mrarslanahmed
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hi
i working on pic 16f887 and using mikroc pro for programming, i am trying to interface two lcd with the controller, i have made function of each lcd for initialisation and data, when i use one data sending function at a time, system is ok, but when i use both data function , the system starts giving problem, content for one lcd are send to other lcd as well i have attached code below ,
i will be very pleased if some one can help me in this regard
i working on pic 16f887 and using mikroc pro for programming, i am trying to interface two lcd with the controller, i have made function of each lcd for initialisation and data, when i use one data sending function at a time, system is ok, but when i use both data function , the system starts giving problem, content for one lcd are send to other lcd as well i have attached code below ,
Code:
// LCD module connections
sbit LCD_RS at RB3_bit;
sbit LCD_EN at RB2_bit;
sbit LCD_D4 at RB4_bit;
sbit LCD_D5 at RB5_bit;
sbit LCD_D6 at RB6_bit;
sbit LCD_D7 at RB7_bit;
sbit LCD_RS_Direction at TRISB3_bit;
sbit LCD_EN_Direction at TRISB2_bit;
sbit LCD_D4_Direction at TRISB4_bit;
sbit LCD_D5_Direction at TRISB5_bit;
sbit LCD_D6_Direction at TRISB6_bit;
sbit LCD_D7_Direction at TRISB7_bit;
// End LCD module connections
void init_main();
void Lcd2_init();
void LCD_break(unsigned int);
void lcd2_command(unsigned int);
void lcd2_data_string(char*);
void Break_data_lcd2(char);
void main()
{
init_main();
Lcd_Cmd(_LCD_CLEAR);
LCD_OUT(1,1,"LCD1");
lcd2_data_string("abcd");
}
void init_main()
{
OSCCON=0x71;
Delay_ms(50);
TRISA=0;
TRISB=0;
TRISC=0;
TRISD=0;
TRISE=0;
ANSEL = 0; // Configure AN pins as digital I/O
ANSELH = 0;
C1ON_bit = 0; // Disable comparators
C2ON_bit = 0;
PORTA=0;
PORTB=0;
PORTC=0;
PORTD=0;
PORTE=0;
Lcd2_init();
lcd_init();
Lcd_Cmd(_LCD_CLEAR); // Clear display
Lcd_Cmd(_LCD_CURSOR_OFF); // Cursor off
}
void Lcd2_init()
{
LCD_break(0x02);
LCD_break(0x28);
//LCD_break(0x08); // display off
LCD_break(0x0F); // display on
LCD_break(0x0C);
LCD_break(0x06);
LCD_break(0x80);
}
void LCD_break(unsigned int LCD_break)
{
int temp_lcd_break;
temp_lcd_break=(LCD_break & 0xF0); // Mask lower nibble because RB4-RB7 pins are being used
lcd2_command(temp_lcd_break);
temp_lcd_break=((LCD_break<<4) & 0xF0); // Mask lower nibble because RB4-RB7 pins are being used
lcd2_command(temp_lcd_break);
}
void lcd2_command(unsigned int lcd_cmd)
{
portc=lcd_cmd;
portc.Rc3=0; // RS it is a command
portc.RC2=1; // RS it is a command
Delay_ms(10);
portc.RC2=0;
LCD_CMD=0;
}
void lcd2_data_string(char* lcd2_string)
{
int temp;
for(temp=0;temp<=16;temp++)
{
if(!lcd2_string)
break;
Break_data_lcd2(lcd2_string[temp]);
Delay_ms(25);
}
lcd2_string="";
}
void Break_data_lcd2(char data_lcd2)
{
char temp_data_lcd2;
temp_data_lcd2=(data_lcd2&0xF0);
portc=temp_data_lcd2;
portc.rc3=1; // register select 1 for data
portc.rc2=1; // enable
Delay_ms(10);
portc.rc2=0;
temp_data_lcd2=((data_lcd2<<4)&0xF0);
portc=temp_data_lcd2;
portc.rc3=1; // register select 1 for data
portc.rc2=1; // register select 1 for data
Delay_ms(10);
portc.rc2=0;
temp_data_lcd2="";
}
i will be very pleased if some one can help me in this regard