Figure 147. Example Of Counter Operation In Encoder Interface Mode; Figure 148. Example Of Encoder Interface Mode With Ti1Fp1 Polarity Inverted - ST STM32F207 Series Reference Manual

Advanced arm-based 32-bit mcus

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General-purpose timers (TIM2 to TIM5)

configuration as above except CC1P=1).

The timer, when configured in Encoder Interface mode provides information on the sensor's

current position. The user can obtain dynamic information (speed, acceleration,

deceleration) by measuring the period between two encoder events using a second timer

configured in capture mode. The output of the encoder which indicates the mechanical zero

can be used for this purpose. Depending on the time between two events, the counter can

also be read at regular times. The user can do this by latching the counter value into a third

input capture register if available (then the capture signal must be periodic and can be

generated by another timer). when available, it is also possible to read its value through a

DMA request generated by a Real-Time clock.

Figure 147. Example of counter operation in encoder interface mode

gives an example of counter behavior when TI1FP1 polarity is inverted (same

RM0033 Rev 9

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