SLVUD70 July 2025
By default, the GUI automatically attempts to connect to the EVM.
Once the EVM is powered and the USB cable is connected to the computer, select the connect icon at the bottom left of the GUI. If the bottom notification updates to Error: Failed to connect, connect to a different port.
Figure 3-1 Opening Serial Port Options
Figure 3-2 Selecting an Alternate PortAfter selecting OK, the GUI attempts to connect to the device. If communication to the EVM is lost, resolve most issues by selecting the nRST_MCU button (S1) on the EVM. If the problem persists, verify that the setup is in line with the setup outlined in Section 2.3.
Diagnose further issues by confirming that the VSYS is powered. The first way to confirm that the VSYS is powered is through an external VSYS connection, in which case the J6 jumper is not populated. The second way is to establish that the J6 jumper is populated if using a USB cable to power the PMIC. Verify that the I2C pull-up domain is active.