ETRX357USB AND ETRX357USB-LRS 1 Introduction The ETRX357USB and ETRX357USB-LRS wireless mesh networking USB Sticks are effectively ® RS232 to USB bridges connected to the corresponding ETRX3 series ZigBee modules. This allows connectivity to a computer’s USB port. The supplied drivers create a virtual COM Port, so that the command line of the ETRX357 can be accessed via any terminal software application.
For further technical information, including radio certification, see the ETRX357 or ETRX357-LRS modules product manuals. If you purchase ETRX357USB sticks without printed markings on the case, you may be responsible for applying a marking appropriate to their geographical area of use, such as the FCC certification.
Please note that each ETRX357USB has a unique serial number which requires the installation procedure to be repeated with every new ETRX357USB being attached to the computer, though the process is not obtrusive. This allows multiple ETRX357USB sticks to be used on the same computer at any one time.
Telegesis.) 8 Custom Firmware Development If you intend to develop custom firmware to go onto the ETRX357USB the InSight toolchain from Ember Corporation is required. This is obtainable from Ember as part of their development kit – www.ember.com The USB stick contains an ETRX357-LRS module based on the Ember EM357 and a USB-to-serial bridge chip.
There is no “blank” version of the ETRX357 Module available. All Modules carry both the Ember Stack and the Telegesis AT style Command Layer. Where customers wish to add their own firmware they can erase and write it to the flash memory of the Ember EM35x.
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