Script voor aansturen motoren
Dependencies: Encoder HIDScope MODSERIAL mbed-dsp mbed
Diff: main.cpp
- Revision:
- 3:dcc4cebba0d7
- Parent:
- 2:11076f69e0a7
- Child:
- 4:db3dad7e53e3
--- a/main.cpp Tue Oct 21 13:48:51 2014 +0000 +++ b/main.cpp Wed Oct 22 13:04:35 2014 +0000 @@ -13,75 +13,57 @@ #define M2_PWM PTA5 //blauw #define M2_DIR PTA4 //groen -//#define POT_AVG 50 +Serial pc(USBTX, USBRX); +DigitalOut led1(LED_RED); + + void clamp(float * in, float min, float max); float pid(float setpoint, float measurement); volatile bool looptimerflag; -//float potsamples[POT_AVG]; HIDScope scope(6); + void setlooptimerflag(void) { looptimerflag = true; } + + int main() -{ //Let op dat de jumpers goed staan als het motortje niet wilt draaien. De E1 jumper moet onder de nummer 7 pin. De locatie van de M1 pin - //bepaalt of de motor CW of CCW draait. +{ + //Let op dat de jumpers goed staan als het motortje niet wilt draaien. De E1 jumper moet onder de nummer 7 pin. De locatie van de M1 pin + //bepaalt of de motor CW of CCW draait. //start Encoder-> first pin should be PTDx or PTAx, second pin doesn't matter - AnalogIn potmeter(PTC2); + + //motor 25D Encoder motor1(PTD3,PTD5); //wit, geel - PwmOut pwm_motor1(M1_PWM); // PTC8, blauw, /*PwmOut to motor driver*/ + PwmOut pwm_motor1(M2_PWM); // PTC8, blauw, /*PwmOut to motor driver*/ pwm_motor1.period_us(75); //10kHz PWM frequency - DigitalOut motordir1(M1_DIR); //PTC9, groen - - + DigitalOut motordir1(M2_DIR); //PTC9, groen + +//motor2 37D Encoder motor2(PTD2, PTD0); //wit, geel - PwmOut pwm_motor2(M2_PWM); //PTA5, blauw + PwmOut pwm_motor2(M1_PWM); //PTA5, blauw pwm_motor2.period_us(75); - DigitalOut motordir2(M2_DIR); //PTA4, groen - - Ticker looptimer; - looptimer.attach(setlooptimerflag,TSAMP); - - + DigitalOut motordir2(M1_DIR); //PTA4, groen + + while(1) { - int16_t setpoint; - float new_pwm; - /*wait until timer has elapsed*/ - while(!looptimerflag); - looptimerflag = false; //clear flag - /*potmeter value: 0-1*/ - setpoint = (potmeter.read()-.5)*500; - /*new_pwm = (setpoint - motor1.getPosition())*.001; -> P action*/ - new_pwm = pid(setpoint, motor1.getPosition()); - clamp(&new_pwm, -1,1); - scope.set(0, setpoint); - scope.set(4, new_pwm); - scope.set(5, motor1.getPosition()); - // ch 1, 2 and 3 set in pid controller */ - scope.send(); - if(new_pwm < 0) - motordir1 = 0; - else - motordir1 = 1; - pwm_motor1.write(abs(new_pwm)); - if(new_pwm < 0) - motordir2 = 0; - else - motordir2 = 1; - pwm_motor2.write(abs(new_pwm)); + pwm_motor1.write(1); + wait(3); + pwm_motor1.write(0); + wait(3); } } - //clamps value 'in' to min or max when exceeding those values //if you'd like to understand the statement below take a google for //'ternary operators'. void clamp(float * in, float min, float max) { - *in > min ? *in < max? : *in = max: *in = min; +*in > min ? *in < max? : *in = max: *in = min; }