Problem with Barometric pressure software and LCD Keypad Shield V1.1
[email protected] 2014-02-02 12:02:03 4637 Views0 Replies I have one little problem.
I would like to use LCD Keypad Schield V1.1 (DF Robot) over Arduino Uno to communicate with BMP085 pressure sensor, but it is impossible to get data from it for me.
I would use the following software :
I have the following problem:
when I transfer the sketch to arduino uno I see no data on Display of my LCD Keypad shield.
In contrast , when the Adafruit_MPL115A2 library is not activate , I see the hystogram and both Temperature=0*C and pressure =0KP.
Sketch, when the Adafruit_MPL115A2 library is not activate.
Many Thanks
I would like to use LCD Keypad Schield V1.1 (DF Robot) over Arduino Uno to communicate with BMP085 pressure sensor, but it is impossible to get data from it for me.
I would use the following software :
Code: Select all
/*
************************** Barometric (atmospheric pressure) Arduino project *************************
* LINK: http://coolarduino.wordpress.com/2013/04/10/barometric-atmospheric-pressure-arduino-project/
*
* Created for Arduino UNO board: Anatoly Kuzmenko 10 April 2013
* [email protected]
*
* SOFTWARE COMPILES USING Arduino 1.0.4 IDE (Tested on Linux OS only).
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, dfrobot FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
*
* Copyright (C) 2013 Anatoly Kuzmenko.
* All Rights Reserved.
********************************************************************************************
*/
#include <Wire.h>
#include <Adafruit_MPL115A2.h>
#include <LiquidCrystal.h>
#define ABS_MINIM 97.325 // absolute pressure minimum, kPa
#define UPD_HISTR 7200 // update history interval in sec, 2 hours
LiquidCrystal lcd( 8, 9, 4, 5, 6, 7);
Adafruit_MPL115A2 mpl115a2;
byte prs_bars[8][8];// Custom characters array
byte prs_hist[8] = { 8, 11, 15, 7, 3, 0, 5, 8}; // Start-up "demo" data.
volatile uint8_t sec_tick = 0;
uint16_t sec_cntr = 0;
float lpf_pres = 0.0;
float lpf_temp = 0.0;
void setup(void)
{
// Serial.begin(115200);
mpl115a2.begin();
lcd.begin(16, 2);
for (uint8_t j = 0; j < 8; j++)
{
for (uint8_t i = 0; i < 8; i++)
{
if ( i <= j ) prs_bars[j][7-i] = B11111;
else prs_bars[j][7-i] = B00000;
}
}
for ( uint8_t i = 0; i < 8; i++)
{
lcd.createChar(i, prs_bars[i]);
}
for ( uint8_t j = 0; j < 16; j++) // Taking time for sensor to settle
{
print_Bars( j, j );
delay(500);
}
lcd.clear();
lcd.setCursor( 3, 0);
lcd.print("*Magician*");
lcd.setCursor( 5, 1);
lcd.print("ver. 2a");
delay(2000);
lcd.clear();
for ( uint8_t i = 0; i < 8; i++)
{
print_Bars( i, prs_hist[i]); // Show nice picture
}
lpf_pres = mpl115a2.getPressure();
lpf_temp = mpl115a2.getTemperature();
/* Set up TIMER 1 - 1 seconds tick-er */
TIMSK1 = 0x00;
TCCR1A = 0;
TCCR1B = 0;
TCCR1C = 0;
TCCR1A = ((1<<WGM11) | (1<<WGM10)); // Mode 15, Fast PWM
TCCR1B = ((1<<WGM13) | (1<<WGM12)); // Mode 15, Fast PWM
TCCR1B |= ((1<<CS10) | (1<<CS12)); // clk/1024 prescaling.
OCR1A = 15625; // 1 sec.
TCNT1 = 0;
TIFR1 |= (1<<TOV1);
TIMSK1 |= (1<<TOIE1);
}
void loop(void)
{
float pressureKPA = 0, temperatureC = 0;
uint16_t temp;
if (sec_tick) {
pressureKPA = mpl115a2.getPressure();
// Serial.print("Pressure (kPa): "); Serial.print(pressureKPA, 4); Serial.println(" kPa");
temperatureC = mpl115a2.getTemperature();
// Serial.print("Temp (*C): "); Serial.print(temperatureC, 1); Serial.println(" *C");
lpf_pres = 0.99 * lpf_pres + 0.01 * pressureKPA;
lpf_temp = 0.99 * lpf_temp + 0.01 * temperatureC;
lcd.setCursor( 9, 1);
lcd.print( lpf_temp, 2);
lcd.print("*C");
lcd.setCursor( 9, 0);
lcd.print( lpf_pres, 1);
lcd.print("kP");
if (sec_cntr > UPD_HISTR)
{
lcd.clear();
for ( uint8_t i = 0; i < 7; i++)
{
prs_hist[i] = prs_hist[i+1];
print_Bars( i, prs_hist[i]);
}
temp = 2 *(lpf_pres - ABS_MINIM);
prs_hist[7] = temp;
print_Bars( 7, prs_hist[7]);
sec_cntr = 0;
}
sec_tick = 0;
}
}
ISR(TIMER1_OVF_vect)
{
sec_tick = 1;
sec_cntr++;
}
void print_Bars( uint8_t location, uint8_t value )
{
if ( value < 8 )
{
lcd.setCursor( location, 1);
lcd.write(value);
}
else
{
lcd.setCursor(location, 1);
lcd.write(7);
lcd.setCursor(location, 0);
lcd.write(value - 8);
}
}I have the following problem:
when I transfer the sketch to arduino uno I see no data on Display of my LCD Keypad shield.
In contrast , when the Adafruit_MPL115A2 library is not activate , I see the hystogram and both Temperature=0*C and pressure =0KP.
Sketch, when the Adafruit_MPL115A2 library is not activate.
Code: Select all
Can You help me to resolve this problem? :'(/*
************************** Barometric (atmospheric pressure) Arduino project *************************
* LINK: http://coolarduino.wordpress.com/2013/04/10/barometric-atmospheric-pressure-arduino-project/
*
* Created for Arduino UNO board: Anatoly Kuzmenko 10 April 2013
* [email protected]
*
* SOFTWARE COMPILES USING Arduino 1.0.4 IDE (Tested on Linux OS only).
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, dfrobot FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
*
* Copyright (C) 2013 Anatoly Kuzmenko.
* All Rights Reserved.
********************************************************************************************
*/
#include <Wire.h>
//#include <Adafruit_MPL115A2.h>
#include <LiquidCrystal.h>
#define ABS_MINIM 97.325 // absolute pressure minimum, kPa
#define UPD_HISTR 7200 // update history interval in sec, 2 hours
LiquidCrystal lcd( 8, 9, 4, 5, 6, 7);
//Adafruit_MPL115A2 mpl115a2;
byte prs_bars[8][8];// Custom characters array
byte prs_hist[8] = { 8, 11, 15, 7, 3, 0, 5, 8}; // Start-up "demo" data.
volatile uint8_t sec_tick = 0;
uint16_t sec_cntr = 0;
float lpf_pres = 0.0;
float lpf_temp = 0.0;
void setup(void)
{
// Serial.begin(115200);
// mpl115a2.begin();
lcd.begin(16, 2);
for (uint8_t j = 0; j < 8; j++)
{
for (uint8_t i = 0; i < 8; i++)
{
if ( i <= j ) prs_bars[j][7-i] = B11111;
else prs_bars[j][7-i] = B00000;
}
}
for ( uint8_t i = 0; i < 8; i++)
{
lcd.createChar(i, prs_bars[i]);
}
for ( uint8_t j = 0; j < 16; j++) // Taking time for sensor to settle
{
print_Bars( j, j );
delay(500);
}
lcd.clear();
lcd.setCursor( 3, 0);
lcd.print("*Magician*");
lcd.setCursor( 5, 1);
lcd.print("ver. 2a");
delay(2000);
lcd.clear();
for ( uint8_t i = 0; i < 8; i++)
{
print_Bars( i, prs_hist[i]); // Show nice picture
}
// lpf_pres = mpl115a2.getPressure();
// lpf_temp = mpl115a2.getTemperature();
/* Set up TIMER 1 - 1 seconds tick-er */
TIMSK1 = 0x00;
TCCR1A = 0;
TCCR1B = 0;
TCCR1C = 0;
TCCR1A = ((1<<WGM11) | (1<<WGM10)); // Mode 15, Fast PWM
TCCR1B = ((1<<WGM13) | (1<<WGM12)); // Mode 15, Fast PWM
TCCR1B |= ((1<<CS10) | (1<<CS12)); // clk/1024 prescaling.
OCR1A = 15625; // 1 sec.
TCNT1 = 0;
TIFR1 |= (1<<TOV1);
TIMSK1 |= (1<<TOIE1);
}
void loop(void)
{
float pressureKPA = 0, temperatureC = 0;
uint16_t temp;
if (sec_tick) {
//pressureKPA = mpl115a2.getPressure();
// Serial.print("Pressure (kPa): "); Serial.print(pressureKPA, 4); Serial.println(" kPa");
// temperatureC = mpl115a2.getTemperature();
// Serial.print("Temp (*C): "); Serial.print(temperatureC, 1); Serial.println(" *C");
lpf_pres = 0.99 * lpf_pres + 0.01 * pressureKPA;
lpf_temp = 0.99 * lpf_temp + 0.01 * temperatureC;
lcd.setCursor( 9, 1);
lcd.print( lpf_temp, 2);
lcd.print("*C");
lcd.setCursor( 9, 0);
lcd.print( lpf_pres, 1);
lcd.print("kP");
if (sec_cntr > UPD_HISTR)
{
lcd.clear();
for ( uint8_t i = 0; i < 7; i++)
{
prs_hist[i] = prs_hist[i+1];
print_Bars( i, prs_hist[i]);
}
temp = 2 *(lpf_pres - ABS_MINIM);
prs_hist[7] = temp;
print_Bars( 7, prs_hist[7]);
sec_cntr = 0;
}
sec_tick = 0;
}
}
ISR(TIMER1_OVF_vect)
{
sec_tick = 1;
sec_cntr++;
}
void print_Bars( uint8_t location, uint8_t value )
{
if ( value < 8 )
{
lcd.setCursor( location, 1);
lcd.write(value);
}
else
{
lcd.setCursor(location, 1);
lcd.write(7);
lcd.setCursor(location, 0);
lcd.write(value - 8);
}
}Many Thanks
