static void stabilizerTask(void* param) { uint32_t lastWakeTime; vTaskSetApplicationTaskTag(0, (void*)TASK_STABILIZER_ID_NBR); //Wait for the system to be fully started to start stabilization loop systemWaitStart(); lastWakeTime = xTaskGetTickCount (); while(1) { vTaskDelayUntil(&lastWakeTime, F2T(IMU_UPDATE_FREQ)); // Magnetometer not yet used more then for logging. imu9Read(&gyro, &acc, &mag); if (imu6IsCalibrated()) { commanderGetRPY(&rollDesired, &pitchDesired, &yawDesired); sensfusion6UpdateQ(gyro.x, gyro.y, gyro.z, acc.x, acc.y, acc.z, FUSION_UPDATE_DT); sensfusion6GetEulerRPY(&eulerRollActual, &eulerPitchActual, &eulerYawActual); if (horizonMode) { horizonPID(eulerRollActual, eulerPitchActual, -gyro.z, rollDesired, pitchDesired, yawDesired); } else { ratePID(gyro.x, -gyro.y, -gyro.z, rollDesired, pitchDesired, yawDesired); } controllerGetActuatorOutput(&actuatorRoll, &actuatorPitch, &actuatorYaw); commanderGetThrust(&actuatorThrust); /* Call out before performing thrust updates, if any functions would like to influence the thrust. */ if (armed) { distributePower(actuatorThrust, actuatorRoll, actuatorPitch, actuatorYaw); } else { distributePower(0, 0, 0, 0); controllerResetAllPID(); } } } }
void sensorsAcquire(sensorData_t *sensors, const uint32_t tick) { if (RATE_DO_EXECUTE(IMU_RATE, tick)) { imu9Read(&sensors->gyro, &sensors->acc, &sensors->mag); } if (RATE_DO_EXECUTE(BARO_RATE, tick) && imuHasBarometer()) { #ifdef PLATFORM_CF1 ms5611GetData(&sensors->baro.pressure, &sensors->baro.temperature, &sensors->baro.asl); #else lps25hGetData(&sensors->baro.pressure, &sensors->baro.temperature, &sensors->baro.asl); #endif // Experimental: receive the position from parameters if (position.timestamp) { sensors->position = position; } } }
static void stabilizerTask(void* param) { uint32_t attitudeCounter = 0; uint32_t altHoldCounter = 0; uint32_t lastWakeTime; vTaskSetApplicationTaskTag(0, (void*) TASK_STABILIZER_ID_NBR); //Wait for the system to be fully started to start stabilization loop systemWaitStart(); lastWakeTime = xTaskGetTickCount(); while (1) { vTaskDelayUntil(&lastWakeTime, F2T(IMU_UPDATE_FREQ)); // 500Hz // Magnetometer not yet used more then for logging. imu9Read(&gyro, &acc, &mag); if (imu6IsCalibrated()) { commanderGetRPY(&eulerRollDesired, &eulerPitchDesired, &eulerYawDesired); commanderGetRPYType(&rollType, &pitchType, &yawType); // 250HZ if (++attitudeCounter >= ATTITUDE_UPDATE_RATE_DIVIDER) { sensfusion6UpdateQ(gyro.x, gyro.y, gyro.z, acc.x, acc.y, acc.z, FUSION_UPDATE_DT); sensfusion6GetEulerRPY(&eulerRollActual, &eulerPitchActual, &eulerYawActual); accWZ = sensfusion6GetAccZWithoutGravity(acc.x, acc.y, acc.z); accMAG = (acc.x * acc.x) + (acc.y * acc.y) + (acc.z * acc.z); // Estimate speed from acc (drifts) vSpeed += deadband(accWZ, vAccDeadband) * FUSION_UPDATE_DT; controllerCorrectAttitudePID(eulerRollActual, eulerPitchActual, eulerYawActual, eulerRollDesired, eulerPitchDesired, -eulerYawDesired, &rollRateDesired, &pitchRateDesired, &yawRateDesired); attitudeCounter = 0; } // 100HZ if (imuHasBarometer() && (++altHoldCounter >= ALTHOLD_UPDATE_RATE_DIVIDER)) { stabilizerAltHoldUpdate(); altHoldCounter = 0; } if (rollType == RATE) { rollRateDesired = eulerRollDesired; } if (pitchType == RATE) { pitchRateDesired = eulerPitchDesired; } if (yawType == RATE) { yawRateDesired = -eulerYawDesired; } // TODO: Investigate possibility to subtract gyro drift. controllerCorrectRatePID(gyro.x, -gyro.y, gyro.z, rollRateDesired, pitchRateDesired, yawRateDesired); controllerGetActuatorOutput(&actuatorRoll, &actuatorPitch, &actuatorYaw); if (!altHold || !imuHasBarometer()) { // Use thrust from controller if not in altitude hold mode commanderGetThrust(&actuatorThrust); } else { // Added so thrust can be set to 0 while in altitude hold mode after disconnect commanderWatchdog(); } if (actuatorThrust > 0) { #if defined(TUNE_ROLL) distributePower(actuatorThrust, actuatorRoll, 0, 0); #elif defined(TUNE_PITCH) distributePower(actuatorThrust, 0, actuatorPitch, 0); #elif defined(TUNE_YAW) distributePower(actuatorThrust, 0, 0, -actuatorYaw); #else distributePower(actuatorThrust, actuatorRoll, actuatorPitch, -actuatorYaw); #endif } else { distributePower(0, 0, 0, 0); controllerResetAllPID(); } } } }