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rtt-f030/bsp/fm3/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 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;
struct rtgui_lcd_device
{
struct rt_device parent;
rt_uint16_t width;
rt_uint16_t height;
void* hw_framebuffer;
};
static struct rtgui_lcd_device *lcd = RT_NULL;
void Power_Delay(void)
{
rt_uint32_t i=0x4ffff;
while(i--)
;//asm("nop");
}
void Delay(void)
{
rt_uint8_t i=0x8;
while(i--)
;//asm("nop");
}
void Reset_Delay(void)
{
rt_uint8_t i=0xff;
while(i--)
;//asm("nop");
}
void LCD_WriteCmd(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_WriteData(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(rtgui_rect_t *rect)
{
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_WriteCmd(Set_Page_Addr_0|i);
LCD_WriteCmd(Set_ColH_Addr_0);
LCD_WriteCmd(Set_ColL_Addr_0);
j = GUI_LCM_XMAX;
while (j--)
{
LCD_WriteData(*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, rt_base_t x, rt_base_t y)
{
rt_uint8_t page;
page = y/8;
if (*c == black)
gui_disp_buf[page][x] |= 1<<(y%8);
else
if (*c == white)
gui_disp_buf[page][x] &= ~(1<<(y%8));
}
static void rt_hw_lcd_get_pixel(rtgui_color_t *c, rt_base_t x, rt_base_t 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, rt_base_t x1, rt_base_t x2, rt_base_t y)
{
rt_uint8_t page;
rt_uint8_t i;
page = y/8;
for (i=x1; i<x2; i++)
{
if (*c == black)
gui_disp_buf[page][i] |= 1<<(y%8);
else
if (*c == white)
gui_disp_buf[page][i] &= ~(1<<(y%8));
}
}
static void rt_hw_lcd_draw_vline(rtgui_color_t *c, rt_base_t x, rt_base_t y1, rt_base_t 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, rt_base_t x1, rt_base_t x2, rt_base_t 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_WriteCmd(Set_Page_Addr_0 | page);
LCD_WriteCmd(Set_ColH_Addr_0 | colh);
LCD_WriteCmd(Set_ColL_Addr_0 | coll);
LCD_WriteData(gui_disp_buf[page][i]);
}
}
struct rtgui_graphic_driver _rtgui_lcd_driver =
{
"lcd",
1,
LCD_WIDTH,
LCD_HEIGHT,
rt_hw_lcd_update,
rt_hw_lcd_get_framebuffer,
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_WriteCmd(Display_Off);
Reset_Delay();
// Resetting circuit
LCD_WriteCmd(Reset_LCD);
Reset_Delay();
// LCD bias setting
LCD_WriteCmd(Set_LCD_Bias_9);
Reset_Delay();
// ADC selection: display from left to right
LCD_WriteCmd(Set_ADC_Normal);
Reset_Delay();
// Common output state selection: display from up to down
LCD_WriteCmd(COM_Scan_Dir_Reverse);
Reset_Delay();
LCD_WriteCmd(Power_Booster_On);
Power_Delay(); // 50ms requried
LCD_WriteCmd(Power_Regulator_On);
Power_Delay(); // 50ms
LCD_WriteCmd(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_WriteCmd(Set_ElecVol_Reg|0x05);
Delay();
LCD_WriteCmd(Set_ElecVol_Mode);
Delay();
LCD_WriteCmd(Set_ElecVol_Reg);
Delay();
// LCD_Clear();
Delay();
LCD_WriteCmd(Set_Page_Addr_0);
Delay();
LCD_WriteCmd(Set_ColH_Addr_0);
Delay();
LCD_WriteCmd(Set_ColL_Addr_0);
Delay();
LCD_WriteCmd(Display_On);
Delay();
LCD_WriteCmd(Display_All_On);
Delay();
LCD_WriteCmd(Display_Off);
Delay();
LCD_WriteCmd(Display_On);
Delay();
LCD_WriteCmd(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_WriteCmd(Set_Page_Addr_0|i);
LCD_WriteCmd(Set_ColH_Addr_0);
LCD_WriteCmd(Set_ColL_Addr_0);
j = GUI_LCM_XMAX;
while (j--)
{
LCD_WriteData(*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_WriteCmd(Set_Page_Addr_0 | page); // page no.
LCD_WriteCmd(Set_ColH_Addr_0 | colh); // fixed col first addr
LCD_WriteCmd(Set_ColL_Addr_0 | coll);
LCD_WriteData(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)
{
case RT_DEVICE_CTRL_LCD_GET_WIDTH:
*((rt_uint16_t*)args) = lcd->width;
break;
case RT_DEVICE_CTRL_LCD_GET_HEIGHT:
*((rt_uint16_t*)args) = lcd->height;
break;
case RT_DEVICE_CTRL_LCD_DISPLAY_ON:
LCD_WriteCmd(Display_On);
break;
case RT_DEVICE_CTRL_LCD_DISPLAY_OFF:
LCD_WriteCmd(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;
}
return RT_EOK;
}
static rt_err_t rt_lcd_open(rt_device_t dev, rt_uint16_t oflag)
{
RT_ASSERT(dev != RT_NULL);
return RT_EOK;
}
static rt_err_t rt_lcd_close(rt_device_t dev)
{
RT_ASSERT(dev != RT_NULL);
return RT_EOK;
}
void rt_hw_lcd_init(void)
{
lcd = (struct rtgui_lcd_device*)rt_malloc(sizeof(struct rtgui_lcd_device));
if (lcd == RT_NULL)
return; /* no memory yet */
/* init device structure */
lcd->parent.type = RT_Device_Class_Unknown;
lcd->parent.init = rt_lcd_init;
lcd->parent.open = rt_lcd_open;
lcd->parent.close = rt_lcd_close;
lcd->parent.control = rt_lcd_control;
lcd->parent.user_data = RT_NULL;
lcd->width = LCD_WIDTH;
lcd->height = LCD_HEIGHT;
lcd->hw_framebuffer = (void*)gui_disp_buf;
/* register touch device to RT-Thread */
rt_device_register(&(lcd->parent), "lcd", RT_DEVICE_FLAG_RDWR);
#ifdef RT_USING_RTGUI
/* add lcd driver into graphic driver */
rtgui_graphic_driver_add(&_rtgui_lcd_driver);
#endif
}
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