On Sat, 25 Oct 2008, Piclist Vanzo wrote:

> I use it to write and read floats to an external eeprom via I2C.
> Everthing is fine if I already have data on the eeprom. But with a new 
> one it reads NaN (not a number) and I don't
> have no idea of how to detect it.
> Would like to check on setup and put in all 0x0000.

I haven't used C30 but you might find something like "isnan" in math.h.

so you would do something like:

	_long.data = HDReadI2CFloat(ControlByte, HighAdd, LowAdd);

	if (isnan(_long.data))
	{
		_long.data = 0;
	}

if there is no "isnan" you could instead try:

	if (_long.data != _long.data)

Regards
Sergio Masci
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