1 Establishing basic functionality
The software should be started selecting ams->TMD2725 EVM->TMD2725_EVM command in the
Windows menu or by double clicking the AOS_EVM.exe file from the installation directory. The default installation directory, depending on the device and the operating system you are using, is:
C:\Program Files\ams\TMD2725EVM Windows 32 bit operating systems
C:\Program Files (x86)\ams\TMD2725EVM Windows 64 bit operating systems
A different install path may be selected by the user. When started, the TMD2725 window will open on the PC.
The balance of this document identifies and describes the controls available on the GUI. In combination with the TMD2725 datasheet, the QSG and application notes available on the ams website, www.ams.com. There should be enough information to allow evaluation of the TMD2725 device.
2 TMD2725 EVM graphical user interface (GUI)
2.1 Software overview
On successful initialization, the software displays a main window, containing controls pertinent to the connected device. If the software detects an error, it will display an error window.
If “Device not found or is unsupported” appears, verify that the correct daughterboard is properly connected to the motherboard. If “Cannot connect to EVM board” appears, verify the USB cable is connected. A green LED on the EVM Controller will flash to indicate that the USB cable is connected and providing power to the system.
If the EVM board is disconnected from the USB bus while the program is running it will display an error message and then terminate. Reconnect the EVM board and restart the program. page 5/16
The main window for the TMD2725 is shown below.
Clicking on the red “X” will close the window and terminate the application.
The checkboxes near the top of the window power on the chip and enable the ALS and Prox functions. The ALS and Prox tabs contains controls for the remaining functions and displays status and data from the device as it operates.
If the default LUX EQ XML file (TMD2725_luxeq.xml) is found in the system default documents directory (%USERPROFILE%\Documents, also known as My Documents), then the file will be loaded, the Lux coefficients changed and a dialog displaying the new coefficients will be displayed, notifying you that coefficients have been automatically loaded that override the default open-air coefficients. This allows storing a special set of coefficients that will be automatically loaded and used. page 6/16
