UM0313 datasheet(26/33 Pages) STMICROELECTRONICS

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Supported commands

UM0313

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Supported commands

The microcontroller mounted on the EK302DL board is equipped with dedicated firmware

which supports a set of commands that allow the control of the 3-axis digital output MEMS

sensor and permit the aquisition of the measured acceleration data. The firmware also

handles the communication between the EK board and the PC through the USB bus. These

features allow users to easily write their own applications to exploit the capabilities of the

accelerometer.

This section describes the commands that are supported by the firmware loaded in the

microcontroller of the EK302DL Evaluation Kit.

7.1

Getting started

Before using the commands supported by the firmware, the following procedure must be

performed:

connect the EK302DL to the USB port;

launch an application which allows the sending of commands through the Virtual serial

port. The remainder of this document will assume the use of the Microsoft© Hyper

Terminal program integrated in the Windows XP operating system;

create a new connection, enter a name (ex. “EK302DL”), and click “OK”;

in the “Connect Using” field, select the Virtual COM port to which the USB port has

been mapped, and click “OK”;

in Port Settings, set Bits per second to 115200, Data bits to 8, Parity to None, Stop bits

to 1, and Flow control to None. Click “OK”;

in the Hyper Terminal select Files > Properties > Settings and then click on the “ASCII

Setup” button;

select “Send line ends with line feeds” and “Echo typed characters locally”;

click the “OK” button to close the “ASCII Setup” window;

click the “OK” button to close the “Properties” window.

Once this procedure has been completed the user can utilize the commands described in

the following sections by typing them into the Hyper Terminal window.

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