Basic funcitonality
Dependencies: mbed mbed-rtos SevenSegmentSerial HC_SR04_Ultrasonic_Library
main.cpp
- Committer:
- glanier9
- Date:
- 2021-04-19
- Revision:
- 1:28e137ae5af7
- Parent:
- 0:0747159bf07d
- Child:
- 2:8c29e1aaaff0
File content as of revision 1:28e137ae5af7:
//************************** // Mbed to Raspberry Pi //************************** // 0 - pass starting line // 1 - pass checkpoint 1 // 2 - pass checkpoint 2 // ... // 9 - end race #include "mbed.h" #include "ultrasonic.h" #include "rtos.h" Thread thread1; Serial pc(USBTX,USBRX); DigitalOut led0(p5); DigitalOut led1(p6); DigitalOut led2(p7); //Ticker sound; PwmOut speaker(p25); int width[3]; //width of each checkpoint, mm int sensitivity = 5; //sensitivity, adjust with testing, mm int total_laps = 3; int current_lap = 0; int frequency = 500; int i = 500; int setup[3] = {1,1,1}; //state machine, tracks current position in track enum state_type {start,past_start,past_cp1,past_cp2}; state_type track_state = start; void play_audio() { speaker =0.5; //50% duty cycle - max volume Thread::wait(3); speaker=0.0; // turn off audio } //executed when crossing starting line void start_line(int distance) { if (setup[0]) { pc.printf("Setup\n"); pc.printf("%d",distance); width[0] = distance; setup[0] = !setup[0]; } if (width[0] - distance >= sensitivity) { pc.printf("Past start line\n"); led0 = 1; led1 = 0; led2 = 0; current_lap++; pc.printf("%d\n",current_lap); track_state = past_start; pc.putc('0'); thread1.start(&play_audio); } } //executed when passing checkpoint 1 void checkpoint1(int distance) { if (setup[1]) { pc.printf("Setup\n"); pc.printf("%d",distance); width[1] = distance; setup[1] = !setup[1]; } pc.printf("Past Checkpoint 1\n"); if (width[1] - distance >= sensitivity) { led1 = 1; track_state = past_cp1; pc.putc('1'); } } //executed when passing checkpoint 2 void checkpoint2(int distance) { if (setup[2]) { pc.printf("Setup\n"); pc.printf("%d",distance); width[2] = distance; setup[2] = !setup[2]; } pc.printf("Past Checkpoint 2\n"); if (width[2] - distance >= sensitivity) { led2 = 1; track_state = past_cp2; pc.putc('2'); } } ultrasonic sonar0(p15,p16,0.1,0.1,&start_line); //starting line ultrasonic sonar1(p17,p18,0.1,0.1,&checkpoint1); //checkpoint 1 ultrasonic sonar2(p21,p22,0.1,0.1,&checkpoint2); //checkpoint 2 int main() { speaker.period(1.0/frequency); // 500hz period sonar0.startUpdates(); sonar1.startUpdates(); sonar2.startUpdates(); sonar0.checkDistance(); sonar1.checkDistance(); sonar2.checkDistance(); while(1) { switch (track_state) { case start: sonar0.checkDistance(); break; case past_start: sonar1.checkDistance(); break; case past_cp1: sonar2.checkDistance(); break; case past_cp2: sonar0.checkDistance(); break; } if (current_lap > total_laps) { pc.putc('9'); while(1) { pc.printf("Race Over"); Thread::wait(0.05); } } Thread::wait(0.05); } }