Subversion Repositories FlightCtrl

Rev

Rev 2122 | Rev 2129 | Go to most recent revision | Only display areas with differences | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 2122 Rev 2126
1
#include <stdlib.h>
1
#include <stdlib.h>
2
#include <avr/io.h>
2
#include <avr/io.h>
3
#include "eeprom.h"
3
#include "eeprom.h"
4
#include "flight.h"
4
#include "flight.h"
5
#include "output.h"
5
#include "output.h"
6
 
6
 
7
// Necessary for external control and motor test
7
// Necessary for external control and motor test
8
#include "uart0.h"
8
#include "uart0.h"
9
#include "timer2.h"
9
#include "timer2.h"
10
#include "analog.h"
10
#include "analog.h"
11
#include "attitude.h"
11
#include "attitude.h"
12
#include "controlMixer.h"
12
#include "controlMixer.h"
13
#include "configuration.h"
13
#include "configuration.h"
14
 
14
 
15
#define CHECK_MIN_MAX(value, min, max) {if(value < min) value = min; else if(value > max) value = max;}
15
#define CHECK_MIN_MAX(value, min, max) {if(value < min) value = min; else if(value > max) value = max;}
16
 
16
 
17
/*
17
/*
18
 * target-directions integrals.
18
 * target-directions integrals.
19
 */
19
 */
20
int32_t target[3];
20
int32_t target[3];
21
 
21
 
22
/*
22
/*
23
 * Error integrals.
23
 * Error integrals.
24
 */
24
 */
25
int32_t error[3];
25
int32_t error[3];
26
 
26
 
27
uint8_t reverse[3];
27
uint8_t reverse[3];
28
int32_t maxError[3];
28
int32_t maxError[3];
29
int32_t IPart[3] = { 0, 0, 0 };
29
int32_t IPart[3] = { 0, 0, 0 };
30
PID_t airspeedPID[3];
30
PID_t airspeedPID[3];
31
 
31
 
32
int16_t controlServos[NUM_CONTROL_SERVOS];
32
int16_t controlServos[NUM_CONTROL_SERVOS];
33
 
33
 
34
/************************************************************************/
34
/************************************************************************/
35
/*  Neutral Readings                                                    */
35
/*  Neutral Readings                                                    */
36
/************************************************************************/
36
/************************************************************************/
37
#define CONTROL_CONFIG_SCALE 10
37
#define CONTROL_CONFIG_SCALE 10
38
 
38
 
39
void flight_setGround(void) {
39
void flight_setGround(void) {
40
        IPart[PITCH] = IPart[ROLL] = IPart[YAW] = 0;
40
        IPart[PITCH] = IPart[ROLL] = IPart[YAW] = 0;
41
        target[PITCH] = attitude[PITCH];
41
        target[PITCH] = attitude[PITCH];
42
        target[ROLL] = attitude[ROLL];
42
        target[ROLL] = attitude[ROLL];
43
        target[YAW] = attitude[YAW];
43
        target[YAW] = attitude[YAW];
44
}
44
}
45
 
45
 
46
void flight_updateFlightParametersToFlightMode(void) {
46
void flight_updateFlightParametersToFlightMode(void) {
47
        debugOut.analog[16] = currentFlightMode;
47
        debugOut.analog[16] = currentFlightMode;
48
        reverse[PITCH] = staticParams.servosReverse & CONTROL_SERVO_REVERSE_ELEVATOR;
48
        reverse[PITCH] = staticParams.servosReverse & CONTROL_SERVO_REVERSE_ELEVATOR;
49
        reverse[ROLL] = staticParams.servosReverse & CONTROL_SERVO_REVERSE_AILERONS;
49
        reverse[ROLL] = staticParams.servosReverse & CONTROL_SERVO_REVERSE_AILERONS;
50
        reverse[YAW] = staticParams.servosReverse & CONTROL_SERVO_REVERSE_RUDDER;
50
        reverse[YAW] = staticParams.servosReverse & CONTROL_SERVO_REVERSE_RUDDER;
51
 
51
 
52
        // At a switch to angles, we want to kill errors first.
52
        // At a switch to angles, we want to kill errors first.
53
        // This should be triggered only once per mode change!
53
        // This should be triggered only once per mode change!
54
        if (currentFlightMode == FLIGHT_MODE_ANGLES) {
54
        if (currentFlightMode == FLIGHT_MODE_ANGLES) {
55
                target[PITCH] = attitude[PITCH];
55
                target[PITCH] = attitude[PITCH];
56
                target[ROLL] = attitude[ROLL];
56
                target[ROLL] = attitude[ROLL];
57
                target[YAW] = attitude[YAW];
57
                target[YAW] = attitude[YAW];
58
        }
58
        }
59
 
59
 
60
        for (uint8_t axis=0; axis<3; axis++) {
60
        for (uint8_t axis=0; axis<3; axis++) {
61
                maxError[axis] = (int32_t)staticParams.gyroPID[axis].iMax * GYRO_DEG_FACTOR;
61
                maxError[axis] = (int32_t)staticParams.gyroPID[axis].iMax * GYRO_DEG_FACTOR;
62
        }
62
        }
63
}
63
}
64
 
64
 
65
// Normal at airspeed = 10.
65
// Normal at airspeed = 10.
66
uint8_t calcAirspeedPID(uint8_t pid) {
66
uint8_t calcAirspeedPID(uint8_t pid) {
67
        if (!(staticParams.bitConfig & CFG_USE_AIRSPEED_PID)) {
67
        if (!(staticParams.bitConfig & CFG_USE_AIRSPEED_PID)) {
68
                return pid;
68
                return pid;
69
        }
69
        }
70
 
70
 
71
        uint16_t result = (pid * 10) / airspeedVelocity;
71
        uint16_t result = (pid * 10) / airspeedVelocity;
72
 
72
 
73
        if (result > 240 || airspeedVelocity == 0) {
73
        if (result > 240 || airspeedVelocity == 0) {
74
                result = 240;
74
                result = 240;
75
        }
75
        }
76
 
76
 
77
        return result;
77
        return result;
78
}
78
}
79
 
79
 
80
void setAirspeedPIDs(void) {
80
void setAirspeedPIDs(void) {
81
        for (uint8_t axis = 0; axis<3; axis++) {
81
        for (uint8_t axis = 0; axis<3; axis++) {
82
                airspeedPID[axis].P = calcAirspeedPID(dynamicParams.gyroPID[axis].P);
82
                airspeedPID[axis].P = calcAirspeedPID(dynamicParams.gyroPID[axis].P);
83
                airspeedPID[axis].I = calcAirspeedPID(dynamicParams.gyroPID[axis].I); // Should this be???
83
                airspeedPID[axis].I = calcAirspeedPID(dynamicParams.gyroPID[axis].I); // Should this be???
84
                airspeedPID[axis].D = dynamicParams.gyroPID[axis].D;
84
                airspeedPID[axis].D = dynamicParams.gyroPID[axis].D;
85
        }
85
        }
86
}
86
}
87
 
87
 
88
#define LOG_STICK_SCALE 8
88
#define LOG_STICK_SCALE 8
89
#define LOG_P_SCALE 6
89
#define LOG_P_SCALE 6
90
#define LOG_I_SCALE 10
90
#define LOG_I_SCALE 10
91
#define LOG_D_SCALE 6
91
#define LOG_D_SCALE 6
92
 
92
 
93
/************************************************************************/
93
/************************************************************************/
94
/*  Main Flight Control                                                 */
94
/*  Main Flight Control                                                 */
95
/************************************************************************/
95
/************************************************************************/
96
void flight_control(void) {
96
void flight_control(void) {
97
        // Mixer Fractions that are combined for Motor Control
97
        // Mixer Fractions that are combined for Motor Control
98
        int16_t term[4];
98
        int16_t term[4];
99
 
99
 
100
        // PID controller variables
100
        // PID controller variables
101
        int16_t PDPart[3];
101
        int16_t PDPart[3];
102
 
102
 
103
        static int8_t debugDataTimer = 1;
103
        static int8_t debugDataTimer = 1;
104
 
104
 
105
        // High resolution motor values for smoothing of PID motor outputs
105
        // High resolution motor values for smoothing of PID motor outputs
106
        // static int16_t outputFilters[MAX_OUTPUTS];
106
        // static int16_t outputFilters[MAX_OUTPUTS];
107
 
107
 
108
        uint8_t axis;
108
        uint8_t axis;
109
 
109
 
110
        setAirspeedPIDs();
110
        setAirspeedPIDs();
111
 
111
 
112
        term[CONTROL_THROTTLE] = controls[CONTROL_THROTTLE];
112
        term[CONTROL_THROTTLE] = controls[CONTROL_THROTTLE];
113
 
113
 
114
        // These params are just left the same in all modes. In MANUAL and RATE the results are ignored anyway.
114
        // These params are just left the same in all modes. In MANUAL and RATE the results are ignored anyway.
115
        int32_t tmp;
115
        int32_t tmp;
116
 
116
 
117
        tmp = ((int32_t)controls[CONTROL_ELEVATOR] * staticParams.stickIElevator) >> LOG_STICK_SCALE;
117
        tmp = ((int32_t)controls[CONTROL_ELEVATOR] * staticParams.stickIElevator) >> LOG_STICK_SCALE;
118
        if (reverse[PITCH]) target[PITCH] -= tmp; else target[PITCH] += tmp;
118
        if (reverse[PITCH]) target[PITCH] += tmp; else target[PITCH] -= tmp;
119
 
119
 
120
        tmp = ((int32_t)controls[CONTROL_AILERONS] * staticParams.stickIAilerons) >> LOG_STICK_SCALE;
120
        tmp = ((int32_t)controls[CONTROL_AILERONS] * staticParams.stickIAilerons) >> LOG_STICK_SCALE;
121
        if (reverse[ROLL]) target[ROLL] -= tmp; else target[ROLL] += tmp;
121
        if (reverse[ROLL]) target[ROLL] += tmp; else target[ROLL] -= tmp;
122
 
122
 
123
        tmp = ((int32_t)controls[CONTROL_RUDDER] * staticParams.stickIRudder) >> LOG_STICK_SCALE;
123
        tmp = ((int32_t)controls[CONTROL_RUDDER] * staticParams.stickIRudder) >> LOG_STICK_SCALE;
124
        if (reverse[YAW]) target[YAW] -= tmp; else target[YAW] += tmp;
124
        if (reverse[YAW]) target[YAW] += tmp; else target[YAW] -= tmp;
125
 
125
 
126
        for (axis = PITCH; axis <= YAW; axis++) {
126
        for (axis = PITCH; axis <= YAW; axis++) {
127
                if (target[axis] > OVER180) {
127
                if (target[axis] > OVER180) {
128
                        target[axis] -= OVER360;
128
                        target[axis] -= OVER360;
129
                } else if (target[axis] <= -OVER180) {
129
                } else if (target[axis] <= -OVER180) {
130
                        target[axis] += OVER360;
130
                        target[axis] += OVER360;
131
                }
131
                }
132
 
132
 
133
                //if (reverse[axis])
133
                //if (reverse[axis])
134
                error[axis] = attitude[axis] - target[axis];
134
                error[axis] = attitude[axis] - target[axis];
135
                // else
135
                // else
136
                // error[axis] = attitude[axis] - target[axis];
136
                // error[axis] = attitude[axis] - target[axis];
137
 
137
 
138
                if (error[axis] > maxError[axis]) {
138
                if (error[axis] > maxError[axis]) {
139
                  error[axis] = maxError[axis];
139
                  error[axis] = maxError[axis];
140
                } else if (error[axis] < -maxError[axis]) {
140
                } else if (error[axis] < -maxError[axis]) {
141
                  error[axis] =- maxError[axis];
141
                  error[axis] =- maxError[axis];
142
                } else {
142
                } else {
143
                        // update I parts here for angles mode. Ĩ parts in rate mode is something different.
143
                        // update I parts here for angles mode. Ĩ parts in rate mode is something different.
144
                }
144
                }
145
 
145
 
146
                /************************************************************************/
146
                /************************************************************************/
147
                /* Calculate control feedback from angle (gyro integral)                */
147
                /* Calculate control feedback from angle (gyro integral)                */
148
                /* and angular velocity (gyro signal)                                   */
148
                /* and angular velocity (gyro signal)                                   */
149
                /************************************************************************/
149
                /************************************************************************/
150
                if (currentFlightMode == FLIGHT_MODE_ANGLES || currentFlightMode == FLIGHT_MODE_RATE) {
150
                if (currentFlightMode == FLIGHT_MODE_ANGLES || currentFlightMode == FLIGHT_MODE_RATE) {
151
                        PDPart[axis] = +(((int32_t) gyro_PID[axis] * (int32_t) airspeedPID[axis].P) >> LOG_P_SCALE)
151
                        PDPart[axis] = +(((int32_t) gyro_PID[axis] * (int32_t) airspeedPID[axis].P) >> LOG_P_SCALE)
152
                                + (((int16_t)gyroD[axis] * (int16_t) airspeedPID[axis].D) >> LOG_D_SCALE);
152
                                + (((int16_t)gyroD[axis] * (int16_t) airspeedPID[axis].D) >> LOG_D_SCALE);
153
                        //if (reverse[axis])
153
                        //if (reverse[axis])
154
                        //      PDPart[axis] = -PDPart[axis];
154
                        //      PDPart[axis] = -PDPart[axis];
155
                } else {
155
                } else {
156
                        PDPart[axis] = 0;
156
                        PDPart[axis] = 0;
157
                }
157
                }
158
 
158
 
159
                if (currentFlightMode == FLIGHT_MODE_ANGLES) {
159
                if (currentFlightMode == FLIGHT_MODE_ANGLES) {
160
                        int16_t anglePart = (int32_t)(error[axis] * (int32_t) airspeedPID[axis].I) >> LOG_I_SCALE;
160
                        int16_t anglePart = (int32_t)(error[axis] * (int32_t) airspeedPID[axis].I) >> LOG_I_SCALE;
161
                //      if (reverse[axis])
161
                //      if (reverse[axis])
162
                        PDPart[axis] += anglePart;
162
                        PDPart[axis] += anglePart;
163
                //      else
163
                //      else
164
                //              PDPart[axis] -= anglePart;
164
                //              PDPart[axis] -= anglePart;
165
                }
165
                }
166
 
166
 
167
                // Add I parts here... these are integrated errors.
167
                // Add I parts here... these are integrated errors.
168
                if (reverse[axis])
168
                if (reverse[axis])
169
                  term[axis] = controls[axis] - PDPart[axis]; // + IPart[axis];
169
                  term[axis] = controls[axis] - PDPart[axis]; // + IPart[axis];
170
                else
170
                else
171
                  term[axis] = controls[axis] + PDPart[axis]; // + IPart[axis];
171
                  term[axis] = controls[axis] + PDPart[axis]; // + IPart[axis];
172
        }
172
        }
173
 
173
 
174
        debugOut.analog[12] = term[PITCH];
174
        debugOut.analog[12] = term[PITCH];
175
        debugOut.analog[13] = term[ROLL];
175
        debugOut.analog[13] = term[ROLL];
176
        debugOut.analog[14] = term[YAW];
176
        debugOut.analog[14] = term[YAW];
177
        debugOut.analog[15] = term[THROTTLE];
177
        debugOut.analog[15] = term[THROTTLE];
178
 
178
 
179
        for (uint8_t i = 0; i < NUM_CONTROL_SERVOS; i++) {
179
        for (uint8_t i = 0; i < NUM_CONTROL_SERVOS; i++) {
180
                int16_t tmp;
180
                int16_t tmp;
181
                if (servoTestActive) {
181
                if (servoTestActive) {
182
                        controlServos[i] = ((int16_t) servoTest[i] - 128) * 8;
182
                        controlServos[i] = ((int16_t) servoTest[i] - 128) * 8;
183
                } else {
183
                } else {
184
                        // Follow the normal order of servos: Ailerons, elevator, throttle, rudder.
184
                        // Follow the normal order of servos: Ailerons, elevator, throttle, rudder.
185
                        switch (i) {
185
                        switch (i) {
186
                        case 0:
186
                        case 0:
187
                                tmp = term[ROLL];
187
                                tmp = term[ROLL];
188
                                break;
188
                                break;
189
                        case 1:
189
                        case 1:
190
                                tmp = term[PITCH];
190
                                tmp = term[PITCH];
191
                                break;
191
                                break;
192
                        case 2:
192
                        case 2:
193
                                tmp = term[THROTTLE];
193
                                tmp = term[THROTTLE];
194
                                break;
194
                                break;
195
                        case 3:
195
                        case 3:
196
                                tmp = term[YAW];
196
                                tmp = term[YAW];
197
                                break;
197
                                break;
198
                        default:
198
                        default:
199
                                tmp = 0;
199
                                tmp = 0;
200
                        }
200
                        }
201
                        // These are all signed and in the same units as the RC stuff in rc.c.
201
                        // These are all signed and in the same units as the RC stuff in rc.c.
202
                        controlServos[i] = tmp;
202
                        controlServos[i] = tmp;
203
                }
203
                }
204
        }
204
        }
205
 
205
 
206
        calculateControlServoValues();
206
        calculateControlServoValues();
207
 
207
 
208
        // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
208
        // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
209
        // Debugging
209
        // Debugging
210
        // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
210
        // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
211
        if (!(--debugDataTimer)) {
211
        if (!(--debugDataTimer)) {
212
                debugDataTimer = 24; // update debug outputs at 488 / 24 = 20.3 Hz.
212
                debugDataTimer = 24; // update debug outputs at 488 / 24 = 20.3 Hz.
213
                debugOut.analog[0] = gyro_PID[PITCH]; // in 0.1 deg
213
                debugOut.analog[0] = gyro_PID[PITCH]; // in 0.1 deg
214
                debugOut.analog[1] = gyro_PID[ROLL]; // in 0.1 deg
214
                debugOut.analog[1] = gyro_PID[ROLL]; // in 0.1 deg
215
                debugOut.analog[2] = gyro_PID[YAW];
215
                debugOut.analog[2] = gyro_PID[YAW];
216
 
216
 
217
                debugOut.analog[3] = attitude[PITCH] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
217
                debugOut.analog[3] = attitude[PITCH] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
218
                debugOut.analog[4] = attitude[ROLL] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
218
                debugOut.analog[4] = attitude[ROLL] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
219
                debugOut.analog[5] = attitude[YAW] / (GYRO_DEG_FACTOR / 10);
219
                debugOut.analog[5] = attitude[YAW] / (GYRO_DEG_FACTOR / 10);
220
 
220
 
221
                debugOut.analog[6] = target[PITCH] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
221
                debugOut.analog[6] = target[PITCH] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
222
                debugOut.analog[7] = target[ROLL] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
222
                debugOut.analog[7] = target[ROLL] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
223
                debugOut.analog[8] = target[YAW] / (GYRO_DEG_FACTOR / 10);
223
                debugOut.analog[8] = target[YAW] / (GYRO_DEG_FACTOR / 10);
224
 
224
 
225
                debugOut.analog[9] = error[PITCH] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
225
                debugOut.analog[9] = error[PITCH] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
226
                debugOut.analog[10] = error[ROLL] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
226
                debugOut.analog[10] = error[ROLL] / (GYRO_DEG_FACTOR / 10); // in 0.1 deg
227
                debugOut.analog[11] = error[YAW] / (GYRO_DEG_FACTOR / 10);
227
                debugOut.analog[11] = error[YAW] / (GYRO_DEG_FACTOR / 10);
228
 
228
 
229
                debugOut.analog[12] = term[PITCH];
229
                debugOut.analog[12] = term[PITCH];
230
                debugOut.analog[13] = term[ROLL];
230
                debugOut.analog[13] = term[ROLL];
231
                debugOut.analog[14] = term[YAW];
231
                debugOut.analog[14] = term[YAW];
232
 
232
 
233
                //DebugOut.Analog[18] = (10 * controlIntegrals[CONTROL_ELEVATOR]) / GYRO_DEG_FACTOR_PITCHROLL; // in 0.1 deg
233
                //DebugOut.Analog[18] = (10 * controlIntegrals[CONTROL_ELEVATOR]) / GYRO_DEG_FACTOR_PITCHROLL; // in 0.1 deg
234
                //DebugOut.Analog[19] = (10 * controlIntegrals[CONTROL_AILERONS]) / GYRO_DEG_FACTOR_PITCHROLL; // in 0.1 deg
234
                //DebugOut.Analog[19] = (10 * controlIntegrals[CONTROL_AILERONS]) / GYRO_DEG_FACTOR_PITCHROLL; // in 0.1 deg
235
                //debugOut.analog[22] = (10 * IPart[PITCH]) / GYRO_DEG_FACTOR; // in 0.1 deg
235
                //debugOut.analog[22] = (10 * IPart[PITCH]) / GYRO_DEG_FACTOR; // in 0.1 deg
236
                //debugOut.analog[23] = (10 * IPart[ROLL]) / GYRO_DEG_FACTOR; // in 0.1 deg
236
                //debugOut.analog[23] = (10 * IPart[ROLL]) / GYRO_DEG_FACTOR; // in 0.1 deg
237
        }
237
        }
238
}
238
}
239
 
239