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rt-thread/bsp/mb9bf500r/lcd.c

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/*
* File : lcd.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2011, RT-Thread Develop Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2011-03-05 lgnq ZYMG12864C3 LCD driver
*/
#include <rtthread.h>
#include "lcd.h"
#include "font.h"
static struct rt_device_graphic_info _lcd_info;
static rt_uint8_t gui_disp_buf[GUI_LCM_YMAX/8][GUI_LCM_XMAX];
const unsigned char BIT_MASK[8] = {0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01};
/* simple font: ' ', '0'~'9','a'~'z','A'~'Z' */
extern const unsigned char FONTTYPE8_8[][8];
rt_uint32_t x;
rt_uint32_t y;
void power_delay(void)
{
rt_uint32_t i = 0x4ffff;
while(i--)
;
}
void delay(void)
{
rt_uint8_t i = 0x8;
while(i--)
;
}
void reset_delay(void)
{
rt_uint8_t i = 0xff;
while(i--)
;
}
void lcd_write_cmd(unsigned char command)
{
rt_uint8_t i;
LCD_PS_LOW();
LCD_CS_LOW();
LCD_CD_LOW();
for (i=0; i<8; i++)
{
if (command & (0x80 >> i))
LCD_DATA_HIGH();
else
LCD_DATA_LOW();
LCD_CLK_LOW();
delay();
LCD_CLK_HIGH();
delay();
}
LCD_CS_HIGH();
}
void lcd_write_data(unsigned char data)
{
rt_uint8_t i;
LCD_PS_LOW();
LCD_CS_LOW();
LCD_CD_HIGH();
for (i=0; i<8; i++)
{
if (data & (0x80 >> i))
LCD_DATA_HIGH();
else
LCD_DATA_LOW();
LCD_CLK_LOW();
delay();
LCD_CLK_HIGH();
delay();
}
LCD_CS_HIGH();
}
#ifdef RT_USING_RTGUI
#include <rtgui/driver.h>
#include <rtgui/color.h>
static void rt_hw_lcd_update(struct rt_device_rect_info *rect_info)
{
rt_uint8_t i,j = GUI_LCM_XMAX;
rt_uint8_t* p = (rt_uint8_t*)gui_disp_buf;
for (i=0; i<GUI_LCM_PAGE; i++)
{
lcd_write_cmd(SET_PAGE_ADDR_0|i);
lcd_write_cmd(SET_COLH_ADDR_0);
lcd_write_cmd(SET_COLL_ADDR_0);
j = GUI_LCM_XMAX;
while (j--)
{
lcd_write_data(*p++);
delay();
}
}
}
static rt_uint8_t * rt_hw_lcd_get_framebuffer(void)
{
return(rt_uint8_t *)gui_disp_buf;
}
static void rt_hw_lcd_set_pixel(rtgui_color_t *c, int x, int y)
{
rt_uint8_t page;
page = y/8;
if (*c == rtgui_color_to_565(black))
gui_disp_buf[page][x] |= 1<<(y%8);
else
if (*c == rtgui_color_to_565(white))
gui_disp_buf[page][x] &= ~(1<<(y%8));
}
static void rt_hw_lcd_get_pixel(rtgui_color_t *c, int x, int y)
{
rt_uint8_t page;
page = y/8;
if (gui_disp_buf[page][x] & (1<<(y%8)))
*c = black;
else
*c = white;
}
static void rt_hw_lcd_draw_hline(rtgui_color_t *c, int x1, int x2, int y)
{
rt_uint8_t page;
rt_uint8_t i;
page = y/8;
for (i=x1; i<x2; i++)
{
if (*c == rtgui_color_to_565(black))
gui_disp_buf[page][i] |= 1<<(y%8);
else
if (*c == rtgui_color_to_565(white))
gui_disp_buf[page][i] &= ~(1<<(y%8));
}
}
static void rt_hw_lcd_draw_vline(rtgui_color_t *c, int x, int y1, int y2)
{
rt_uint8_t y;
for (y = y1; y < y2; y ++)
{
rt_hw_lcd_set_pixel(c, x, y);
}
}
static void rt_hw_lcd_draw_raw_hline(rt_uint8_t *pixels, int x1, int x2, int y)
{
rt_uint8_t coll;
rt_uint8_t colh;
rt_uint8_t page;
rt_uint8_t i;
page = y/8;
for (i=x1; i<x2; i++)
{
gui_disp_buf[page][i] |= 1<<(y%8);
coll = i & 0x0f;
colh = i >> 4;
lcd_write_cmd(SET_PAGE_ADDR_0 | page);
lcd_write_cmd(SET_COLH_ADDR_0 | colh);
lcd_write_cmd(SET_COLL_ADDR_0 | coll);
lcd_write_data(gui_disp_buf[page][i]);
}
}
const struct rtgui_graphic_driver_ops _lcd_ops =
{
rt_hw_lcd_set_pixel,
rt_hw_lcd_get_pixel,
rt_hw_lcd_draw_hline,
rt_hw_lcd_draw_vline,
rt_hw_lcd_draw_raw_hline
};
#endif
void lcd_io_init()
{
/* Release the analog input function*/
FM3_GPIO->ADE =0x03;
/*Select CPIO function*/
LCD_CS_PFR &= ~LCD_CS;
/*Make pin output*/
LCD_CS_DDR |= LCD_CS;
/*Select CPIO function*/
LCD_CD_PFR &= ~LCD_CD;
/*Make pin output*/
LCD_CD_DDR |= LCD_CD;
/*Select CPIO function*/
LCD_PS_PFR &= ~LCD_PS;
/*Make pin output*/
LCD_PS_DDR |= LCD_PS;
/*Select CPIO function*/
LCD_CLK_PFR &= ~LCD_CLK;
/*Make pin output*/
LCD_CLK_DDR |= LCD_CLK;
/*Select CPIO function*/
LCD_DATA_PFR &= ~LCD_DATA;
/*Make pin output*/
LCD_DATA_DDR |= LCD_DATA;
}
/* RT-Thread Device Interface */
static rt_err_t rt_lcd_init (rt_device_t dev)
{
lcd_io_init();
power_delay();
lcd_write_cmd(DISPLAY_OFF);
reset_delay();
// Resetting circuit
lcd_write_cmd(RESET_LCD);
reset_delay();
// LCD bias setting
lcd_write_cmd(SET_LCD_BIAS_9);
reset_delay();
// ADC selection: display from left to right
lcd_write_cmd(SET_ADC_NORMAL);
reset_delay();
// Common output state selection: display from up to down
lcd_write_cmd(COM_SCAN_DIR_REVERSE);
reset_delay();
lcd_write_cmd(POWER_BOOSTER_ON);
power_delay(); // 50ms requried
lcd_write_cmd(POWER_REGULATOR_ON);
power_delay(); // 50ms
lcd_write_cmd(POWER_FOLLOWER_ON);
power_delay(); // 50ms
// Setting the built-in resistance radio for regulation of the V0 voltage
// Electronic volume control
// Power control setting
lcd_write_cmd(SET_ELECVOL_REG|0x05);
delay();
lcd_write_cmd(SET_ELECVOL_MODE);
delay();
lcd_write_cmd(SET_ELECVOL_REG);
delay();
// LCD_Clear();
delay();
lcd_write_cmd(SET_PAGE_ADDR_0);
delay();
lcd_write_cmd(SET_COLH_ADDR_0);
delay();
lcd_write_cmd(SET_COLL_ADDR_0);
delay();
lcd_write_cmd(DISPLAY_ON);
delay();
lcd_write_cmd(DISPLAY_ALL_ON);
delay();
lcd_write_cmd(DISPLAY_OFF);
delay();
lcd_write_cmd(DISPLAY_ON);
delay();
lcd_write_cmd(DISPLAY_ALL_NORMAL);
delay();
return RT_EOK;
}
/*******************************************************************************
* Function Name : LCD_FillAll
* Description : Fill the whole LCD.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCD_FillAll(unsigned char* buffer)
{
unsigned char i,j = GUI_LCM_XMAX;
unsigned char* p = buffer;
for (i=0; i<GUI_LCM_PAGE; i++)
{
lcd_write_cmd(SET_PAGE_ADDR_0|i);
lcd_write_cmd(SET_COLH_ADDR_0);
lcd_write_cmd(SET_COLL_ADDR_0);
j = GUI_LCM_XMAX;
while (j--)
{
lcd_write_data(*p++);
delay();
}
}
}
/*******************************************************************************
* Function Name : LCD_ClearSCR
* Description : clean screen
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCD_ClearSCR(void)
{
unsigned char i, j;
for(i=0; i<GUI_LCM_PAGE; i++)
{
for(j = 0; j < GUI_LCM_XMAX; j++)
gui_disp_buf[i][j] = 0;
}
LCD_FillAll((unsigned char*)gui_disp_buf);
}
/****************************************************************************
* Function Name : LCD_UpdatePoint
* Description : refresh the point in screen
* Input : x X-coordinate
y Y-coordinate
* Output : None
* Return : None
****************************************************************************/
void LCD_UpdatePoint(unsigned int x, unsigned int y)
{
unsigned char coll, colh, page;
page = y / 8;
coll = x & 0x0f;
colh = x >> 4;
lcd_write_cmd(SET_PAGE_ADDR_0 | page); // page no.
lcd_write_cmd(SET_COLH_ADDR_0 | colh); // fixed col first addr
lcd_write_cmd(SET_COLL_ADDR_0 | coll);
lcd_write_data(gui_disp_buf[page][x]);
}
/****************************************************************************
* Function Name : LCD_PutChar
* Description : output a char to screen
(the char only can be ' ','0'~'9','A'~'Z','a'~'z')
* Input : x X-coordinate
y Y-coordinate
ch character
* Output : None
* Return : 1 Success
0 Fail
****************************************************************************/
unsigned char LCD_PutChar(unsigned long x, unsigned long y, unsigned char ch)
{
unsigned char data;
unsigned char i, j;
if( x >=(GUI_LCM_XMAX-8) ) return(0);
if( y >=(GUI_LCM_YMAX-8) ) return(0);
if(ch == 0x20)
ch -= 0x20;
else if((ch >= 0x30)&&(ch <= 0x39))
ch -= 0x2f;
else if((ch >= 0x41)&&(ch <= 0x5a))
ch -= 0x36;
else if((ch >= 0x61)&&(ch <= 0x7a))
ch -= 0x3C;
else
return(0);
for(i = 0; i < 8; i++)
{
data = FONTTYPE8_8[ch][i];
for(j = 0; j < 8; j++)
{
if( (data&BIT_MASK[j]) == 0)
gui_disp_buf[y / 8][x] &= (~(0x01 << ( y % 8)));
else
gui_disp_buf[y / 8][x] |= (0x01 <<( y % 8));
LCD_UpdatePoint(x, y);
x ++;
}
x -= 8;
y++;
}
return(1);
}
/****************************************************************************
* Function Name : LCD_PutString
* Description : output string to screen
* Input : x X-coordinate
y Y-coordinate
str pointer to string
* Output : None
* Return : None
****************************************************************************/
void LCD_PutString(unsigned long x, unsigned long y, char *str)
{
while(1)
{
if( (*str)=='\0' ) break;
if( LCD_PutChar(x, y, *str++) == 0 ) break;
x += 6;
}
}
static rt_err_t rt_lcd_control (rt_device_t dev, rt_uint8_t cmd, void *args)
{
switch (cmd)
{
#ifdef RT_USING_RTGUI
case RTGRAPHIC_CTRL_RECT_UPDATE:
rt_hw_lcd_update(args);
break;
case RTGRAPHIC_CTRL_POWERON:
break;
case RTGRAPHIC_CTRL_POWEROFF:
break;
case RTGRAPHIC_CTRL_GET_INFO:
rt_memcpy(args, &_lcd_info, sizeof(_lcd_info));
break;
case RTGRAPHIC_CTRL_SET_MODE:
break;
#else
case RT_DEVICE_CTRL_LCD_DISPLAY_ON:
lcd_write_cmd(DISPLAY_ON);
break;
case RT_DEVICE_CTRL_LCD_DISPLAY_OFF:
lcd_write_cmd(DISPLAY_OFF);
break;
case RT_DEVICE_CTRL_LCD_PUT_STRING:
LCD_PutString(x, y, (char*)args);
break;
case RT_DEVICE_CTRL_LCD_CLEAR_SCR:
LCD_ClearSCR();
break;
#endif
}
return RT_EOK;
}
void rt_hw_lcd_init(void)
{
rt_device_t lcd = rt_malloc(sizeof(struct rt_device));
if (lcd == RT_NULL) return; /* no memory yet */
_lcd_info.bits_per_pixel = 16;
_lcd_info.pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB565;
_lcd_info.framebuffer = RT_NULL;
_lcd_info.width = LCD_WIDTH;
_lcd_info.height = LCD_HEIGHT;
/* init device structure */
lcd->type = RT_Device_Class_Unknown;
lcd->init = rt_lcd_init;
lcd->open = RT_NULL;
lcd->close = RT_NULL;
lcd->control = rt_lcd_control;
#ifdef RT_USING_RTGUI
lcd->user_data = (void*)&_lcd_ops;
#endif
/* register lcd device to RT-Thread */
rt_device_register(lcd, "lcd", RT_DEVICE_FLAG_RDWR);
}
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