On 15 Jun 2009, at 15:10, Vansickle, Greg wrote:
With the write / read in place, although the write appears to work (numbytes returns 5), the photometer does not respond (I get no "REMOTE" indication on the instrument panel. The subsequent read fails (returns -1).
This indicates that an error is occurring when you try to read from the device. What shows up in errno when this occurs?
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