problem debugging this error error: incompatible types in assignment of 'uint8_t

Using Arduino Programming Questions
#1

hi can you please help me with this i try many things can any one please tell what do

#include <EEPROM.h>
#include <Keypad.h>
char targetamount[4]={0,0,0,0};
char customKey=0;
const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte rowPins[ROWS] = {3,4,5,6}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {7,8,9,10}; //connect to the column pinouts of the keypad

//initialize an instance of class NewKeypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); 

void setup()
{
  Serial.begin(9600);void loop()
{
  
  
      targetamount=EEPROM.read(int(targetamount));
//    targetamount[c]=EEPROM.read(c);
        Serial.println(targetamount);char customKey = customKeypad.getKey();

  if ( customKey == '*')
  {
    target();
  }
//  delay(1);
}

void target()
{
  int r = 0;
  int c = 4;
  Serial.println("Enter the amount you want to saved");
  while (r<4)
  {
   char key=char(customKeypad.getKey());
    if (key)
    {
     targetamount[r] = key;
     Serial.print(key);
     EEPROM.write(c,key);
     r++;
     c++;
    } 
  }
  
  Serial.print("taget amount saved");
  customKey = 0;
}
#2 
void setup()
{
  Serial.begin(9600);void loop()
{

Look at that carefully. If you can't see a problem with it, have a look at the Blink example and see how its setup and loop functions are defined.

Pete

#3

i try this code but it still have that error

#include <EEPROM.h>
#include <Keypad.h>
char targetamount[4]={0,0,0,0};
char customKey=0;


const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte rowPins[ROWS] = {3,4,5,6}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {7,8,9,10}; //connect to the column pinouts of the keypad

//initialize an instance of class NewKeypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); 

void setup()
{
  Serial.begin(9600);
}
void loop()
{
  
  
//     targetamount=EEPROM.read(int(targetamount));
    targetamount=EEPROM.read(targetamount);
        Serial.println(targetamount);
 char customKey = customKeypad.getKey();

  if ( customKey == '*')
  {
    target();
  }

}

void target()
{
  int r = 0;
  int c = 4;
  Serial.println("Enter the amount you want to saved");
  while (r<4)
  {
   char key=char(customKeypad.getKey());
    if (key)
    {
     targetamount[r] = key;
     Serial.print(key);
     EEPROM.write(c,key);
     r++;
     c++;
    } 
  }
  
  Serial.print("taget amount saved");
  customKey = 0;
}

please help with this

#4

Which line does it say the error is on?

#5

You are not passing the correct parameters to the EEPROM read and write. Read takes an address as its argument.

    for(int i = 0; i < 4; i++)
    {
      targetamount[i] = EEPROM.read(i);
    }

Write take an address and the value to write.

  while (r<4)
  {
   char key=char(customKeypad.getKey());
    if (key)
    {
     targetamount[r] = key;
     Serial.print(key);
     EEPROM.write(r,targetamount[r]);
     r++;
     c++;
    }
  }
#6

it works thanks a lot for all your help i really appreciate it god bless you this is now my code

#include <EEPROM.h>
#include <Keypad.h>
char targetamount[4]={0,0,0,0};
char customKey=0;


const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte rowPins[ROWS] = {3,4,5,6}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {7,8,9,10}; //connect to the column pinouts of the keypad

//initialize an instance of class NewKeypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); 

void setup()
{
  Serial.begin(9600);
}
void loop()
{
 char customKey = customKeypad.getKey();

if (customKey == '#')
{
      for(int i = 0; i < 4; i++)
    {
     Serial.println(targetamount[i] = EEPROM.read(i));
    }
}
  if ( customKey == '*')
  {
    target();
  }
//  delay(1);
}

void target()
{
  int r = 0;
  int c = 4;
  Serial.println("Enter the amount you want to saved");
   while (r<4)
  {
   char key=char(customKeypad.getKey());
    if (key)
    {
     targetamount[r] = key;
     Serial.print(key);
     EEPROM.write(r,targetamount[r]);
     r++;
     c++;
    }
  }
  Serial.print("taget amount saved");
  customKey = 0;
}
#7