/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2002 by Alan Korr * * All files in this archive are subject to the GNU General Public License. * See the file COPYING in the source tree root for full license agreement. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include "config.h" #include "lcd.h" #include #include /*** definitions ***/ #define LCDR (PBDR+1) /* PA14 : /LCD-BL --- backlight */ #define LCD_BL 6 #ifdef HAVE_LCD_CHARCELLS #define LCD_DS 1 // PB0 = 1 --- 0001 --- LCD-DS #define LCD_CS 2 // PB1 = 1 --- 0010 --- /LCD-CS #define LCD_SD 4 // PB2 = 1 --- 0100 --- LCD-SD #define LCD_SC 8 // PB3 = 1 --- 1000 --- LCD-SC #ifdef HAVE_NEW_CHARCELL_LCD # define LCD_CONTRAST_SET ((char)0x50) # define LCD_CRAM ((char)0x80) /* Characters */ # define LCD_PRAM ((char)0xC0) /* Patterns */ # define LCD_IRAM ((char)0x40) /* Icons */ #else # define LCD_CONTRAST_SET ((char)0xA8) # define LCD_CRAM ((char)0xB0) /* Characters */ # define LCD_PRAM ((char)0x80) /* Patterns */ # define LCD_IRAM ((char)0xE0) /* Icons */ #endif #define LCD_ASCII(c) (lcd_ascii[(c)&255]) #define LCD_CURSOR(x,y) ((char)(LCD_CRAM+((y)*16+(x)))) #define LCD_ICON(i) ((char)(LCD_IRAM+i)) #elif HAVE_LCD_BITMAP #define LCD_SD 1 // PB0 = 1 --- 0001 #define LCD_SC 2 // PB1 = 1 --- 0010 #define LCD_RS 4 // PB2 = 1 --- 0100 #define LCD_CS 8 // PB3 = 1 --- 1000 #define LCD_DS LCD_RS #define LCD_SET_LOWER_COLUMN_ADDRESS ((char)0x00) #define LCD_SET_HIGHER_COLUMN_ADDRESS ((char)0x10) #define LCD_SET_INTERNAL_REGULATOR_RESISTOR_RATIO ((char)0x20) #define LCD_SET_POWER_CONTROL_REGISTER ((char)0x28) #define LCD_SET_DISPLAY_START_LINE ((char)0x40) #define LCD_SET_CONTRAST_CONTROL_REGISTER ((char)0x81) #define LCD_SET_SEGMENT_REMAP ((char)0xA0) #define LCD_SET_LCD_BIAS ((char)0xA2) #define LCD_SET_ENTIRE_DISPLAY_OFF ((char)0xA4) #define LCD_SET_ENTIRE_DISPLAY_ON ((char)0xA5) #define LCD_SET_NORMAL_DISPLAY ((char)0xA6) #define LCD_SET_REVERSE_DISPLAY ((char)0xA7) #define LCD_SET_INDICATOR_OFF ((char)0xAC) #define LCD_SET_INDICATOR_ON ((char)0xAD) #define LCD_SET_DISPLAY_OFF ((char)0xAE) #define LCD_SET_DISPLAY_ON ((char)0xAF) #define LCD_SET_PAGE_ADDRESS ((char)0xB0) #define LCD_SET_COM_OUTPUT_SCAN_DIRECTION ((char)0xC0) #define LCD_SET_DISPLAY_OFFSET ((char)0xD3) #define LCD_SET_READ_MODIFY_WRITE_MODE ((char)0xE0) #define LCD_SOFTWARE_RESET ((char)0xE2) #define LCD_NOP ((char)0xE3) #define LCD_SET_END_OF_READ_MODIFY_WRITE_MODE ((char)0xEE) /* LCD command codes */ #define LCD_CNTL_RESET 0xe2 // Software reset #define LCD_CNTL_POWER 0x2f // Power control #define LCD_CNTL_CONTRAST 0x81 // Contrast #define LCD_CNTL_OUTSCAN 0xc8 // Output scan direction #define LCD_CNTL_SEGREMAP 0xa1 // Segment remap #define LCD_CNTL_DISPON 0xaf // Display on #define LCD_CNTL_PAGE 0xb0 // Page address #define LCD_CNTL_HIGHCOL 0x10 // Upper column address #define LCD_CNTL_LOWCOL 0x00 // Lower column address #endif /* CHARCELL or BITMAP */ /*** generic code ***/ #ifndef SIMULATOR /* * About /CS,DS,SC,SD * ------------------ * * LCD on JBP and JBR uses a SPI protocol to receive orders (SDA and SCK lines) * * - /CS -> Chip Selection line : * 0 : LCD chipset is activated. * - DS -> Data Selection line, latched at the rising edge * of the 8th serial clock (*) : * 0 : instruction register, * 1 : data register; * - SC -> Serial Clock line (SDA). * - SD -> Serial Data line (SCK), latched at the rising edge * of each serial clock (*). * * _ _ * /CS \ / * \______________________________________________________/ * _____ ____ ____ ____ ____ ____ ____ ____ ____ _____ * SD \/ D7 \/ D6 \/ D5 \/ D4 \/ D3 \/ D2 \/ D1 \/ D0 \/ * _____/\____/\____/\____/\____/\____/\____/\____/\____/\_____ * * _____ _ _ _ _ _ _ _ ________ * SC \ * \ * \ * \ * \ * \ * \ * \ * * \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ * _ _________________________________________________________ * DS \/ * _/\_________________________________________________________ * */ /* * The only way to do logical operations in an atomic way * on SH1 is using : * * or.b/and.b/tst.b/xor.b #imm,@(r0,gbr) * * but GCC doesn't generate them at all so some assembly * codes are needed here. * * The Global Base Register gbr is expected to be zero * and r0 is the address of one register in the on-chip * peripheral module. * */ static void lcd_write(bool command, int byte) #ifdef ASM_IMPLEMENTATION { asm("and.b %0, @(r0,gbr)" : : /* %0 */ "I"(~(LCD_CS|LCD_DS|LCD_SD|LCD_SC)), /* %1 */ "z"(LCDR)); if (command) asm ("shll8 %0\n" "0: \n\t" "and.b %2,@(r0,gbr)\n\t" "shll %0\n\t" "bf 1f\n\t" "or.b %3,@(r0,gbr)\n" "1: \n\t" "or.b %4,@(r0,gbr)\n" "add #-1,%1\n\t" "cmp/pl %1\n\t" "bt 0b" : : /* %0 */ "r"(((unsigned)byte)<<16), /* %1 */ "r"(8), /* %2 */ "I"(~(LCD_SC|LCD_SD)), /* %3 */ "I"(LCD_SD), /* %4 */ "I"(LCD_SC|LCD_DS), /* %5 */ "z"(LCDR)); else asm ("shll8 %0\n" "0: \n\t" "and.b %2, @(r0,gbr)\n\t" "shll %0\n\t" "bf 1f\n\t" "or.b %3, @(r0,gbr)\n" "1: \n\t" "or.b %4, @(r0,gbr)\n" "add #-1, %1\n\t" "cmp/pl %1\n\t" "bt 0b" : : /* %0 */ "r"(((unsigned)byte)<<16), /* %1 */ "r"(8), /* %2 */ "I"(~(LCD_SC|LCD_DS|LCD_SD)), /* %3 */ "I"(LCD_SD), /* %4 */ "I"(LCD_SC), /* %5 */ "z"(LCDR)); asm("or.b %0, @(r0,gbr)" : : /* %0 */ "I"(LCD_CS|LCD_DS|LCD_SD|LCD_SC), /* %1 */ "z"(LCDR)); } #else { int i; char on,off; PBDR &= ~LCD_CS; /* enable lcd chip select */ if ( command ) { on=~(LCD_SD|LCD_SC|LCD_DS); off=LCD_SC; } else { on=~(LCD_SD|LCD_SC); off=LCD_SC|LCD_DS; } /* clock out each bit, MSB first */ for (i=0x80;i;i>>=1) { PBDR &= on; if (i & byte) PBDR |= LCD_SD; PBDR |= off; } PBDR |= LCD_CS; /* disable lcd chip select */ } #endif /* ASM_IMPLEMENTATION */ /*** BACKLIGHT ***/ void lcd_backlight(bool on) { if ( on ) PAIOR |= LCD_BL; else PAIOR &= ~LCD_BL; } #endif /* SIMULATOR */ /*** model specific code */ #ifdef HAVE_LCD_CHARCELLS #ifdef HAVE_NEW_CHARCELL_LCD static const unsigned char lcd_ascii[] = { 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07, 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f, 0x10,0x11,0x05,0x13,0x14,0x15,0x16,0x17, 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f, 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27, 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f, 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37, 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f, 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47, 0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f, 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57, 0x58,0x59,0x5a,0x5b,0x5c,0x5d,0x5e,0x5f, 0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67, 0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f, 0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77, 0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f, 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, 0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20, 0x41,0x41,0x41,0x41,0x41,0x41,0x20,0x43, 0x45,0x45,0x45,0x45,0x49,0x49,0x49,0x49, 0x44,0x4e,0x4f,0x4f,0x4f,0x4f,0x4f,0x20, 0x20,0x55,0x55,0x55,0x55,0x59,0x20,0x20, 0x61,0x61,0x61,0x61,0x61,0x61,0x20,0x63, 0x65,0x65,0x65,0x65,0x69,0x69,0x69,0x69, 0x6f,0x6e,0x6f,0x6f,0x6f,0x6f,0x6f,0x20, 0x20,0x75,0x75,0x75,0x75,0x79,0x20,0x79 }; #else static const unsigned char lcd_ascii[] = { 0x00,0x01,0x02,0x03,0x00,0x84,0x85,0x89, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0xec,0xe3,0xe2,0xe1,0xe0,0xdf,0x15,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x24,0x25,0x26,0x37,0x06,0x29,0x2a,0x2b, 0x2c,0x2d,0x2e,0x2f,0x30,0x31,0x32,0x33, 0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b, 0x3c,0x3d,0x3e,0x3f,0x40,0x41,0x42,0x43, 0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b, 0x4c,0x4d,0x4e,0x4f,0x50,0x51,0x52,0x53, 0x54,0x55,0x56,0x57,0x58,0x59,0x5a,0x5b, 0x5c,0x5d,0x5e,0xa9,0x33,0xce,0x00,0x15, 0x00,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b, 0x6c,0x6d,0x6e,0x6f,0x70,0x71,0x72,0x73, 0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x7b, 0x7c,0x7d,0x7e,0x24,0x24,0x24,0x24,0x24, 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24, 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24, 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24, 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24, 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24, 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24, 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24, 0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24, 0x45,0x45,0x45,0x45,0x45,0x45,0x24,0x47, 0x49,0x49,0x49,0x49,0x4d,0x4d,0x4d,0x4d, 0x48,0x52,0x53,0x53,0x53,0x53,0x53,0x24, 0x24,0x59,0x59,0x59,0x59,0x5d,0x24,0x24, 0x65,0x65,0x65,0x65,0x65,0x65,0x24,0x67, 0x69,0x69,0x69,0x69,0x6d,0x6d,0x6d,0x6d, 0x73,0x72,0x73,0x73,0x73,0x73,0x73,0x24, 0x24,0x79,0x79,0x79,0x79,0x7d,0x24,0x7d }; #endif /* HAVE_NEW_CHARCELL_LCD */ #ifndef SIMULATOR void lcd_clear_display(void) { int i; lcd_write(TRUE,LCD_CURSOR(0,0)); for (i=0;i<24;i++) lcd_write(FALSE,0); } void lcd_puts(int x, int y, char *string) { lcd_write(TRUE,LCD_CURSOR(x,y)); while (*string) lcd_write(FALSE,LCD_ASCII(*string++)); } void lcd_define_pattern (int which,char *pattern,int length) { int i; lcd_write(TRUE,LCD_PRAM|which); for (i=0;i #endif /* * All bitmaps have this format: * Bits within a byte are arranged veritcally, LSB at top. * Bytes are stored in column-major format, with byte 0 at top left, * byte 1 is 2nd from top, etc. Bytes following left-most column * starts 2nd left column, etc. * * Note: The HW takes bitmap bytes in row-major order. * * Memory copy of display bitmap */ unsigned char display[LCD_WIDTH][LCD_HEIGHT/8]; /* * ASCII character generation tables * * This contains only the printable characters (0x20-0x7f). * Each element in this table is a character pattern bitmap. */ #define ASCII_MIN 0x20 /* First char in table */ #define ASCII_MAX 0x7f /* Last char in table */ extern unsigned char char_gen_6x8[][5][1]; extern unsigned char char_gen_8x12[][7][2]; extern unsigned char char_gen_12x16[][11][2]; /* All zeros and ones bitmaps for area filling */ static unsigned char zeros[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; static unsigned char ones[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; static char fonts[] = { 6,8,12 }; static char fontheight[] = { 8,12,16 }; #ifndef SIMULATOR /* * Initialize LCD */ void lcd_init (void) { /* Initialize PB0-3 as output pins */ PBCR2 &= 0xff00; /* MD = 00 */ PBIOR |= 0x000f; /* IOR = 1 */ /* Initialize LCD */ lcd_write (TRUE, LCD_CNTL_RESET); lcd_write (TRUE, LCD_CNTL_POWER); lcd_write (TRUE, LCD_CNTL_SEGREMAP); lcd_write (TRUE, LCD_CNTL_OUTSCAN); lcd_write (TRUE, LCD_CNTL_CONTRAST); lcd_write (TRUE, 0x30); /* Contrast parameter */ lcd_write (TRUE, LCD_CNTL_DISPON); lcd_clear_display(); lcd_update(); } /* * Update the display. * This must be called after all other LCD funtions that change the display. */ void lcd_update (void) { int x, y; /* Copy display bitmap to hardware */ for (y = 0; y < LCD_HEIGHT/8; y++) { lcd_write (TRUE, LCD_CNTL_PAGE | (y & 0xf)); lcd_write (TRUE, LCD_CNTL_HIGHCOL); lcd_write (TRUE, LCD_CNTL_LOWCOL); for (x = 0; x < LCD_WIDTH; x++) lcd_write (FALSE, display[x][y]); } } #endif /* SIMULATOR */ /* * Clear the display */ void lcd_clear_display (void) { memset (display, 0, sizeof display); } /* * Put a string at specified position and font */ void lcd_puts(int x, int y, char *str, int font) { int nx = fonts[font]; int ny = fontheight[font]; int ch; unsigned char *src; int lcd_x = x; int lcd_y = y; while ((ch = *str++) != '\0') { if (ch == '\n' || lcd_x + nx > LCD_WIDTH) { /* Wrap to next line */ lcd_x = x; lcd_y += ny; } if (lcd_y + ny > LCD_HEIGHT) return; /* Limit to char generation table */ if (ch >= ASCII_MIN && ch <= ASCII_MAX) { if (nx == 12) src = char_gen_12x16[ch-ASCII_MIN][0]; else if (nx == 8) src = char_gen_8x12[ch-ASCII_MIN][0]; else src = char_gen_6x8[ch-ASCII_MIN][0]; lcd_bitmap (src, lcd_x, lcd_y, nx-1, ny, TRUE); lcd_bitmap (zeros, lcd_x+nx-1, lcd_y, 1, ny, TRUE); lcd_x += nx; } } } /* * Display a bitmap at (x, y), size (nx, ny) * clear is TRUE to clear destination area first */ void lcd_bitmap (unsigned char *src, int x, int y, int nx, int ny, bool clear) { unsigned char *dst; unsigned char *dst2 = &display[x][y/8]; unsigned int data, mask, mask2, mask3, mask4; int shift = y & 7; ny += shift; /* Calculate bit masks */ mask4 = ~(0xfe << ((ny-1) & 7)); if (clear) { mask = ~(0xff << shift); mask2 = 0; mask3 = ~mask4; if (ny <= 8) mask3 |= mask; } else mask = mask2 = mask3 = 0xff; /* Loop for each column */ for (x = 0; x < nx; x++) { dst = dst2; dst2 += LCD_HEIGHT/8; data = 0; y = 0; if (ny > 8) { /* First partial row */ data = *src++ << shift; *dst = (*dst & mask) ^ data; data >>= 8; dst++; /* Intermediate rows */ for (y = 8; y < ny-8; y += 8) { data |= *src++ << shift; *dst = (*dst & mask2) ^ data; data >>= 8; dst++; } } /* Last partial row */ if (y + shift < ny) data |= *src++ << shift; *dst = (*dst & mask3) ^ (data & mask4); } } /* * Draw a rectangle with point a (upper left) at (x, y) * and size (nx, ny) */ void lcd_drawrect (int x, int y, int nx, int ny) { lcd_drawline(x, y, nx, y); lcd_drawline(x, ny, nx, ny); lcd_drawline(x, y, x, ny); lcd_drawline(nx, y, nx, ny); } /* * Clear a rectangular area at (x, y), size (nx, ny) */ void lcd_clearrect (int x, int y, int nx, int ny) { int i; for (i = 0; i < nx; i++) lcd_bitmap (zeros, x+i, y, 1, ny, TRUE); } /* * Fill a rectangular area at (x, y), size (nx, ny) */ void lcd_fillrect (int x, int y, int nx, int ny) { int i; for (i = 0; i < nx; i++) lcd_bitmap (ones, x+i, y, 1, ny, TRUE); } /* Invert a rectangular area at (x, y), size (nx, ny) */ void lcd_invertrect (int x, int y, int nx, int ny) { int i; for (i = 0; i < nx; i++) lcd_bitmap (ones, x+i, y, 1, ny, FALSE); } #define DRAW_PIXEL(x,y) display[x][y/8] |= (1<<(y&7)) #define CLEAR_PIXEL(x,y) display[x][y/8] &= ~(1<<(y&7)) void lcd_drawline( int x1, int y1, int x2, int y2 ) { int numpixels; int i; int deltax, deltay; int d, dinc1, dinc2; int x, xinc1, xinc2; int y, yinc1, yinc2; deltax = abs(x2 - x1); deltay = abs(y2 - y1); if(deltax >= deltay) { numpixels = deltax; d = 2 * deltay - deltax; dinc1 = deltay * 2; dinc2 = (deltay - deltax) * 2; xinc1 = 1; xinc2 = 1; yinc1 = 0; yinc2 = 1; } else { numpixels = deltay; d = 2 * deltax - deltay; dinc1 = deltax * 2; dinc2 = (deltax - deltay) * 2; xinc1 = 0; xinc2 = 1; yinc1 = 1; yinc2 = 1; } numpixels++; /* include endpoints */ if(x1 > x2) { xinc1 = -xinc1; xinc2 = -xinc2; } if(y1 > y2) { yinc1 = -yinc1; yinc2 = -yinc2; } x = x1; y = y1; for(i=0; i #endif #else /* no LCD defined, no code to use */ #endif /* ----------------------------------------------------------------- * local variables: * eval: (load-file "../rockbox-mode.el") * end: */