Telit Wireless Solutions ME910G1 At Commands Reference Guide

ME310G1/ME910G1/ML865G1 AT Commands Reference Guide
80617ST10991A Rev.4 Page 306 of 545 2020-04-15
3.8.10. AT#I2CRD - Read from I2C
This command is used to read data from an I2C peripheral connected to module.
[1] Hardware User's Guide of the used module
SIM Presence
Setting saved
Can be aborted
MAX timeout
SELINT
Not required
No
No
-
2
AT#I2CRD=<sdaPin>,<sclPin>,<deviceId>,<registerId>,<len>
Execution command reads data from an I2C peripheral connected to module GPIOs. After the
reading activity has been accomplished, the GPIOs will not be restored to the original setting. Use
#GPIO command to see the status of the used GPIOs. To have information on GPIO pins refer to
document [1].
Parameters:
Name
Type
Default
Description
<sdaPin>
integer
-
GPIO number for SDA. To know the range use #I2CRD test
command.
<sclPin>
integer
-
GPIO number for SCL. To know the range use #I2CRD test
command.
<deviceId>
hex
N/A
address of the I2C device (7 bits). The Least Significant Bit
is used for read/write command, but in this #I2CCF
implementation, it doesn't matter if the LSB is set to 0 or 1.
Address must be written in hexadecimal form without 0x.
10 bit address is also supported
Value:
0÷3FF
:
addressing range extended to 10 bit
<registerId>
hex
N/A
Register to read data from
Value:
0÷FE
:
value must be written in hexadecimal form without 0x
<len>
integer
N/A
Number of data to receive
• Data Read from I2C will be dumped in
hexadecimal format
• If data requested are more than data available in
the device, dummy data (normally 0x00 or 0xff) will
be dumped
Value:
1÷254
:
number of data to receive
AT#I2CRD=?
Test command returns the range of available values for parameters <sdaPin>, <sclPin>,
<deviceId>, <registerId>, <len>.

Telit Wireless Solutions ME910G1 Specifications

General

Brand	Telit Wireless Solutions
Model	ME910G1
Category	Wireless modules
Language	English