I’ve been optimizing my firmware for throughput and I thought a good benchmark would be to test it against the CyStream example provided by Cypress. I modified their CyStream.c file to be compatible with the latest firmware file provided by fx2lib. Here is a summary of the changes needed: Include the appropriate header files Change [...]

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I sent an email to the fx2lib mailing list that I thought would make good information for a bigger audience. Eventually, I’ll probably provide a Verilog behavioral model for the GPIF on the Cy7C68013 (and variants), but for now, this may help a few of you: Rdy0,1, txpire etc, are registered (The data 7:0 is [...]

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I’ve uploaded documentation and a source download for fx2lib. Here is the copy of the Sourceforge announcement. The fx2lib sources are stable enough to build complete firmware implementations for the cypress fx/fx2 variants of the 8051 chipset. The current release includes library functions for: delay functions endpoint functions register definitions type definitions macros for common [...]

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After playing around with the Cypress FX2 and SDCC for the past while, I’ve developed a library of utilities that make some of the common tasks for writing firmware and performing certain functions a little easier. I’m lucky to work for a company that approves of the open source initiative and believes that it is [...]

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