Latest revision as of 11:55, 11 June 2012

Test Cypress firmware and driver

View doc: C:\Cypress\USB\doc\General\!CyConsole.pdf

Install Cypress driver

Connect the USB board to the PC.

You are asked to install the drivers.

Select the default drivers: they have been installed when installing the Cypress tools.

Launch CyConsole.

The tab "Device Properties" shows you the Cypress Vendor Id and the Device Id of the EEPROM-less chip.

Launch usbview. The list should show a Cypress EZ-USB device.

Install custom driver

• Launch CyConsole
  • Choose Options -> EZ-USB Interface
    • Click !SelectMon and select loopback.hex
    • Click Load Mon

The firmware gets downloaded and Windows finds a new hardware.

Install from your loopback.inf file.

Uninstall custom driver

Login as administrator

Launch CyConsole and upload the firmware

• Right-click on My Computer -> Properties
  • Choose tab Hardware -> button Device Manager
    • Open the group Universal Serial Bus controllers
    • Right-click on the custom device -> Uninstall

Test firmware

Loopback firmware

At this point, the firmware should be load in the Cypress EZ-USB.

Launch CyConsole. The tab Device Properties lets you check that your firmware is running.

Open the tab Other Endpt Xfers

• Select Endpoint 0x02 (Out)
• Type 01 02 03 04 in the field Hex Bytes to Send
• Type 10 in the field Bytes of Data
• Click Transfer Data

The console shows

• Bulk OUT Transfer
• 0000 01 02 03 04 00 00 00 00 00 00
• Bulk OUT complete

Read data back

• Select Endpoint 0x86 (In)
• Type 10 in the field Bytes of Data
• Click Transfer Data

The console shows

• Bulk IN Transfer
• 0000 01 02 03 04 00 00 00 00 00 00
• Bulk IN complete

You can try the same from Endpoint 4 to Endpoint 8

USB works with packets and an end of packet delimiter. Reading more bytes than what was sent is not a problem, only the bytes written are given back. But reading less bytes than what was set doesn't work.