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GHI Electronics,LLC Embedded Master User Manual
Supported Devices
14. Supported Devices
Embedded Master™ supports many devices through SD/MMC, USB and the may other
peripherals (SPI, I2C, UART, etc.) Many devices use defined “Classes” that are already
supported by Embedded Master.
For example, this web link contains the approved USB classes
www.usb.org/developers/devclass_docs
Some devices use one of the classes or one of the supported chipsets, but this info is not
usually provided in the device documentation.
For example, can USB GPS devices be used with Embedded Master?
The answer is yes, in most cases. Companies, including USB GPS makers, try to get
away from writing drivers for operating systems, so they use one of the available USB<-
>Serial chipsets, if that suites the requirements. The most common chipsets are made by
FTDI, Prolific and Silicon Labs. When a product with USB<-> serial chipset is connected to
the system, the OS will ask for driver. Those drivers are already freely provided by the
chipset makers for free. Once the driver is loaded, the operating system will create a new
virtual COM port. This virtual COM port can then be easily used by applications that
communicate with serial ports.
Back to our GPS device question, most USB GPS are based on Prolific chipsets. Actually,
most low-cost USB serial cables, we tested, were based on Prolific chipset as well. So,
users will read USB GPS data using the methods we provide to access Prolific chipsets.
The following sections mentions some of the supported/planed devices. Many other
devices are supported as well.
SD – MMC
These media devices provide storage for your files/folders. Using Embedded Master, data
can be logged and saved to these storage devices for later retrieval or read the data
stored on these device. So the user has a Mobile data logger.
Mini-SD cards and Micro-SD (TransFlash) are also supported. They basically behave
identically to regular SD cards but have different physical dimensions.
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