Example of using threads to run different actions happening at the same time.
Fork of Fa2018-es200-1121-3321-thread-example by
main.cpp
- Committer:
- m214962
- Date:
- 2018-10-23
- Revision:
- 8:990a1c27a5da
- Parent:
- 7:b7257f01ced7
File content as of revision 8:990a1c27a5da:
/*
ES200 Project 2 thread use
Rock em Sock em 2018
Note that this uses mbed OS 5 vice OS 2.
*/
#include "mbed.h"
#include "rtos.h"
#include "stdio.h"
#include "Motor.h"
#include "Servo.h"
// Declare some stuff
DigitalIn sw1(p17); // switch for activating led5
DigitalIn sw2(p16); // switch for activating servo
DigitalIn sw3(p20); // switch for activating servo2
DigitalIn sw4(p19); // switch for led4
DigitalOut led1(p5); // status LED for motor
DigitalOut led2(p6); // status LED for sw2
DigitalOut led3(p7); // status LED for sw3
DigitalOut led4(p8); // status LED for sw4
DigitalOut led5(p11); //status LED for sw1
DigitalOut heartbeat(LED4); // heartbeat LED adds visual effects
Motor m(p26,p30,p29);
Servo s1(p21);
Servo s2(p22);
Thread m_thread; // NEW IN mbed OS 5, threads are used to (sorta) do multiple things at once
Thread s1_thread; //creates thread for servo
Thread s2_thread; // creates thread for servo2
/** Callback for executing a simple motor action. When sw1 is high,
* the motor turns forward, otherwise the motor turns off.
*/
void m_callback(void); // This function will be run within the corresponding thread
/** Simple callback for servo motion. When sw2 is high, the servo steps right,
* otherwise it steps left. If it hits the ends it stays there.
*/
void s1_callback(void);
void s2_callback(void);
// main() runs in its own thread in the OS
int main() {
// startup things
printf("ES200 Project 2 Rockem Sockem\n");
s1.calibrate(0.0009,90.0); // calibrate servo s1 once at startup
s2.calibrate(0.0009,90.0); //calibrate servo s2 once at startup
m.speed(0.0); // set motor speed to zero at startup
// start tasks
printf("In the left corner: MIDN Slappy weighing 0.02 lbs.\n In the right corner: MIDN Hitme weighing 0.021 lbs.\n");
m_thread.start(callback(m_callback)); // starts the motor thread going
s1_thread.start(callback(s1_callback)); // starts the servo thread going
s2_thread.start(callback(s2_callback)); //starts the servo2 thread going
printf("\"ding ding ding\" Fight!\n");
// main loop
while(1){
heartbeat = !heartbeat; // blink heartbeat once a second
//ThisThread::sleep_for(1000);
Thread::wait(500+rand()%1000);
// motor or servo stuff not needed here because they are
// running in their own threads.
} // main loop
} // main()
void m_callback(void){
printf("THE fighters are moving back and forth like dancers!!\n");
while(1) {
led1.write(1); // light a light for entertaining purposes
m.speed(-0.45); // spin motor ahead to move players together
wait (0.65); //time of motor movement
m.speed(0.0); //stop players when they are close.
wait (3+rand()%5); //let them fight for a random amount of time
led1.write(0);
m.speed(0.45); // move the players back
wait (1.5); //time of opposite motor movement
if (sw4.read()) {
led4.write(1);
}
if (sw1.read()) {
led5.write(1);
}
//ThisThread::sleep_for(200); // this thread executes 100x a second
Thread::wait(50); //possibly change to small or erase
} // while(1)
} // m_callback()
void s1_callback(void){
printf("Slappy threw a punch!\n");
while(1){
if (sw2.read()){
led2.write(1); // light a light for entertaining purposes
s1.write(s1.read()+0.5); // move servo a step to right
}
else{
led2.write(0);
s1.write(0.0); // move servo a step to left
}
//ThisThread::sleep_for(200); // this thread executes 100x a second
Thread::wait(50); //Not used so that switches move players immediately - - - may have to use so that switches can move independently
} // while(1)
} // s1_callback()
void s2_callback(void){
printf("Hitme is fighting back!\n");
while(1){
if (sw3.read()){
led3.write(1); // light a light for entertaining purposes
s2.write(s2.read()+0.5); // move servo a step to right
}
else{
led3.write(0);
s2.write(0.0); // move servo a step to left
}
//ThisThread::sleep_for(200); // this thread executes 100x a second
Thread::wait(50); //possibly change
} // while(1)
} // s2_callback()
