dip204.c File Reference

#include <stdarg.h>
#include <stdio.h>
#include "board.h"
#include "conf_dip204.h"
#include "dip204.h"
#include "gpio.h"
#include "compiler.h"
#include "spi.h"
#include "pwm.h"
#include "delay.h"

Macros
#define	DIP204_CGRAM_BASE_ADDR   0x40
#define	DIP204_PERIOD_MAX   50
#define	DIP204_READ_COMMAND   0xFC
#define	DIP204_READ_DATA   0xFE
#define	DIP204_WRITE_COMMAND   0xF8
#define	DIP204_WRITE_DATA   0xFA

Functions
void	dip204_clear_display (void)
void	dip204_create_char (char ascii_code, const unsigned char data[8])
void	dip204_hide_cursor (void)
void	dip204_init (backlight_options option, bool backlight_on)
void	dip204_printf_string (const char *format,...)
static void	dip204_read_byte (unsigned char *byte)
	hardware abstraction layer to read a byte from LCD depends if LCD is plugged on SPI or on EBI More...
void	dip204_read_data (unsigned char *data)
static void	dip204_select (void)
	function to select the LCD More...
void	dip204_set_backlight (backlight_power power)
void	dip204_set_cursor_position (unsigned char column, unsigned char line)
void	dip204_show_cursor (void)
static void	dip204_unselect (void)
	function to unselect the LCD More...
static void	dip204_wait_busy (void)
	function to wait for LCD becomes not busy More...
static void	dip204_write_byte (unsigned char byte)
	hardware abstraction layer to send a byte to LCD depends if LCD is plugged on SPI or on EBI More...
void	dip204_write_data (unsigned char data)
void	dip204_write_string (const char *string)

Variables
static int	channel_id = -1
static avr32_pwm_channel_t	pwm_channel
static unsigned short	pwm_duty

#define DIP204_CGRAM_BASE_ADDR   0x40

Referenced by dip204_create_char().

#define DIP204_PERIOD_MAX   50

Referenced by dip204_init(), and dip204_set_backlight().

#define DIP204_READ_COMMAND   0xFC

Read Command start byte, for Busy-flag checking

Referenced by dip204_create_char(), dip204_wait_busy(), and dip204_write_byte().

#define DIP204_READ_DATA   0xFE

Read Data from DDRAM

Referenced by dip204_read_data(), and dip204_write_byte().

#define DIP204_WRITE_COMMAND   0xF8

Write Command start byte

Referenced by dip204_clear_display(), dip204_create_char(), dip204_hide_cursor(), dip204_init(), dip204_set_cursor_position(), dip204_show_cursor(), and dip204_write_byte().

#define DIP204_WRITE_DATA   0xFA

Write Data start byte

Referenced by dip204_create_char(), dip204_printf_string(), dip204_write_byte(), dip204_write_data(), and dip204_write_string().

static void dip204_read_byte ( unsigned char *  byte )

static

hardware abstraction layer to read a byte from LCD depends if LCD is plugged on SPI or on EBI

Parameters

byte	Input. byte read from the LCD (D7 .. D0)

References Assert, bit_reverse8, DIP204_SPI, SPI_OK, spi_read(), and spi_write().

Referenced by dip204_create_char(), dip204_read_data(), and dip204_wait_busy().

static void dip204_select ( void  )

static

function to select the LCD

References DIP204_SPI, DIP204_SPI_NPCS, and spi_selectChip().

Referenced by dip204_clear_display(), dip204_create_char(), dip204_hide_cursor(), dip204_init(), dip204_printf_string(), dip204_read_data(), dip204_set_cursor_position(), dip204_show_cursor(), dip204_write_data(), and dip204_write_string().

static void dip204_unselect ( void  )

static

function to unselect the LCD

References Assert, DIP204_SPI, DIP204_SPI_NPCS, SPI_OK, and spi_unselectChip().

Referenced by dip204_clear_display(), dip204_create_char(), dip204_hide_cursor(), dip204_init(), dip204_printf_string(), dip204_read_data(), dip204_set_cursor_position(), dip204_show_cursor(), dip204_write_data(), and dip204_write_string().

static void dip204_wait_busy ( void  )

static

function to wait for LCD becomes not busy

References dip204_read_byte(), DIP204_READ_COMMAND, and dip204_write_byte().

Referenced by dip204_clear_display(), dip204_create_char(), dip204_hide_cursor(), dip204_init(), dip204_printf_string(), dip204_read_data(), dip204_set_cursor_position(), dip204_show_cursor(), dip204_write_data(), and dip204_write_string().

static void dip204_write_byte ( unsigned char  byte )

static

hardware abstraction layer to send a byte to LCD depends if LCD is plugged on SPI or on EBI

Parameters

byte	Input. byte to write to the LCD (D7 .. D0)

References Assert, bit_reverse8, DIP204_READ_COMMAND, DIP204_READ_DATA, DIP204_SPI, DIP204_WRITE_COMMAND, DIP204_WRITE_DATA, SPI_OK, and spi_write().

Referenced by dip204_clear_display(), dip204_create_char(), dip204_hide_cursor(), dip204_init(), dip204_printf_string(), dip204_read_data(), dip204_set_cursor_position(), dip204_show_cursor(), dip204_wait_busy(), dip204_write_data(), and dip204_write_string().

int channel_id = -1

static

The channel number

Referenced by dip204_init(), dip204_set_backlight(), pwm_async_update_channel(), pwm_channel_init(), and pwm_sync_update_channel().

avr32_pwm_channel_t pwm_channel

static

the PWM channel config

Referenced by dip204_init(), and dip204_set_backlight().

unsigned short pwm_duty

static

the duty cycle that will be updated to change backlight power

Referenced by dip204_init(), and dip204_set_backlight().