Huawei MU609 - 3 Serial Port Configuration Application Scenarios; Baud Rate Configuration; Reference Process; Troubleshooting

HUAWEI MU609 HSPA LGA Module
Application Guide
Serial Port Configuration Application Scenarios
Issue 02 (2013-09-18)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
23
3 Serial Port Configuration Application
Scenarios
3.1 Baud Rate Configuration
3.1.1 Reference Process
Command
Description
AT+IPR?
Query the baud rate currently used by a module.
+IPR: 115200
OK
AT+IPR="<baud rate>"
Set a module's baud rate. After a new baud rate is
specified, the module communicates using the new
baud rate.
OK
Notes:

If a module's baud rate is too low, its communication speed will be slow.

At present, the MU609 supports the following baud rates: 300, 600, 1200, 2400, 4800,
9600, 19200, 38400, 57600, 115200, and 230400.
3.1.2 Troubleshooting
Scenario
Possible Error
Information
Solution
Specify a baud rate not
supported by a
module.
AT+IPR="<baud rate>"
ERROR
Check that the specified
baud rate is within the range
of supported baud rates.