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RM0312 数据表(PDF) 142 Page - STMicroelectronics |
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RM0312 数据表(HTML) 142 Page - STMicroelectronics |
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142 / 275 page  16-bit general purpose timer (TIM2/TIM3) RM0312 142/275 DocID022352 Rev 3 Figure 62. Example of counter operation in encoder interface mode Figure 63 gives an example of counter behaviour when IC1 polarity is inverted (same configuration as above except CC1P=’1’). Figure 63. Example of encoder interface mode with IC1 polarity inverted The timer, when configured in Encoder Interface mode provides information on the sensor’s current position. You can obtain dynamic information (speed, acceleration, decceleration) 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. You 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). TI1 forward forward backward jitter jitter up down up TI2 COUNTER TI1 forward forward backward jitter jitter up down TI2 COUNTER down |
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