u-blox XPLR-HPG-1, Руководство пользователя

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XPLR-HPG-1 - User guide
UBX-23000692 - R01 Hardware description Page 16 of 37
C1-Public
2.1.2.3 Battery protection
The evaluation board includes an on-board circuit that protects against overcurrent, over voltage and
under voltage. SW1 (battery connect/disconnect switch) switches the battery connection circuit
connects and disconnects the battery from the board circuit.
Figure 11 shows SW1 “battery connect”
and “battery disconnect” positions.
When in “ battery disconnect ” position, power for the system is only drawn from one of the two USB-C
connectors. In this configuration the battery is not charged.
In the “ battery connect ” position, power for the system is drawn from the USB-C. If more power is
needed than what USB-C can provide, then battery is used to supply the excessive power. If there is
excessive power on the USB-C, it is used to charge the battery.
Figure 11: SW1 (battery connect switch) positions
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Every time the battery is physically removed from the holder, the battery protection circuit
changes to disconnect state (for battery saving reasons). To change to normal state again, a
connection with an external charger should be done.
2.1.3 NORA-W106
NORA-W106 can be programmed with the main application code. Table 1 describes the connections
of NORA-W106 to different functions.
NORA-W106 pin ESP32-S3 GPIO Function
F7 GPIO0 / Boot BOOT0/BUTTON-1
C8 GPIO21 BUTTON-2
A3 GPIO17 (A) I2C-SCL
B4 GPIO18 (A) I2C-SDA
H9 GPIO8 (A) LED-B
H8 GPIO2 (A) LED-G
J8 GPIO5 (A) LED-R
E8 GPIO1 (A) MB1-AN
D8 GPIO4 (A) MB1-INT
E9 GPIO7 (A) MB1-PWM
E7 GPIO9 (A) MB1-RST