diff options
Diffstat (limited to 'USBLCD.c')
| -rw-r--r-- | USBLCD.c | 352 |
1 files changed, 59 insertions, 293 deletions
@@ -1,4 +1,4 @@ -/* $Id: USBLCD.c,v 1.4 2002/08/19 04:41:20 reinelt Exp $ +/* $Id: USBLCD.c,v 1.5 2002/08/19 07:36:29 reinelt Exp $ * * Driver for USBLCD ( see http://www.usblcd.de ) * This Driver is based on HD44780.c @@ -22,6 +22,10 @@ * * * $Log: USBLCD.c,v $ + * Revision 1.5 2002/08/19 07:36:29 reinelt + * + * finished bar.c, USBLCD is the first driver that uses the generic bar functions + * * Revision 1.4 2002/08/19 04:41:20 reinelt * introduced bar.c, moved bar stuff from display.h to bar.h * @@ -74,50 +78,26 @@ #define XRES 5 #define YRES 8 #define CHARS 8 -#define BARS ( BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2 ) - -typedef struct { - int len1; - int len2; - int type; - int segment; -} BAR; - -typedef struct { - int len1; - int len2; - int type; - int used; - int ascii; -} SEGMENT; static LCD Lcd; int usblcd_file; static char *Port=NULL; - - static char Txt[4][40]; -static BAR Bar[4][40]; - -static int nSegment=2; -static SEGMENT Segment[128] = {{ len1:0, len2:0, type:255, used:0, ascii:32 }, - { len1:255, len2:255, type:255, used:0, ascii:255 }}; - static unsigned char Buffer[1024]; static unsigned char *BufPtr; static void USBLCD_send () { - struct timeval now, end; - gettimeofday (&now, NULL); + // struct timeval now, end; + // gettimeofday (&now, NULL); write(usblcd_file,Buffer,BufPtr-Buffer); - gettimeofday (&end, NULL); - debug ("send %d: %d usec (%d usec/byte)", BufPtr-Buffer, 1000000*(end.tv_sec-now.tv_sec)+end.tv_usec-now.tv_usec, (1000000*(end.tv_sec-now.tv_sec)+end.tv_usec-now.tv_usec)/(BufPtr-Buffer)); + // gettimeofday (&end, NULL); + // debug ("send %d: %d usec (%d usec/byte)", BufPtr-Buffer, 1000000*(end.tv_sec-now.tv_sec)+end.tv_usec-now.tv_usec, (1000000*(end.tv_sec-now.tv_sec)+end.tv_usec-now.tv_usec)/(BufPtr-Buffer)); BufPtr=Buffer; @@ -149,45 +129,39 @@ static int USBLCD_open (void) error ("USBLCD: open(%s) failed: %s", Port, strerror(errno)); return -1; } - + memset(buf,0,sizeof(buf)); - - if( ioctl(usblcd_file,GET_DRV_VERSION, buf)!=0) { + if (ioctl(usblcd_file,GET_DRV_VERSION, buf)!=0) { error ("USBLCD: ioctl() failed, could not get Driver Version!"); return -2; - } ; - + } debug("Driver Version: %s",buf); - if( sscanf(buf,"USBLCD Driver Version %d.%d",&major,&minor)!=2) { + if (sscanf(buf,"USBLCD Driver Version %d.%d",&major,&minor)!=2) { error("USBLCD: could not read Driver Version!"); return -4; - }; - - if(major!=1) { + } + if (major!=1) { error("USBLCD: Driver Version not supported!"); return -4; } memset(buf,0,sizeof(buf)); - - if( ioctl(usblcd_file,GET_HARD_VERSION, buf)!=0) { + if (ioctl(usblcd_file,GET_HARD_VERSION, buf)!=0) { error ("USBLCD: ioctl() failed, could not get Hardware Version!"); return -3; - } ; - + } debug("Hardware Version: %s",buf); - if( sscanf(buf,"%d.%d",&major,&minor)!=2) { + if (sscanf(buf,"%d.%d",&major,&minor)!=2) { error("USBLCD: could not read Hardware Version!"); return -4; }; - - if(major!=1) { + if (major!=1) { error("USBLCD: Hardware Version not supported!"); return -4; } - + BufPtr=Buffer; USBLCD_command (0x29); // 8 Bit mode, 1/16 duty cycle, 5x8 font @@ -198,172 +172,12 @@ static int USBLCD_open (void) return 0; } -static void USBLCD_process_bars (void) -{ - int row, col; - int i, j; - - for (i=2; i<nSegment && Segment[i].used; i++); - for (j=i+1; j<nSegment; j++) { - if (Segment[j].used) - Segment[i++]=Segment[j]; - } - nSegment=i; - - for (row=0; row<Lcd.rows; row++) { - for (col=0; col<Lcd.cols; col++) { - if (Bar[row][col].type==0) continue; - for (i=0; i<nSegment; i++) { - if (Segment[i].type & Bar[row][col].type && - Segment[i].len1== Bar[row][col].len1 && - Segment[i].len2== Bar[row][col].len2) break; - } - if (i==nSegment) { - nSegment++; - Segment[i].len1=Bar[row][col].len1; - Segment[i].len2=Bar[row][col].len2; - Segment[i].type=Bar[row][col].type; - Segment[i].used=0; - Segment[i].ascii=-1; - } - Bar[row][col].segment=i; - } - } -} - -static int USBLCD_segment_diff (int i, int j) +static void USBLCD_define_char (int ascii, char *buffer) { - int RES; - int i1, i2, j1, j2; - - if (i==j) return 65535; - if (!(Segment[i].type & Segment[j].type)) return 65535; - if (Segment[i].len1==0 && Segment[j].len1!=0) return 65535; - if (Segment[i].len2==0 && Segment[j].len2!=0) return 65535; - RES=Segment[i].type & BAR_H ? XRES:YRES; - if (Segment[i].len1>=RES && Segment[j].len1<RES) return 65535; - if (Segment[i].len2>=RES && Segment[j].len2<RES) return 65535; - if (Segment[i].len1==Segment[i].len2 && Segment[j].len1!=Segment[j].len2) return 65535; - - i1=Segment[i].len1; if (i1>RES) i1=RES; - i2=Segment[i].len2; if (i2>RES) i2=RES; - j1=Segment[j].len1; if (j1>RES) i1=RES; - j2=Segment[j].len2; if (j2>RES) i2=RES; - - return (i1-i2)*(i1-i2)+(j1-j2)*(j1-j2); + USBLCD_command (0x40|8*ascii); + USBLCD_write (buffer, 8); } -static void USBLCD_compact_bars (void) -{ - int i, j, r, c, min; - int pack_i, pack_j; - int pass1=1; - int deviation[nSegment][nSegment]; - - if (nSegment>CHARS+2) { - - for (i=2; i<nSegment; i++) { - for (j=0; j<nSegment; j++) { - deviation[i][j]=USBLCD_segment_diff(i,j); - } - } - - while (nSegment>CHARS+2) { - min=65535; - pack_i=-1; - pack_j=-1; - for (i=2; i<nSegment; i++) { - if (pass1 && Segment[i].used) continue; - for (j=0; j<nSegment; j++) { - if (deviation[i][j]<min) { - min=deviation[i][j]; - pack_i=i; - pack_j=j; - } - } - } - if (pack_i==-1) { - if (pass1) { - pass1=0; - continue; - } else { - error ("USBLCD: unable to compact bar characters"); - nSegment=CHARS; - break; - } - } - - nSegment--; - Segment[pack_i]=Segment[nSegment]; - - for (i=0; i<nSegment; i++) { - deviation[pack_i][i]=deviation[nSegment][i]; - deviation[i][pack_i]=deviation[i][nSegment]; - } - - for (r=0; r<Lcd.rows; r++) { - for (c=0; c<Lcd.cols; c++) { - if (Bar[r][c].segment==pack_i) - Bar[r][c].segment=pack_j; - if (Bar[r][c].segment==nSegment) - Bar[r][c].segment=pack_i; - } - } - } - } -} - -static void USBLCD_define_chars (void) -{ - int c, i, j; - char buffer[8]; - - for (i=2; i<nSegment; i++) { - if (Segment[i].used) continue; - if (Segment[i].ascii!=-1) continue; - for (c=0; c<CHARS; c++) { - for (j=2; j<nSegment; j++) { - if (Segment[j].ascii==c) break; - } - if (j==nSegment) break; - } - Segment[i].ascii=c; - switch (Segment[i].type) { - case BAR_L: - for (j=0; j<4; j++) { - char Pixel[] = { 0, 1, 3, 7, 15, 31 }; - buffer[j]=Pixel[Segment[i].len1]; - buffer[j+4]=Pixel[Segment[i].len2]; - } - break; - case BAR_R: - for (j=0; j<4; j++) { - char Pixel[] = { 0, 16, 24, 28, 30, 31 }; - buffer[j]=Pixel[Segment[i].len1]; - buffer[j+4]=Pixel[Segment[i].len2]; - } - break; - case BAR_U: - for (j=0; j<Segment[i].len1; j++) { - buffer[7-j]=31; - } - for (; j<YRES; j++) { - buffer[7-j]=0; - } - break; - case BAR_D: - for (j=0; j<Segment[i].len1; j++) { - buffer[j]=31; - } - for (; j<YRES; j++) { - buffer[j]=0; - } - break; - } - USBLCD_command (0x40|8*c); - USBLCD_write (buffer, 8); - } -} int USBLCD_clear (void) { @@ -372,16 +186,17 @@ int USBLCD_clear (void) for (row=0; row<Lcd.rows; row++) { for (col=0; col<Lcd.cols; col++) { Txt[row][col]='\t'; - Bar[row][col].len1=-1; - Bar[row][col].len2=-1; - Bar[row][col].type=0; - Bar[row][col].segment=-1; } } + + bar_clear(); + USBLCD_command (0x01); // clear display + return 0; } + int USBLCD_init (LCD *Self) { int rows=-1, cols=-1 ; @@ -421,18 +236,24 @@ int USBLCD_init (LCD *Self) if (USBLCD_open()!=0) return -1; + bar_init(rows, cols, XRES, YRES, CHARS); + bar_add_segment( 0, 0,255, 32); // ASCII 32 = blank + bar_add_segment(255,255,255,255); // ASCII 255 = block + USBLCD_clear(); USBLCD_send(); return 0; } + void USBLCD_goto (int row, int col) { int pos=(row%2)*64+(row/2)*20+col; USBLCD_command (0x80|pos); } + int USBLCD_put (int row, int col, char *text) { char *p=&Txt[row][col]; @@ -444,97 +265,26 @@ int USBLCD_put (int row, int col, char *text) return 0; } + int USBLCD_bar (int type, int row, int col, int max, int len1, int len2) { - int rev=0; - - if (len1<1) len1=1; - else if (len1>max) len1=max; - - if (len2<1) len2=1; - else if (len2>max) len2=max; - - switch (type) { - case BAR_L: - len1=max-len1; - len2=max-len2; - rev=1; - - case BAR_R: - while (max>0 && col<=Lcd.cols) { - Bar[row][col].type=type; - Bar[row][col].segment=-1; - if (len1>=XRES) { - Bar[row][col].len1=rev?0:XRES; - len1-=XRES; - } else { - Bar[row][col].len1=rev?XRES-len1:len1; - len1=0; - } - if (len2>=XRES) { - Bar[row][col].len2=rev?0:XRES; - len2-=XRES; - } else { - Bar[row][col].len2=rev?XRES-len2:len2; - len2=0; - } - max-=XRES; - col++; - } - break; - - case BAR_U: - len1=max-len1; - len2=max-len2; - rev=1; - - case BAR_D: - while (max>0 && row<=Lcd.rows) { - Bar[row][col].type=type; - Bar[row][col].segment=-1; - if (len1>=YRES) { - Bar[row][col].len1=rev?0:YRES; - len1-=YRES; - } else { - Bar[row][col].len1=rev?YRES-len1:len1; - len1=0; - } - if (len2>=YRES) { - Bar[row][col].len2=rev?0:YRES; - len2-=YRES; - } else { - Bar[row][col].len2=rev?YRES-len2:len2; - len2=0; - } - max-=YRES; - row++; - } - break; - - } - return 0; + return bar_draw (type, row, col, max, len1, len2); } + int USBLCD_flush (void) { char buffer[256]; char *p; - int s, row, col; - - USBLCD_process_bars(); - USBLCD_compact_bars(); - USBLCD_define_chars(); + int c, row, col; - for (s=0; s<nSegment; s++) { - Segment[s].used=0; - } + bar_process(&USBLCD_define_char); for (row=0; row<Lcd.rows; row++) { for (col=0; col<Lcd.cols; col++) { - s=Bar[row][col].segment; - if (s!=-1) { - Segment[s].used=1; - Txt[row][col]=Segment[s].ascii; + c=bar_peek(row, col); + if (c!=-1) { + Txt[row][col]=(char)c; } } for (col=0; col<Lcd.cols; col++) { @@ -553,6 +303,7 @@ int USBLCD_flush (void) return 0; } + int USBLCD_quit (void) { USBLCD_send(); @@ -561,7 +312,22 @@ int USBLCD_quit (void) return 0; } + LCD USBLCD[] = { - { "USBLCD",0,0,XRES,YRES,BARS,0,USBLCD_init,USBLCD_clear,USBLCD_put,USBLCD_bar,NULL,USBLCD_flush,USBLCD_quit }, + { name: "USBLCD", + rows: 0, + cols: 0, + xres: XRES, + yres: YRES, + bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2, + gpos: 0, + init: USBLCD_init, + clear: USBLCD_clear, + put: USBLCD_put, + bar: USBLCD_bar, + gpo: NULL, + flush: USBLCD_flush, + quit: USBLCD_quit + }, { NULL } }; |