lcd_32122a.c File Reference

Displaytech 32122A LCD driver. More...

#include "lcd_32122a.h"
#include <gfx/gfx.h>
#include "hw/hw_lcd_32122a.h"
#include "cfg/cfg_lcd_32122a.h"
#include <cfg/macros.h>
#include <cfg/debug.h>
#include <cfg/module.h>
#include <drv/timer.h>
#include <drv/pwm.h>
#include <cpu/irq.h>
#include <cpu/types.h>

Go to the source code of this file.

Defines

#define LCD_PAGES   4
 Number of LCD pages.
#define LCD_PAGESIZE   (LCD_WIDTH / 2)
 Width of an LCD page.
32122A Commands

#define LCD_CMD_DISPLAY_ON   0xAF
#define LCD_CMD_DISPLAY_OFF   0xAE
#define LCD_CMD_STARTLINE   0xC0
#define LCD_CMD_PAGEADDR   0xB8
#define LCD_CMD_COLADDR   0x00
#define LCD_CMD_ADC_LEFT   0xA1
#define LCD_CMD_ADC_RIGHT   0xA0
#define LCD_CMD_STATIC_OFF   0xA4
#define LCD_CMD_STATIC_ON   0xA5
#define LCD_CMD_DUTY_32   0xA9
#define LCD_CMD_DUTY_16   0xA8
#define LCD_CMD_RMW_ON   0xE0
#define LCD_CMD_RMW_OFF   0xEE
#define LCD_CMD_RESET   0xE2

Functions

uint8_t lcd_32122_read (uint8_t chip)
void lcd_32122_write (uint8_t c, uint8_t chip)
void lcd_32122_setPwm (int duty)
 Set LCD contrast PWM.
void lcd_32122_blitBitmap (const Bitmap *bm)
 Update the LCD display with data from the provided bitmap.
void lcd_32122_init (void)
 Initialize LCD subsystem.

Variables

static uint8_t lcd_raster [RAST_SIZE(LCD_WIDTH, LCD_HEIGHT)]
 Raster buffer to draw into.
struct Bitmap lcd_bitmap
 Default LCD bitmap.

Detailed Description

Displaytech 32122A LCD driver.

Author:
Bernie Innocenti <bernie@codewiz.org>
Stefano Fedrigo <aleph@develer.com>

Definition in file lcd_32122a.c.

Function Documentation

void lcd_32122_init ( void   ) 

Initialize LCD subsystem.

Note:
The PWM used for LCD contrast is initialized in drv/pwm.c because it is the same PWM used for output attenuation.

Definition at line 306 of file lcd_32122a.c.

uint8_t lcd_32122_read ( uint8_t  chip  )  [inline] 

      __________________
 A0   __/            \__
         ____________
 R/W  __/            \__
            _______
 E1   _____/       \____

 DATA -------<=====>----

Definition at line 171 of file lcd_32122a.c.

void lcd_32122_write ( uint8_t  c,
uint8_t  chip 
) [inline] 

      __________________
 A0   ___/          \___

 R/W  __________________
            ______
 E1   _____/      \_____

 DATA -<==============>-

Definition at line 204 of file lcd_32122a.c.

Variable Documentation

uint8_t lcd_raster[RAST_SIZE(LCD_WIDTH, LCD_HEIGHT)] [static]

Raster buffer to draw into.

Bits in the bitmap bytes have vertical orientation, as required by the LCD driver.

Definition at line 132 of file lcd_32122a.c.