Infineon AIROC IFW56810, Getting Started

Page: 20 / 22

Application Note 20 of 22 002-34322 Rev. *A
2021-12-14
Getting started with AIROC™ IFW56810 Single -band Wi-Fi 4 Cloud
Connectivity Manager
FAQs
8 FAQs
1. Two COM ports enumerated when the kit is connected
−
The IFW956810 CCM evaluation kit has a FT2232H chip capable of supporting USB to dual-channel UART
(USB serial converter A and USB serial converter B). Only USB serial converter B is configured in the kit for
USB-to-UART conversion. Therefore, use the higher-number COM port among the enumerated COM ports
to communicate with the kit.
2. Errors appear on the terminal when commands are entered
For example:
AT+SUBCRIBE
ERR01 Invalid cmd
−
Make sure that you have typed the command correctly.
−
Note the error codes and refer to the AWS IoT ExpressLink Programmer's Guide for details of the error
code and to determine the cause.
3. BLE/SoftAP onboarding does not work with the Cirrent app
−
Check if
CONFMODE
was enabled using the
AT+CONFMODE
command.
4. Executing the AT+CONNECT command results in ERR 14 UNABLE TO CONNECT
The
AT+CONNECT
command first connects to Wi-Fi if not already connected and then connects to the AWS
IoT Core.
−
Check the Wi-Fi connection.
−
Check the entered Wi-Fi credentials.
−
Type the following command to verify whether the kit connects to Wi-Fi:
AT+DIAG PING 8.8.8.8
If the connection is successful, the device will respond with “ OK Received ping response in <ping latency
ms>”.
−
If the Wi-Fi connection test is successful, check the AWS IoT connection.
−
Check the device certificate uploaded to the AWS IoT Core in Section 4.4 .
5. How to change the Wi-Fi network connected
−
Execute
AT+DISCONNECT
on the serial terminal to disconnect from the current Wi-Fi network.
−
See Section 4.5 to configure the required Wi-Fi credentials.