FPUcp Help

Yojimbo

I am attempting to use my FPU v2, but first I need to get it in! I attached it using the I2C configuration but it doesn't seem to be responding to the mathfpu demo programs (the data pin and clock pin at correctly set). I'm still new so this is probably due to incompetence. I have 6 wires coming from the chip on the bread board (4 pins on each side of the cannal). Pins 1 & 8 are going to Vdd. 7 & 4 are going to Vss, pins 5 & 3 are going to data and clock @ pins 14 and 15 respectivly on the javelin. The last two pins 6 & 2 are not used. Is this set up properly? It doesnt seem to respond to a reset command, or any for that matter. Thanks for your time.

-Sean

dandreae

Are you able use the SPI set up?· The reason I ask is, to check to see if the chip is okay?

Dave



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Dave Andreae

Tech Support
dandreae@parallax.com
Http://www.parallax.com

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Yojimbo

I'll give it a go, though I don't think I fully understand the advantage of one set up or the other.

Yojimbo

well, I used the SPI configuration with the math demo programs, but it doesn't seem to work...no response from the FPU. Are they faulty often or would it be worth it to mess around a bit more?

dandreae

I suggest trying different I/O pins on the Javelin Stamp and make sure to change the code accordingly.· As with most electronic components you need to make sure that you practice ESD when handling them.· If this doesn't solve your issue, please contact Parallax's tech support (1-888-997-8267)·providing you purchased the chip (FPU)·from Parallax and we'll see what we can do?

Dave

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Dave Andreae

Tech Support
dandreae@parallax.com
Http://www.parallax.com

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