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Code Issues Releases Activity

backport of complementary filter bugfix

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This commit is contained in:
Corvus Corax 2013-06-23 18:37:43 +02:00
parent 00a603c88f
commit 407817f959
1 changed files with 8 additions and 2 deletions
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10
flight/modules/StateEstimation/filtercf.c
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@ -62,6 +62,7 @@ struct data {
bool accel_filter_enabled;
float rollPitchBiasRate;
int32_t timeval;
int32_t starttime;
uint8_t init;
bool magCalibrated;
};
@ -267,11 +268,16 @@ static int32_t complementaryFilter(struct data *this, float gyro[3], float accel
this->first_run = 0;
this->timeval = PIOS_DELAY_GetRaw();
this->starttime = this->timeval;
return 0;
return 0; // must return zero on initial initialization, so attitude will init with a valid quaternion
}
if ((this->init == 0 && xTaskGetTickCount() < 10000) && (xTaskGetTickCount() > 4000)) {
if (this->init == 0 && PIOS_DELAY_DiffuS(this->starttime) < 4000000) {
// wait 4 seconds for the user to get his hands off in case the board was just powered
this->timeval = PIOS_DELAY_GetRaw();
return 1;
} else if (this->init == 0 && PIOS_DELAY_DiffuS(this->starttime) < 10000000 && PIOS_DELAY_DiffuS(this->starttime) >= 4000000) {
// For first 7 seconds use accels to get gyro bias
this->attitudeSettings.AccelKp = 1.0f;
this->attitudeSettings.AccelKi = 0.0f;