Joseph Bradshaw / ServoOut

Library for generating servo pulses from mbed output pins

Dependents:   mbed_ES20X_Tester MadPulseCntrl ES413Integration Emaxx_Navigation ... more

Fork of SERVOGEN by Joseph Bradshaw

ServoOut Library

Assign the ServoOut object (output pin) a value in microseconds to change the servo pulse. Note that the default range is between 900 and 2100 microseconds.

Library for generating servo pulses using the Ticker class

/media/uploads/jebradshaw/mbedwsesbc_servos.jpg

/media/uploads/jebradshaw/mbed_servo_pulses.jpg

include the mbed library with this snippet

// ServoOut Class test program
// J. Bradshaw 20140925
#include "mbed.h"
#include "ServoOut.h" 
 
ServoOut servo1(p21);
ServoOut servo2(p24);
DigitalOut led1(LED1);
 
int main() {
    servo1.pulse_us = 0;        
    // spin in a main loop. flipper will interrupt it to call flip
    while(1) {
        for(float cycle=0.0;cycle<2.0*3.14159;cycle+=.003){
            //small amplitude sine wave on servo1
            servo1 = 300 * sin(cycle) + 1500;            
            //ramp up the second servo2 channel relative to cycle
            servo2 = 1000 + cycle*159; // .001/(2*PI)
            
            wait(.001); //short delay
        }
        led1 = !led1;   //toggle led1 to indicate activity
    }//while(1)
}//main

Diff: SERVOGEN.h

Revision:
1:7d669a801bb0
Parent:
0:67dd4036010a
Child:
2:44766ee77ce0
diff -r 67dd4036010a -r 7d669a801bb0 SERVOGEN.h
--- a/SERVOGEN.h	Fri Sep 26 19:22:18 2014 +0000
+++ b/SERVOGEN.h	Fri Sep 26 19:47:23 2014 +0000
@@ -1,5 +1,34 @@
-// Uses attach_us to generate servo pulse on single output pin
 // J. Bradshaw 20140925
+/** SERVOGEN Class for Generating servo pulses on single output pin
+*
+* Example:
+* @code
+*#include "mbed.h"
+*#include "SERVOGEN.h" 
+* 
+*SERVOGEN servo1(p21);
+*SERVOGEN servo2(p24);
+*DigitalOut led1(LED1);
+* 
+*int main() {
+*    servo1.pulse_us = 0;        
+*    // spin in a main loop. flipper will interrupt it to call flip
+*    while(1) {
+*        for(float cycle=0.0;cycle<2.0*3.14159;cycle+=.003){
+*            //small amplitude sine wave on servo1
+*            servo1.pulse_us = 300 * sin(cycle) + 1500;            
+*            //ramp up the second servo2 channel relative to cycle
+*            servo2.pulse_us = 1000 + cycle*159; // .001/(2*PI)
+*            
+*            wait(.001); //short delay
+*        }
+*        led1 = !led1;   //toggle led1 to indicate activity
+*    }//while(1)
+*}//main
+*
+*@endcode
+*/
+
 #ifndef MBED_SERVOGEN_H
 #define MBED_SERVOGEN_H