This section describes how to use the GUI to control the device enter and exit shutdown mode.

Click the SHUTDOWN button on the top right corner of the LED Control Page to open the Shutdown Controls panel as shown in Figure 3-21. There are two pairs of methods to control the device enter and exit shutdown mode as described in the device data sheet.

Figure 3-21 Shutdown Controls Open

1. Enter shutdown mode

   Click the Send Shutdown Command button or Pull down SCL as 100ms button as shown in Figure 3-22 to make the device enter shutdown mode. After that, the clicked button is hidden for clicking protection and the button below is enabled for clicking. The hardware connection status, as shown in Figure 3-3, shows the Hardware not Connected as the I²C of the device is inactive in shutdown mode.

   As for LP5815, STAT pin is required to be pulled down through populating the jumper J3 to make the device enter shutdown mode. The LP5815 exits shutdown mode once the STAT is pulled up through removing the jumper J3.

   
   

   

   
   Figure 3-22 Enter Shutdown
2. Exit shutdown mode

   Click the Toggle SDA 8 times button if Send Shutdown Command button is clicked in the step1 or Click the Pull up SCL button if Pull down SCL as 100ms button is clicked in the step1 as shown in Figure 3-23 to make the device exit shutdown mode. After clicking exit shutdown button, the GUI tries to connect to the device and shows the status on the hardware connection status bar.

   
   

   

   
   Figure 3-23 Exit Shutdown