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Firmware-Defined GPIOs
GPIO Pin
GPIO
Name
Definition
Input Out-
STAT LED1
NO
STAT LED2
NO
STAT LED3
NO
W STAT
NO
LED
MCU
NO
READY
FACTORY
YES
RESET
WAKE UP0
YES
WAKE UP1
YES
The functions of the firmware-defined GPIOs are fixed and cannot be changed.
10
Set default level by using resistor with 10 k Ohm to GND
Product Specification Rev. 1.1
GPIO Level
Default
Active Boot
put
YES
-
LOW
YES
-
LOW
YES
-
LOW
YES
-
LOW
YES
-
HIGH
10
NO
LOW
HIGH
10
NO
LOW
HIGH
10
NO
LOW
HIGH
Firmware State
Firmware Application
Active
ON
OFF: Shut-off
BLINK (1sec):
Firmware active
OFF
OFF: no IP assigned
ON: IP assigned
OFF
OFF: no error
ON: error appeared
OFF
OFF: no AP
connection
BLINK (0.2 s):
Scanning for AP
BLINK (0.4 s): trying to
connect to AP
BLINK (1.2 s): WLAN
Error
ON: Associated with
AP
OFF
OFF: Shut-off
ON: Firmware ready
inactive
Set active for min.
10 seconds
inactive
Set active for min.
100 ms
inactive
Set active for min.
100 ms
PAN9420 Wi-Fi Module
4 Specification
Firmware Function
MCU status
(heartbeat)
IP-Connectivity in
Infrastructure mode
MCU firmware error
WLAN connectivity
in
Infrastructure mode
Firmware
application is ready
Restore firmware
default
Wake up after shut-
off
Wake up after shut-
off
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