void Init_LCD(void)
{
char k;
ddr_lcd = 0xFF;
for (k=0;k<3;k++)
{
_delay_ms(15);
CLEAR_LCD_E;port_lcd&= ~0xF0; // Load data to port
port_lcd|=0x30; SET_LCD_WRITE ; // Set LCD to write
SET_LCD_CMD; // Set LCD to command
_delay_us(5);
SET_LCD_E; // Write data to LCD
_delay_us(3);
CLEAR_LCD_E;
_delay_us(5); // Disable LCD
port_lcd&= ~0xF0;
}
//delay_ms(5);
LCD_Write4Control (0x20);
_delay_ms(1);
LCD_WriteControl (0x2F); //Разрядность шины 4, кол-во строк 2, шрифт 5x10.
LCD_Clear();//Очистить дисплей, установить курсор в начальную позицию.
LCD_WriteControl (0x06);//Сдвиг курсора вправо.
LCD_WriteControl (0x0E);//Включить дисплей, зажечь курсор.
}
// *************************************************** //
// *** Position the LCD cursor at "row", "column". *** //
// *************************************************** //
void LCD_Cursor (char row, char column)
{
switch (row) {
case 1: LCD_WriteControl (0x80 + column - 1); break;
case 2: LCD_WriteControl (0xc0 + column - 1); break;
case 3: LCD_WriteControl (0x94 + column - 1); break;
case 4: LCD_WriteControl (0xd4 + column - 1); break;
default: break;
}
}
/**
******************************************************************************
**
** Function Name : LCD_Cursor
**
** Description : Position the LCD cursor at "row", "column".
**
** Passed Parameters : None
**
** Modified Data : None
**
** Return Value : None
**
******************************************************************************
*/
void LCD_Cursor( uint8 row, uint8 column )
{
switch( row ) {
case 1: LCD_WriteControl( 1, 0x80 + column - 1 ); break;
case 2: LCD_WriteControl( 1, 0xc0 + column - 1 ); break;
case 3: LCD_WriteControl( 2, 0x80 + column - 1 ); break;
case 4: LCD_WriteControl( 2, 0xc0 + column - 1 ); break;
default: break;
}
}
/**
******************************************************************************
**
** Function Name : LCD_DefineCharacter
**
** Description : Define dot pattern for user-defined character.
**
** Passed Parameters : address = address of character( 0x00-0x07 )
** pattern = pointer to 8-byte array containing
** the dot pattern
** Modified Data : None
**
** Return Value : None
**
******************************************************************************
*/
void LCD_DefineChar( uint8 address, const uint8 *pattern )
{
uint8 i;
LCD_WriteControl( 1, 0x40 +( address << 3 ) );
LCD_WriteControl( 2, 0x40 +( address << 3 ) );
for( i=0; i<8; i++ ) {
LCD_WriteData( 1, *pattern++ );
LCD_WriteData( 2, *pattern++ );
}
}
/**
******************************************************************************
**
** Function Name : LCD_InitDriver
**
** Description : Initialize the LCD driver.
**
** Passed Parameters : None
**
** Modified Data : None
**
** Return Value : None
**
******************************************************************************
*/
static void LCD_InitDriver( void )
{
LCD_WriteControl( 1, 0x38 ); Delay(10);
LCD_WriteControl( 1, 0x38 ); Delay(10);
LCD_WriteControl( 1, 0x38 ); Delay(10);
LCD_WriteControl( 1, 0x06 ); Delay(10);
LCD_WriteControl( 1, 0x0c ); Delay(10);
LCD_WriteControl( 2, 0x38 ); Delay(10);
LCD_WriteControl( 2, 0x38 ); Delay(10);
LCD_WriteControl( 2, 0x38 ); Delay(10);
LCD_WriteControl( 2, 0x06 ); Delay(10);
LCD_WriteControl( 2, 0x0c ); Delay(10);
}
/*******************************************************************************
* Function Name: LCD_Init
********************************************************************************
*
* Summary:
* Perform initialization required for components normal work.
* This function initializes the LCD hardware module as follows:
* Enable 4-bit interface
* Clear the display
* Enable auto cursor increment
* Resets the cursor to start position
* Also loads custom character set to LCD if it was defined in the customizer.
*
* Parameters:
* None.
*
* Return:
* None.
*
* Reentrant:
* No.
*
*******************************************************************************/
void LCD_Init(void)
{
/* INIT CODE */
CyDelay(40u); /* Delay 40 ms */
LCD_WrCntrlNib(LCD_DISPLAY_8_BIT_INIT); /* Selects 8-bit mode */
CyDelay(5u); /* Delay 5 ms */
LCD_WrCntrlNib(LCD_DISPLAY_8_BIT_INIT); /* Selects 8-bit mode */
CyDelay(15u); /* Delay 15 ms */
LCD_WrCntrlNib(LCD_DISPLAY_8_BIT_INIT); /* Selects 8-bit mode */
CyDelay(1u); /* Delay 1 ms */
LCD_WrCntrlNib(LCD_DISPLAY_4_BIT_INIT); /* Selects 4-bit mode */
CyDelay(5u); /* Delay 5 ms */
LCD_WriteControl(LCD_CURSOR_AUTO_INCR_ON); /* Incr Cursor After Writes */
LCD_WriteControl(LCD_DISPLAY_CURSOR_ON); /* Turn Display, Cursor ON */
LCD_WriteControl(LCD_DISPLAY_2_LINES_5x10); /* 2 Lines by 5x10 Characters */
LCD_WriteControl(LCD_DISPLAY_CURSOR_OFF); /* Turn Display, Cursor OFF */
LCD_WriteControl(LCD_CLEAR_DISPLAY); /* Clear LCD Screen */
LCD_WriteControl(LCD_DISPLAY_ON_CURSOR_OFF); /* Turn Display ON, Cursor OFF */
LCD_WriteControl(LCD_RESET_CURSOR_POSITION); /* Set Cursor to 0,0 */
CyDelay(5u);
#if(LCD_CUSTOM_CHAR_SET != LCD_NONE)
LCD_LoadCustomFonts(LCD_customFonts);
#endif /* LCD_CUSTOM_CHAR_SET != LCD_NONE */
}
/*******************************************************************************
* Function Name: LCD_LoadCustomFonts
********************************************************************************
*
* Summary:
* Loads 8 custom font characters into the LCD Module for use. Cannot use
* characters from two different font sets at once, but font sets can be
* switched out during runtime.
*
* Parameters:
* customData: pointer to a constant array of 64 bytes representing 8 custom
* font characters.
* Return:
* None.
*
* Theory:
* Prior to using this function user need to import the pointer to custom
* font array to your project by writting the following in the source code file
* where custom font will be used:
* extern uint8 const CYCODE LCD_Char_customFonts[];
* This function is not automatically called by the Start() routine and must be
* called manually by the user.
*
*******************************************************************************/
void LCD_LoadCustomFonts(uint8 const customData[])
{
uint8 indexU8;
LCD_IsReady();
/* Set starting address in the LCD Module.
* Optionally: Read the current address to restore at a later time.
*/
LCD_WriteControl(LCD_CGRAM_0);
/* Load in the 64 bytes of CustomChar Data */
for(indexU8 = 0u; indexU8 < LCD_CUSTOM_CHAR_SET_LEN; indexU8++)
{
LCD_WriteData(customData[indexU8]);
}
LCD_IsReady();
LCD_WriteControl(LCD_DDRAM_0);
}
/*******************************************************************************
* Function Name: LCD_Position
********************************************************************************
*
* Summary:
* Moves active cursor location to a point specified by the input arguments
*
* Parameters:
* row: Specific row of LCD module to be written
* column: Column of LCD module to be written
*
* Return:
* None.
*
* Note:
* This only applies for LCD displays which use the 2X40 address mode.
* This results in Row 2 offset from row one by 0x28.
* When there are more than 2 rows, each row must be fewer than 20 characters.
*
*******************************************************************************/
void LCD_Position(uint8 row, uint8 column)
{
switch (row)
{
case (uint8)0:
LCD_WriteControl(LCD_ROW_0_START + column);
break;
case (uint8) 1:
LCD_WriteControl(LCD_ROW_1_START + column);
break;
case (uint8) 2:
LCD_WriteControl(LCD_ROW_2_START + column);
break;
case (uint8) 3:
LCD_WriteControl(LCD_ROW_3_START + column);
break;
default:
/* if default case is hit, invalid row argument was passed.*/
break;
}
}
/**
******************************************************************************
**
** Function Name : LCD_CursorLeft
**
** Description : Move the cursor left by one character.
**
** Passed Parameters : None
**
** Modified Data : None
**
** Return Value : None
**
******************************************************************************
*/
void LCD_CursorLeft( void )
{
LCD_WriteControl( 1, 0x10 );
}
// ************************** //
// *** Turn the cursor on *** //
// ************************** //
void LCD_Cursor_On (void)
{
LCD_WriteControl (LCD_CURS_ON);
}
/**
******************************************************************************
**
** Function Name : LCD_DisplayOn
**
** Description : Turn On LCD.
**
** Passed Parameters : None
**
** Modified Data : None
**
** Return Value : None
**
******************************************************************************
*/
void LCD_DisplayOn( void )
{
LCD_WriteControl( 1, 0x0c );
LCD_WriteControl( 2, 0x0c );
}
// *************************** //
// *** Turn the cursor off *** //
// *************************** //
void LCD_Cursor_Off (void)
{
LCD_WriteControl (LCD_ON);
}
/**
******************************************************************************
**
** Function Name : LCD_CursorOff
**
** Description : Turns the cursor off.
**
** Passed Parameters : None
**
** Modified Data : None
**
** Return Value : None
**
******************************************************************************
*/
void LCD_CursorOff( void )
{
LCD_WriteControl( 1, 0x0c );
}
/**
******************************************************************************
**
** Function Name : LCD_DisplayOff
**
** Description : Turn Off LCD.
**
** Passed Parameters : None
**
** Modified Data : None
**
** Return Value : None
**
******************************************************************************
*/
void LCD_DisplayOff( void )
{
LCD_WriteControl( 1, 0x08 );
LCD_WriteControl( 2, 0x08 );
}
/**
******************************************************************************
**
** Function Name : LCD_CursorRight
**
** Description : Move the cursor right by one character.
**
** Passed Parameters : None
**
** Modified Data : None
**
** Return Value : None
**
******************************************************************************
*/
void LCD_CursorRight( void )
{
LCD_WriteControl( 1, 0x14 );
}
/**
******************************************************************************
**
** Function Name : LCD_CursorOn
**
** Description : Turns the cursor on.
**
** Passed Parameters : None
**
** Modified Data : None
**
** Return Value : None
**
******************************************************************************
*/
void LCD_CursorOn( void )
{
LCD_WriteControl( 1, 0x0d );
}
// ************************************************ //
// *** Clear the LCD screen (also homes cursor) *** //
// ************************************************ //
void LCD_Clear(void)
{
LCD_WriteControl(0x01);
}
void LCD_Display_Off (void)
{
LCD_WriteControl(LCD_OFF);
}
/**
******************************************************************************
**
** Function Name : LCD_Home
**
** Description : Position the LCD cursor at row 1, col 1.
**
** Passed Parameters : None
**
** Modified Data : None
**
** Return Value : None
**
******************************************************************************
*/
void LCD_Home( void )
{
LCD_WriteControl( 1, 0x02 );
}
/**
******************************************************************************
**
** Function Name : LCD_Clear
**
** Description : Clear the LCD screen(also homes cursor).
**
** Passed Parameters : None
**
** Modified Data : None
**
** Return Value : None
**
******************************************************************************
*/
void LCD_Clear(void)
{
LCD_WriteControl( 1, 0x01 );
LCD_WriteControl( 2, 0x01 );
}
void LCD_Display_On (void)
{
LCD_WriteControl(LCD_ON);
}
