User's Manual

GPIO
38  Digi Connect Wi-EM 9210 Hardware Reference
CTS/GPIO-
2
GPIO[1] Allocated
Pin 7 on the
main header
Used for the serial CTS, but could be
reassigned as a GPIO, IRQ0 or PICO-1. If
used with the development board, this pin
maps to GPIO-2.
DCD//
SPI_EN/
GPIO-1
GPIO[0] Allocated
Pin 8 on the
main header
Used for the serial DCD or SPI_EN, but
could be reassugned as a GPIO or PICO-0.
If used with the development board, this pin
maps to GPIO-1.
TXD2/
GPIO-8
GPIO[15] Allocated
Pin 12 on the
main header
Used for the serial2 TXD, but could be
reassigned as a GPIOor timer in 9.
If used with the development board, this pin
maps to GPIO-8.
Network
link Green
LED
GPIO[14] Reserved
Connected to
the Green
LED above
the Yellow
LED
Network link status:
On - unit is associated with an access point
Blinking slowly - unit is in ad hoc mode
Blinking quickly - unit is scanning for a
network
/INIT GPIO[13] Available
Connected to
the button on
the module
Should be configured as a GPIO input.
Serial Port
activity
LED/MFGO
GPIO [12] Allocated
Connected to
the green
LED above
the red LED
Used as the NET+OS green LED, but can be
reassigned as a general purpose LED. It must
remain a GPIO output for the LED to operate
correctly. The LED is lit when the signal is
low.
RXD2/
GPIO-9
GPIO[11] Allocated
Pin 11 on the
main header
Used for the serial2 RXD, but could be
reassigned as a GPIO or IRQ2.
If used with the development board, this pin
maps to GPIO-9.
IRQ1 GPIO[10] Reserved N/A N/A
GPIO Pin Use
Name
Register
Bit
Category
External
Interface
Description