AT91SAM9G20 floating point co-processor?

Development Boards MicroMod
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We are using the AT91SAM9G20 for a school project. We bumped into a problem as we need to support hardware floating point, and the AT91SAM9G20 does not.

However, we know that the processor in the microcontroller (ARM926EJ-S) does support a floating point co-processor.

Also, in the AT91SG20 datasheet it says that it supports SPI co-processor. Has anyone here used this chip or done something similar? Would it be safe for us to order the uM-FPU v3.1 here at Sparkfun and assume that it will work?

Thanks for any answers :slight_smile:

datasheet for AT91SG20: http://www.keil.com/dd/docs/datashts/at … g20_ds.pdf

Floating Point Co-Processor http://www.sparkfun.com/commerce/produc … ts_id=8129

Edit: Sorry. I guess i should have moved this to the ARM section, as this atmel chip is not AVR but uses the ARM9 processor. I will repost it there :slight_smile:

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I have used the uM-FPU v3.1 on one project. Once you get a good understanding of how to program it, it was easy.

It is limited in it’s precision. I have found that sending my data to a PC and having it do calculations was better. But for embedded solutions it works very well. Their support forums are pretty good if you need help.

Bryan

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Thanks. Now we are looking for a replacement for the Fox Board G20 we where supposed to use. But it’s difficult to find something with ~300 mhz and floating point in a ready to go prototype board.