Ublox IRIS-W10 Series, User Manual

Page: 17 / 43

EVK-IRIS-W10 - User guide
UBX-23007837 - R03 Hardware description Page 17 of 43
C1-Public
3.3 Buttons
In addition to the RESET and BOOT buttons, EVK-IRIS-W1 has two more momentary push-
button switches. These switches are active-low or high and connect to ground or +3V3 when
pressed. The buttons and the associated GPIO signals are shown in Figure 17 and Table 3 .
Figure 17: EVK schematic - user buttons
Table 3 describes the various user buttons and their relationship with the corresponding GPIO
signals.
Button function Reference designator GPIO Function
SW_1 SW1 GPIO45 No predefined function (software controlled)
SW_2 SW2 GPIO51 No predefined function (software controlled)
BOOT SW7 EXT-GNT
EXT-REQ
Pressing SW7 when R216 or R218 are installed starts the
bootloader in ISP or Serial mode respectively. See also
Automatic bootloader / Bootstrap .
RESET SW5 PDn Resets the module, FTDI chip, and mikroBUS slots
Table 3: User button definitions
3.4 User LEDs
EVK-IRIS-W10 supports 16 LEDs:
•
Power status ( D10 ): Indicates 3V3 on the board when lit (green) dependent on SW6
•
MCU-LINK Power status ( D19 ): Indicates 3V3 on MCU-LINK when lit (green), dependent on
SW6.
•
OTG ( D20 ): Indicates OTG circuit is enabled lit (green).
•
OTG-Fault ( D2 ): Indicates over current of the OTG circuit when lit (red).
•
MCU-LINK ( LED1 - LED5 ): Indicate MCU-LINK connection status. See also MCU-LINK .
•
UART3 status ( D4–D9 ): Indicate UART3 signal status under GPIO control, as shown in
Figure 19 .
•
System status ( RGB1 ): Powered by +3V3 and turned on by pulling the associated GPIO low.
Associated GPIOs can be used as ADCs after disconnecting each LED by removing
resistors
R77–R79 , as shown in Table 4 and Figure 18 .
RGB LED Associated GPIO Disable option
Red (pin1) GPIO44 Remove R77 to disconnect
Green (pin2) GPIO43 Remove R78 to disconnect
Blue (pin3) GPIO42 Remove R79 to disconnect
Table 4: RGB LED-associated signals