Ublox EVK-NORA-W101, Руководство пользователя

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EVK-NORA-W1 - User guide
UBX-22002764 - R02 Hardware description Page 11 of 22
C1-Public
Table 2 describes the various user buttons and their relationship with the corresponding GPIO signals
and protection diodes shown in Figure 7 . For proper operation, the internal pull-up resistor of each
NORA-W10 GPIO pin must be enabled.
Button Switch GPIO Protection diode Function
1 SW1 GPIO46 D21 No predefined function (software controlled)
2 SW2 GPIO0 D22 BOOTn
3 SW3 GPIO47 D23 No predefined function (software controlled)
4 SW4 GPIO48 D24 No predefined function (software controlled)
5 SW5 - - RESETn
Table 2 : User button components
3.5 LEDs
EVK-NORA-W1 supports eight LEDs:
• Power status (D10): Indicates power on the board when lit (green)
•
UART0 status (D4 – D9): Indicates UART0 signal status under GPIO control, as shown in Figure 9 .
• System status (RGB1): Powered by +3V3 and turned on by pulling the associated GPIO low.
Disconnect each LED from the GPIO by removing resistors R78 – R79, as shown in Table 3 .
Table 3 describes the association between each RGB LED and respective GPIO. Having disconnected
an RGB LED (R78-R79), the related signal can be optionally used for analog-to-digital conversion.
RGB LED Associated GPIO Comments
Red (pin1) GPIO5/ADC1-CH4 Remove R77 to disconnect R-LED
Green (pin2) GPIO2/ADC1-CH1 Remove R78 to disconnect G-LED
Blue (pin3) GPIO8/ADC1-CH7 Remove R79 to disconnect B-LED
Table 3: RGB LED associated signals
Figure 8 shows the schematic for the System status (RGB1) LED. Figure 9 shows the schematic for
the six UART0 status LEDs.
Figure 8: Schematic – RGB and power LED
Figure 9: Schematic – UART0 status LEDs