diff options
Diffstat (limited to 'M50530.c')
| -rw-r--r-- | M50530.c | 311 |
1 files changed, 55 insertions, 256 deletions
@@ -1,4 +1,4 @@ -/* $Id: M50530.c,v 1.4 2002/08/19 07:36:29 reinelt Exp $ +/* $Id: M50530.c,v 1.5 2002/08/19 10:51:06 reinelt Exp $ * * driver for display modules based on the M50530 chip * @@ -20,6 +20,9 @@ * * * $Log: M50530.c,v $ + * Revision 1.5 2002/08/19 10:51:06 reinelt + * M50530 driver using new generic bar functions + * * Revision 1.4 2002/08/19 07:36:29 reinelt * * finished bar.c, USBLCD is the first driver that uses the generic bar functions @@ -74,7 +77,6 @@ #define XRES 5 #define YRES 8 #define CHARS 8 -#define BARS ( BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2 ) static LCD Lcd; @@ -83,11 +85,8 @@ static char *PPdev=NULL; static int PPfd=-1; static char Txt[8][40]; -static BAR Bar[8][40]; static int GPO=0; -static int nSegment=1; -static SEGMENT Segment[128] = {{ len1:0, len2:0, type:255, used:0, ascii:32 }}; static void M5_command (unsigned int cmd, int delay) { @@ -119,7 +118,8 @@ static void M5_command (unsigned int cmd, int delay) ioctl (PPfd, PPFCONTROL, &frob); // EX signal pulse width - ndelay(200); + // Fixme: why 500 ns? Datasheet says 200ns + ndelay(500); // lower EX (Strobe, inverted) frob.mask=PARPORT_CONTROL_STROBE; @@ -131,6 +131,7 @@ static void M5_command (unsigned int cmd, int delay) } + static void M5_write (unsigned char *string, int len) { unsigned int cmd; @@ -141,6 +142,7 @@ static void M5_write (unsigned char *string, int len) } } + static void M5_setGPO (int bits) { if (Lcd.gpos>0) { @@ -166,6 +168,7 @@ static void M5_setGPO (int bits) } } + static int M5_open (void) { @@ -198,172 +201,13 @@ static int M5_open (void) return 0; } -static void M5_process_bars (void) -{ - int row, col; - int i, j; - - for (i=1; 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 M5_segment_diff (int i, int j) +static void M5_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); + M5_command (0x300+192+8*ascii, 20); + M5_write (buffer, 8); } -static void M5_compact_bars (void) -{ - int i, j, r, c, min; - int pack_i, pack_j; - int pass1=1; - int deviation[nSegment][nSegment]; - - if (nSegment>CHARS+1) { - - for (i=1; i<nSegment; i++) { - for (j=0; j<nSegment; j++) { - deviation[i][j]=M5_segment_diff(i,j); - } - } - - while (nSegment>CHARS+1) { - 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 ("M50530: 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 M5_define_chars (void) -{ - int c, i, j; - char buffer[8]; - - for (i=1; i<nSegment; i++) { - if (Segment[i].used) continue; - if (Segment[i].ascii!=-1) continue; - for (c=0; c<CHARS; c++) { - for (j=1; j<nSegment; j++) { - if (Segment[j].ascii==248+c) break; - } - if (j==nSegment) break; - } - Segment[i].ascii=248+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; - } - M5_command (0x300+192+8*c, 20); - M5_write (buffer, 8); - } -} int M5_clear (void) { @@ -372,18 +216,19 @@ int M5_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(); + GPO=0; M5_setGPO (GPO); // All GPO's off + M5_command (0x0001, 1250); // clear display return 0; } + int M5_init (LCD *Self) { int rows=-1, cols=-1, gpos=-1; @@ -414,11 +259,13 @@ int M5_init (LCD *Self) s=cfg_get ("GPOs"); if (s==NULL) { gpos=0; + } else { + gpos=strtol(s, &e, 0); + if (*e!='\0' || gpos<0 || gpos>8) { + error ("M50530: bad GPOs '%s' in %s", s, cfg_file()); + return -1; + } } - else if ((gpos=strtol(s, &e, 0))==0 || *e!='\0' || gpos<0 || gpos>8) { - error ("M50530: bad GPOs '%s' in %s", s, cfg_file()); - return -1; - } Self->rows=rows; Self->cols=cols; @@ -430,11 +277,15 @@ int M5_init (LCD *Self) if (M5_open()!=0) return -1; + bar_init(rows, cols, XRES, YRES, CHARS); + bar_add_segment(0,0,255,32); // ASCII 32 = blank + M5_clear(); return 0; } + void M5_goto (int row, int col) { int pos; @@ -444,6 +295,7 @@ void M5_goto (int row, int col) M5_command (0x300|pos, 20); } + int M5_put (int row, int col, char *text) { char *p=&Txt[row][col]; @@ -455,77 +307,13 @@ int M5_put (int row, int col, char *text) return 0; } + int M5_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 M5_gpo (int num, int val) { if (num>=Lcd.gpos) @@ -539,26 +327,21 @@ int M5_gpo (int num, int val) return 0; } + int M5_flush (void) { unsigned char buffer[256]; unsigned char *p; - int s, row, col; + int c, row, col; - M5_process_bars(); - M5_compact_bars(); - M5_define_chars(); - - for (s=0; s<nSegment; s++) { - Segment[s].used=0; - } + bar_process(M5_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) { + if (c!=32) c+=248; //blank + Txt[row][col]=(char)(c); } } for (col=0; col<Lcd.cols; col++) { @@ -577,6 +360,7 @@ int M5_flush (void) return 0; } + int M5_quit (void) { debug ("closing ppdev %s", PPdev); @@ -590,7 +374,22 @@ int M5_quit (void) return 0; } + LCD M50530[] = { - { "M50530",0,0,XRES,YRES,BARS,0,M5_init,M5_clear,M5_put,M5_bar,M5_gpo,M5_flush,M5_quit }, + { name: "M50530", + rows: 0, + cols: 0, + xres: XRES, + yres: YRES, + bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2, + gpos: 0, + init: M5_init, + clear: M5_clear, + put: M5_put, + bar: M5_bar, + gpo: M5_gpo, + flush: M5_flush, + quit: M5_quit + }, { NULL } }; |