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ESE350 project, Spring 2016, University of Pennsylvania
Dependencies: Adafruit9-DOf Receiver mbed-rtos mbed
main.cpp@37:a983eb9fd9c5, 2016-05-01 (annotated)
- Committer:
- ivo_david_michelle
- Date:
- Sun May 01 18:45:02 2016 +0000
- Revision:
- 37:a983eb9fd9c5
- Parent:
- 36:40b134328376
- Child:
- 38:14bf11115f9f
david's changes and printing diagnostics from readRC
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ivo_david_michelle | 0:4c04e4fd1310 | 1 | #include "mbed.h" |
ivo_david_michelle | 14:64b06476d943 | 2 | #include "rtos.h" |
ivo_david_michelle | 1:b87e95907a18 | 3 | #define _MBED_ |
ivo_david_michelle | 13:291ba30c7806 | 4 | //#include "controller.h" |
ivo_david_michelle | 3:828e82089564 | 5 | #include "sensor.h" |
ivo_david_michelle | 7:f3f94eadc5b5 | 6 | #include "quadcopter.h" |
ivo_david_michelle | 7:f3f94eadc5b5 | 7 | |
ivo_david_michelle | 0:4c04e4fd1310 | 8 | Serial pc(USBTX, USBRX); |
ivo_david_michelle | 15:90e07946186f | 9 | MRF24J40 mrf(p11, p12, p13, p14, p21); |
ivo_david_michelle | 36:40b134328376 | 10 | Timer timer; // timer ;) |
ivo_david_michelle | 36:40b134328376 | 11 | Mutex desired_mutex; |
ivo_david_michelle | 37:a983eb9fd9c5 | 12 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 13 | int started = 0; |
ivo_david_michelle | 37:a983eb9fd9c5 | 14 | |
ivo_david_michelle | 36:40b134328376 | 15 | Quadcopter myQuadcopter(&pc, &mrf, &timer, &desired_mutex); // instantiate Quadcopter object |
ivo_david_michelle | 7:f3f94eadc5b5 | 16 | |
ivo_david_michelle | 6:6f3ffd97d808 | 17 | // pwm outputs for the 4 motors (motor 1 points into x direction, 2 into y direction, 3 -x direction, -y direction |
ivo_david_michelle | 15:90e07946186f | 18 | PwmOut motor_1(p23); |
ivo_david_michelle | 15:90e07946186f | 19 | PwmOut motor_2(p24); |
ivo_david_michelle | 15:90e07946186f | 20 | PwmOut motor_3(p25); |
ivo_david_michelle | 15:90e07946186f | 21 | PwmOut motor_4(p26); |
ivo_david_michelle | 15:90e07946186f | 22 | |
ivo_david_michelle | 22:92401a4fec13 | 23 | // to read the battery voltage |
ivo_david_michelle | 22:92401a4fec13 | 24 | AnalogIn battery(p20); |
ivo_david_michelle | 26:7f50323c0c0d | 25 | DigitalOut batteryLed(LED1); |
ivo_david_michelle | 30:4820042e67b5 | 26 | DigitalOut shutDownLed(LED2); |
ivo_david_michelle | 26:7f50323c0c0d | 27 | |
ivo_david_michelle | 28:61f7356325c3 | 28 | int emergencyOff = 0; |
ivo_david_michelle | 30:4820042e67b5 | 29 | //int lowThrust= {0,0,0}; |
ivo_david_michelle | 30:4820042e67b5 | 30 | int nLowThrust = 0; |
ivo_david_michelle | 30:4820042e67b5 | 31 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 32 | void print_count(int id) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 33 | static int count = 0; |
ivo_david_michelle | 37:a983eb9fd9c5 | 34 | if (count % 1000 == 0) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 35 | printf("%d\t%d\r\n", id, count); |
ivo_david_michelle | 37:a983eb9fd9c5 | 36 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 37 | count++; |
ivo_david_michelle | 37:a983eb9fd9c5 | 38 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 39 | |
ivo_david_michelle | 30:4820042e67b5 | 40 | void emergencyShutdown() |
ivo_david_michelle | 30:4820042e67b5 | 41 | { |
ivo_david_michelle | 30:4820042e67b5 | 42 | emergencyOff = 1; |
ivo_david_michelle | 30:4820042e67b5 | 43 | motor_1 = 0.1; |
ivo_david_michelle | 30:4820042e67b5 | 44 | motor_2 = 0.1; |
ivo_david_michelle | 30:4820042e67b5 | 45 | motor_3 = 0.1; |
ivo_david_michelle | 30:4820042e67b5 | 46 | motor_4 = 0.1; |
ivo_david_michelle | 30:4820042e67b5 | 47 | } |
ivo_david_michelle | 30:4820042e67b5 | 48 | |
ivo_david_michelle | 30:4820042e67b5 | 49 | int getLowThrust(double threshold) |
ivo_david_michelle | 30:4820042e67b5 | 50 | { |
ivo_david_michelle | 30:4820042e67b5 | 51 | double force = myQuadcopter.getForce(); |
ivo_david_michelle | 37:a983eb9fd9c5 | 52 | //printf("%f\r\n", force); |
ivo_david_michelle | 30:4820042e67b5 | 53 | if (force < threshold) { // if low thrust signal is detected |
ivo_david_michelle | 30:4820042e67b5 | 54 | nLowThrust++; |
ivo_david_michelle | 30:4820042e67b5 | 55 | printf("Negative thrust! %f, nLowThrust %d\r\n",myQuadcopter.getForce(),nLowThrust); |
ivo_david_michelle | 30:4820042e67b5 | 56 | if (nLowThrust > 5) { |
ivo_david_michelle | 30:4820042e67b5 | 57 | return 1; |
ivo_david_michelle | 30:4820042e67b5 | 58 | } |
ivo_david_michelle | 30:4820042e67b5 | 59 | } else { |
ivo_david_michelle | 30:4820042e67b5 | 60 | nLowThrust = 0; |
ivo_david_michelle | 30:4820042e67b5 | 61 | } |
ivo_david_michelle | 30:4820042e67b5 | 62 | return 0; |
ivo_david_michelle | 30:4820042e67b5 | 63 | } |
ivo_david_michelle | 4:3040d0f9e8c6 | 64 | |
ivo_david_michelle | 15:90e07946186f | 65 | void controller_thread(void const *args) |
ivo_david_michelle | 15:90e07946186f | 66 | { |
ivo_david_michelle | 26:7f50323c0c0d | 67 | while(emergencyOff != 1) { |
ivo_david_michelle | 30:4820042e67b5 | 68 | // printf(" thrust: %f\r\n",myQuadcopter.getForce()); |
ivo_david_michelle | 37:a983eb9fd9c5 | 69 | myQuadcopter.readSensorValues(); |
ivo_david_michelle | 30:4820042e67b5 | 70 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 71 | myQuadcopter.controller(); |
ivo_david_michelle | 37:a983eb9fd9c5 | 72 | static int count = 0; |
ivo_david_michelle | 37:a983eb9fd9c5 | 73 | if (count % 100 == 0) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 74 | printf("%s\t%d\r\n", "controller", count); |
ivo_david_michelle | 37:a983eb9fd9c5 | 75 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 76 | count++; |
ivo_david_michelle | 37:a983eb9fd9c5 | 77 | motors motorsPwm = myQuadcopter.getPwm(); |
ivo_david_michelle | 37:a983eb9fd9c5 | 78 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 79 | motor_1 = motorsPwm.m1; |
ivo_david_michelle | 37:a983eb9fd9c5 | 80 | motor_2 = motorsPwm.m2; |
ivo_david_michelle | 37:a983eb9fd9c5 | 81 | motor_3 = motorsPwm.m3; |
ivo_david_michelle | 37:a983eb9fd9c5 | 82 | motor_4 = motorsPwm.m4; |
ivo_david_michelle | 37:a983eb9fd9c5 | 83 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 84 | Thread::wait(10); |
ivo_david_michelle | 37:a983eb9fd9c5 | 85 | Thread::yield(); |
ivo_david_michelle | 37:a983eb9fd9c5 | 86 | // pc.printf("m1: %f m2: %f m3: %f m4: %f \n\r", motorsPwm.m1, motorsPwm.m2, motorsPwm.m3, motorsPwm.m4); |
ivo_david_michelle | 37:a983eb9fd9c5 | 87 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 88 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 89 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 90 | void rc_thread(void const *args) |
ivo_david_michelle | 37:a983eb9fd9c5 | 91 | { |
ivo_david_michelle | 37:a983eb9fd9c5 | 92 | static int count = 0; |
ivo_david_michelle | 37:a983eb9fd9c5 | 93 | while(true) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 94 | if (count % 1000 == 0) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 95 | printf("%s\t%d\r\n", "rc", count); |
ivo_david_michelle | 37:a983eb9fd9c5 | 96 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 97 | count++; |
ivo_david_michelle | 37:a983eb9fd9c5 | 98 | myQuadcopter.readRc(); |
ivo_david_michelle | 37:a983eb9fd9c5 | 99 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 100 | if (!started) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 101 | continue; |
ivo_david_michelle | 37:a983eb9fd9c5 | 102 | } |
ivo_david_michelle | 34:eaea0ae92dfa | 103 | int shutdown = getLowThrust(-0.3); |
ivo_david_michelle | 30:4820042e67b5 | 104 | if (shutdown==1) { |
ivo_david_michelle | 30:4820042e67b5 | 105 | emergencyShutdown(); |
ivo_david_michelle | 30:4820042e67b5 | 106 | printf("too long negative thrust! %f\r\n",myQuadcopter.getForce()); |
ivo_david_michelle | 30:4820042e67b5 | 107 | shutDownLed = 1; |
ivo_david_michelle | 30:4820042e67b5 | 108 | break; |
ivo_david_michelle | 30:4820042e67b5 | 109 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 110 | Thread::wait(10); |
ivo_david_michelle | 37:a983eb9fd9c5 | 111 | Thread::yield(); |
ivo_david_michelle | 15:90e07946186f | 112 | } |
ivo_david_michelle | 14:64b06476d943 | 113 | } |
ivo_david_michelle | 14:64b06476d943 | 114 | |
ivo_david_michelle | 22:92401a4fec13 | 115 | void battery_thread(void const *args) |
ivo_david_michelle | 22:92401a4fec13 | 116 | { |
ivo_david_michelle | 22:92401a4fec13 | 117 | float threshold_voltage = 13.0; // desired lowest battery voltage |
ivo_david_michelle | 26:7f50323c0c0d | 118 | float emergencyVoltage = 12.5; // switch off motors below it |
ivo_david_michelle | 22:92401a4fec13 | 119 | float max_voltage = 14.8; // max voltage level of battery |
ivo_david_michelle | 22:92401a4fec13 | 120 | float saturating_voltage = 18.38; // voltage at which ADC == 1 |
ivo_david_michelle | 22:92401a4fec13 | 121 | float max_adc = 0.80522; // when battery is at 14.8V |
ivo_david_michelle | 22:92401a4fec13 | 122 | float threshold_adc = max_adc * threshold_voltage / max_voltage; |
ivo_david_michelle | 26:7f50323c0c0d | 123 | float emergency_adc = max_adc * emergencyVoltage / max_voltage; |
ivo_david_michelle | 26:7f50323c0c0d | 124 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 125 | static int count = 0; |
ivo_david_michelle | 22:92401a4fec13 | 126 | while(true) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 127 | if (count % 1 == 0) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 128 | //printf("%s\t%d\r\n", "battery", count); |
ivo_david_michelle | 37:a983eb9fd9c5 | 129 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 130 | count++; |
ivo_david_michelle | 22:92401a4fec13 | 131 | if (battery.read() < threshold_adc) { |
ivo_david_michelle | 22:92401a4fec13 | 132 | printf("low battery! %f\r\n", battery.read() * saturating_voltage); |
ivo_david_michelle | 29:ae765492fa8b | 133 | batteryLed = 1; |
ivo_david_michelle | 26:7f50323c0c0d | 134 | if (battery.read() < emergency_adc) { |
ivo_david_michelle | 30:4820042e67b5 | 135 | emergencyShutdown(); |
ivo_david_michelle | 30:4820042e67b5 | 136 | break; |
ivo_david_michelle | 26:7f50323c0c0d | 137 | } |
ivo_david_michelle | 22:92401a4fec13 | 138 | } |
ivo_david_michelle | 22:92401a4fec13 | 139 | Thread::wait(1000); // wait for some number of miliseconds |
ivo_david_michelle | 22:92401a4fec13 | 140 | } |
ivo_david_michelle | 22:92401a4fec13 | 141 | } |
ivo_david_michelle | 22:92401a4fec13 | 142 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 143 | void counting_thread1(void const *args) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 144 | while (true) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 145 | print_count(1); |
ivo_david_michelle | 37:a983eb9fd9c5 | 146 | Thread::wait(1); |
ivo_david_michelle | 37:a983eb9fd9c5 | 147 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 148 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 149 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 150 | void counting_thread2(void const *args) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 151 | while (true) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 152 | print_count(2); |
ivo_david_michelle | 37:a983eb9fd9c5 | 153 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 154 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 155 | |
ivo_david_michelle | 15:90e07946186f | 156 | int main() |
ivo_david_michelle | 15:90e07946186f | 157 | { |
ivo_david_michelle | 29:ae765492fa8b | 158 | // ESCs requires a 100Hz frequency |
ivo_david_michelle | 29:ae765492fa8b | 159 | motor_1.period(0.01); |
ivo_david_michelle | 29:ae765492fa8b | 160 | motor_2.period(0.01); |
ivo_david_michelle | 29:ae765492fa8b | 161 | motor_3.period(0.01); |
ivo_david_michelle | 29:ae765492fa8b | 162 | motor_4.period(0.01); |
ivo_david_michelle | 22:92401a4fec13 | 163 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 164 | //Thread counting1(counting_thread1); |
ivo_david_michelle | 37:a983eb9fd9c5 | 165 | //Thread counting2(counting_thread2); |
ivo_david_michelle | 37:a983eb9fd9c5 | 166 | //counting1.set_priority(osPriorityHigh); |
ivo_david_michelle | 37:a983eb9fd9c5 | 167 | //counting2.set_priority(osPriorityHigh); |
ivo_david_michelle | 37:a983eb9fd9c5 | 168 | //Thread thread_rc(rc_thread); |
ivo_david_michelle | 28:61f7356325c3 | 169 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 170 | while (!started) { // wait until Joystick is in starting position |
ivo_david_michelle | 37:a983eb9fd9c5 | 171 | myQuadcopter.readRc(); |
ivo_david_michelle | 37:a983eb9fd9c5 | 172 | started = getLowThrust(-0.3); |
ivo_david_michelle | 27:11116aa69f32 | 173 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 174 | printf("Started!\r\n"); |
ivo_david_michelle | 30:4820042e67b5 | 175 | nLowThrust = 0; // reset for later use in controller. |
ivo_david_michelle | 27:11116aa69f32 | 176 | |
ivo_david_michelle | 22:92401a4fec13 | 177 | motor_1 = 0.1; |
ivo_david_michelle | 22:92401a4fec13 | 178 | motor_2 = 0.1; |
ivo_david_michelle | 22:92401a4fec13 | 179 | motor_3 = 0.1; |
ivo_david_michelle | 22:92401a4fec13 | 180 | motor_4 = 0.1; |
ivo_david_michelle | 4:3040d0f9e8c6 | 181 | |
ivo_david_michelle | 30:4820042e67b5 | 182 | wait(3); // hold startup duty cycle for 2 seconds |
ivo_david_michelle | 22:92401a4fec13 | 183 | |
ivo_david_michelle | 29:ae765492fa8b | 184 | // TODO assign priorities to threads, test if it really works as we expect |
ivo_david_michelle | 37:a983eb9fd9c5 | 185 | //Thread battery(battery_thread); |
ivo_david_michelle | 37:a983eb9fd9c5 | 186 | //Thread controller(controller_thread); |
ivo_david_michelle | 29:ae765492fa8b | 187 | // TODO is this needed? |
ivo_david_michelle | 37:a983eb9fd9c5 | 188 | |
ivo_david_michelle | 37:a983eb9fd9c5 | 189 | //controller.set_priority(osPriorityRealtime); |
ivo_david_michelle | 37:a983eb9fd9c5 | 190 | //thread_rc.set_priority(osPriorityRealtime); |
ivo_david_michelle | 37:a983eb9fd9c5 | 191 | int i =0; |
ivo_david_michelle | 37:a983eb9fd9c5 | 192 | while (1) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 193 | i++; |
ivo_david_michelle | 37:a983eb9fd9c5 | 194 | if (i % 100 == 0) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 195 | printf("%d\r\n", i); |
ivo_david_michelle | 37:a983eb9fd9c5 | 196 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 197 | myQuadcopter.readRc(); |
ivo_david_michelle | 37:a983eb9fd9c5 | 198 | int shutdown = getLowThrust(-0.3); |
ivo_david_michelle | 37:a983eb9fd9c5 | 199 | if (shutdown == 1) { |
ivo_david_michelle | 37:a983eb9fd9c5 | 200 | emergencyShutdown(); |
ivo_david_michelle | 37:a983eb9fd9c5 | 201 | printf("too long negative thrust! %f\r\n",myQuadcopter.getForce()); |
ivo_david_michelle | 37:a983eb9fd9c5 | 202 | shutDownLed = 1; |
ivo_david_michelle | 37:a983eb9fd9c5 | 203 | break; |
ivo_david_michelle | 37:a983eb9fd9c5 | 204 | } |
ivo_david_michelle | 37:a983eb9fd9c5 | 205 | myQuadcopter.readSensorValues(); |
ivo_david_michelle | 37:a983eb9fd9c5 | 206 | myQuadcopter.controller(); |
ivo_david_michelle | 37:a983eb9fd9c5 | 207 | motors motorsPwm = myQuadcopter.getPwm(); |
ivo_david_michelle | 37:a983eb9fd9c5 | 208 | motor_1 = motorsPwm.m1; |
ivo_david_michelle | 37:a983eb9fd9c5 | 209 | motor_2 = motorsPwm.m2; |
ivo_david_michelle | 37:a983eb9fd9c5 | 210 | motor_3 = motorsPwm.m3; |
ivo_david_michelle | 37:a983eb9fd9c5 | 211 | motor_4 = motorsPwm.m4; |
ivo_david_michelle | 37:a983eb9fd9c5 | 212 | } |
ivo_david_michelle | 0:4c04e4fd1310 | 213 | } |