Test Suite; Test Suite Introduction - Ebyte E52-400/900NW22S User Manual

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V. Test Suite

5.1 Test Suite Introduction

The E52-400/900NW22S-TB test kit is designed to help users quickly evaluate module-related functions. For
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first-time use, it is recommended to purchase several test kits directly for testing (the test kit has been soldered with
the E52-400/900NW22S module).
The hardware integrates power supply circuit, reset circuit, button circuit, power indicator light PWR, work
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indicator LED, etc., and an 18650 battery box is reserved at the bottom. Customers can install 18650 batteries by
themselves for testing.
The test kit has connected the required pins of the module to the corresponding peripherals, the most important of
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which is the TTL to USB circuit. Users only need to connect the Micro USB to the computer, and a COM port will
appear on the computer's device manager.
If you do not see the corresponding COM, there may be the following possibilities:
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The CH340 driver is being installed automatically, please wait patiently for a while; if the driver cannot be
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installed automatically, you need to install it manually.
Check whether the module power light PWR is on and whether the module is supplying power normally?
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Download any serial port debugging tool. Under the relevant downloads on the official website, there is the XCOM
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serial port debugging assistant;
Open the serial port debugging assistant, follow the above steps to simply set up the software, and send
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Figure 5.1.1 Physical Object
Figure 5.1.2 Device Manager checks COM port
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E52-400/900NW22S User Manual