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AT commands
I/O settings commands
Digi XBee® 3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide
212
Parameter
Description
0
Disabled
1
UART DOUT enabled
Default
1
P4 (DIO14/DIN)
Sets or displays the DIO14/DIN configuration (pin 3).
Parameter range
0 - 1
Parameter
Description
0
Disabled
1
UART DIN enabled
Default
1
PD (Pull Direction)
The resistor pull direction bit field (
1
= pull-up,
0
= pull-down) for corresponding I/O lines that are set
by
PR (Pull-up/down Resistor Enable)
.
If the bit is not set in
PR
, the device uses
PD
.
Note
Resistors are not applied to disabled lines.
See
PR (Pull-up/down Resistor Enable)
for bit mappings, which are the same.
Parameter range
0x0 – 0x7FFF
Default
0 – 0x7FFF
PR (Pull-up/down Resistor Enable)
Sets or displays the bit field that configures the internal resistor status for the digital input lines.
Internal pull-up/down resistors are not available for digital output pins, analog input pins, or for
disabled pins.
Use the
PD
command to specify whether the resistor is pull-up or pull-down.
n
If you set a
PR
bit to 1, it enables the pull-up/down resistor.
n
If you set a
PR
bit to 0, it specifies no internal pull-up/down resistor.