Conversion byte to string for LCD

[Harris74]

Greetings to all.
I hope to write in the right place .....
I'm doing a project home automation with a PIC18F4520 and LCD.
Unfortunately I have to handle many words and many characters.
To conserve storage space, I thought I'd take advantage of the internal EEPROM.
But how do I convert the value in bytes (EEprom_read) in text ready to be sent to the LCD module? Unfortunately with the conversions present you can only display the value in hex or decimal.
Thank you very much who is willing to devote two minutes to help me.
Greetings.

Christian

[petar.timotijevic]

Hi Christian and welcome to the MikroE forum,

Please see Conversion Library:

Conversions Library
http://www.mikroe.com/download/eng/docu ... &width=970


Best regards,
Peter

[Harris74]

Hi Christian and welcome to the MikroE forum,

Please see Conversion Library:

Conversions Library
http://www.mikroe.com/download/eng/docu ... &width=970


Best regards,
Peter

Hi Peter, thanks for the welcome.
The problem I have is this.
I open eeprom editor and write the text in string format; example my name: Christian.
Now I take the data in bytes in the cells and convert the string to send to an LCD module through the function LCD_Out (1.1, txt)
The problem is that with the conversions present in mikrobasik I can read only the display formats Hex or decimal. C = 0x43 or 67 dec.
I need to see the printed letter "C"
How can I do? is it possible?
thank you very much for the help and availability.

[petar.timotijevic]

Hi,

Also please see Lcd_Chr.

Do you need example?

Simple example in mikroBasic Pro:

Code: Select all

'
'
' ASCII        HEX
' ===========
' C        43
' h        68
' r        72
' i        69
' s        73
' t        74
' i        69
' a        61
' n        6E
'
' Bytes: 0x43,0x68,0x72,0x69,0x73,0x74,0x69,0x61,0x6E
'
'


program Lcd

' Lcd module connections
dim LCD_RS as sbit at LATB4_bit
    LCD_EN as sbit at LATB5_bit
    LCD_D4 as sbit at LATB0_bit
    LCD_D5 as sbit at LATB1_bit
    LCD_D6 as sbit at LATB2_bit
    LCD_D7 as sbit at LATB3_bit

dim LCD_RS_Direction as sbit at TRISB4_bit
    LCD_EN_Direction as sbit at TRISB5_bit
    LCD_D4_Direction as sbit at TRISB0_bit
    LCD_D5_Direction as sbit at TRISB1_bit
    LCD_D6_Direction as sbit at TRISB2_bit
    LCD_D7_Direction as sbit at TRISB3_bit
' End Lcd module connections

dim chval as char

main:
   Lcd_Init()                 ' Initialize Lcd
    Lcd_Cmd(_LCD_CLEAR)       ' Clear display
    Lcd_Cmd(_LCD_CURSOR_OFF)  ' Cursor Off

    ' EEPROM Write
    EEPROM_Write(0x00, 0x43)  ' (Writes 'C' to memory address 0x00
    EEPROM_Write(0x01, 0x68)  ' (Writes 'h' to memory address 0x01
    EEPROM_Write(0x02, 0x72)  ' (Writes 'r' to memory address 0x02
    EEPROM_Write(0x03, 0x69)  ' (Writes 'i' to memory address 0x03
    EEPROM_Write(0x04, 0x73)  ' (Writes 's' to memory address 0x04
    EEPROM_Write(0x05, 0x74)  ' (Writes 't' to memory address 0x05
    EEPROM_Write(0x06, 0x69)  ' (Writes 'i' to memory address 0x06
    EEPROM_Write(0x07, 0x61)  ' (Writes 'a' to memory address 0x07
    EEPROM_Write(0x08, 0x6E)  ' (Writes 'n' to memory address 0x08

    Delay_ms(20)              ' Minimum 20ms must be between write and read process

    ' EEPROM Read
    chval = EEProm_Read(0x00)      ' Read EEPROM address of 0x00
    Lcd_chr(2,1,chval)
    chval = EEProm_Read(0x01)      ' Read EEPROM address of 0x01
    Lcd_chr(2,2,chval)
    chval = EEProm_Read(0x02)      ' Read EEPROM address of 0x02
    Lcd_chr(2,3,chval)
    chval = EEProm_Read(0x03)      ' Read EEPROM address of 0x03
    Lcd_chr(2,4,chval)
    chval = EEProm_Read(0x04)      ' Read EEPROM address of 0x04
    Lcd_chr(2,5,chval)
    chval = EEProm_Read(0x05)      ' Read EEPROM address of 0x05
    Lcd_chr(2,6,chval)
    chval = EEProm_Read(0x06)      ' Read EEPROM address of 0x06
    Lcd_chr(2,7,chval)
    chval = EEProm_Read(0x07)      ' Read EEPROM address of 0x07
    Lcd_chr(2,8,chval)
    chval = EEProm_Read(0x08)      ' Read EEPROM address of 0x08
    Lcd_chr(2,9,chval)
end.

Simple example in MikroC Pro:

Code: Select all

/*

ASCII	HEX
===========
C	43
h	68
r	72
i	69
s	73
t	74
i	69
a	61
n	6E

Bytes: 0x43,0x68,0x72,0x69,0x73,0x74,0x69,0x61,0x6E

*/


char chval;

// Lcd module connections
sbit LCD_RS at LATB4_bit;
sbit LCD_EN at LATB5_bit;
sbit LCD_D4 at LATB0_bit;
sbit LCD_D5 at LATB1_bit;
sbit LCD_D6 at LATB2_bit;
sbit LCD_D7 at LATB3_bit;

sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;
// End Lcd module connections


void main()
{
    Lcd_Init();                // Initialize Lcd
    Lcd_Cmd(_LCD_CLEAR);       // Clear display
    Lcd_Cmd(_LCD_CURSOR_OFF);  // Cursor Off

    // EEPROM Write
    EEPROM_Write(0x00, 0x43);  // (Writes 'C' to memory address 0x00
    EEPROM_Write(0x01, 0x68);  // (Writes 'h' to memory address 0x01
    EEPROM_Write(0x02, 0x72);  // (Writes 'r' to memory address 0x02
    EEPROM_Write(0x03, 0x69);  // (Writes 'i' to memory address 0x03
    EEPROM_Write(0x04, 0x73);  // (Writes 's' to memory address 0x04
    EEPROM_Write(0x05, 0x74);  // (Writes 't' to memory address 0x05
    EEPROM_Write(0x06, 0x69);  // (Writes 'i' to memory address 0x06
    EEPROM_Write(0x07, 0x61);  // (Writes 'a' to memory address 0x07
    EEPROM_Write(0x08, 0x6E);  // (Writes 'n' to memory address 0x08

    Delay_ms(20);              // Minimum 20ms must be between write and read process

    // EEPROM Read
    chval = EEProm_Read(0x00);      // Read EEPROM address of 0x00
    Lcd_chr(2,1,chval);
    chval = EEProm_Read(0x01);      // Read EEPROM address of 0x01
    Lcd_chr(2,2,chval);
    chval = EEProm_Read(0x02);      // Read EEPROM address of 0x02
    Lcd_chr(2,3,chval);
    chval = EEProm_Read(0x03);      // Read EEPROM address of 0x03
    Lcd_chr(2,4,chval);
    chval = EEProm_Read(0x04);      // Read EEPROM address of 0x04
    Lcd_chr(2,5,chval);
    chval = EEProm_Read(0x05);      // Read EEPROM address of 0x05
    Lcd_chr(2,6,chval);
    chval = EEProm_Read(0x06);      // Read EEPROM address of 0x06
    Lcd_chr(2,7,chval);
    chval = EEProm_Read(0x07);      // Read EEPROM address of 0x07
    Lcd_chr(2,8,chval);
    chval = EEProm_Read(0x08);      // Read EEPROM address of 0x08
    Lcd_chr(2,9,chval);
}

Code can be further optimized.


Best regards,
Peter

[Harris74]

Hi Peter,
It 'really very simple and do not know what I was wrong.
Thank you very much for your availability and for the help.
greetings.

[petar.timotijevic]

Hi,

Hi Peter,
It 'really very simple and do not know what I was wrong.
Thank you very much for your availability and for the help.
greetings.

I'm glad to see that the problem is solved.


Best regards,
Peter