Texas Instruments Tiva TM4C123GH6PM

Quadrature Encoder (QEI)
Description:
This returns the current speed of the encoder. The value returned is the number of pulses
detected in the specified time period; this number can be multiplied by the number of time
periods per second and divided by the number of pulses per revolution to obtain the number of
revolutions per second.
Returns:
Returns the number of pulses captured in the given time period.
184 April 8, 2013