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Compass calibration improvements

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- fix orientation vectors based on acceleration from calibration
- re-zero calibration data after running calibration to start fresh on next calibration
This commit is contained in:
Dan Welch 2024-12-26 10:34:29 -07:00
parent ba0b98b371
commit 3d92c379f6
3 changed files with 85 additions and 42 deletions
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41
src/motion/BMX160Sensor.cpp
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@ -16,12 +16,22 @@ bool BMX160Sensor::init()
if (sensor.begin()) {
// set output data rate
sensor.ODR_Config(BMX160_ACCEL_ODR_100HZ, BMX160_GYRO_ODR_100HZ);
sensor.setGyroRange(eGyroRange_500DPS);
sensor.setAccelRange(eAccelRange_2G);
// default location for the BMX160 is on the rear of the board with Z negative
sensorConfig.orientation.x = -1;
sensorConfig.orientation.y = -1;
sensorConfig.orientation.z = 1;
loadState();
LOG_INFO("BMX160 load calibration min_x: %.4f, max_X: %.4f, min_Y: %.4f, max_Y: %.4f, min_Z: %.4f, max_Z: %.4f",
sensorConfig.mAccel.min.x, sensorConfig.mAccel.max.x, sensorConfig.mAccel.min.y, sensorConfig.mAccel.max.y,
sensorConfig.mAccel.min.z, sensorConfig.mAccel.max.z);
LOG_INFO("BMX160 MAG calibration center_x: %.4f, center_Y: %.4f, center_Z: %.4f", sensorConfig.mAccel.x,
sensorConfig.mAccel.y, sensorConfig.mAccel.z);
LOG_INFO("BMX160 GYRO calibration center_x: %.4f, center_Y: %.4f, center_Z: %.4f", sensorConfig.gyroAccel.x,
sensorConfig.gyroAccel.y, sensorConfig.gyroAccel.z);
LOG_INFO("BMX160 ORIENT calibration: x=%i, y=%i, z=%i", sensorConfig.orientation.x, sensorConfig.orientation.y,
sensorConfig.orientation.z);
return true;
}
@ -47,24 +57,26 @@ int32_t BMX160Sensor::runOnce()
getGyroCalibrationData(gyroAccel.x, gyroAccel.y, gyroAccel.z, gAccel.x, gAccel.y, gAccel.z);
}
int highestRealX = sensorConfig.mAccel.max.x - (sensorConfig.mAccel.max.x + sensorConfig.mAccel.min.x) / 2;
// int highestRealX = sensorConfig.mAccel.max.x - (sensorConfig.mAccel.max.x + sensorConfig.mAccel.min.x) / 2;
magAccel.x -= sensorConfig.mAccel.x;
magAccel.y -= sensorConfig.mAccel.y;
magAccel.z -= sensorConfig.mAccel.z;
magAccel.x -= (sensorConfig.mAccel.max.x + sensorConfig.mAccel.min.x) / 2;
magAccel.y -= (sensorConfig.mAccel.max.y + sensorConfig.mAccel.min.y) / 2;
magAccel.z -= (sensorConfig.mAccel.max.z + sensorConfig.mAccel.min.z) / 2;
FusionVector ga, ma;
ga.axis.x = gAccel.x * sensorConfig.orientation.x; // default location for the BMX160 is on the rear of the board
ga.axis.x = gAccel.x * sensorConfig.orientation.x;
ga.axis.y = gAccel.y * sensorConfig.orientation.y;
ga.axis.z = gAccel.z * sensorConfig.orientation.z;
ma.axis.x = magAccel.x * sensorConfig.orientation.x;
ma.axis.y = magAccel.y * sensorConfig.orientation.y;
ma.axis.z = magAccel.z * sensorConfig.orientation.z * 3;
// Use calibration orientation instead of swap based on CompassOrientation definition
// If we're set to one of the inverted positions
if (config.display.compass_orientation > meshtastic_Config_DisplayConfig_CompassOrientation_DEGREES_270) {
ma = FusionAxesSwap(ma, FusionAxesAlignmentNXNYPZ);
ga = FusionAxesSwap(ga, FusionAxesAlignmentNXNYPZ);
}
// if (config.display.compass_orientation > meshtastic_Config_DisplayConfig_CompassOrientation_DEGREES_270) {
// ma = FusionAxesSwap(ma, FusionAxesAlignmentNXNYPZ);
// ga = FusionAxesSwap(ga, FusionAxesAlignmentNXNYPZ);
// }
float heading = FusionCompassCalculateHeading(FusionConventionNed, ga, ma);
@ -86,6 +98,11 @@ int32_t BMX160Sensor::runOnce()
break;
}
// LOG_DEBUG("MAG Sensor Data: X=%.4f, Y=%.4f, Z=%.4f", magAccel.x, magAccel.y, magAccel.z);
// LOG_DEBUG("ACCEL Sensor Data: X=%.4f, Y=%.4f, Z=%.4f", gAccel.x, gAccel.y, gAccel.z);
// LOG_DEBUG("HEADING Sensor Data: %.1f deg", heading);
// LOG_DEBUG("Gyro Sensor Data: X=%.4f, Y=%.4f, Z=%.4f", gyroAccel.x, gyroAccel.y, gyroAccel.z);
screen->setHeading(heading);
#endif

83
src/motion/MotionSensor.cpp
View File

@ -66,7 +66,7 @@ void MotionSensor::drawFrameGyroWarning(OLEDDisplay *display, OLEDDisplayUiState
// int y_offset = display->height() <= 80 ? 0 : 32;
display->setTextAlignment(TEXT_ALIGN_LEFT);
display->setFont(FONT_SMALL);
display->drawString(x, y, "Place Screen Face Up\nPointing North\nKeep Still");
display->drawString(x, y, "Place Screen Face Up\n& Keep Still");
uint8_t timeRemaining = (screen->getEndCalibration() - millis()) / 1000;
sprintf(timeRemainingBuffer, "Starting in ( %02d )", timeRemaining);
@ -120,32 +120,42 @@ void MotionSensor::getMagCalibrationData(float x, float y, float z)
}
if (firstCalibrationRead) {
sensorConfig.mAccel.min.x = x;
sensorConfig.mAccel.max.x = x;
sensorConfig.mAccel.min.y = y;
sensorConfig.mAccel.max.y = y;
sensorConfig.mAccel.min.z = z;
sensorConfig.mAccel.max.z = z;
magCalibrationMinMax.min.x = x;
magCalibrationMinMax.max.x = x;
magCalibrationMinMax.min.y = y;
magCalibrationMinMax.max.y = y;
magCalibrationMinMax.min.z = z;
magCalibrationMinMax.max.z = z;
firstCalibrationRead = false;
} else {
if (x > sensorConfig.mAccel.max.x)
sensorConfig.mAccel.max.x = x;
if (x < sensorConfig.mAccel.min.x)
sensorConfig.mAccel.min.x = x;
if (y > sensorConfig.mAccel.max.y)
sensorConfig.mAccel.max.y = y;
if (y < sensorConfig.mAccel.min.y)
sensorConfig.mAccel.min.y = y;
if (z > sensorConfig.mAccel.max.z)
sensorConfig.mAccel.max.z = z;
if (z < sensorConfig.mAccel.min.z)
sensorConfig.mAccel.min.z = z;
if (x > magCalibrationMinMax.max.x)
magCalibrationMinMax.max.x = x;
if (x < magCalibrationMinMax.min.x)
magCalibrationMinMax.min.x = x;
if (y > magCalibrationMinMax.max.y)
magCalibrationMinMax.max.y = y;
if (y < magCalibrationMinMax.min.y)
magCalibrationMinMax.min.y = y;
if (z > magCalibrationMinMax.max.z)
magCalibrationMinMax.max.z = z;
if (z < magCalibrationMinMax.min.z)
magCalibrationMinMax.min.z = z;
}
uint32_t now = millis();
if (now > endMagCalibrationAt) {
sensorConfig.mAccel.x = (magCalibrationMinMax.max.x + magCalibrationMinMax.min.x) / 2;
sensorConfig.mAccel.y = (magCalibrationMinMax.max.y + magCalibrationMinMax.min.y) / 2;
sensorConfig.mAccel.z = (magCalibrationMinMax.max.z + magCalibrationMinMax.min.z) / 2;
doMagCalibration = false;
endMagCalibrationAt = 0;
magCalibrationMinMax.min.x = 0;
magCalibrationMinMax.max.x = 0;
magCalibrationMinMax.min.y = 0;
magCalibrationMinMax.max.y = 0;
magCalibrationMinMax.min.z = 0;
magCalibrationMinMax.max.z = 0;
showingScreen = false;
screen->endAlert();
@ -221,32 +231,38 @@ void MotionSensor::getGyroCalibrationData(float g_x, float g_y, float g_z, float
// determine orientation multipliers based on down direction
if (abs(accelCalibrationSum.x) > abs(accelCalibrationSum.y) && abs(accelCalibrationSum.x) > abs(accelCalibrationSum.z)) {
if (accelCalibrationSum.x >= 0) {
// X axis oriented with down positive
sensorConfig.orientation.x = 1;
sensorConfig.orientation.y = 1;
sensorConfig.orientation.z = 1;
} else {
// X axis oriented with down negative
sensorConfig.orientation.x = 1;
sensorConfig.orientation.y = 1;
sensorConfig.orientation.z = 1;
sensorConfig.orientation.y = -1;
sensorConfig.orientation.z = -1;
}
} else if (abs(accelCalibrationSum.y) > abs(accelCalibrationSum.x) &&
abs(accelCalibrationSum.y) > abs(accelCalibrationSum.z)) {
if (accelCalibrationSum.y >= 0) {
// Y axis oriented with down positive
sensorConfig.orientation.x = 1;
sensorConfig.orientation.y = 1;
sensorConfig.orientation.z = 1;
} else {
sensorConfig.orientation.x = 1;
// Y axis oriented with down negative
sensorConfig.orientation.x = -1;
sensorConfig.orientation.y = 1;
sensorConfig.orientation.z = 1;
sensorConfig.orientation.z = -1;
}
} else if (abs(accelCalibrationSum.z) > abs(accelCalibrationSum.x) &&
abs(accelCalibrationSum.z) > abs(accelCalibrationSum.y)) {
if (accelCalibrationSum.z >= 0) {
sensorConfig.orientation.x = -1;
sensorConfig.orientation.y = -1;
sensorConfig.orientation.z = -1;
// Z axis oriented with down positive
sensorConfig.orientation.x = 1;
sensorConfig.orientation.y = 1;
sensorConfig.orientation.z = 1;
} else {
// Z axis oriented with down negative
sensorConfig.orientation.x = -1;
sensorConfig.orientation.y = -1;
sensorConfig.orientation.z = 1;
@ -261,6 +277,12 @@ void MotionSensor::getGyroCalibrationData(float g_x, float g_y, float g_z, float
saveState();
doGyroCalibration = false;
endGyroCalibrationAt = 0;
accelCalibrationSum.x = 0;
accelCalibrationSum.y = 0;
accelCalibrationSum.z = 0;
gyroCalibrationSum.x = 0;
gyroCalibrationSum.y = 0;
gyroCalibrationSum.z = 0;
showingScreen = false;
screen->endAlert();
}
@ -290,9 +312,12 @@ void MotionSensor::saveState()
#ifdef FSCom
memcpy(&sensorState, &sensorConfig, sizeof(SensorConfig));
LOG_INFO("Motion Sensor save calibration min_x: %.4f, max_X: %.4f, min_Y: %.4f, max_Y: %.4f, min_Z: %.4f, max_Z: %.4f",
sensorConfig.mAccel.min.x, sensorConfig.mAccel.max.x, sensorConfig.mAccel.min.y, sensorConfig.mAccel.max.y,
sensorConfig.mAccel.min.z, sensorConfig.mAccel.max.z);
LOG_INFO("Save MAG calibration center_x: %.4f, center_Y: %.4f, center_Z: %.4f", sensorConfig.mAccel.x, sensorConfig.mAccel.y,
sensorConfig.mAccel.z);
LOG_INFO("Save GYRO calibration center_x: %.4f, center_Y: %.4f, center_Z: %.4f", sensorConfig.gyroAccel.x,
sensorConfig.gyroAccel.y, sensorConfig.gyroAccel.z);
LOG_INFO("Save ORIENT calibration: x=%i, y=%i, z=%i", sensorConfig.orientation.x, sensorConfig.orientation.y,
sensorConfig.orientation.z);
if (FSCom.exists(configFileName) && !FSCom.remove(configFileName)) {
LOG_WARN("Can't remove old Motion Sensor config state file");

3
src/motion/MotionSensor.h
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@ -34,7 +34,7 @@ struct minMaxXYZ {
xyzFloat max;
};
struct SensorConfig {
minMaxXYZ mAccel;
xyzFloat mAccel;
xyzFloat gyroAccel;
// xyzFloat gAccel;
xyzInt orientation;
@ -93,6 +93,7 @@ class MotionSensor
uint32_t endGyroCalibrationAt = 0;
xyzFloat gyroCalibrationSum;
xyzInt accelCalibrationSum;
minMaxXYZ magCalibrationMinMax;
uint16_t calibrationCount = 0;
void getMagCalibrationData(float x, float y, float z);