Fx2lafw

From sigrok
Jump to navigation Jump to search

fx2lafw is an open-source firmware for Cypress FX2 chips which makes them usable as simple logic analyzer hardware.

It is licensed under the terms of the GNU GPL (version 2, or later) and written in C, using sdcc as compiler, and fx2lib as helper library.

Hardware overview

The fx2lafw firmware is meant to work on any FX2-based hardware, including logic analyzers, FX2 eval boards, or other hardware which has this chip on-board.

Here's a quick overview of some of the relevant hardware information we have about the various devices:

Device USB VID:PID Probes (pins) FX2 package Buffer/ESD-protection Resistor per probe I2C EEPROM Status
Braintechnology USB Interface V2.x 04b4:8613 8/16 (PB0-PB7, PD0-PD7) 56PVXC (SSOP) none none Microchip 24LC64I 95%1
Braintechnology USB-LPS 16d0:0498 8/16 (PB0-PB7, PD0-PD7) 56PVXC (SSOP) none ? 68 Ω Atmel ATML0816 TINY13 20SU 95%1
CWAV BusBee ? 4 ? ? ? Ω ? TODO
CWAV USBee AX 08a9:0014 8 digital (PB0-PB7), 1 analog (PD0-PD7) ? ? ? Ω ? 90%1, 2
CWAV USBee DX ? 16 digital, 2 analog ? ? ? Ω ? TODO
CWAV USBee EX2 ? 8 ? ? ? Ω ? TODO
CWAV USBee SX 08a9:0009 8 (PB0-PB7) 56PVXC (SSOP) none 560 Ω Microchip 24LC01B 100%
CWAV USBee ZX ? 8 (PB0-PB7) ? ? ? Ω ? TODO
EE Electronics ESLA201A 08a9:0014 8 digital (PB0-PB7), 1 analog (PD0-PD7) 56LFXC (QFN) none 100 Ω Atmel ATMLH113 90%1, 2
EE Electronics XLA ESLA100 0925:3881 8 (PB0-PB7) 56LFXC (QFN) NXP 74HC245D 100 Ω Atmel ATMLH911 02B 1 100%
Lcsoft Mini Board 04b4:8613 8/16 (PB0-PB7, PD0-PD7) 56PVXC (SSOP) none none Shenzhen First-Rank Technology T24C128A 95%1
Robomotic BugLogic 3 0925:3881 8 (PB0-PB7) ? ? ? ? 100%
Robomotic MiniLogic 0925:3881 8 (PB0-PB7) 56PVXC (SSOP) 74HC244A ? 2x Microchip 24LC02BI, 1x 24LC64I 100%
Saleae Logic 0925:3881 8 (PB0-PB7) 56PVXC (SSOP) ST DVIULC6-4SC6 ? Ω ? 100%

All devices use a 24MHz crystal.

1 Sampling with 8 channels works fine, 16 channel sampling is not yet supported.
2 Analog signal support is not yet implemented.

Download

$ git clone git://sigrok.git.sourceforge.net/gitroot/sigrok/fx2lafw

Usage

Building sigrok

  • Build and install latest git HEAD libsigrok for your platform as usual, see e.g. Linux, Mac OS X, FreeBSD, or Windows.
    • For older libsigrok versions (no longer needed): Instead of ./configure do ./configure --enable-fx2lafw --disable-saleae-logic.

Install udev rules file

These steps prevent the need to run sigrok as superuser.

  • Copy the udev rules from sigrok/libsigrok/contrib/z60_libsigrok.rules to /etc/udev/rules.d/.
  • Restart udev: sudo /etc/init.d/udev restart.

Building fx2lafw

$ cd fx2lafw
$ git clone git://github.com/mulicheng/fx2lib.git
$ make
$ sudo cp hw/*/build/*.fw /usr/local/share/libsigrok/firmware/

Where /usr/local is your installation prefix.

Test

$ sigrok-cli -D

If everything has worked, sigrok can now see your fx2lafw device, ready for use.

TODO

  • Digital sampling with 16 channels
  • Analog sampling
    • 1-channel
    • 2-channel
    • Voltage meter
  • Trigger pin
  • Clock input
  • Clock output
  • Frequency/pulse counter
  • Signal generator

Resources

Retrieved from "https://sigrok.org/w/index.php?title=Fx2lafw&oldid=1793"