Serial Port Configuration Application Scenarios; Baud Rate Configuration; Reference Process; Troubleshooting - Huawei ME909u-523 Application Manual

HUAWEI ME909u-523 LTE LGA Module
Application Guide
14

14.1 Baud Rate Configuration

14.1.1 Reference Process

Command
AT+IPR?
+IPR: 115200
OK
AT+IPR="<baud rate>"
OK

14.1.2 Troubleshooting

Scenario
Specify a baud rate not
supported by a
module.
Issue 04 (2014-12-08)
Serial Port Configuration Application
NOTE
If a module's baud rate is too low, its communication speed will be slow.

 At present, the ME909u-523 supports the following baud rates: 600, 1200, 2400, 4800,
9600, 19200, 38400, 57600, and 115200.
In future, the higher speed baud rate may be supported, such as 230400, 460800, 921600,

1000000, 1500000, 2500000, 3000000, 3500000 and 4000000
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Serial Port Configuration Application Scenarios

Description
Query the baud rate currently used by a module.
Set a module's baud rate. After a new baud rate is
specified, the module communicates using the new
baud rate.
Possible Error
Information
AT+IPR="<baud rate>"
ERROR
Scenarios
Solution
Check that the specified
baud rate is within the range
of supported baud rates.
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