On May 13, 2007, at 5:01 PM, Hugo Sousa wrote:
Hi Fangming,
You don't have to wait for a readDone() to read the other, you can
call both Reads because accelconfigp has an arbiter that prevents
simultaneous access. It is also better that you call them both
because that way the sensor is not turned off between the two
readings, doubling your maximum sample frequency. That's 60Hz, not
quite the 64Hz you want
This is correct; in T2, the best way to sample multiple sensors is to
request all of them at once. In this case, "best" means "most power
efficient" and "fastest." Basically, by issuing a bunch of parallel
calls to the OS, you give it the flexibility to automatically
schedule I/O as efficiently as possible.
Phil
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