The LP581XEVM-GUI is a convenient tool to control and evaluate all functions of LP581x family. Open the LP581x.exe file and plug the USB cable into the USB port of the computer. The GUI automatically connects with the LP5811-10EVM. Figure 3-3 illustrate the status bar showing the connection status at the bottom of GUI. Hardware Connected shows in the status and the indicator in the USB2ANY stops blinking when successfully connected. Click the connection button to connect or disconnect the LP5811-10EVM with the GUI.

Figure 3-3 Status Bar

If the USB2ANY has been used to evaluate other EVMs and updated by other firmware version (such as, 2.8.2.0), then the correct firmware version must be updated into USB2ANY. Follow the instructions shown in the GUI when plugging in the USB cable to update the firmware successfully. SeeFigure 3-4.

Figure 3-4 Firmware Update

If the USB2ANY has not been previously used to evaluate any EVM before, then an unknown version firmware is detected by GUI. When the update firmware notification shows up, follow these steps.

1. Unplug the USB cable (do not click the UPDATE button).
2. Press the BSL button inside USB2ANY, then plug in the USB cable.
3. Click UPDATE button.

Home Page

Figure 4-7 shows the I2C address selected in the Home page. Click the Configure & Connect button to connect the USB2ANY with the LP5811-10EVM. The I2C protocol with broadcast chip address is the default. Users can also choose the I2C independent address depending on the IC which is under evaluation. For example, the default jumper setting is used for LP5811D, so choose 0x17 as the independent I2C address. See the I2C address details for each device on LP5811-10EVM in the table below.

Figure 3-7 Home Page

Click the START button below the LED CONTROL block to enter the Mode Selection Page while every individual register is configured in the REGISTER MAP page.

Mode Select Page

Set the operation mode for every LED pixel in the LED mode select page. See the details in this page in Figure 4-8.

1. Chip Enable button: Click this button to enable device at the beginning of evaluation.
2. Update Command: Click this button to update all the Device Configuration Register values.
3. LED Select: Before setting operation mode for LEDs, one or multiple LEDs (Shift + select for multiple LED selections) must be selected first.
4. Mode Selection: This part includes LED enable/disable, LED operation mode (manual/auto), PWM dimming scale (linear/exponential), PWM phase align (forward/middle/backward).
5. Device Configuration: Click this button to navigate to the Device configuration page. See Figure 4-9.

Figure 3-8 Mode Select Page

Figure 3-9 Device Configuration Page

After all the device configurations have been configured, click NEXT button to navigate to Manual Mode Configuration page.

Auto Mode Configuration Page

This page is used to configure the animation engine of each device. One animation engine pattern is defined as Figure 4-11. Three animation engine units (AEU) and two animation pause units (APU) compose the animation engine pattern. Users can also see more details about the animation engine in data sheet.

Figure 3-11 Animation Engine Pattern

All the parameters in the animation engine related register have random value when power up the device, so configure all the parameters before running the animation. Figure 4-12 shows the Auto Mode Configuration page.

Figure 3-12 Auto Mode Configuration Page

Users can preview the LED animation pattern by enabling the Preview Mode and click the SIMULATE button. See Figure 4-13.

Figure 3-13 Preview Mode

The dimming curve is also shown under the configuration page. See Figure 4-14.

Figure 3-14 Dimming Curve Preview

After making sure all the configurations have been set properly, click the START button in the AEU configuration section. The device starts to generate the animation effect desired.

Fault Detection

The LP5811/LP5810 continually detects the status for every LED dot. Once an open or short failure is detected, the fault status is also be monitored on the GUI. Clicking the fault summary at the right-top of the GUI shows the summary for all fault status (see Figure 3-15). The Clear Short LED and Clear open LED buttons are used to clear related fault flags when the failures are removed.

To have precise detection results, the PWM must be set above 25.

Figure 3-15 LED Fault Report