System Setup; Startup; Sensortile Module Connection; Figure 9. Stblesensor App - Rssi And Battery Information Tab After Sleep Mode - STMicroelectronics SensorTile STEVAL-GPT001V1 User Manual

1.4

System setup

1.4.1

Startup

To start the system up, the SensorTile module and the battery must be plugged into the cradle board; the battery
has to be supplied by the PV panels or by a 5 V source otherwise it remains electrically isolated.
The STEVAL-GPT001V1
voltage on the
R15 and R16) and the Q1 pass transistor is consequently activated (see
The PV panels supply the system when irradiated by a light source: the battery electrical connection and the
related recharge are fully managed by the SPV1050TTR (the energy harvesting system is described in
Section 1.4.3.3 Recharge through PV
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 and Q1 activation are managed by SPV1050TTR while the charging profile is
managed by the
Section 1.4.3.4 Recharge via micro-USB
The SensorTile module is supplied by the 3.3 V LDO integrated in the SPV1050TTR: to enable the LDO, slide the
SW1 to ON position.
Note: Regardless of the SW1 status, the 3.3 V LDO is forced off by the SPV1050TTR until Q1 is OFF.
If the quadrant back case is open, you can check if the
red LED placed in the bottom right corner (blinking = power on).
If the back case is closed, you can check if the SensorTile module is working by launching the scan procedure on
the dedicated app (see
UM2260 - Rev 2
Figure 9. STBLESensor app - Rssi and Battery information tab after sleep mode
cradle board power management architecture electrically connects the battery when the
SPV1050TTR STORE pin triggers the 4.1 V EOC threshold (set by the resistor partitioning R14,
modules).
STBC08PMR (with a charge current limited to 50 mA by R5 = 20 kΩ) (see
connector).
Section 1.3.1 SensorTile module activation and
Section 1.4.3.2
STEVAL-STLCS01V1 module is powered on through the
transmission).
UM2260
Protection).
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