Hello Hashim

use this code, i have some error line 324-325!
“hWatherCm = H_POZZO – microseconds_to_centimeters(duration);” this one

error code is this
C:\Users\HANSEOKHWAN\Documents\Arduino\sketch_jul09a\sketch_jul09a.ino:10:0: warning: “PI” redefined

#define PI 3.1415926535898

^

In file included from sketch\sketch_jul09a.ino.cpp:1:0:

C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/Arduino.h:47:0: note: this is the location of the previous definition

#define PI 3.1415926535897932384626433832795

^

sketch_jul09a:60: error: stray ‘\342’ in program

newChar[i] = code[n ?? 1];

^

sketch_jul09a:60: error: stray ‘\200’ in program

sketch_jul09a:60: error: stray ‘\223’ in program

sketch_jul09a:324: error: stray ‘\342’ in program

hWatherCm = H_POZZO ?? microseconds_to_centimeters(duration);

^

sketch_jul09a:324: error: stray ‘\200’ in program

sketch_jul09a:324: error: stray ‘\223’ in program

C:\Users\HANSEOKHWAN\Documents\Arduino\sketch_jul09a\sketch_jul09a.ino: In function ‘byte* getChar(int, byte*)’:

sketch_jul09a:60: error: expected ‘]’ before numeric constant

newChar[i] = code[n ?? 1];

^

sketch_jul09a:60: error: expected ‘;’ before numeric constant

C:\Users\HANSEOKHWAN\Documents\Arduino\sketch_jul09a\sketch_jul09a.ino: In function ‘void print_histogram(int)’:

sketch_jul09a:270: error: expected ‘;’ before numeric constant

for (i = 0; i 0)

^

C:\Users\HANSEOKHWAN\Documents\Arduino\sketch_jul09a\sketch_jul09a.ino: In function ‘long int read_height()’:

sketch_jul09a:324: error: expected ‘;’ before ‘microseconds_to_centimeters’

hWatherCm = H_POZZO ?? microseconds_to_centimeters(duration);

^

sketch_jul09a:24: error: expected ‘)’ before numeric constant

#define H_POZZO 146.0 /* cm */

^

C:\Users\HANSEOKHWAN\Documents\Arduino\sketch_jul09a\sketch_jul09a.ino:326:15: note: in expansion of macro ‘H_POZZO’

if (hWatherCm H_POZZO)

^

exit status 1
stray ‘\342’ in program

please help me i want a resolve this problem

thank you and have a nice day

HI, this is open source, of course you can modify it to insert new features ;-)

i figured out some mistakes on your pgm

Its the final one;

#include

#define PING_PIN 13

#define BUZZER_PIN 8

#define SWITCH_INT 0 /* 0 => pin 2 */

#define PI 3.1415926535898

#define SUPERFICE_BASE (R_POZZO * R_POZZO * PI)

#define SIZE_BAR (16 * 5)

#define ALARM_ICON 0 /* code */

#define SOUND_ICON 6 /* code */

#define SOUND_ICON_ON 7 /* code */

#define R_POZZO 0.5 /* raggio pozzo (m) */

#define H_POZZO 146.0 /* cm */

#define SOGLIA_ALLARME_1 100 /* cm */

#define SOGLIA_ALLARME_2 120 /* cm */

#define DELAY_0 60000 /* ms; 1000 * 60 * 1 = 1 min */

#define DELAY_1 600 /* ms */

#define DELAY_2 200 /* ms */

/* initialize the library with the numbers of the interface pins */

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

int mute = 0;

byte *getChar(int n, byte newChar[]) {

int i;

byte code[5] = {

B10000,

B11000,

B11100,

B11110,

B11111};

for (i = 0; i < 8; i++)

newChar[i] = code[n – 1];

return newChar;

}

void setup() {

int i;

float h;

byte newChar[8];

/* set up the LCD's number of rows and columns: */

lcd.begin(16, 2);

for (i = 1; i < 6; i++)

lcd.createChar(i, getChar(i, newChar));

{

newChar[0] =B00000;

newChar[1] =B00100;

newChar[2] =B01010;

newChar[3] =B01010;

newChar[4] =B11111;

newChar[5] =B00100;

newChar[6] =B00000;

}

lcd.createChar(ALARM_ICON, newChar);

{

newChar[0] =B00011;

newChar[1] =B00101;

newChar[2] =B11001;

newChar[3] =B11001;

newChar[4] =B11001;

newChar[5] =B00101;

newChar[6] =B00011;

}

lcd.createChar(SOUND_ICON, newChar);

{

newChar[0] =B00100;

newChar[1] =B10010;

newChar[2] =B01001;

newChar[3] =B01001;

newChar[4] =B01001;

newChar[5] =B10010;

newChar[6] =B00100;

}

lcd.createChar(SOUND_ICON_ON, newChar);

pinMode(BUZZER_PIN, OUTPUT);

/**

* LOW to trigger the interrupt whenever the pin is low,

* CHANGE to trigger the interrupt whenever the pin changes value

* RISING to trigger when the pin goes from low to high,

* FALLING for when the pin goes from high to low.

*/

attachInterrupt(digitalPinToInterrupt(SWITCH_INT), button, RISING);

/* initialize serial communication */

Serial.begin(9600);

}

void loop() {

long hWatherCm;

int litres;

hWatherCm = read_height();

if (check_alarm(hWatherCm) != 0) /* read again wather height */

hWatherCm = read_height();

lcd.clear();

print_histogram(hWatherCm);

lcd.setCursor(0, 1);

lcd.print(hWatherCm);

lcd.print(" cm – ");

// litres = SUPERFICE_BASE * (hWather / 100.0) * 1000

litres = floor(SUPERFICE_BASE * hWatherCm * 10);

lcd.print(litres);

lcd.print(" l ");

lcd.setCursor(14, 1);

lcd.write(SOUND_ICON);

lcd.setCursor(15, 1);

if (!mute)

lcd.write(SOUND_ICON_ON);

else

lcd.write('X');

/*

Serial.print("cm = ");

Serial.println(hWatherCm);

*/

switch (check_alarm(hWatherCm)) {

case 1:

lcd.setCursor(0, 0);

//lcd.write("A,N");

buzz(200);

delay(DELAY_1);

break;

case 2:

lcd.setCursor(0, 0);

// lcd.write("A,N");

buzz(200);

delay(200);

buzz(200);

delay(DELAY_2);

break;

case 0: // no alarm

delay(DELAY_0);

}

}

void print_histogram(int hWatherCm) {

int i;

int bloks;

float histogram;

// hWatherCm : HPOZZO = histogram : SIZE_BAR

histogram = (SIZE_BAR * hWatherCm) / H_POZZO;

histogram = histogram + 0.5;

bloks = (int)histogram / 5;

for (i = 0; i 0)

lcd.write((int)(histogram) % 5);

}

long read_height() {

/**

* establish variables for duration of the ping,

* and the distance result in centimeters:

*/

long duration, hWatherCm;

/**

* The PING))) is triggered by a HIGH pulse of 2 or more microseconds.

* Give a short LOW pulse beforehand to ensure a clean HIGH pulse:

*/

pinMode(PING_PIN, OUTPUT);

digitalWrite(PING_PIN, LOW);

delayMicroseconds(2);

digitalWrite(PING_PIN, HIGH);

delayMicroseconds(5);

digitalWrite(PING_PIN, LOW);

/**

* The same pin is used to read the signal from the PING))): a HIGH

* pulse whose duration is the time (in microseconds) from the sending

* of the ping to the reception of its echo off of an object.

*/

pinMode(PING_PIN, INPUT);

duration = pulseIn(PING_PIN, HIGH);

/* convert the time into a distance */

hWatherCm = H_POZZO – microseconds_to_centimeters(duration);

if (hWatherCm H_POZZO)

return H_POZZO;

return hWatherCm;

}

void buzz(int msec) {

if (!mute)

digitalWrite(BUZZER_PIN, HIGH);

delay(msec);

digitalWrite(BUZZER_PIN, LOW);

}

int check_alarm(int hWatherCm) {

if (hWatherCm > SOGLIA_ALLARME_1) {

if (hWatherCm < SOGLIA_ALLARME_2)

return 1;

else

return 2;

}

return 0;

}

long microseconds_to_centimeters(long microseconds) {

/**

* The speed of sound is 340.29 m/s or 29.4 microseconds per centimeter.

* The ping travels out and back, so to find the distance of the

* object we take half of the distance travelled.

*/

return microseconds / 29.387 / 2;

}

void button() {

mute = !mute;

lcd.setCursor(15, 1);

if(!mute)

lcd.write(SOUND_ICON_ON);

else

lcd.write('X');

}

its the working program
Regards Hashim,Ashraf -(* – *)-

#include
#define PING_PIN 13

#define BUZZER_PIN 8

#define SWITCH_INT 0 /* 0 => pin 2 */

#define PI 3.1415926535898

#define SUPERFICE_BASE (R_POZZO * R_POZZO * PI)

#define SIZE_BAR (16 * 5)

#define ALARM_ICON 0 /* code */

#define SOUND_ICON 6 /* code */

#define SOUND_ICON_ON 7 /* code */

#define R_POZZO 0.5 /* raggio pozzo (m) */

#define H_POZZO 146.0 /* cm */

#define SOGLIA_ALLARME_1 100 /* cm */

#define SOGLIA_ALLARME_2 120 /* cm */

#define DELAY_0 60000 /* ms; 1000 * 60 * 1 = 1 min */

#define DELAY_1 600 /* ms */

#define DELAY_2 200 /* ms */

/* initialize the library with the numbers of the interface pins */

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

int mute = 0;

byte *getChar(int n, byte newChar[]) {

int i;

byte code[5] = {

B10000,

B11000,

B11100,

B11110,

B11111};

for (i = 0; i < 8; i++)

newChar[i] = code[n – 1];

return newChar;

}

void setup() {

int i;

float h;

byte newChar[8];

/* set up the LCD's number of rows and columns: */

lcd.begin(16, 2);

for (i = 1; i < 6; i++)

lcd.createChar(i, getChar(i, newChar));

{

newChar[0] =B00000;

newChar[1] =B00100;

newChar[2] =B01010;

newChar[3] =B01010;

newChar[4] =B11111;

newChar[5] =B00100;

newChar[6] =B00000;

}

lcd.createChar(ALARM_ICON, newChar);

{

newChar[0] =B00011;

newChar[1] =B00101;

newChar[2] =B11001;

newChar[3] =B11001;

newChar[4] =B11001;

newChar[5] =B00101;

newChar[6] =B00011;

}

lcd.createChar(SOUND_ICON, newChar);

{

newChar[0] =B00100;

newChar[1] =B10010;

newChar[2] =B01001;

newChar[3] =B01001;

newChar[4] =B01001;

newChar[5] =B10010;

newChar[6] =B00100;

}

lcd.createChar(SOUND_ICON_ON, newChar);

pinMode(BUZZER_PIN, OUTPUT);

/**

* LOW to trigger the interrupt whenever the pin is low,

* CHANGE to trigger the interrupt whenever the pin changes value

* RISING to trigger when the pin goes from low to high,

* FALLING for when the pin goes from high to low.

*/

attachInterrupt(digitalPinToInterrupt(SWITCH_INT), button, RISING);

/* initialize serial communication */

Serial.begin(9600);

}

void loop() {

long hWatherCm;

int litres;

hWatherCm = read_height();

if (check_alarm(hWatherCm) != 0) /* read again wather height */

hWatherCm = read_height();

lcd.clear();

print_histogram(hWatherCm);

lcd.setCursor(0, 1);

lcd.print(hWatherCm);

lcd.print(" cm – ");

// litres = SUPERFICE_BASE * (hWather / 100.0) * 1000

litres = floor(SUPERFICE_BASE * hWatherCm * 10);

lcd.print(litres);

lcd.print(" l ");

lcd.setCursor(14, 1);

lcd.write(SOUND_ICON);

lcd.setCursor(15, 1);

if (!mute)

lcd.write(SOUND_ICON_ON);

else

lcd.write('X');

/*

Serial.print("cm = ");

Serial.println(hWatherCm);

*/

switch (check_alarm(hWatherCm)) {

case 1:

lcd.setCursor(0, 0);

//lcd.write("A,N");

buzz(200);

delay(DELAY_1);

break;

case 2:

lcd.setCursor(0, 0);

// lcd.write("A,N");

buzz(200);

delay(200);

buzz(200);

delay(DELAY_2);

break;

case 0: // no alarm

delay(DELAY_0);

}

}

void print_histogram(int hWatherCm) {

int i;

int bloks;

float histogram;

// hWatherCm : HPOZZO = histogram : SIZE_BAR

histogram = (SIZE_BAR * hWatherCm) / H_POZZO;

histogram = histogram + 0.5;

bloks = (int)histogram / 5;

for (i = 0; i 0)

lcd.write((int)(histogram) % 5);

}

long read_height() {

/**

* establish variables for duration of the ping,

* and the distance result in centimeters:

*/

long duration, hWatherCm;

/**

* The PING))) is triggered by a HIGH pulse of 2 or more microseconds.

* Give a short LOW pulse beforehand to ensure a clean HIGH pulse:

*/

pinMode(PING_PIN, OUTPUT);

digitalWrite(PING_PIN, LOW);

delayMicroseconds(2);

digitalWrite(PING_PIN, HIGH);

delayMicroseconds(5);

digitalWrite(PING_PIN, LOW);

/**

* The same pin is used to read the signal from the PING))): a HIGH

* pulse whose duration is the time (in microseconds) from the sending

* of the ping to the reception of its echo off of an object.

*/

pinMode(PING_PIN, INPUT);

duration = pulseIn(PING_PIN, HIGH);

/* convert the time into a distance */

hWatherCm = H_POZZO – microseconds_to_centimeters(duration);

if (hWatherCm H_POZZO)

return H_POZZO;

return hWatherCm;

}

void buzz(int msec) {

if (!mute)

digitalWrite(BUZZER_PIN, HIGH);

delay(msec);

digitalWrite(BUZZER_PIN, LOW);

}

int check_alarm(int hWatherCm) {

if (hWatherCm > SOGLIA_ALLARME_1) {

if (hWatherCm < SOGLIA_ALLARME_2)

return 1;

else

return 2;

}

return 0;

}

long microseconds_to_centimeters(long microseconds) {

/**

* The speed of sound is 340.29 m/s or 29.4 microseconds per centimeter.

* The ping travels out and back, so to find the distance of the

* object we take half of the distance travelled.

*/

return microseconds / 29.387 / 2;

}

void button() {

mute = !mute;

lcd.setCursor(15, 1);

if(!mute)

lcd.write(SOUND_ICON_ON);

else

lcd.write('X');

}

Arduino: 1.7.6 (Windows 10), Board: “Arduino Uno”

LCD_Tank_Level_Meter.ino: In function ‘void setup()’:

LCD_Tank_Level_Meter.ino:58:11: error: assigning to an array from an initializer list

LCD_Tank_Level_Meter.ino:70:11: error: assigning to an array from an initializer list

LCD_Tank_Level_Meter.ino:82:11: error: assigning to an array from an initializer list

LCD_Tank_Level_Meter.ino: In function ‘void loop()’:

LCD_Tank_Level_Meter.ino:146:25: error: call of overloaded ‘write(int)’ is ambiguous

LCD_Tank_Level_Meter.ino:146:25: note: candidates are:

In file included from LCD_Tank_Level_Meter.ino:7:0:

D:ArduinolibrariesLiquidCrystalsrc/LiquidCrystal.h:83:18: note: virtual size_t LiquidCrystal::write(uint8_t)

virtual size_t write(uint8_t);

^

In file included from D:ArduinolibrariesLiquidCrystalsrc/LiquidCrystal.h:5:0,

from LCD_Tank_Level_Meter.ino:7:

D:Arduinohardwarearduinoavrcoresarduino/Print.h:49:12: note: size_t Print::write(const char*)

size_t write(const char *str) {

^

LCD_Tank_Level_Meter.ino:154:25: error: call of overloaded ‘write(int)’ is ambiguous

LCD_Tank_Level_Meter.ino:154:25: note: candidates are:

In file included from LCD_Tank_Level_Meter.ino:7:0:

D:ArduinolibrariesLiquidCrystalsrc/LiquidCrystal.h:83:18: note: virtual size_t LiquidCrystal::write(uint8_t)

virtual size_t write(uint8_t);

^

In file included from D:ArduinolibrariesLiquidCrystalsrc/LiquidCrystal.h:5:0,

from LCD_Tank_Level_Meter.ino:7:

D:Arduinohardwarearduinoavrcoresarduino/Print.h:49:12: note: size_t Print::write(const char*)

size_t write(const char *str) {

^

Error compiling.