Matteo Terruzzi / ESC

ESC class used to controll standard Electronic Speed Controllers for brushless motors of RC models

Dependents:   MTQuadControl Base_Hybrid_V2 base_rekam_darurat_v1 Base_Hybrid_Latihan_Ok_Hajar_servo_pwm ... more

Simple ESC usage example

#include "mbed.h"
#include "esc.h" //include the ESC class


int main()
{
    ESC esc1(p26); //declare the ESC as connected to pin p26.
    float throttle_var = 0.5 //that means 50%.
        
    while(1)
    {
        //... update throttle_var ...
    
        esc1 = throttle_var; //memorize the throttle value (it doesn't send it to the ESC).
        
        //... do whatever you want - e.g. call esc1.setThrottle(throttle_var) again ...
        
        esc1(); //actually sets the throttle to the ESC.
        
        wait_ms(20);  //20ms is the default period of the ESC pwm; the ESC may not run faster.
    }
}

esc.cpp

Committer:
MatteoT
Date:
2013-07-19
Revision:
1:735702ea5519
Parent:
0:116260c66d88

File content as of revision 1:735702ea5519:

#include "mbed.h"
#include "esc.h"

ESC::ESC(const PinName pwmPinOut, const int period)
        : esc(pwmPinOut), period(period), throttle(1000)
{
    esc.period_ms(period);
    esc.pulsewidth_us(throttle);
}

bool ESC::setThrottle (const float t)
{
    if (t >= 0.0 && t <= 1.0) {       // qualify range, 0-1
        throttle = 1000.0*t + 1000;     // map to range, 1-2 ms (1000-2000us)
        return true;
    }
    return false;
}
bool ESC::operator= (const float t){
    return this->setThrottle(t);
}

float ESC::getThrottle () const{
    return throttle;
}
ESC::operator float () const{
    return this->getThrottle();
}

void ESC::pulse ()
{
    esc.pulsewidth_us(throttle);
}
void ESC::operator() ()
{
    this->pulse();
}