reading riseing and falling Data/Clock, pulses????

$WMc%

Hello all

·What I'm trying to do is read two 24 bit words. this is LSB 1st a 55uSec delay for the start then the 24 bit "Data" steam,Then comes a 55uSec stop,And then a 55uSec start for the next 24bit Word then a 55uSec stop time. The Freq. is around 80kHz

· My real ? is what statement would I use to look for the rising edge of A Data or Clock pulse
· I also need the falling edge of a clock/Data pulse

·This is in ref. to the I/O pins on the Prop.

·One other remark is the Pv from the device is only 1.5 volts,I plan on useing an O-Amp to get a lil. closer to 3.3volts

_______________$WMc%___________

Mike Green

Read the sections in the Propeller Manual on the WAITPNE and WAITPEQ statements. These look for a particular pin state rather than a change in state, but you use two of them. The first waits for the idle state of the line. The second waits for a change in state (from idle).

$WMc%

Thanks Mr.Green

Thats what I was looking for.


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