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Adventurer
Adventurer
2,263 Views
Registered: ‎01-13-2015

fail of re-connection to COM port via USB ULPI on Zc702

HI all.

I'm testing USB CDC based on an example source from Xilnx.

Please refer to http://www.wiki.xilinx.com/Zynq-7000+AP+SoC+USB+CDC+Device+Class+Design+Example+Techtip.

This example code works well, for first connection, but re-connection does not work.

After resetting or rebooting Zc702 board, I cannot connect to the virtual COM port anymore.

I can see the COM port in the device manager, but Tera Term does not show up the COM port.

I use window 7. Is this windows COM port driver's problem? or the example code has some bugs?

please help me...

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