
on-chip |
||
on-chip |
STM32 LPUART1 |
||
on-chip |
STM32 UART2 |
||
SMbus |
on-chip |
STM32 SMBus controller4 |
|
SPI |
on-chip |
STM32 SPI controller with embedded Rx and Tx FIFOs3 |
|
SRAM |
on-chip |
Generic on-chip SRAM1 |
|
Timer |
on-chip |
ARMv7-M System Tick1 |
|
on-chip |
STM32 timers11 |
||
on-chip |
STM32 low-power timer (LPTIM)2 |
||
USB |
on-chip |
STM32 OTGFS controller1 |
|
Watchdog |
on-chip |
STM32 watchdog1 |
|
on-chip |
STM32 system window watchdog1 |
Connections and IOs
LED
Blue LED = PB15
Green LED = PF2
System Clock
SensorTile.box System Clock could be driven by internal or external oscillator, as well as main PLL clock. By default, the System clock is driven by the PLL clock at 80MHz, driven by the 16MHz external oscillator. The system clock can be boosted to 120MHz. The internal AHB/APB1/APB2 AMBA buses are all clocked at 80MHz.
Serial Port
There are two possible options for Zephyr console output:
using USART1 which is available on FTSH107 connector. In this case a JTAG adapter can be used to connect SensorTile.box to STLINK-V2 and have both SWD and console lines available on PC.
using the USB connector, which may be used to make the console available on PC as USB CDC class.
Console default settings are 115200 8N1.
USB interface
SensorTile.box can be connected as a USB device to a PC host through its micro-B connector. The final application may use it to declare SensorTile.box device as belonging to a certain standard or vendor class, e.g. a CDC, a mass storage or a composite device with both functions.
Programming and Debugging
The sensortile_box board supports the runners and associated west commands listed below.
| flash | debug | |
|---|---|---|
| dfu-util | ✅ (default) |
There are 2 main entry points for flashing STM32FL4Rx SoCs, one using the ROM bootloader, and another by using the SWD debug port (which requires additional hardware) on FTSH107 connector. Flash using the ROM bootloader by powering on the board while keeping the BOOT0 button pressed. The ROM bootloader supports flashing via USB (DFU), UART, I2C and SPI. You can read more about how to enable and use the ROM bootloader by checking the application note AN2606 [2] (STM32L4Rx section).
Flashing
Installing dfu-util
It is recommended to use at least v0.8 of dfu-util. The package available in Debian and Ubuntu can be quite old, so you might have to build dfu-util from source. Information about how to get the source code and how to build it can be found at the DFU-UTIL website [3]
Flashing an Application to SensorTile.box
While pressing the BOOT0 button, connect the micro-USB cable to the USB OTG SensorTile.box port and to your computer. The board should be forced to enter DFU mode.
Confirm that the board is in DFU mode:
$ sudo dfu-util -l
dfu-util 0.9
Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2019 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/
Found DFU: [0483:df11] ver=2200, devnum=74, cfg=1, intf=0, path="2-2", alt=2, name="@OTP Memory /0x1FFF7000/01*0001Ke", serial="204A325D574D"
Found DFU: [0483:df11] ver=2200, devnum=74, cfg=1, intf=0, path="2-2", alt=1, name="@Option Bytes /0x1FF00000/01*040 e/0x1FF01000/01*040 e", serial="204A325D574D"
Found DFU: [0483:df11] ver=2200, devnum=74, cfg=1, intf=0, path="2-2", alt=0, name="@Internal Flash /0x08000000/512*0004Kg", serial="204A325D574D"
You should see following confirmation on your Linux host:
$ dmesg
usb 2-2: new full-speed USB device number 74 using xhci_hcd
usb 2-2: New USB device found, idVendor=0483, idProduct=df11
usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 2-2: Product: STM32 BOOTLOADER
usb 2-2: Manufacturer: STMicroelectronics
usb 2-2: SerialNumber: 204A325D574D
You can build and flash the provided sample application (SensorTile.box sensors) that reads sensors data and outputs values on the console.