diff options
Diffstat (limited to 'src/modules/sensors/sensors.cpp')
| -rw-r--r-- | src/modules/sensors/sensors.cpp | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/src/modules/sensors/sensors.cpp b/src/modules/sensors/sensors.cpp index c40e52a0d..6bafb9ba6 100644 --- a/src/modules/sensors/sensors.cpp +++ b/src/modules/sensors/sensors.cpp @@ -248,7 +248,7 @@ private: float accel_offset[3]; float accel_scale[3]; float diff_pres_offset_pa; - float diff_pres_analog_enabled; + float diff_pres_analog_scale; int board_rotation; int external_mag_rotation; @@ -311,7 +311,7 @@ private: param_t mag_offset[3]; param_t mag_scale[3]; param_t diff_pres_offset_pa; - param_t diff_pres_analog_enabled; + param_t diff_pres_analog_scale; param_t rc_map_roll; param_t rc_map_pitch; @@ -501,6 +501,7 @@ Sensors::Sensors() : _battery_current_timestamp(0) { memset(&_rc, 0, sizeof(_rc)); + memset(&_diff_pres, 0, sizeof(_diff_pres)); /* basic r/c parameters */ for (unsigned i = 0; i < _rc_max_chan_count; i++) { @@ -590,7 +591,7 @@ Sensors::Sensors() : /* Differential pressure offset */ _parameter_handles.diff_pres_offset_pa = param_find("SENS_DPRES_OFF"); - _parameter_handles.diff_pres_analog_enabled = param_find("SENS_DPRES_ANA"); + _parameter_handles.diff_pres_analog_scale = param_find("SENS_DPRES_ANSC"); _parameter_handles.battery_voltage_scaling = param_find("BAT_V_SCALING"); _parameter_handles.battery_current_scaling = param_find("BAT_C_SCALING"); @@ -798,7 +799,7 @@ Sensors::parameters_update() /* Airspeed offset */ param_get(_parameter_handles.diff_pres_offset_pa, &(_parameters.diff_pres_offset_pa)); - param_get(_parameter_handles.diff_pres_analog_enabled, &(_parameters.diff_pres_analog_enabled)); + param_get(_parameter_handles.diff_pres_analog_scale, &(_parameters.diff_pres_analog_scale)); /* scaling of ADC ticks to battery voltage */ if (param_get(_parameter_handles.battery_voltage_scaling, &(_parameters.battery_voltage_scaling)) != OK) { @@ -1323,22 +1324,23 @@ Sensors::adc_poll(struct sensor_combined_s &raw) } else if (ADC_AIRSPEED_VOLTAGE_CHANNEL == buf_adc[i].am_channel) { /* calculate airspeed, raw is the difference from */ - float voltage = (float)(buf_adc[i].am_data) * 3.3f / 4096.0f * 2.0f; //V_ref/4096 * (voltage divider factor) + float voltage = (float)(buf_adc[i].am_data) * 3.3f / 4096.0f * 2.0f; // V_ref/4096 * (voltage divider factor) /** * The voltage divider pulls the signal down, only act on * a valid voltage from a connected sensor. Also assume a non- * zero offset from the sensor if its connected. */ - if (voltage > 0.4f && (_parameters.diff_pres_analog_enabled > 0)) { + if (voltage > 0.4f && (_parameters.diff_pres_analog_scale > 0.0f)) { - float diff_pres_pa = voltage * 1000.0f - _parameters.diff_pres_offset_pa; //for MPXV7002DP sensor + float diff_pres_pa_raw = voltage * _parameters.diff_pres_analog_scale - _parameters.diff_pres_offset_pa; + float diff_pres_pa = (diff_pres_pa_raw > 0.0f) ? diff_pres_pa_raw : 0.0f; _diff_pres.timestamp = t; _diff_pres.differential_pressure_pa = diff_pres_pa; - _diff_pres.differential_pressure_filtered_pa = diff_pres_pa; + _diff_pres.differential_pressure_raw_pa = diff_pres_pa_raw; + _diff_pres.differential_pressure_filtered_pa = (_diff_pres.differential_pressure_filtered_pa * 0.9f) + (diff_pres_pa * 0.1f); _diff_pres.temperature = -1000.0f; - _diff_pres.voltage = voltage; /* announce the airspeed if needed, just publish else */ if (_diff_pres_pub > 0) { |