background image

In the STEVAL-GPT001V1 cradle board current limitation is set at 50 mA by R5 = 20 kΩ.
The red LED (CHRG), mounted between 5 V supply rail and STBC08PMR CHGR pin, remains activated until full
battery charge is achieved.
The STBC08PMR BAT output pin is connected to the battery through the 

SPV1050TTR

 STORE pin and the pass

transistor Q1.(As aforementioned this architecture allows full battery protection by avoiding over-voltage and
under-voltage events.)

1.4.4

Humidity and temperature sensor

The 

HTS221

 is an ultra-compact sensor for relative humidity and temperature measurement.

It includes a sensing element (manufactured using a proprietary ST process) and a mixed signal ASIC to provide
measurement data through digital serial interfaces.
The sensing element consists of a polymer dielectric planar capacitor structure capable of detecting relative
humidity variations and temperature.
The HTS221 is fully monitored by the firmware running on the SensorTile module; thus, the sensed values are
displayed by the app dedicated tab(For further details about HTS221, refer to the related datasheet freely
downloadable from www. st.com.).

1.4.5

STEVAL-GPT001V1 programming interface

When the SensorTile module is supplied (see 

Section 1.4.3.1 Connection

Section 1.4.2 SensorTile module

connection

 and 

Section 1.4.1 Startup

) and connected to the 

STEVAL-GPT001V1

 cradle board or to the

STLCX01V1 SensorTile Cradle expansion board, the dedicated firmware STSW-GPT001V1 can be uploaded
through the SWD cable and an ST-Link programmer.
The easiest way is using an STM32 Nucleo board which bundles an ST-LINK V2.1 debugger and programmer.

Step 1.

Ensure CN2 jumpers are OFF.

Step 2.

Connect your STM32 Nucleo board to the cradle, paying attention to the position of pin 1 on both SWD
connectors.
The STEVAL-GPT001V1 SWD connector is directly accessible from the cover back without opening
the case.

Figure 15. 

STEVAL-GPT001V1 cradle board and STM32 Nucleo connection via SWD connectors

Step 3.

Connect the ST-LINK V2.1 to a USB port of a PC/laptop where the STM32 ST-LINK Utility is installed.

Step 4.

Launch the STM32 ST-LINK Utility and virtually connect it to the ST-LINK V2.1 ([

Target

]>[

Connect

]).

From [

File

]>[

Open

] you can browse your folder and select the file 

STSW-GPT001V1.bin

.

Step 5.

Upload the firmware 

STSW-GPT001V1.bin

 ([

Target

]>[

Program & Verify

]>[

Start address:

0x08004000

]).

Step 6.

Virtually disconnect the ST-Link V2.1 [

Target Disconnect

].

Step 7.

Disconnect the SWD cable from the cradle.
The uploaded firmware starts running automatically.

UM2260

 

UM2260

 - 

Rev 2

page 13/25

Summary of Contents for SensorTile STEVAL-GPT001V1

Page 1: ...timizes the energy harvested from the PV panels thanks to the embedded MPPT algorithm and recharges the battery while guaranteeing over voltage and under voltage protection the harvested energy allows...

Page 2: ...V1 dedicated SensorTile firmware package supporting different algorithms tailored to the on board sensors and computation of system autonomy and charge stored in the battery FP SNS ALLMEMS1 STM32 ODE...

Page 3: ...o the STEVAL GPT001V1 cradle board 1 1 1 4 SWD cable The five way SWD cable easily allows the STEVAL GPT001V1 cradle board to be connected to a programmer debugger system such as ST LINK V2 1 refer to...

Page 4: ...ets To start transmitting data the SensorTile module has to be virtually connected to the app by the scan procedure described below Step 1 Launch the STBLESensor app Step 2 Click on the Start Scanning...

Page 5: ...tep 4 After having selected one among the available devices the app will automatically move to the Environmental tab showing the ambient temperature C pressure mBar and humidity values UM2260 STBLESen...

Page 6: ...ystem is powered by solar modules Charging level Status Discharging Charging Voltage V Current mA net current charging current minus load current Estimated system autonomy minutes according to the cha...

Page 7: ...show the increase of system autonomy in minutes thanks to the lighting energy from 6500 K fluorescent lamp 250 to 5 k Lux and solar from 0 06 and 1 W m2 light conditions Figure 7 System autonomy vs i...

Page 8: ...one minute of inactivity of the SensorTile module accelerometer The system automatically restarts working normally when the accelerometer detects a movement In the Rssi and Battery information tab it...

Page 9: ...is described in Section 1 4 3 3 Recharge through PV modules Another option to start the system up is plugging a 5 V source e g USB port to the micro USB connector the battery electrical connection an...

Page 10: ...AL STLCS01V1 SensorTile module The SensorTile module is not included in the STEVAL GPT001V1 kit but can be purchased separately and easily plugged to the STEVAL GPT001V1 cradle board via CN2 connector...

Page 11: ...rge through PV modules The SPV1050 controls the PV panel harvesting and conditioning of the extracted power to recharge the battery It integrates a high efficiency boost architecture which combined wi...

Page 12: ...d to a 5 V supply source e g a USB port to activate a fast battery recharge controlled by the STBC08PMR For details on the device refer to the related datasheet at www st com The ESD protection is fea...

Page 13: ...ce When the SensorTile module is supplied see Section 1 4 3 1 Connection Section 1 4 2 SensorTile module connection and Section 1 4 1 Startup and connected to the STEVAL GPT001V1 cradle board or to th...

Page 14: ...A R8 1K C1 100 nF R3 2K U1USBLC6 2P6 D1 1 GND 2 D2 3 VBUS 5 D3 4 D4 6 R4 DNM U4STC3115IQT CG 6 GND 5 NC 4 SCL 3 SDA 2 ALM 1 BATD CD 8 VCC 9 RSTIO 7 VIN 10 BATT 1 2 3 C8 100 nF SensorTile 1 2 3 4 5 6 7...

Page 15: ...19 19 20 20 21 21 SW2 1 2 3 R30 330k Ohm C15 100nF 1 2 C12 10 nF 1 2 R17 4 02M PV 1 1 R31 8 2M U7A 4 1 6 2 3 5 C11 4 7 F 1 2 Q2 STL10N3LLH5 5 4 2 6 7 8 3 1 9 R120 Ohm Q1 C14 100 nF 1 2 1 1 R15 6 8M R...

Page 16: ...11 3 R10 R12 R22 0 63 mW 0402 Resistors Vishay CRCW04020000Z0ED 12 1 R9 50 m 1 16 W 0402 Resistor Panasonic ERJ 2BWFR050X 14 1 SWD Pitch 2 54 mm Circuit jumper plug Omron XJ8B 0511 15 1 SensorTile Sen...

Page 17: ...omp MC00625W040215M60 29 1 R15 6 8M 63mW 0402 Resistor Multicomp MC00625W040216M80 30 1 R16 3 0M 63mW 0402 Resistor Multicomp MC00625W040213M00 31 1 R17 4 22M 63mW 0402 Resistor Vishay CRCW04024M22FKE...

Page 18: ...11IQ1T 43 1 SW2 2 way JMP 0402 3 Jumper Any 44 1 Battery 3 7 V 100 mAh LiPO 501225 3pin connector Himax electronics LiPO 501225 45 1 SWD Cable 2 54 mm L 15cm SWD cable Any 46 1 Bracelet Bracelet Skorp...

Page 19: ...4 Board layout Figure 18 STEVAL GPT001V1 top layer Figure 19 STEVAL GPT001V1 bottom layer UM2260 Board layout UM2260 Rev 2 page 19 25...

Page 20: ...Figure 20 STEVAL GPT001V1 component placement top and bottom layers UM2260 Board layout UM2260 Rev 2 page 20 25...

Page 21: ...n history Table 2 Document revision history Date Version Changes 25 Sep 2017 1 Initial release 09 Nov 2018 2 Updated Figure 1 STEVAL GPT001V1 development kit Minor text changes UM2260 UM2260 Rev 2 pag...

Page 22: ...ation and transmission 4 1 3 2 Rssi and Battery information tab 6 1 4 System setup 9 1 4 1 Startup 9 1 4 2 SensorTile module connection 9 1 4 3 Battery 10 1 4 4 Humidity and temperature sensor 13 1 4...

Page 23: ...List of tables Table 1 STEVAL GPT001V1 bill of materials 16 Table 2 Document revision history 21 UM2260 List of tables UM2260 Rev 2 page 23 25...

Page 24: ...e module connected to the STEVAL GPT001V1 cradle board 10 Figure 12 STEVAL GPT001V1 watch shape silicon strap external back view and battery connection internal view 11 Figure 13 STEVAL GPT001V1 cradl...

Page 25: ...the choice selection and use of ST products and ST assumes no liability for application assistance or the design of Purchasers products No license express or implied to any intellectual property righ...

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