R308 AT Command Manual - wless.ru

R308 AT Commands
S13 – ETRX2: Pull-up enable ETRX3: I/O Configuration
Description
Parameters
Configures the I/O pins.
XXXX (ETRX2) or XXXXXXXX (ETRX3)
Setting a bit on the ETRX2 enables the builtin
pull-up on the corresponding pin.
Setting a bit on the ETRX3 will have the
following effect:
Where XXXX represents a 16-bit hexadecimal
number and XXXXXXXX represents a 32-bit
hexadecimal number.
S13 S16 S18
0 0 0 Floating Input
0 0 1 floating input
0 1 0 Output driving 0
0 1 1 Output driving 1
1 0 0 Input with pull-down
1 0 1 Input with pull-up
1 1 0 Open Drain Output (0)
1 1 1 Open Drain Output
(open)
Operations
R/W LOCAL
R/W REMOTE
Becomes effective
After Reset
ETRX2: representing I/O pins
xx BA98 7654 3210
e.g. setting bit 7 to 1 will enable the pull-up for I/O
pin 7
ETRX3: representing the I/O pins
xxxxxxxx
e.g. setting bit 7 to 1 will configure PA7 to either be
an input with pull-up or pull-down, or an open-drain
output.
Factory Default
ETRX2: 0000
ETRX3: 00000000
Note
To achieve ultra low current consumption on
the ETRX2 it is recommended not to use the
built-in pull-ups and leave this register in its
default state.
The ETRX357‟s current consumption may
benefit from the use of pull-ups or pull-downs
where inputs are otherwise unconnected.
Storage
Non-Volatile
SW release R300 ●
©2012 Telegesis (UK) Ltd - 68 - AT Command Manual (Rev 3.08)