//**************************************************************************
//* LCD initialization
//**************************************************************************
//* Calling arguments:
//* char mode1 : display mode (number of lines and character size)
//* char mode2 : display mode (cursor and display state)
//**************************************************************************
void LCD_init(char mode1, char mode2)
{
char aux;
// Configure the pins as outputs
LCD_ENABLE_DIR = 1;
LCD_RS_DIR = 1;
LCD_D4_DIR = 1;
LCD_D5_DIR = 1;
LCD_D6_DIR = 1;
LCD_D7_DIR = 1;
// Set the LCD data pins to zero
LCD_D4 = 0;
LCD_D5 = 0;
LCD_D6 = 0;
LCD_D7 = 0;
LCD_RS = 0;
LCD_ENABLE = 0; // LCD enable = 0
LCD_delay_ms(15);
// LCD 4-bit mode initialization sequence
// send three times 0x03 and then 0x02 to finish configuring the LCD
for(aux=0;aux<3;++aux)
{
LCD_send_nibble(3);
LCD_delay_ms(5);
}
LCD_send_nibble(2);
// Now send the LCD configuration data
LCD_send_byte(0,0x20 | mode1);
LCD_send_byte(0,0x08 | mode2);
lcd_mode = 0x08 | mode2;
LCD_send_byte(0,1);
LCD_send_byte(0,6);
}
void LCD_Set_CustomChar(uint8_t location, uint8_t *ptr)
{
uint8_t i;
if (location<8)
{
LCD_send_byte(0, 0x40+(location*8));
for(i=0;i<8;i++)
LCD_send_byte(1, ptr[ i ]);
}
}
void LCD_write_char(char c) {
switch (c) {
case '\f':
LCD_send_byte(0, 1);
break;
case '\n':
case '\r':
LCD_pos_xy(0, 0);
break;
default:
LCD_send_byte(1, c);
}
}
//**************************************************************************
//* LCD cursor position set
//**************************************************************************
//* Calling arguments:
//* char x : column (starting by 0)
//* char y : line (0 or 1)
//**************************************************************************
void LCD_pos_xy(char x, char y)
{
char address;
if (y) address = LCD_SEC_LINE; else address = 0;
address += x;
LCD_send_byte(0,0x80|address);
}
//**************************************************************************
//* Write a character on the display
//**************************************************************************
//* Calling arguments:
//* char c : character to be written
//**************************************************************************
//* Notes :
//* \f clear the display
//* \n and \r return the cursor to line 1 column 0
//**************************************************************************
void LCD_write_char(char c)
{
switch (c)
{
case '\f' :
LCD_send_byte(0,1);
time_delay_ms(5);
break;
case '\n' :
case '\r' :
LCD_pos_xy(0,1);
break;
case RightShiftCmd :
LCD_send_byte(0,c);
break;
default:
LCD_send_byte(1,c);
}
}
void LCD_init(char mode1, char mode2)
{
char aux;
//SIM_SCGC5 |= SIM_SCGC5_PORTA_MASK | SIM_SCGC5_PORTB_MASK; // enable clock to Port A and Port B
PORTA_PCR8 = PORT_PCR_MUX(1); // PTA8 GPIO
PORTA_PCR9 = PORT_PCR_MUX(1); // PTA9 GPIO
PORTA_PCR11 = PORT_PCR_MUX(1); // PTA11 GPIO
PORTB_PCR4 = PORT_PCR_MUX(1); // PTB4 GPIO
PORTA_PCR12 = PORT_PCR_MUX(1); // PTA12 GPIO
PORTB_PCR12 = PORT_PCR_MUX(1); // PTB12 GPIO
//PORTA_PCR13 = PORT_PCR_MUX(1); // PTA13 GPIO
GPIOA_PDDR |= LCD_ENABLE|LCD_RS|LCD_D4|LCD_D6/*|LCD_D7*/;
GPIOB_PDDR |= LCD_D5|LCD_D7;
// Set the LCD data pins to zero
LCD_ENABLE_OFF;
LCD_RS_OFF;
LCD_D4_OFF;
LCD_D5_OFF;
LCD_D6_OFF;
LCD_D7_OFF;
time_delay_ms(50); //Secuencia de inicializacion
// LCD 4-bit mode initialization sequence
// send three times 0x03 and then 0x02 to finish configuring the LCD
for(aux=0;aux<3;++aux)
{
LCD_send_nibble(3);
time_delay_ms(5);
}
LCD_send_nibble(2);
// Now send the LCD configuration data
LCD_send_byte(0,0x20 | mode1);
LCD_send_byte(0,0x08 | mode2);
lcd_mode = 0x08 | mode2;
LCD_send_byte(0,1);
LCD_send_byte(0,6);
}
//**************************************************************************
//* Turn off the cursor blink function
//**************************************************************************
void LCD_cursor_blink_off(void)
{
lcd_mode &= 0b11111110;
LCD_send_byte (0,lcd_mode);
}
//**************************************************************************
//* Turn on the cursor blink function
//**************************************************************************
void LCD_cursor_blink_on(void)
{
lcd_mode |= 1;
LCD_send_byte (0,lcd_mode);
}
//**************************************************************************
//* Turn the cursor on
//**************************************************************************
void LCD_cursor_on(void)
{
lcd_mode |= 2;
LCD_send_byte (0,lcd_mode);
}
//**************************************************************************
//* Turn the display off
//**************************************************************************
void LCD_display_off(void)
{
lcd_mode &= 0b11111011;
LCD_send_byte (0,lcd_mode);
}
//**************************************************************************
//* Turn the display on
//**************************************************************************
void LCD_display_on(void)
{
lcd_mode |= 4;
LCD_send_byte (0,lcd_mode);
}
void LCD_send_data(uint8_t data){
LCD_send_byte(data, 1);
LCD_wait();
}
void LCD_send_command(uint8_t command){
LCD_send_byte(command, 0);
LCD_wait();
}
void LCD_cursor_off(void) {
lcd_mode &= 0xFD;
LCD_send_byte(0, lcd_mode);
}
void LCD_display_off(void) {
lcd_mode &= 0xFB;
LCD_send_byte(0, lcd_mode);
}
