830fa2b104
git-svn-id: https://arducopter.googlecode.com/svn/trunk@19 f9c3cf11-9bcb-44bc-f272-b75c42450872
682 lines
22 KiB
Plaintext
682 lines
22 KiB
Plaintext
/* ********************************************************************** */
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/* ArduCopter Quadcopter code */
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/* */
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/* Code based on ArduIMU DCM code from Diydrones.com */
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/* (Original ArduIMU code from Jordi Muñoz and William Premerlani) */
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/* Ardupilot core code : from DIYDrones.com development team */
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/* Quadcopter code from AeroQuad project and ArduIMU quadcopter project */
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/* Authors : Jose Julio, Ted Carancho (aeroquad), Jordi Muñoz, */
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/* Roberto Navoni, ... (Arcucopter team) */
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/* Date : 17-06-2010 */
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/* Version : 1.1 beta */
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/* Hardware : ArduPilot Mega + Sensor Shield (Production versions) */
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/* This code use this libraries : */
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/* APM_RC_QUAD : Radio library (adapted for quads) */
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/* APM_ADC : External ADC library */
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/* DataFlash : DataFlash log library */
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/* APM_BMP085 : BMP085 barometer library */
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/* APM_Compass : HMC5843 compass library [optional] */
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/* GPS_UBLOX or GPS_NMEA: GPS library [optional] */
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/* ********************************************************************** */
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#include <Wire.h>
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#include <APM_ADC.h>
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#include <APM_RC_QUAD.h>
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#include <DataFlash.h>
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#include <APM_Compass.h>
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// Put your GPS library here:
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#include <GPS_NMEA.h> // MTK GPS
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/* APM Hardware definitions */
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#define LED_Yellow 36
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#define LED_Red 35
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#define LED_Green 37
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#define RELE_pin 47
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#define SW1_pin 41
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#define SW2_pin 40
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/* *** */
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/* ***************************************************************************** */
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/* CONFIGURATION PART */
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/* ***************************************************************************** */
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//Adjust this parameter for your lattitude
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#define GEOG_CORRECTION_FACTOR 0.87 // cos(lattitude)
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#define RADIO_TEST_MODE 0 // 0:Normal 1:Radio Test mode (to test radio channels)
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#define MAGNETOMETER 1 // 0 : No magnetometer, 1: Magnetometer
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// QuadCopter Attitude control PID GAINS
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#define KP_QUAD_ROLL 1.8 // 1.5 //1.75
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#define KD_QUAD_ROLL 0.48 //0.35 // 0.4 //Absolute max:0.85
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#define KI_QUAD_ROLL 0.30 // 0.4 //0.45
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#define KP_QUAD_PITCH 1.8
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#define KD_QUAD_PITCH 0.48
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#define KI_QUAD_PITCH 0.30 //0.4
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#define KP_QUAD_YAW 3.6 // 3.8
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#define KD_QUAD_YAW 1.2 // 1.3
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#define KI_QUAD_YAW 0.15 // 0.15
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#define KD_QUAD_COMMAND_PART 2.0 // for special KD implementation (in two parts). Higher values makes the quadcopter more responsive to user inputs
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// Position control PID GAINS
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#define KP_GPS_ROLL 0.012
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#define KD_GPS_ROLL 0.005
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#define KI_GPS_ROLL 0.004
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#define KP_GPS_PITCH 0.012
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#define KD_GPS_PITCH 0.005
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#define KI_GPS_PITCH 0.004
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#define GPS_MAX_ANGLE 10 // Maximun command roll and pitch angle from position control
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// Altitude control PID GAINS
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#define KP_ALTITUDE 0.8
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#define KD_ALTITUDE 0.2
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#define KI_ALTITUDE 0.2
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// The IMU should be correctly adjusted : Gyro Gains and also initial IMU offsets:
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// We have to take this values with the IMU flat (0º roll, 0º pitch)
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#define acc_offset_x 2079
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#define acc_offset_y 2050
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#define acc_offset_z 2008 // We need to rotate the IMU exactly 90º to take this value
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#define gyro_offset_roll 1659 //1650
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#define gyro_offset_pitch 1618 //1690
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#define gyro_offset_yaw 1673
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// ADC : Voltage reference 3.3v / 12bits(4096 steps) => 0.8mV/ADC step
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// ADXL335 Sensitivity(from datasheet) => 330mV/g, 0.8mV/ADC step => 330/0.8 = 412
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// Tested value : 408
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#define GRAVITY 408 //this equivalent to 1G in the raw data coming from the accelerometer
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#define Accel_Scale(x) x*(GRAVITY/9.81)//Scaling the raw data of the accel to actual acceleration in meters for seconds square
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#define ToRad(x) (x*0.01745329252) // *pi/180
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#define ToDeg(x) (x*57.2957795131) // *180/pi
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// IDG500 Sensitivity (from datasheet) => 2.0mV/º/s, 0.8mV/ADC step => 0.8/3.33 = 0.4
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// Tested values :
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#define Gyro_Gain_X 0.4 //X axis Gyro gain
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#define Gyro_Gain_Y 0.41 //Y axis Gyro gain
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#define Gyro_Gain_Z 0.41 //Z axis Gyro gain
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#define Gyro_Scaled_X(x) x*ToRad(Gyro_Gain_X) //Return the scaled ADC raw data of the gyro in radians for second
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#define Gyro_Scaled_Y(x) x*ToRad(Gyro_Gain_Y) //Return the scaled ADC raw data of the gyro in radians for second
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#define Gyro_Scaled_Z(x) x*ToRad(Gyro_Gain_Z) //Return the scaled ADC raw data of the gyro in radians for second
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#define Kp_ROLLPITCH 0.0032 //0.002 //0.003125 // Pitch&Roll Proportional Gain
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#define Ki_ROLLPITCH 0.000001 //0.000005 //0.0000025 // Pitch&Roll Integrator Gain
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#define Kp_YAW 1.5 // Yaw Porportional Gain
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#define Ki_YAW 0.00005 //0.00005 // Yaw Integrator Gain
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/*For debugging purposes*/
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#define OUTPUTMODE 1 //If value = 1 will print the corrected data, 0 will print uncorrected data of the gyros (with drift), 2 Accel only data
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//Sensor: GYROX, GYROY, GYROZ, ACCELX, ACCELY, ACCELZ
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uint8_t sensors[6] = {1,2,0,4,5,6}; // For ArduPilot Mega Sensor Shield Hardware
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//Sensor: GYROX, GYROY, GYROZ, ACCELX, ACCELY, ACCELZ
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int SENSOR_SIGN[]={-1,1,-1,1,-1,1,-1,-1,-1}; //{1,-1,-1,1,-1,1,-1,-1,-1}
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int AN[6]; //array that store the 6 ADC channels
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int AN_OFFSET[6]; //Array that store the Offset of the gyros and accelerometers
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float G_Dt=0.02; // Integration time for the gyros (DCM algorithm)
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float Accel_Vector[3]= {0,0,0}; //Store the acceleration in a vector
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float Accel_Vector_unfiltered[3]= {0,0,0}; //Store the acceleration in a vector
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//float Accel_magnitude;
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//float Accel_weight;
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float Gyro_Vector[3]= {0,0,0};//Store the gyros rutn rate in a vector
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float Omega_Vector[3]= {0,0,0}; //Corrected Gyro_Vector data
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float Omega_P[3]= {0,0,0};//Omega Proportional correction
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float Omega_I[3]= {0,0,0};//Omega Integrator
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float Omega[3]= {0,0,0};
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float errorRollPitch[3]= {0,0,0};
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float errorYaw[3]= {0,0,0};
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float errorCourse=0;
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float COGX=0; //Course overground X axis
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float COGY=1; //Course overground Y axis
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float roll=0;
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float pitch=0;
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float yaw=0;
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unsigned int counter=0;
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float DCM_Matrix[3][3]= {
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{1,0,0}
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,{0,1,0}
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,{0,0,1}
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};
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float Update_Matrix[3][3]={{0,1,2},{3,4,5},{6,7,8}}; //Gyros here
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float Temporary_Matrix[3][3]={
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{0,0,0}
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,{0,0,0}
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,{0,0,0}
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};
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// GPS variables
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float speed_3d=0;
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int GPS_ground_speed=0;
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long timer=0; //general porpuse timer
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long timer_old;
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// Attitude control variables
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float command_rx_roll=0; // User commands
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float command_rx_roll_old;
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float command_rx_roll_diff;
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float command_rx_pitch=0;
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float command_rx_pitch_old;
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float command_rx_pitch_diff;
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float command_rx_yaw=0;
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float command_rx_yaw_diff;
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int control_roll; // PID control results
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int control_pitch;
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int control_yaw;
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float K_aux;
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// Attitude PID controls
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float roll_I=0;
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float roll_D;
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float err_roll;
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float pitch_I=0;
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float pitch_D;
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float err_pitch;
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float yaw_I=0;
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float yaw_D;
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float err_yaw;
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//Position control
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long target_longitude;
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long target_lattitude;
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byte target_position;
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float gps_err_roll;
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float gps_err_roll_old;
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float gps_roll_D;
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float gps_roll_I=0;
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float gps_err_pitch;
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float gps_err_pitch_old;
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float gps_pitch_D;
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float gps_pitch_I=0;
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float command_gps_roll;
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float command_gps_pitch;
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//Altitude control
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int Initial_Throttle;
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int target_sonar_altitude;
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int err_altitude;
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int err_altitude_old;
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float command_altitude;
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float altitude_I;
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float altitude_D;
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// Sonar variables
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int Sonar_value=0;
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#define SonarToCm(x) (x*1.26) // Sonar raw value to centimeters
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int Sonar_Counter=0;
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// AP_mode : 1=> Position hold 2=>Stabilization assist mode (normal mode)
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byte AP_mode = 2;
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long t0;
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int num_iter;
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float aux_debug;
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// Radio definitions
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int Neutro_yaw;
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int ch_roll;
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int ch_pitch;
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int ch_throttle;
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int ch_yaw;
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#define CHANN_CENTER 1500
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#define MIN_THROTTLE 1040 // Throttle pulse width at minimun...
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/* ************************************************************ */
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/* Altitude control... (based on sonar) */
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void Altitude_control(int target_sonar_altitude)
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{
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err_altitude_old = err_altitude;
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err_altitude = target_sonar_altitude - Sonar_value;
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altitude_D = (float)(err_altitude-err_altitude_old)/G_Dt;
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altitude_I += (float)err_altitude*G_Dt;
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altitude_I = constrain(altitude_I,-100,100);
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command_altitude = Initial_Throttle + KP_ALTITUDE*err_altitude + KD_ALTITUDE*altitude_D + KI_ALTITUDE*altitude_I;
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}
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/* ************************************************************ */
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/* Position control... */
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void Position_control(long lat_dest, long lon_dest)
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{
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long Lon_diff;
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long Lat_diff;
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float gps_err_roll;
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float gps_err_pitch;
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Lon_diff = lon_dest - GPS.Longitude;
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Lat_diff = lat_dest - GPS.Lattitude;
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// ROLL
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gps_err_roll_old = gps_err_roll;
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//Optimization : cos(yaw) = DCM_Matrix[0][0] ; sin(yaw) = DCM_Matrix[1][0]
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gps_err_roll = (float)Lon_diff*GEOG_CORRECTION_FACTOR*DCM_Matrix[0][0] - (float)Lat_diff*DCM_Matrix[1][0];
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gps_roll_D = (gps_err_roll-gps_err_roll_old)/G_Dt;
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gps_roll_I += gps_err_roll*G_Dt;
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gps_roll_I = constrain(gps_roll_I,-500,500);
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command_gps_roll = KP_GPS_ROLL*gps_err_roll + KD_GPS_ROLL*gps_roll_D + KI_GPS_ROLL*gps_roll_I;
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command_gps_roll = constrain(command_gps_roll,-GPS_MAX_ANGLE,GPS_MAX_ANGLE); // Limit max command
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// PITCH
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gps_err_pitch_old = gps_err_pitch;
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gps_err_pitch = -(float)Lat_diff*DCM_Matrix[0][0]- (float)Lon_diff*GEOG_CORRECTION_FACTOR*DCM_Matrix[1][0];
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gps_pitch_D = (gps_err_pitch-gps_err_pitch_old)/G_Dt;
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gps_pitch_I += gps_err_pitch*G_Dt;
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gps_pitch_I = constrain(gps_pitch_I,-500,500);
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command_gps_pitch = KP_GPS_PITCH*gps_err_pitch + KD_GPS_PITCH*gps_pitch_D + KI_GPS_PITCH*gps_pitch_I;
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command_gps_pitch = constrain(command_gps_pitch,-GPS_MAX_ANGLE,GPS_MAX_ANGLE); // Limit max command
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}
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/* ************************************************************ */
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// ROLL, PITCH and YAW PID controls...
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// Input : desired Roll, Pitch and Yaw absolute angles. Output : Motor commands
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void Attitude_control()
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{
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// ROLL CONTROL
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if (AP_mode==2) // Normal Mode => Stabilization mode
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err_roll = command_rx_roll - ToDeg(roll);
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else
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err_roll = (command_rx_roll + command_gps_roll) - ToDeg(roll); // Position control
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err_roll = constrain(err_roll,-25,25); // to limit max roll command...
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roll_I += err_roll*G_Dt;
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roll_I = constrain(roll_I,-20,20);
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// D term implementation => two parts: gyro part and command part
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// To have a better (faster) response we can use the Gyro reading directly for the Derivative term...
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// Omega[] is the raw gyro reading plus Omega_I, so it´s bias corrected
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// We also add a part that takes into account the command from user (stick) to make the system more responsive to user inputs
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roll_D = command_rx_roll_diff*KD_QUAD_COMMAND_PART - ToDeg(Omega[0]); // Take into account Angular velocity of the stick (command)
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// PID control
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control_roll = K_aux*err_roll + KD_QUAD_ROLL*roll_D + KI_QUAD_ROLL*roll_I;
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// PITCH CONTROL
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if (AP_mode==2) // Normal mode => Stabilization mode
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err_pitch = command_rx_pitch - ToDeg(pitch);
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else
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err_pitch = (command_rx_pitch + command_gps_pitch) - ToDeg(pitch); // Position Control
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err_pitch = constrain(err_pitch,-25,25); // to limit max pitch command...
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pitch_I += err_pitch*G_Dt;
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pitch_I = constrain(pitch_I,-20,20);
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// D term
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pitch_D = command_rx_pitch_diff*KD_QUAD_COMMAND_PART - ToDeg(Omega[1]);
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// PID control
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control_pitch = K_aux*err_pitch + KD_QUAD_PITCH*pitch_D + KI_QUAD_PITCH*pitch_I;
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// YAW CONTROL
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err_yaw = command_rx_yaw - ToDeg(yaw);
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if (err_yaw > 180) // Normalize to -180,180
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err_yaw -= 360;
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else if(err_yaw < -180)
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err_yaw += 360;
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err_yaw = constrain(err_yaw,-60,60); // to limit max yaw command...
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yaw_I += err_yaw*G_Dt;
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yaw_I = constrain(yaw_I,-20,20);
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yaw_D = command_rx_yaw_diff*KD_QUAD_COMMAND_PART - ToDeg(Omega[2]);
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// PID control
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control_yaw = KP_QUAD_YAW*err_yaw + KD_QUAD_YAW*yaw_D + KI_QUAD_YAW*yaw_I;
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}
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// Maximun slope filter for radio inputs... (limit max differences between readings)
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int channel_filter(int ch, int ch_old)
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{
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int diff_ch_old;
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if (ch_old==0) // ch_old not initialized
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return(ch);
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diff_ch_old = ch - ch_old; // Difference with old reading
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if (diff_ch_old<0)
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{
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if (diff_ch_old<-40)
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return(ch_old-40); // We limit the max difference between readings
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}
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else
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{
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if (diff_ch_old>40)
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return(ch_old+40);
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}
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//return((ch+ch_old)>>1); // Small filtering
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return(ch);
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}
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/* ****** SETUP ********************************************************************* */
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void setup()
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{
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int i;
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float aux_float[3];
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pinMode(LED_Yellow,OUTPUT); //Yellow LED A (PC1)
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pinMode(LED_Red,OUTPUT); //Red LED B (PC2)
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pinMode(LED_Green,OUTPUT); //Green LED C (PC0)
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pinMode(SW1_pin,INPUT); //Switch SW1 (pin PG0)
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pinMode(RELE_pin,OUTPUT); // Rele output
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digitalWrite(RELE_pin,LOW);
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delay(250);
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APM_RC_QUAD.Init(); // APM Radio initialization
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APM_ADC.Init(); // APM ADC library initialization
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DataFlash.Init(); // DataFlash log initialization
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GPS.Init(); // GPS Initialization
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delay(100);
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// RC channels Initialization (Quad motors)
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APM_RC_QUAD.OutputCh(0,MIN_THROTTLE+15); // Motors stoped
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APM_RC_QUAD.OutputCh(1,MIN_THROTTLE+15);
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APM_RC_QUAD.OutputCh(2,MIN_THROTTLE+15);
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APM_RC_QUAD.OutputCh(3,MIN_THROTTLE+15);
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#if (MAGNETOMETER)
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APM_Compass.Init(); // I2C initialization
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#endif
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DataFlash.StartWrite(1); // Start a write session on page 1
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Serial.begin(57600);
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Serial.println();
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Serial.println("ArduCopter Quadcopter v1.0");
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// Check if we enable the DataFlash log Read Mode (switch)
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// If we press switch 1 at startup we read the Dataflash eeprom
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while (digitalRead(SW1_pin)==0)
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{
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Serial.println("Entering Log Read Mode...");
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Log_Read(1,1000);
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delay(30000);
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}
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delay(3000);
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Read_adc_raw();
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delay(20);
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// Offset values for accels and gyros...
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AN_OFFSET[3] = acc_offset_x;
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AN_OFFSET[4] = acc_offset_y;
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AN_OFFSET[5] = acc_offset_z;
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aux_float[0] = gyro_offset_roll;
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aux_float[1] = gyro_offset_pitch;
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aux_float[2] = gyro_offset_yaw;
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// Take the gyro offset values
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for(i=0;i<250;i++)
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{
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Read_adc_raw();
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for(int y=0; y<=2; y++) // Read initial ADC values for gyro offset.
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{
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aux_float[y]=aux_float[y]*0.8 + AN[y]*0.2;
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//Serial.print(AN[y]);
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//Serial.print(",");
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}
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//Serial.println();
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Log_Write_Sensor(AN[0],AN[1],AN[2],AN[3],AN[4],AN[5],ch_throttle);
|
||
delay(14);
|
||
}
|
||
for(int y=0; y<=2; y++)
|
||
AN_OFFSET[y]=aux_float[y];
|
||
|
||
for(i=0;i<6;i++)
|
||
{
|
||
Serial.print("AN[]:");
|
||
Serial.println(AN_OFFSET[i]);
|
||
}
|
||
|
||
Neutro_yaw = APM_RC_QUAD.InputCh(3); // Take yaw neutral radio value
|
||
Serial.print("Yaw neutral value:");
|
||
Serial.println(Neutro_yaw);
|
||
|
||
#if (RADIO_TEST_MODE) // RADIO TEST MODE TO TEST RADIO CHANNELS
|
||
while(1)
|
||
{
|
||
if (APM_RC_QUAD.GetState()==1)
|
||
{
|
||
Serial.print("AIL:");
|
||
Serial.print(APM_RC_QUAD.InputCh(0));
|
||
Serial.print("ELE:");
|
||
Serial.print(APM_RC_QUAD.InputCh(1));
|
||
Serial.print("THR:");
|
||
Serial.print(APM_RC_QUAD.InputCh(2));
|
||
Serial.print("YAW:");
|
||
Serial.print(APM_RC_QUAD.InputCh(3));
|
||
Serial.print("AUX(mode):");
|
||
Serial.print(APM_RC_QUAD.InputCh(4));
|
||
Serial.print("AUX2:");
|
||
Serial.print(APM_RC_QUAD.InputCh(5));
|
||
Serial.println();
|
||
delay(200);
|
||
}
|
||
}
|
||
#endif
|
||
|
||
delay(1000);
|
||
|
||
DataFlash.StartWrite(1); // Start a write session on page 1
|
||
timer = millis();
|
||
Read_adc_raw(); // Initialize ADC readings...
|
||
delay(20);
|
||
digitalWrite(LED_Green,HIGH); // Ready to go...
|
||
}
|
||
|
||
/* ***** MAIN LOOP ***** */
|
||
void loop(){
|
||
|
||
int aux;
|
||
int i;
|
||
float aux_float;
|
||
//Log variables
|
||
int log_roll;
|
||
int log_pitch;
|
||
int log_yaw;
|
||
|
||
|
||
if((millis()-timer)>=14) // Main loop 70Hz
|
||
{
|
||
counter++;
|
||
timer_old = timer;
|
||
timer=millis();
|
||
G_Dt = (timer-timer_old)/1000.0; // Real time of loop run
|
||
|
||
// IMU DCM Algorithm
|
||
Read_adc_raw();
|
||
#if (MAGNETOMETER)
|
||
if (counter > 8) // Read compass data at 10Hz... (7 loop runs)
|
||
{
|
||
counter=0;
|
||
APM_Compass.Read(); // Read magnetometer
|
||
APM_Compass.Calculate(roll,pitch); // Calculate heading
|
||
}
|
||
#endif
|
||
Matrix_update();
|
||
Normalize();
|
||
Drift_correction();
|
||
Euler_angles();
|
||
// *****************
|
||
|
||
// Output data
|
||
log_roll = ToDeg(roll)*10;
|
||
log_pitch = ToDeg(pitch)*10;
|
||
log_yaw = ToDeg(yaw)*10;
|
||
|
||
Serial.print(log_roll);
|
||
Serial.print(",");
|
||
Serial.print(log_pitch);
|
||
Serial.print(",");
|
||
Serial.print(log_yaw);
|
||
|
||
/*
|
||
for (int i=0;i<6;i++)
|
||
{
|
||
Serial.print(AN[i]);
|
||
Serial.print(",");
|
||
}
|
||
*/
|
||
|
||
// Write Sensor raw data to DataFlash log
|
||
Log_Write_Sensor(AN[0],AN[1],AN[2],AN[3],AN[4],AN[5],ch_throttle);
|
||
// Write attitude to DataFlash log
|
||
Log_Write_Attitude(log_roll,log_pitch,log_yaw);
|
||
|
||
if (APM_RC_QUAD.GetState()==1) // New radio frame?
|
||
{
|
||
// Commands from radio Rx...
|
||
// Stick position defines the desired angle in roll, pitch and yaw
|
||
ch_roll = channel_filter(APM_RC_QUAD.InputCh(0),ch_roll);
|
||
ch_pitch = channel_filter(APM_RC_QUAD.InputCh(1),ch_pitch);
|
||
ch_throttle = channel_filter(APM_RC_QUAD.InputCh(2),ch_throttle);
|
||
ch_yaw = channel_filter(APM_RC_QUAD.InputCh(3),ch_yaw);
|
||
command_rx_roll_old = command_rx_roll;
|
||
command_rx_roll = (ch_roll-CHANN_CENTER)/12.0;
|
||
command_rx_roll_diff = command_rx_roll-command_rx_roll_old;
|
||
command_rx_pitch_old = command_rx_pitch;
|
||
command_rx_pitch = (ch_pitch-CHANN_CENTER)/12.0;
|
||
command_rx_pitch_diff = command_rx_pitch-command_rx_pitch_old;
|
||
aux_float = (ch_yaw-Neutro_yaw)/180.0;
|
||
command_rx_yaw += aux_float;
|
||
command_rx_yaw_diff = aux_float;
|
||
if (command_rx_yaw > 180) // Normalize yaw to -180,180 degrees
|
||
command_rx_yaw -= 360.0;
|
||
else if (command_rx_yaw < -180)
|
||
command_rx_yaw += 360.0;
|
||
|
||
// I use K_aux (channel 6) to adjust gains linked to a knob in the radio... [not used now]
|
||
//K_aux = K_aux*0.8 + ((ch_aux-1500)/100.0 + 0.6)*0.2;
|
||
K_aux = K_aux*0.8 + ((APM_RC_QUAD.InputCh(5)-1500)/300.0 + 1.7)*0.2; // /300 + 1.0
|
||
if (K_aux < 0)
|
||
K_aux = 0;
|
||
|
||
//Serial.print(",");
|
||
//Serial.print(K_aux);
|
||
|
||
// We read the Quad Mode from Channel 5
|
||
if (APM_RC_QUAD.InputCh(4) < 1200)
|
||
{
|
||
AP_mode = 1; // Position hold mode (GPS position control)
|
||
digitalWrite(LED_Yellow,HIGH); // Yellow LED On
|
||
}
|
||
else
|
||
{
|
||
AP_mode = 2; // Normal mode (Stabilization assist mode)
|
||
digitalWrite(LED_Yellow,LOW); // Yellow LED off
|
||
}
|
||
// Write Radio data to DataFlash log
|
||
Log_Write_Radio(ch_roll,ch_pitch,ch_throttle,ch_yaw,int(K_aux*100),(int)AP_mode);
|
||
} // END new radio data
|
||
|
||
if (AP_mode==1) // Position Control
|
||
{
|
||
if (target_position==0) // If this is the first time we switch to Position control, actual position is our target position
|
||
{
|
||
target_lattitude = GPS.Lattitude;
|
||
target_longitude = GPS.Longitude;
|
||
Serial.println();
|
||
Serial.print("* Target:");
|
||
Serial.print(target_longitude);
|
||
Serial.print(",");
|
||
Serial.println(target_lattitude);
|
||
target_position=1;
|
||
//target_sonar_altitude = sonar_value;
|
||
//Initial_Throttle = ch3;
|
||
// Reset I terms
|
||
altitude_I = 0;
|
||
gps_roll_I = 0;
|
||
gps_pitch_I = 0;
|
||
}
|
||
}
|
||
else
|
||
target_position=0;
|
||
|
||
//Read GPS
|
||
GPS.Read();
|
||
if (GPS.NewData) // New GPS data?
|
||
{
|
||
GPS.NewData=0; // We Reset the flag...
|
||
|
||
//Output GPS data
|
||
//Serial.print(",");
|
||
//Serial.print(GPS.Lattitude);
|
||
//Serial.print(",");
|
||
//Serial.print(GPS.Longitude);
|
||
|
||
// Write GPS data to DataFlash log
|
||
Log_Write_GPS(GPS.Time, GPS.Lattitude,GPS.Longitude,GPS.Altitude, GPS.Ground_Speed, GPS.Ground_Course, GPS.Fix, GPS.NumSats);
|
||
|
||
if (GPS.Fix)
|
||
digitalWrite(LED_Red,HIGH); // GPS Fix => Blue LED
|
||
else
|
||
digitalWrite(LED_Red,LOW);
|
||
|
||
if (AP_mode==1)
|
||
{
|
||
if ((target_position==1)&&(GPS.Fix))
|
||
{
|
||
Position_control(target_lattitude,target_longitude); // Call position hold routine
|
||
/*
|
||
Serial.print("PC:");
|
||
Serial.print(command_gps_roll);
|
||
Serial.print(",");
|
||
Serial.print(command_gps_pitch);
|
||
Serial.println();
|
||
*/
|
||
}
|
||
else
|
||
{
|
||
//Serial.print("NOFIX");
|
||
command_gps_roll=0;
|
||
command_gps_pitch=0;
|
||
}
|
||
}
|
||
}
|
||
|
||
// Attitude control (Roll, Pitch, yaw)
|
||
Attitude_control();
|
||
|
||
// Quadcopter mix
|
||
if (ch_throttle > (MIN_THROTTLE+20)) // Minimun throttle to start control
|
||
{
|
||
APM_RC_QUAD.OutputCh(0,ch_throttle - control_roll - control_yaw); // Right motor
|
||
APM_RC_QUAD.OutputCh(1,ch_throttle + control_roll - control_yaw); // Left motor
|
||
APM_RC_QUAD.OutputCh(2,ch_throttle + control_pitch + control_yaw); // Front motor
|
||
APM_RC_QUAD.OutputCh(3,ch_throttle - control_pitch + control_yaw); // Back motor
|
||
}
|
||
else
|
||
{
|
||
roll_I = 0; // reset I terms of PID controls
|
||
pitch_I = 0;
|
||
yaw_I = 0;
|
||
APM_RC_QUAD.OutputCh(0,MIN_THROTTLE); // Motors stoped
|
||
APM_RC_QUAD.OutputCh(1,MIN_THROTTLE);
|
||
APM_RC_QUAD.OutputCh(2,MIN_THROTTLE);
|
||
APM_RC_QUAD.OutputCh(3,MIN_THROTTLE);
|
||
// Initialize yaw command to actual yaw
|
||
command_rx_yaw = ToDeg(yaw);
|
||
command_rx_yaw_diff = 0;
|
||
}
|
||
Serial.println(); // Line END
|
||
}
|
||
}
|