Subversion Repositories usb_fpga_2_16

flashdemo

default

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This example demonstrates how data can be read and written to/from the

This is the default firmware for ZTEX USB-FPGA Modules 2.16a and 2.16b.

Flash memory.

It supports:

During the start-up the firmware (defined in flashdemo.c) reads the

* Firmware uploading

number of last sector n from sector 0 (dword at position 0) and

* High speed FPGA configuration via USB

increments it by one. If n is larger than or equal to the total amount

* Storage of firmware and bitstream in non-volatile memory

of sectors, or if it is equal to 0, n is set to 1.

* Configuration data: Storage of device settings in MAC-EEPROM

Then n is written back to sector 0 and sector n is filled with the

The upload utility Default.java creates the configuration data structure

string "Hello World!".

in MAC-EEPROM and can be used to upload the default firmware to EEPROM.

The wrapper scripts prog-*.sh can be used to do that for the respective

The host software (defined in FlashDemo.java) reads out the string from

FPGA Board.