Sigma DE2-70 manual USB Monitoring, Press Load Memory Content to a File button

DE2-70 User Manual

into the memory.

The Sequential Read function is used to read the contents of the SDRAM-U1 and place them into a file as follows:

1.Specify the starting address in the Address box.

2.Specify the number of bytes to be copied into the file in the Length box. If the entire contents of the SDRAM-U1 are to be copied (which involves all 32 Mbytes), then place a checkmark in the Entire Memory box.

3.Press Load Memory Content to a File button.

4.When the Control Panel responds with the standard Windows dialog box asking for the destination file, specify the desired file in the usual manner.

Users can use the similar way to access the SSRAM and Flash. Please note that users need to erase the flash before writing data to it.

3.5 USB Monitoring

The Control Panel provides users a USB monitoring tool which monitors the real-time status of a USB mouse connected to the DE2-70 board. The movement of the mouse and the status of the three buttons will be shown in the graphical and text interface. The mouse movement is translated as a position (x,y) with range from (0,0)~(1023,767). This function can be used to verify the functionality of the USB Host.

Follow the steps below to exercise the USB Mouse Monitoring tool:

1.Choosing the USB tab leads to the window in Figure 3.8.

2.Plug an USB mouse to the USB HOST port on the DE2-70 board.

3.Press the Start button to start the USB mouse monitoring process, and button caption is changed from Start to Stop. In the monitoring process, the status of the USB mouse is updated and shown in the Control Panel’s GUI window in real-time. Press Stop to terminate the monitoring process.

18