Велосипедный Спидометр На Arduino

[Stels]

Велосипедный спидометр на Arduino

я немного переделал код для км/ч, сейчас не могу проверить, правильно ли получилось?

//bike speedometer
//by Amanda Ghassaei 2012
//http://www.instructables.com/id/Arduino-Bike-Speedometer/

/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
*/

//outputs speed of bicycle to LCD

//calculations
//tire radius ~ 13.5 inches
//circumference = pi*2*r =~85 inches
//max speed of 35mph =~ 616inches/second
//max rps =~7.25

#define reed A0//pin connected to read switch
#include <LiquidCrystal.h>//установил обычный дисплей
LiquidCrystal lcd(12, 11, 5, 4, 3, 6);
//storage variables

int reedVal;
long timer = 0;// time between one full rotation (in ms)
float mph = 0.00;
float circumference;
boolean backlight;

int maxReedCounter = 100;//min time (in ms) of one rotation (for debouncing)
int reedCounter;


void setup(){

reedCounter = maxReedCounter;
circumference = 2095; //здесь явно задал окружность
pinMode(1,OUTPUT);//tx
pinMode(2,OUTPUT);//backlight switch
pinMode(reed, INPUT);
lcd.begin(16, 2);

Serial.write(12);//clear

// TIMER SETUP- the timer interrupt allows preceise timed measurements of the reed switch
//for mor info about configuration of arduino timers see http://arduino.cc/playground/Code/Timer1
cli();//stop interrupts

//set timer1 interrupt at 1kHz
TCCR1A = 0;// set entire TCCR1A register to 0
TCCR1B = 0;// same for TCCR1B
TCNT1 = 0;
// set timer count for 1khz increments
OCR1A = 1999;// = (1/1000) / ((1/(16*10^6))*8) - 1
// turn on CTC mode
TCCR1B |= (1 << WGM12);
// Set CS11 bit for 8 prescaler
TCCR1B |= (1 << CS11);
// enable timer compare interrupt
TIMSK1 |= (1 << OCIE1A);

sei();//allow interrupts
//END TIMER SETUP

}



ISR(TIMER1_COMPA_vect) {//Interrupt at freq of 1kHz to measure reed switch
reedVal = digitalRead(reed);//get val of A0
if (reedVal){//if reed switch is closed
if (reedCounter == 0){//min time between pulses has passed
mph = (3.6*float(circumference))/float(timer);//calculate miles per hour // и переделал формулу
timer = 0;//reset timer
reedCounter = maxReedCounter;//reset reedCounter
}
else{
if (reedCounter > 0){//don't let reedCounter go negative
reedCounter -= 1;//decrement reedCounter
}
}
}
else{//if reed switch is open
if (reedCounter > 0){//don't let reedCounter go negative
reedCounter -= 1;//decrement reedCounter
}
}
if (timer > 2000){
mph = 0;//if no new pulses from reed switch- tire is still, set mph to 0
}
else{
timer += 1;//increment timer
}
}

void displayMPH(){
lcd.clear();//clear
lcd.print("Speed =");
lcd.setCursor(0, 1);
lcd.print(mph);
//Serial.write(" MPH ");
//Serial.write("0.00 MPH ");
}

void loop(){
//print mph once a second
displayMPH();
delay(1000);
}

как можно добавить одометр?

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[Stels]

версия номер два

//bike speedometer

//by Amanda Ghassaei 2012

//<a href="http://www.instructables.com/id/Arduino-Bike-Speedometer/" rel="nofollow">http://www.instructables.com/id/Arduino-Bike-Speedometer/</a>

/*

* This program is free software; you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation; either version 3 of the License, or

* (at your option) any later version.

*

*/

//outputs speed of bicycle to LCD

//calculations

//tire radius ~ 13.5 inches

//circumference = pi*2*r =~85 inches

//max speed of 35mph =~ 616inches/second

//max rps =~7.25

#define reed A0//pin connected to read switch

#include <LiquidCrystal.h>//установил обычный дисплей

LiquidCrystal lcd(12, 11, 5, 4, 3, 6);

//storage variables

int reedVal;

int odo;//количество оборотов колеса

long timer = 0;// time between one full rotation (in ms)

float mph = 0.00;

float circumference;

boolean backlight;

char vivod;

int maxReedCounter = 100;//min time (in ms) of one rotation (for debouncing)

int reedCounter;

void setup(){

odo=0;

reedCounter = maxReedCounter;

circumference = 2095; //здесь явно задал окружность

pinMode(1,OUTPUT);//tx

pinMode(2,OUTPUT);//backlight switch

pinMode(reed, INPUT);

lcd.begin(16, 2);

Serial.write(12);//clear

// TIMER SETUP- the timer interrupt allows preceise timed measurements of the reed switch

//for mor info about configuration of arduino timers see <a href="http://arduino.cc/playground/Code/Timer1" title="http://arduino.cc/playground/Code/Timer1" rel="nofollow">http://arduino.cc/playground/Code/Timer1</a>

cli();//stop interrupts

//set timer1 interrupt at 1kHz

TCCR1A = 0;// set entire TCCR1A register to 0

TCCR1B = 0;// same for TCCR1B

TCNT1 = 0;

// set timer count for 1khz increments

OCR1A = 1999;// = (1/1000) / ((1/(16*10^6))*8) - 1

// turn on CTC mode

TCCR1B |= (1 << WGM12);

// Set CS11 bit for 8 prescaler

TCCR1B |= (1 << CS11);

// enable timer compare interrupt

TIMSK1 |= (1 << OCIE1A);

sei();//allow interrupts

//END TIMER SETUP

}

ISR(TIMER1_COMPA_vect) {//Interrupt at freq of 1kHz to measure reed switch

reedVal = digitalRead(reed);//get val of A0

if (reedVal){//if reed switch is closed

if (reedCounter == 0){//min time between pulses has passed

mph = (3.6*float(circumference))/float(timer);//calculate miles per hour // и переделал формулу

odo++;

timer = 0;//reset timer

reedCounter = maxReedCounter;//reset reedCounter

}

else{

if (reedCounter > 0){//don't let reedCounter go negative

reedCounter -= 1;//decrement reedCounter

}

}

}

else{//if reed switch is open

if (reedCounter > 0){//don't let reedCounter go negative

reedCounter -= 1;//decrement reedCounter

}

}

if (timer > 2000){

mph = 0;//if no new pulses from reed switch- tire is still, set mph to 0

}

else{

timer += 1;//increment timer

}

}

void displayMPH(){

lcd.clear();//clear

lcd.print("Speed ");

lcd.setCursor(6, 0);

lcd.print(mph);

lcd.setCursor(0, 1);

lcd.print(String(byte(odo*circumference/1000000))+"km "+int(odo*circumference/1000)+"m");

/* lcd.setCursor(9, 1);

lcd.print(int(odo*circumference/1000));*/

}

void loop(){

//print mph once a second

displayMPH();

delay(1000);

}

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