SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
In Figure 12-168 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 |