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