// lcd.h 寄存器定义，参照上个程序 #include "lcd.h" void (*printf)(char *, ...) = 0x33f9291C; static unsigned short *fb = 0x32000000; //---------------数据手册413 页 --------------- //5:6:5 格式,去除低位可以减少误差 #define RGB565(r, g, b) ((r >> 3) << 11 | (g >> 2) << 5 | (b >> 3)) void clr_fb(void); void fill_fb(int start_x, int end_x, int start_y, int end_y, unsigned short val); void draw_point(int x, int y, int clor); void draw_line(int x1,int y1,int x2,int y2,int color); void draw_circle(int x, int y, int r, int color); void _start(void) { //LCD 初始化，参照上个程序 init_lcd(); //start lcd LCDCON1 |= ENVID(1); LCDCON5 |= PWREN(1); //清屏幕 clr_fb(); //-------------画奥运5 色环----------------------- draw_circle(35, 35, 35, RGB565(0, 0, 255)); draw_circle(115, 35, 35, RGB565(0, 255, 255)); draw_circle(195, 35, 35, RGB565(255, 0, 0)); draw_circle(70, 70, 35, RGB565(255, 255, 0)); draw_circle(150, 70, 35, RGB565(0, 255, 0)); //------------画奥运下面的正四方形--------------- draw_line(90, 150, 140, 150, RGB565(255, 0, 255)); draw_line(90, 150, 90, 200, RGB565(255, 0, 255)); draw_line(90, 200, 140, 200, RGB565(255, 0, 255)); draw_line(140, 150, 140, 200, RGB565(255, 0, 255)); //------------画奥运下面的斜45 度四方形------------ draw_line(115, 140, 80, 175, RGB565(255, 0, 255)); draw_line(80, 175, 115, 210, RGB565(255, 0, 255)); draw_line(115, 210, 150, 175, RGB565(255, 0, 255)); draw_line(150, 175, 115, 140, RGB565(255, 0, 255)); //------------画纵坐标--------------------------- draw_line(250, 250, 479, 250, RGB565(255, 255, 0)); draw_line(479, 250, 465, 240, RGB565(255, 255, 0)); draw_line(479, 250, 465, 260, RGB565(255, 255, 0)); //------------画横坐标--------------------------- draw_line(250, 1, 250, 250, RGB565(255, 255, 0)); draw_line(250, 1, 240,...
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