uM-FPU v3.1 Fpu Object definition?

ramman345

Just starting playing with a new micromega uM-FPU v3.1. Using their latest stable release of the FPU IDE (1.3 I think) you can set the target to be a Javelin and it generates Javelin code that you just copy and paste into the Javelin IDE - simple enough. However the generated code uses and "Fpu" object that is never defined. I'm assuming that if I simply copy and paste this into JIDE it won't compile. It seems to be that there should be a library or class file that defines the "Fpu" class and that I should also have to instantiate one and assign pin #'s for the communications. I've search the documentation from micromega with no luck. Any help is greatly appreciated.

ramman345

btw, here's an example of the generated code to add to registers and store to a third.

//

---

Generated Code

---

// F1 = F2 + F3
Fpu.startWrite();
Fpu.write(Fpu.SELECTA, 1, Fpu.FSET, 2);
Fpu.write(Fpu.FADD, 3);

Peter Verkaik

http://www.micromegacorp.com/javelin.html

regards peter

ramman345

Right, but that is all V2 stuff. I have a V3.1.

Peter Verkaik

Send an email to
info@micromegacorp.com

to findout if a v3.1 update is in the make.
Ask if the v2 FPU object can be used with v3.1
(for the v2 features anyway)

Or create your own·using the v3.1 opcodes

http://www.micromegacorp.com/downloads/software/uMFPU-V3-opcodes.zip

regards peter
·

camt

I've attached a zip file that contains a package for interfacing the Javelin to the uM-FPU V3.1 chip using an SPI connection. The folder v3_spi should be copied to ~\lib\com\micromegacorp\math\. A simple demo routine called Graph.java file is also included.

I'll create some more examples next week and update the Javelin support page on the Micromega website located at:
http://www.micromegacorp.com/javelin.html

Regards,
Cam

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Cam Thompson
Micromega Corporation

Peter Verkaik

Thanks Cam.
One thing, the text at the start of Int32.java is identical to the text of Float32.java
(both describing the class: * This class provides support for 32-bit floating point numbers)

I think the text for Int32.java should be different as Int32.java supports 32bit integers.

regards peter

camt

Hi Peter,

Thanks for picking that up (the joys of copy-and-paste to start a new file!) I'll fix the comments when I do additional postings next week.

Regards,
Cam

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Cam Thompson
Micromega Corporation

camt

Documentation and new support software for using uM-FPU V3.1 with the Javelin Stamp has been posted to the Micromega website:
http://www.micromegacorp.com/javelin.html

Regards,
Cam

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Cam Thompson
Micromega Corporation