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For a general introduction to USB and FX2 microcontroller firmware, see the section "General USB and FX2 firmware introduction".

TE USB FX2 module comes with an already loaded modules are shipped with a preloaded FX2 USB microcontroller 's firmware inside the EEPROM.

For an introduction to the reference firmware, see section "Reference firmware (Trenz Electronic v3.02 description): preloaded USB Firmware (FX2 USB microcontroller, EEPROM)".

This The preloaded firmware expose to host computer's software (through USB) the exposes Trenz Electronic Firmware API (TE API Commands (FW APIs)) to the host computer software (through USB).

To change the EEPROM content (reference firmware) from Generation 2 to Generation 3, you must shall follow this procedure. You may also watch this video play list.

For an introduction to recovery boot and regular/update boot: , see sections  "USB FX2 microcontroller's firmware configuration", "USB connection is unresponsive", "Recovery Boot (TE USB FX2 Firmware Recovery)" and "Update Boot (TE USB FX2 Firmware Update)".

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(5b) If libusb or libusbx are used (with WinUSB driver and/or Zadig), the software tools Cypress USB Console, Cypress USB Control Center , Python Open_FUT (Gen2), Python Open_FUT (Gen 3) and C# OpenFutNet could not be directly used. The code of these tools should be rewritten using libusb or libusbx instead of Cypress libraries (CyAPI.lib and CyUSB.dll) and the derived Trenz Electronic libraries (TE_USB_FX2_CyAPI.dll and TE_USB_FX2_CyUSB.dll). See Linux_FUT as a starting point for a new software tool using libusb or libusbx under Windows OS.

 

Info

These libraries are not yet officially supported under Windows, but they are already used with TE USB FX2 modules under Linux (see the comunity contribution Linux_FUT). Zadig is not yet officially supported under Windows.

 

(6) To default, the FX2 hardware (i.e with EEPROM isolated =>hardware's first stage loader) enumerates the USB FX2 microcontroller chip as VID=0x04B4 (Cypress) and PID=0x8613 (FX2), and provides support for loading firmware into RAM. 

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(7) See section "Custom FX2 microcontroller's firmware".

 

Note
EEPROM connection shall always be enabled during EEPROM programming.
Info

Using Cypress firmware update tools with generation 2 modules does require a recovery boot, in order to force enumeration as Cypress USB Generic Driver.

On the other side, using Cypress firmware update tools with generation 3 modules may not require a recovery boot (if a Generation 3 reference firmware is running on USB FX2 microcontroller), but only an update boot. This is possible because the original Cypress USB Generic Driver (in case of a recovery boot) and the Trenz Electronic USB FX2 device driver ( in case of a regular boot) are both Cypress driver. Trenz Electronic USB FX2 driver derives from the original Cypress USB Generic Driver.