static void loop()
{
static const uint8_t compass_count = compass.get_count();
static float min[COMPASS_MAX_INSTANCES][3];
static float max[COMPASS_MAX_INSTANCES][3];
static float offset[COMPASS_MAX_INSTANCES][3];
compass.accumulate();
if ((AP_HAL::micros() - timer) > 100000L) {
timer = AP_HAL::micros();
compass.read();
unsigned long read_time = AP_HAL::micros() - timer;
for (uint8_t i = 0; i < compass_count; i++) {
float heading;
hal.console->printf("Compass #%u: ", i);
if (!compass.healthy()) {
hal.console->println("not healthy");
continue;
}
Matrix3f dcm_matrix;
// use roll = 0, pitch = 0 for this example
dcm_matrix.from_euler(0, 0, 0);
heading = compass.calculate_heading(dcm_matrix, i);
compass.learn_offsets();
const Vector3f &mag = compass.get_field(i);
// capture min
min[i][0] = MIN(mag.x, min[i][0]);
min[i][1] = MIN(mag.y, min[i][1]);
min[i][2] = MIN(mag.z, min[i][2]);
// capture max
max[i][0] = MAX(mag.x, max[i][0]);
max[i][1] = MAX(mag.y, max[i][1]);
max[i][2] = MAX(mag.z, max[i][2]);
// calculate offsets
offset[i][0] = -(max[i][0] + min[i][0]) / 2;
offset[i][1] = -(max[i][1] + min[i][1]) / 2;
offset[i][2] = -(max[i][2] + min[i][2]) / 2;
// display all to user
hal.console->printf("Heading: %.2f (%3d,%3d,%3d)",
ToDeg(heading),
(int)mag.x,
(int)mag.y,
(int)mag.z);
// display offsets
hal.console->printf(" offsets(%.2f, %.2f, %.2f)",
offset[i][0], offset[i][1], offset[i][2]);
hal.console->printf(" t=%u", (unsigned)read_time);
hal.console->println();
}
} else {
hal.scheduler->delay(1);
}
}
void loop()
{
static float min[3], max[3], offset[3];
compass.accumulate();
if((AP_HAL::micros()- timer) > 100000L)
{
timer = AP_HAL::micros();
compass.read();
unsigned long read_time = AP_HAL::micros() - timer;
float heading;
if (!compass.healthy()) {
hal.console->println("not healthy");
return;
}
Matrix3f dcm_matrix;
// use roll = 0, pitch = 0 for this example
dcm_matrix.from_euler(0, 0, 0);
heading = compass.calculate_heading(dcm_matrix);
compass.learn_offsets();
// capture min
const Vector3f &mag = compass.get_field();
if( mag.x < min[0] )
min[0] = mag.x;
if( mag.y < min[1] )
min[1] = mag.y;
if( mag.z < min[2] )
min[2] = mag.z;
// capture max
if( mag.x > max[0] )
max[0] = mag.x;
if( mag.y > max[1] )
max[1] = mag.y;
if( mag.z > max[2] )
max[2] = mag.z;
// calculate offsets
offset[0] = -(max[0]+min[0])/2;
offset[1] = -(max[1]+min[1])/2;
offset[2] = -(max[2]+min[2])/2;
// display all to user
hal.console->printf("Heading: %.2f (%3d,%3d,%3d) i2c error: %u",
ToDeg(heading),
(int)mag.x,
(int)mag.y,
(int)mag.z,
(unsigned)hal.i2c->lockup_count());
// display offsets
hal.console->printf(" offsets(%.2f, %.2f, %.2f)",
offset[0], offset[1], offset[2]);
hal.console->printf(" t=%u", (unsigned)read_time);
hal.console->println();
} else {
hal.scheduler->delay(1);
}
}