/* -----------------------------------------------------------------------------------------------------------*/
void HD44780_TWI_enable( void )
{
if ( TWI_SendAddress( HD44780_TWI_ADDR , TWI_WRITE ) == TRUE )
{
HD44780_TWI_Byte &= ~( 1 << HD44780_TWI_E_PIN );
TWI_Write( HD44780_TWI_Byte );
_delay_us( 100 );
HD44780_TWI_Byte |= ( 1 << HD44780_TWI_E_PIN );
TWI_Write( HD44780_TWI_Byte );
_delay_us( 90 );
HD44780_TWI_Byte &= ~( 1 << HD44780_TWI_E_PIN );
TWI_Write( HD44780_TWI_Byte );
TWI_SendStop();
_delay_us( 90 );
}
}
int TWI_Scan( void )
{
unsigned char i;
int Devices=0;
for ( i = 0; i < 128 ; i++ )
{
if ( TWI_SendAddress( i , TWI_WRITE ) == TRUE )
{
TWI_SendStop();
Devices++;
}
}
return( Devices );
}
/* -----------------------------------------------------------------------------------------------------------*/
void HD44780_TWI_Backlight( unsigned char value )
{
if ( TWI_SendAddress( HD44780_TWI_ADDR , TWI_WRITE ) == TRUE )
{
if ( value != 0 )
{
HD44780_TWI_Byte |= ( 1 << HD44780_TWI_BL_PIN ); // Backlight off
}
else
{
HD44780_TWI_Byte &= ~( 1 << HD44780_TWI_BL_PIN ); // Backlight off
}
TWI_Write( HD44780_TWI_Byte );
TWI_SendStop();
}
}
/* -----------------------------------------------------------------------------------------------------------*/
void KS0073_TWI_enable( void )
{
if ( TWI_SendAddress( KS0073_TWI_ADDR , TWI_WRITE ) == TRUE )
{
KS0073_TWI_Byte &= ~( 1 << KS0073_TWI_E_PIN );
TWI_Write( KS0073_TWI_Byte );
_delay_us( 100 );
KS0073_TWI_Byte |= ( 1 << KS0073_TWI_E_PIN );
TWI_Write( KS0073_TWI_Byte );
_delay_us( 90 );
KS0073_TWI_Byte &= ~( 1 << KS0073_TWI_E_PIN );
TWI_Write( KS0073_TWI_Byte );
TWI_SendStop();
_delay_us( 90 );
}
}
/* -----------------------------------------------------------------------------------------------------------*/
void KS0073_TWI_Backlight( unsigned char value )
{
if ( TWI_SendAddress( KS0073_TWI_ADDR , TWI_WRITE ) == TRUE )
{
if ( LCD_CMD != LCD_BL_OFF )
{
KS0073_TWI_Byte |= ( 1 << KS0073_TWI_BL_PIN ); // Backlight off
}
else
{
KS0073_TWI_Byte &= ~( 1 << KS0073_TWI_BL_PIN ); // Backlight off
}
TWI_Write( KS0073_TWI_Byte );
TWI_SendStop();
}
}
/* -----------------------------------------------------------------------------------------------------------*/
void HD44780_TWI_init( void )
{
unsigned char i;
int y;
HD44780_TWI_Byte = 0;
// erster Reset in den 8-Bit Modus
HD44780_TWI_out(HD44780_CMD_SOFT_RESET);
CLOCK_delay( HD44780_DELAY_SOFT_RESET1 );
// zweiter Reset in den 8-Bit Modus
HD44780_TWI_enable();
CLOCK_delay( HD44780_DELAY_SOFT_RESET2 );
// dritter Reset in den 8-Bit Modus
HD44780_TWI_enable();
CLOCK_delay( HD44780_DELAY_SOFT_RESET3 );
// und jetzt endlich in den 4-Bit Modus
HD44780_TWI_out( HD44780_CMD_SET_FUNCTION |
HD44780_SF_4BIT );
CLOCK_delay( HD44780_DELAY_SET_4BITMODE );
// Display einstellen, 4Bit, 2 Lines und Zeichensatz 5x8 Pixel
HD44780_TWI_sendCMD( HD44780_CMD_SET_FUNCTION |
HD44780_SF_4BIT | // 4 Bit mode
HD44780_SF_2LINES | // 2 lines
HD44780_SF_5x10 ); // 5x10
// clear screen
HD44780_TWI_sendCMD( HD44780_CMD_CLEAR );
// Cursor auf Homeposition setzen
HD44780_TWI_sendCMD( HD44780_CMD_CURSOR_HOME );
// Display einschalten
HD44780_TWI_sendCMD( HD44780_CMD_SET_DISPLAY |
HD44780_SD_DISPLAY_ON /* | // display on
HD44780_SD_CURSOR_ON | // show cursor
HD44780_SD_BLINKING_ON */ ); // cursor blinking
HD44780_TWI_row = 0;
HD44780_TWI_column = 0;
// fade in LCD-Backlight
if ( TWI_SendAddress( HD44780_TWI_ADDR , TWI_WRITE ) == TRUE )
{
for( y = 0 ; y < 128 ; y++ )// Backlight auf 100% dimmen
{
for ( i = 0 ; i < 128 ; i++ )
{
if( i <= y)
HD44780_TWI_Byte &= ~( 1 << HD44780_TWI_BL_PIN );
else
HD44780_TWI_Byte |= ( 1 << HD44780_TWI_BL_PIN );
TWI_Write( HD44780_TWI_Byte );
}
}
TWI_SendStop();
}
HD44780_TWI_Byte &= ~( 1 << HD44780_TWI_BL_PIN );
}
/* -----------------------------------------------------------------------------------------------------------*/
void KS0073_TWI_init( void )
{
unsigned char i;
int y;
KS0073_TWI_Byte = 0;
// erster Reset in den 8-Bit Modus
KS0073_TWI_out(HD44780_CMD_SOFT_RESET);
CLOCK_delay( HD44780_DELAY_SOFT_RESET1 );
// zweiter Reset in den 8-Bit Modus
KS0073_TWI_enable();
CLOCK_delay( HD44780_DELAY_SOFT_RESET2 );
// dritter Reset in den 8-Bit Modus
KS0073_TWI_enable();
CLOCK_delay( HD44780_DELAY_SOFT_RESET3 );
// und jetzt endlich in den 4-Bit Modus und 'RE-Bit ein b00101100
KS0073_TWI_out(HD44780_CMD_SET_FUNCTION |
HD44780_SF_4BIT); // RE:1
CLOCK_delay( HD44780_DELAY_SET_4BITMODE );
KS0073_TWI_sendCMD(HD44780_CMD_SET_FUNCTION |
HD44780_SF_4BIT |
HD44780_SF_2LINES |
KS0073_RE_ON);
// Display für KS0073 einstellen b00001001
KS0073_TWI_sendCMD(KS0073_CMD_EXT_FUNCTION |
HD44780_SF_5x7 | // 5-dot-Font
KS0073_4LINES); // 4-line display
// RE:Bit wieder auf 0 setzen b00101000
KS0073_TWI_sendCMD(HD44780_CMD_SET_FUNCTION |
HD44780_SF_4BIT |
HD44780_SF_2LINES|
KS0073_RE_OFF);
// clear screen
KS0073_TWI_sendCMD( HD44780_CMD_CLEAR );
//Display ausschalten
KS0073_TWI_sendCMD(HD44780_CMD_SET_DISPLAY |
HD44780_SD_DISPLAY_OFF);
// Entry Mode
KS0073_TWI_sendCMD(HD44780_CMD_SET_ENTRY |
HD44780_SE_INCREASE);
// Display clear cursor home
KS0073_TWI_sendCMD( HD44780_CMD_CLEAR );
// Cursor auf Homeposition setzen
KS0073_TWI_sendCMD( HD44780_CMD_CURSOR_HOME );
// Display einschalten
KS0073_TWI_sendCMD( HD44780_CMD_SET_DISPLAY |
HD44780_SD_DISPLAY_ON /* | // display on
HD44780_SD_CURSOR_ON | // show cursor
HD44780_SD_BLINKING_ON */ ); // cursor blinking
KS0073_TWI_row = 0;
KS0073_TWI_column = 0;
// fade in LCD-Backlight
if ( TWI_SendAddress( KS0073_TWI_ADDR , TWI_WRITE ) == TRUE )
{
for( y = 0 ; y < 128 ; y++ )// Backlight auf 100% dimmen
{
for ( i = 0 ; i < 128 ; i++ )
{
if( i <= y)
KS0073_TWI_Byte &= ~( 1 << KS0073_TWI_BL_PIN );
else
KS0073_TWI_Byte |= ( 1 << KS0073_TWI_BL_PIN );
TWI_Write( KS0073_TWI_Byte );
}
}
TWI_SendStop();
}
KS0073_TWI_Byte &= ~( 1 << KS0073_TWI_BL_PIN );
}