diff options
Diffstat (limited to 'src/drivers/ets_airspeed/ets_airspeed.cpp')
| -rw-r--r-- | src/drivers/ets_airspeed/ets_airspeed.cpp | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/src/drivers/ets_airspeed/ets_airspeed.cpp b/src/drivers/ets_airspeed/ets_airspeed.cpp index f98d615a2..0f77bb805 100644 --- a/src/drivers/ets_airspeed/ets_airspeed.cpp +++ b/src/drivers/ets_airspeed/ets_airspeed.cpp @@ -155,7 +155,6 @@ ETSAirspeed::collect() } uint16_t diff_pres_pa_raw = val[1] << 8 | val[0]; - uint16_t diff_pres_pa; if (diff_pres_pa_raw == 0) { // a zero value means the pressure sensor cannot give us a // value. We need to return, and not report a value or the @@ -166,28 +165,21 @@ ETSAirspeed::collect() return -1; } - if (diff_pres_pa_raw < _diff_pres_offset + MIN_ACCURATE_DIFF_PRES_PA) { - diff_pres_pa = 0; - } else { - diff_pres_pa = diff_pres_pa_raw - _diff_pres_offset; - } - // The raw value still should be compensated for the known offset diff_pres_pa_raw -= _diff_pres_offset; // Track maximum differential pressure measured (so we can work out top speed). - if (diff_pres_pa > _max_differential_pressure_pa) { - _max_differential_pressure_pa = diff_pres_pa; + if (diff_pres_pa_raw > _max_differential_pressure_pa) { + _max_differential_pressure_pa = diff_pres_pa_raw; } differential_pressure_s report; report.timestamp = hrt_absolute_time(); report.error_count = perf_event_count(_comms_errors); - report.differential_pressure_pa = (float)diff_pres_pa; // XXX we may want to smooth out the readings to remove noise. - report.differential_pressure_filtered_pa = (float)diff_pres_pa; - report.differential_pressure_raw_pa = (float)diff_pres_pa_raw; + report.differential_pressure_filtered_pa = diff_pres_pa_raw; + report.differential_pressure_raw_pa = diff_pres_pa_raw; report.temperature = -1000.0f; report.max_differential_pressure_pa = _max_differential_pressure_pa; @@ -369,7 +361,7 @@ test() err(1, "immediate read failed"); warnx("single read"); - warnx("diff pressure: %f pa", (double)report.differential_pressure_pa); + warnx("diff pressure: %f pa", (double)report.differential_pressure_filtered_pa); /* start the sensor polling at 2Hz */ if (OK != ioctl(fd, SENSORIOCSPOLLRATE, 2)) @@ -394,7 +386,7 @@ test() err(1, "periodic read failed"); warnx("periodic read %u", i); - warnx("diff pressure: %f pa", (double)report.differential_pressure_pa); + warnx("diff pressure: %f pa", (double)report.differential_pressure_filtered_pa); } /* reset the sensor polling to its default rate */ |