problem:
When programming the bitstream in the vivado2019.2 software, JTAG cannot be found when the hardware target is opened, and the open target cannot be connected. The displayed message is:
INFO: [Labtools 27-2285] Connecting to hw_server url TCP:localhost:3121
INFO: [Labtools 27-3415] Connecting to cs_server url TCP:localhost:3042
Solution:
Generally, it is because the driver of Vivado has not been installed, just install the driver, the path is D:\programme\Xilinx\Vivado\2019.2\data\xicom\cable_drivers\nt64\digilent\install_digilent.exe It is
recommended to install it During the process, close the vivado and unplug the Jtag connector first. After the driver is installed successfully, reopen the vivado to connect; otherwise, the connection may not be normal after installation. When you click the open target, turn on the power of the device.