Fx2lafw
Revision as of 16:26, 6 May 2012 by Uwe Hermann (talk | contribs) (Braintechnology USB Interface V2.x)
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 | Support Status |
|---|---|---|---|---|---|---|---|
| Braintechnology USB-LPS | 16d0:0498 | 8/16 (PB0-PB7, PD0-PD7) | 56PVXC (SSOP) | none | ? 68 Ω | Atmel ATML0816 TINY13 20SU | TODO |
| Braintechnology USB Interface V2.x | 04b4:8613 | 8/16 (PB0-PB7, PD0-PD7) | 56PVXC (SSOP) | BASIC SUPPORT | |||
| CWAV BusBee | 4 | ? | ? | ? Ω | ? | TODO | |
| CWAV USBee AX | 08a9:0014 | 8 digital (PB0-PB7), 1 analog (PD0-PD7) | ? | ? | ? Ω | ? | BASIC SUPPORT |
| 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 | WIP |
| CWAV USBee ZX | 8 (PB0-PB7) | ? | ? | ? Ω | ? | TODO | |
| EE Electronics XLA ESLA100 | 0925:3881 | 8 (PB0-PB7) | 56LFXC (QFN) | NXP 74HC245D | 100 Ω | Atmel ATMLH911 02B 1 | DONE |
| EE Electronics ESLA201A | 08a9:0014 | 8 digital (PB0-PB7), 1 analog (PD0-PD7) | 56LFXC (QFN) | none | 100 Ω | Atmel ATMLH113 | BASIC SUPPORT |
| Lcsoft Mini Board | 04b4:8613 | 8/16 (PB0-PB7, PD0-PD7) | 56PVXC (SSOP) | none | none | Shenzhen First-Rank Technology T24C128A | BASIC SUPPORT |
| Saleae Logic | 0925:3881 | 8 (PB0-PB7) | 56PVXC (SSOP) | ST DVIULC6-4SC6 | ? Ω | ? | DONE |
| Robomotic BugLogic 3 | 0925:3881 | 8 (PB0-PB7) | ? | ? | ? | ? | DONE |
| Robomotic MiniLogic | 0925:3881 | 8 (PB0-PB7) | 56PVXC (SSOP) | 74HC244A | ? | 2x Microchip 24LC02BI, 1x 24LC64I | DONE |
All devices use a 24MHz crystal.
Download
$ git clone git://sigrok.git.sourceforge.net/gitroot/sigrok/fx2lafw
Usage
Building sigrok
- Build and install latest git head sigrok for your platform, see e.g. Linux.
- When building libsigrok, instead of ./configure do
$ ./configure --enable-fx2lafw --disable-saleae-logic
- Follow all other steps as normal.
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 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
8-channel- 16-channel
- Analog sampling
- 1-channel
- 2-channel
- Voltage meter
Triggering- Trigger pin
- Clock input
- Clock output
- Frequency/pulse counter
Resources
- Browse Source Code
- sdcc (C compiler for 8051 microcontrollers, usable for FX2)
- fx2lib: SF project page, blog article, github repo, mailing list
- Cypress FX2 docs:
- CY7C68013A, CY7C68014A, CY7C68015A, CY7C68016A datasheet (PDF)
- EZ-USB Technical Reference Manual (TRM) (PDF)
- EZ-USB FX2LP appnotes
- EZ-USB FX2LP errata
- GPIF Designer (Windows software, requires login)
- CY3681 EZ-USB FX2 Development Kit (GPIF designer downloadable without login)