at91sam9261 串口与usb转串口通讯 lcd显示

#include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <sys/mman.h> #include <linux/fb.h> #include <unistd.h> #include <termios.h> #include <linux/kd.h> #include <sys/ioctl.h> #include <ctype.h> #include <string.h> #include "video.h" extern unsigned int COLOR; extern unsigned char PUT_MODE; extern unsigned int TEXT_FGCOLOR; extern unsigned int TEXT_BGCOLOR; int InitFrameBuffer(int* fb) { struct fb_fix_screeninfo finfo; struct fb_var_screeninfo vinfo; int tty; //Open framebuffer device *fb = open ( "/dev/fb0", O_RDWR); if ( ! (*fb) ){ printf("Can't open framebuffer device.\n"); return -1; } //Get framebuffer device infomation if( ioctl ( *fb, FBIOGET_FSCREENINFO, &finfo ) ){ printf("Error reading fixed framebuffer information.\n"); return -2; } fprintf(stderr, "Printing finfo:\n"); fprintf(stderr, "tsmem_start = %p\n", (char *)finfo.smem_start); fprintf(stderr, "tsmem_len = %d\n", finfo.smem_len); fprintf(stderr, "ttype = %d\n", finfo.type); fprintf(stderr, "ttype_aux = %d\n", finfo.type_aux); fprintf(stderr, "tvisual = %d\n", finfo.visual); //fprintf(stderr, "txpanstep = %d\n", finfo.panstep); fprintf(stderr, "typanstep = %d\n", finfo.ypanstep); fprintf(stderr, "tywrapstep = %d\n", finfo.ywrapstep); fprintf(stderr, "tline_length = %d\n", finfo.line_length); fprintf(stderr, "tmmio_start = %p\n", (char *)finfo.mmio_start); fprintf(stderr, "tmmio_len = %d\n", finfo.mmio_len); fprintf(stderr, "taccel = %d\n", finfo.accel); if( ioctl ( *fb, FBIOGET_VSCREENINFO, &vinfo ) ){ printf("Error reading variable framebuffer information.\n"); return -3; } fprintf(stderr, "Printing vinfo:\n"); fprintf(stderr, "txres: %d\n", vinfo.xres); fprintf(stderr, "tyres: %d\n", vinfo.yres); fprintf(stderr, "txres_virtual: %d\n", vinfo.xres_virtual); fprintf(stderr, "tyres_virtual: %d\n", vinfo.yres_virtual); fprintf(stderr, "txoffset: %d\n", vinfo.xoffset); fprintf(stderr, "tyoffset: %d\n", vinfo.yoffset); fprintf(stderr, "tbits_per_pixel: %d\n", vinfo.bits_per_pixel); fprintf(stderr, "tgrayscale: %d\n", vinfo.grayscale); fprintf(stderr, "tnonstd: %d\n", vinfo.nonstd); fprintf(stderr, "tactivate: %d\n", vinfo.activate); fprintf(stderr, "theight: %d\n", vinfo.height); fprintf(stderr, "twidth: %d\n", vinfo.width); fprintf(stderr, "taccel_flags: %d\n", vinfo.accel_flags); fprintf(stderr, "tpixclock: %d\n", vinfo.pixclock); fprintf(stderr, "tleft_margin: %d\n", vinfo.left_margin); fprintf(stderr, "tright_margin: %d\n", vinfo.right_margin); fprintf(stderr, "tupper_margin: %d\n", vinfo.upper_margin); fprintf(stderr, "tlower_margin: %d\n", vinfo.lower_margin); fprintf(stderr, "thsync_len: %d\n", vinfo.hsync_len); fprintf(stderr, "tvsync_len: %d\n", vinfo.vsync_len); fprintf(stderr, "tsync: %d\n", vinfo.sync); fprintf(stderr, "tvmode: %d\n", vinfo.vmode); fprintf(stderr, " length offset\n"); fprintf(stderr, "tred: %d/%d\n", vinfo.red.length, vinfo.red.offset); fprintf(stderr, "tgreen: %d/%d\n", vinfo.green.length, vinfo.green.offset); fprintf(stderr, "tblue: %d/%d\n", vinfo.blue.length, vinfo.blue.offset); fprintf(stderr, "talpha: %d/%d\n", vinfo.transp.length, vinfo.transp.offset); if( ( vinfo.bits_per_pixel/8 != BYTE_PER_PIXEL ) || \ ( vinfo.xres != MAX_X ) || ( vinfo.yres != MAX_Y ) ){ printf( "Display mode error: bits=%d x=%d y=%d\n", vinfo.width/8, vinfo.xres, vinfo.yres ); return -4; } if((hzk16fp=fopen("/home/root/hzk16","rb"))==NULL){ printf ( "Can't open hzk16 file\n" ); return -7; } if((hzk12fp=fopen("/home/root/hzk12","rb"))==NULL){ printf ( "Can't open hzk12 file\n" ); return -8; } if((ascfp=fopen("/home/root/asc1008","rb"))==NULL){ printf ( "Can't open asc1008 file\n" ); return -9; } fb_mem = mmap ( NULL, MAX_X*MAX_Y*BYTE_PER_PIXEL, PROT_READ|PROT_WRITE, MAP_SHARED, *fb, 0 ); memset ( fb_mem, 0, MAX_X*MAX_Y*BYTE_PER_PIXEL );//clear screen return 0; } void CloseFrameBuffer(int *fb) { int tty; tty = open ( "/dev/tty", O_RDONLY ); ioctl ( tty, KDSETMODE, KD_TEXT ); close ( tty ); fclose ( hzk16fp ); fclose ( hzk12fp ); fclose ( ascfp ); close ( *fb ); } void putpixel ( unsigned int x, unsigned int y ) { unsigned long offset; int color; ARRAY4 oldcolor; if( x >= MAX_X ) { x=MAX_X-1; } if( y >=MAX_Y ) { y=MAX_Y-1; } color=COLOR; offset = (y*MAX_X*BYTE_PER_PIXEL)+( x*BYTE_PER_PIXEL ); if( PUT_MODE != PUT_SET ){ memcpy ( oldcolor.c, fb_mem+offset, BYTE_PER_PIXEL ); switch( PUT_MODE ){ case PUT_XOR: color^=oldcolor.l; break; case PUT_OR: color|=oldcolor.l; break; case PUT_AND: color&=oldcolor.l; break; case PUT_NOT: color=~color; break; } } memset ( fb_mem+offset, color, BYTE_PER_PIXEL ); } /*-------------------------------------------------*/ /* */ /*This function draw a horizontal/vertical gap line*/ /* */ /*-------------------------------------------------*/ void putgapline ( unsigned int x1, unsigned int y1, unsigned int x2, unsigned y2 ) { unsigned long offset; int i; unsigned char step; if ( x1 >= MAX_X ) { x1 = MAX_X-1; } if ( x2 >= MAX_X ) { x2 = MAX_X-1; } if ( y1 >= MAX_Y ) { y1 = MAX_Y-1; } if ( y2 >= MAX_Y ) { y2 = MAX_Y-1; } if ( x1 > x2 ) { i = x1; x1 = x2; x2 = i; } if ( y1 > y2 ) { i = y1; y1 = y2; y2 = i; } offset = ( y1*MAX_X*BYTE_PER_PIXEL ) + ( x1*BYTE_PER_PIXEL ); if( x1 != x2 ) { //horizontal gap line unsigned char step=3; unsigned int bytes; for ( i = 0; i <= x2-x1; i+=step ) { bytes = step*BYTE_PER_PIXEL; if ( 3 == step ){ bytes = step*BYTE_PER_PIXEL; memset ( fb_mem+offset, COLOR, bytes); offset+=bytes; step=2; }else{ offset+=bytes; step=3; } } }else{ //vertical gap line unsigned int xbytes; xbytes=MAX_X*BYTE_PER_PIXEL; for ( i = 0; i <= y2-y1; i++ ) { if ( i%5 < 3 ) { memset ( fb_mem+offset, COLOR, BYTE_PER_PIXEL ); } offset += xbytes; } } } void putline ( unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2 ) { unsigned long offset; unsigned int i,xbytes; int dx,dy,dm,dn,m,n,k,u,v,l,sum; char t; dx=x2-x1; dy=y2-y1; offset = ( y1*MAX_X*BYTE_PER_PIXEL ) + ( x1*BYTE_PER_PIXEL ); if( 0 == dx){ if( dy < 0 ){ i = y1; y1 = y2; y2 = y1; } xbytes=MAX_X*BYTE_PER_PIXEL; for(i=y1;i<=y2;i++){ memset ( fb_mem+offset, COLOR, BYTE_PER_PIXEL ); offset += xbytes; }//--for(l=u..) return; }//---end if(dx==0)--- if( 0 == dy ){ if( dx < 0 ){ i = x2; x1 = x2; x2 = x1; } memset ( fb_mem+offset, COLOR, (x2-x1)*BYTE_PER_PIXEL ); return; }//---end if(dy==0)--- dm=1;dn=1; if(dy<0){ dy=-dy; dm=-1; } if(dx<0){ dx=-dx; dn=-1; } n=dx; m=dy; k=1; v=x1; u=y1; if(dy<dx){ m=dx; n=dy; k=dm; dm=dn; dn=k; k=0; u=x1; v=y1; } memset ( fb_mem+offset, COLOR, BYTE_PER_PIXEL ); l=0; sum=m; while(sum!=0){ sum=sum-1; l=l+n; u=u+dm; if(l>=m){ v=v+dn; l=l-m; }; if(k==1){//---putpixel(v,u)--- offset = ( u*MAX_X*BYTE_PER_PIXEL ) + ( v*BYTE_PER_PIXEL ); memset ( fb_mem+offset, COLOR, BYTE_PER_PIXEL ); }else{ //---putpixel(u,v)--- offset = ( v*MAX_X*BYTE_PER_PIXEL ) + ( u*BYTE_PER_PIXEL ); memset ( fb_mem+offset, COLOR, BYTE_PER_PIXEL ); }//--end else }//--end while(sum!=0) } void fillrect ( unsigned int x1, unsigned int y1, unsigned int x2, unsigned int y2, int color ) { int i; int xlen; unsigned long offset; if ( x1 >= MAX_X ) { x1 = MAX_X-1; } if ( x2 >= MAX_X ) { x2 = MAX_X-1; } if ( y1 >= MAX_Y ) { y1 = MAX_Y-1; } if ( y2 >= MAX_Y ) { y2 = MAX_Y-1; } if ( x2 - x1 < 0 ) { i=x2; x2=x1; x1=i; } if ( y2 - y1 < 0 ) { i=y2; x2=x1; x1=i; } offset = ( y1*MAX_X*BYTE_PER_PIXEL )+( x1*BYTE_PER_PIXEL ); xlen = ( x2-x1+1 )*BYTE_PER_PIXEL; for ( i=y1; i<=y2; i++) { memset ( fb_mem+offset, color, xlen ); offset += MAX_X*BYTE_PER_PIXEL; } return; } void outtext ( unsigned int x, unsigned int y, unsigned char* str, unsigned c