PPS_ECHOASSERT
sc->pps[0].ppscap = PPS_CAPTUREASSERT | PPS_ECHOASSERT;
if (sc->pps[0].ppsparam.mode & PPS_ECHOASSERT)
if (sc->pps[0].ppsparam.mode & PPS_ECHOASSERT)
pp.mode |= PPS_ECHOASSERT;
if (mode & PPS_ECHOASSERT)