main.cpp

00001 // Calibrate and arm ESC and then sweep through motor speed range
00002 // To run: Hold down reset on mbed and power up ESC motor supply
00003 // Wait for three power up beeps from ESC, then release reset (or apply power) on mbed
00004 // See https://github.com/bitdump/BLHeli/blob/master/BLHeli_S%20SiLabs/BLHeli_S%20manual%20SiLabs%20Rev16.x.pdf
00005 // for info on beep codes and calibration
00006 #include "mbed.h"
00007 #include "Servo.h"
00008 PwmOut ledf(LED1); //throttle up test led with PWM dimming
00009 PwmOut ledr(LED2); //throttle down test led with PWM dimming
00010 
00011 Servo myservo(p21);
00012 
00013 int main()
00014 {
00015     myservo = 0.0;
00016     ledf = ledr = 1;
00017     wait(0.5); //ESC detects signal
00018 //Required ESC Calibration/Arming sequence  
00019 //sends longest and shortest PWM pulse to learn and arm at power on
00020     myservo = 1.0; //send longest PWM
00021     ledf = ledr = 0;
00022     wait(8);
00023     myservo = 0.0; //send shortest PWM
00024     wait(8);
00025 //ESC now operational using standard servo PWM signals
00026     while (1) {
00027         for (float p=0.0; p<=1.0; p += 0.025) { //Throttle up slowly to full throttle
00028             myservo = p;
00029             ledf = p;
00030             wait(1.0);
00031         }
00032         myservo = 0.0; //Motor off
00033         ledf = ledr = 0;
00034         wait(4.0);
00035         for (float p=1.0; p>=0.0; p -= 0.025) { //Throttle down slowly from full throttle
00036             myservo = p;
00037             ledr = p;
00038             wait(1.0);
00039         }
00040         myservo = 0.0; //Motor off
00041         ledf = ledr = 0;
00042         wait(4.0);
00043     }
00044 }