SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
In Figure 12-2207 the ECAP operating mode is almost the same as in the previous section except capture events are qualified as either rising or falling edge, this now gives both period and duty cycle information: Period1 = t3 – t1, Period2 = t5 – t3, …etc. Duty Cycle1 (on-time %) = (t2 – t1) / Period1 x 100%, etc. Duty Cycle1 (off-time %) = (t3 – t2) / Period1 x 100%, etc.
Register | Bit | Value |
---|---|---|
ECCTL1 | CAP1POL | EC_RISING |
ECCTL1 | CAP2POL | EC_FALLING |
ECCTL1 | CAP3POL | EC_RISING |
ECCTL1 | CAP4POL | EC_FALLING |
ECCTL1 | CTRRST1 | EC_ABS_MODE |
ECCTL1 | CTRRST2 | EC_ABS_MODE |
ECCTL1 | CTRRST3 | EC_ABS_MODE |
ECCTL1 | CTRRST4 | EC_ABS_MODE |
ECCTL1 | CAPLDEN | EC_ENABLE |
ECCTL1 | PRESCALE | EC_DIV1 |
ECCTL2 | CAP_APWM | EC_CAP_MODE |
ECCTL2 | CONT_ONESHT | EC_CONTINUOUS |
ECCTL2 | SYNCO_SEL | EC_SYNCO_DIS |
ECCTL2 | SYNCI_EN | EC_DISABLE |
ECCTL2 | TSCTRSTOP | EC_RUN |