| Evaluation Board User Guide |
|
|
INERTIAL SENSOR EVALUATION SYSTEM GRAPHICAL USER INTERFACE
CONFIGURATION TAB
When the system is set up and configured, press SW2, which is shown in Figure 9, to reset the ISEB and have it detect the currently connected satellite. This must be done when the satellite connected to the ISEB is replaced by a satellite of a different part only; replacing the satellite with a satellite for the same part, that is, an
The inertial sensor evaluation system GUI is opened by executing the ADXL345 Evaluation GUI.exe file located in the /ADXL345 Evaluation GUI/ folder. To exit the GUI, use the Stop VI button to disconnect from the ISEB. Then exit the application by selecting File and Exit or by pressing Ctrl+Q.
The first screen brought up is the Configuration tab (see Figure 10). This screen is used for manual configuration of the sensor, for setting up the communication port between the PC and ISEB, and for setting the sensor voltage values. Configuration register values can be saved and reloaded.
It is important to note that the register settings entered on this screen are independent from other GUI screens. Each screen requires a different register setup, and any values that can be altered are made available for that particular screen.
With the Configuration tab open, select the correct COM port for the ISEB from the VISA Resource Name menu (see Figure 10). The correct COM port can be found by checking the Device Manager for the ADI Inertial Sensor Evaluation System under
the Ports (COM & LPT) selection.
Figure 11. ISEB Connected to PC
Clicking the round button above Vs Set causes the supply voltage, VS, of the ADXL345 to be updated based on the value in the Desired Vs [V] box. The Current [μA] and Temp [degC] boxes are also updated whenever the Vs Set button is clicked.
Read the contents of the ADXL345 registers by clicking the Read All Registers button in the Register Write box. This action updates all register values and indicators on the right side of the screen. Figure 11 depicts a sensor that is powered on with a DevID of 0xE5, a BW/RATE value of 0x0A, and an INT_SOURCE value of 0x02. All other registers remain in their default state of 0x00.
To write a value to a register, select the register from the Target Register menu and click the D7 through D0 indicators to set the value. If an indicator is lit, the value written to that bit is a Logic 1, whereas an unlit indicator indicates a Logic 0. When the register is configured correctly, click the Write Register button to send the value to the ADXL345. Note that the D7 through D0 indicators under Target Register are not updated based on the value stored in that register.
To save a configuration, click the Save Config button in the Configuration File box (see Figure 11). Save the file with a
.txt extension. After a configuration is saved, you can load the configuration back into the device by clicking the Load Config button and selecting the configuration file.
Figure 10. Selecting the Correct COM Port for the ISEB
After selecting the COM port, click on Connect to connect to the ISEB. This causes the indicator under Vs Set to light up and update the Current Vs [V] value, verifying that the board is connected (see Figure 11).
Rev. 0 Page 6 of 12