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Dependencies: FastPWM HIDScope MODSERIAL QEI mbed
main.cpp
- Committer:
- AppelSab
- Date:
- 2018-10-16
- Revision:
- 7:2440100fe04c
- Parent:
- 6:ae2ae12328b7
- Child:
- 8:61a3a5fb4c37
File content as of revision 7:2440100fe04c:
#include "mbed.h" #include "FastPWM.h" #include "MODSERIAL.h" #include "HIDScope.h" #include "QEI.h" AnalogIn potmeter1(PTC10); AnalogIn potmeter2(PTC11); MODSERIAL pc(USBTX, USBRX); //D4 is a digital input for the microcontroller, so should be an digitalOut //from the K64F. It will tell the motor shiel to let Motor1 turn clockwise //of count clockwise (CW of CCW). D4 for motor 2 DigitalOut directionM2(D7); //D5 is a PWM input for the motor controller and determines the PWM signal //that the motor controller gives to Motor 1. Higher PWM, higer average voltage. // D6 for motor 2 FastPWM motor1_pwm(D5); // For Encoder reading QEI Encoder1(D11, D10, NC, 4200) ; // Encoder motor 1, (pin 1A, pin 1B, index pin(not used), counts/rev) // Voor het laten zien van de data op de pc. HIDScope scope(1); // Aantal kanalen wat doorgegeven wordt aan de hidscope Ticker AInTicker; // Declare variables for motor float pos; float potwaarde1; float potwaarde2; const float pi = 3.14159265359; int counts1; float theta1; void ReadAnalogIn() { scope.set(0,pos); // Zet de potwaarde in de eerste plot bij de HID scope. Deze wordt automatisch tegen de tijd geplot scope.send(); // Zendt de waardes naar de pc } float ReadEncoder() { // Get counts counts1 = Encoder1.getPulses(); // Counts of outputshaft of motor 1 // Get angles theta1 = (float(counts1)/4200) * 2*pi; // Angle of outputshaft of motor 1 pc.baud(115200); pc.printf("Hoek motor 1 = %0.2f rad \n \r", theta1); return theta1; } float P_controller(float error) { float Kp = 2.0; float U1 = Kp*error; return U1; } int main(void) { motor1_pwm.period_us(60); // Period is 60 microseconde AInTicker.attach(&ReadAnalogIn,0.01f); // Elke 0.01 sec. Lees de analoge waarde while(true){ potwaarde1 = potmeter1.read(); // Lees de potwaardes uit. Tussen 0 en 1 potwaarde2 = potmeter2.read(); pos = (potwaarde1*2 -1) * 2*pi; // Scale van -1 tot 1 ipv. 0 tot 1 theta1 = ReadEncoder(); float error = pos - theta1; float U1 = P_controller(error); // Gebruik de absolute waarde van de scaled U waardes als input voor de motor. // Negatieve waardes kunnen niet naar de motor gestuurd worden. motor1_pwm.write(fabs(U1)); float directionM1 = U1 > 0.0f; //either true or false wait(0.002f); } }