Control of motors
Dependencies: MODSERIAL QEI mbed
Diff: main.cpp
- Revision:
- 9:219bfc575aa4
- Parent:
- 8:10d6f6ad03c8
--- a/main.cpp Mon Oct 01 12:26:28 2018 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,76 +0,0 @@ -#include "mbed.h" -#include "QEI.h" -#include "MODSERIAL.h" -#include "math.h" - - -MODSERIAL pc(USBTX,USBRX); -Ticker TickerReadPots; -Ticker TickerGetCounts; -QEI Encoder1(D10,D11,NC,32); -QEI Encoder2(D12,D13,NC,32); -InterruptIn PrintCounts(SW2); - - -DigitalOut DirectionPin1(D4); -DigitalOut DirectionPin2(D7); -PwmOut PwmPin1(D5); -PwmOut PwmPin2(D6); -AnalogIn potmeter1(A1); -AnalogIn potmeter2(A0); - - -volatile float Duty1; -volatile float Duty2; -volatile float MotorSignal1; -volatile float MotorSignal2; -volatile int counts1; -volatile int counts2; - -// function for reading potentiometers and set to dutycycle -void ReadPots(void) -{ - Duty1 = potmeter1.read(); // read value potentiometer 1 - Duty2 = potmeter2.read(); // read value potentiometer 2 - - MotorSignal1 = 2*Duty1 - 1; //scaling potmeter to motor control signal [0 - 1] --> [(-1) - 1] - MotorSignal2 = 1 - 2*Duty2; -} - -// printing counts to pc -void GetCounts(void) -{ - counts1 = Encoder1.getPulses(); - counts2 = Encoder2.getPulses(); - - Encoder1.reset(); - Encoder2.reset(); -} - -void Print() -{ - pc.printf("Number counts per second: motor1 = %i , motor2 = %i \r\n",counts1,counts2); -} - - -int main() -{ - pc.baud(115200); - pc.printf("Hello World!\r\n"); - PwmPin1.period_us(60); // 16.66667 kHz (default period is too slow!) - TickerReadPots.attach(&ReadPots,0.05); // every 50 milli seconds. - TickerGetCounts.attach(&GetCounts,1); //Print amount of counts every second - PrintCounts.fall(&Print); - while (true) - { - // motor 1 - DirectionPin1 = MotorSignal1 > 0.0f; //either true or false, CW or CCW - PwmPin1 = fabs(MotorSignal1); //pwm duty cycle can only be positive, floating point absolute value - - // motor 2 - DirectionPin2 = MotorSignal2 > 0.0f; - PwmPin2 = fabs(MotorSignal2); - - wait(0.01); //Do while loop a hundred times per second. - } -} \ No newline at end of file