/* $Id: drv_RouterBoard.c,v 1.6 2006/01/06 07:06:57 reinelt Exp $ * * driver for the "Router Board LCD port" * see port details at http://www.routerboard.com * * Copyright (C) 2004 Roman Jozsef * Copyright (C) 2004 The LCD4Linux Team * * based on the HD44780 parallel port driver and RB SDK example * * This file is part of LCD4Linux. * * LCD4Linux is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * LCD4Linux is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * $Log: drv_RouterBoard.c,v $ * Revision 1.6 2006/01/06 07:06:57 reinelt * GPO's for RouterBoard * * Revision 1.5 2005/05/08 04:32:44 reinelt * CodingStyle added and applied * * Revision 1.4 2005/01/18 06:30:23 reinelt * added (C) to all copyright statements * * Revision 1.3 2004/08/30 12:48:52 rjoco77 * * Added backlight update immediatelly * * Revision 1.2 2004/08/29 20:07:55 reinelt * * Patch from Joco: Make RouterBoard Backlight configurable * */ /* This particulary board not have paralell port but have a special LCD header * where can connect an HD44780 display. * This port called IOSC0 port, and is write only, this port control the * 4 leds on board too. * Because its a write only port you can't control leds outside lcd driver * or inverse, for this added the socket controlled leds. To send led status * simply open an UDP socket and send to localhost 127.0.0.1 port 3333 one * byte or more anyway only the first byte 4 low bits used the others is * cleared and ignored bit0 = Led1 ,bit1 = Led2 ... * This socket polled via timer callback, for detail see at drv_RB_start() * I add at to end of this file an example! * If you don't want coment #define RB_WITH LEDS and this part will be ignored * * The connection details: * The IOCS0 port lower 16 bits connected as follows: * bit LCD LEDS * 0..7 data * 8 INITX * 9 SLINX * 10 AFDX * 11 backlit * 12 LED1 * 13 LED2 * 14 LED3 * 15 LED4 * * LCD male header: * 1 Vcc +5V * 2 GND * 3 RS (Register Select,AFDX) * 4 Contrast adjust (controlled) but how? if you know tell me not mentioned on User Manual * 5 E (enable signal, INITX) * 6 R/W (Data read/write or SLINX) not used connect LCD pin to ground * 7 Data 1 * 8 Data 0 * 9 Data 3 * 10 Data 2 * 11 Data 5 * 12 Data 4 * 13 Data 7 * 14 Data 6 * 15 Backlit GND (controlled) (IOSC0 bit 11) * 16 Backlit Vcc +5V * * If you using this driver and board and you have any fun device connected, * program or story :-) ,please share for me. Thanks. * * Literature * [GEODE] Geode SC1100 Information Appliance On a Chip * (http://www.national.com/ds/SC/SC1100.pdf) * [RB User Manual] * (http://www.routerboard.com) * * * Revision 1.2 * Added backlight control */ /* * * exported fuctions: * * struct DRIVER drv_RouterBoard * */ #include "config.h" #include #include #include #include #include #include #include "debug.h" #include "cfg.h" #include "udelay.h" #include "qprintf.h" #include "plugin.h" #include "widget.h" #include "widget_text.h" #include "widget_icon.h" #include "widget_bar.h" #include "drv.h" #include "drv_generic_text.h" #include "drv_generic_gpio.h" /* #define RB_WITH_LEDS 1 */ #ifdef RB_WITH_LEDS /* Build without socket&led support */ #include #include #include #define POLL_TIMEOUT 10 /* Socket poll timeout */ #define MAXMSG_SIZE 100 /* Max messagge we can receive */ static int sock_c; /* Socket handler */ static struct sockaddr_in *sacl; char sock_msg[MAXMSG_SIZE]; #endif static char Name[] = "RouterBoard"; static int Model; static int Capabilities; /* RouterBoard control signals */ #define LCD_INITX 0x0100 #define LCD_SLINX 0x0200 #define LCD_AFDX 0x0400 #define LCD_BACKLIGHT 0x0800 #define RB_LEDS 0xF000 #define CAR 0x0CF8 #define CDR 0x0CFC /* HD44780 execution timings [microseconds] * as these values differ from spec to spec, * we use the worst-case values. */ #define T_INIT1 4100 /* first init sequence: 4.1 msec */ #define T_INIT2 100 /* second init sequence: 100 usec */ #define T_EXEC 80 /* normal execution time */ #define T_WRCG 120 /* CG RAM Write */ #define T_CLEAR 1680 /* Clear Display */ #define T_AS 60 /* Address setup time */ /* buffer holding the GPO state */ static unsigned char GPO = 0; /* buffor holding backlight and LED states */ static unsigned int RB_Leds = 0; typedef struct { int type; char *name; int capabilities; } MODEL; #define CAP_HD66712 (1<<0) static MODEL Models[] = { {0x01, "HD44780", 0}, {0x02, "HD66712", CAP_HD66712}, {0xff, "Unknown", 0} }; /****************************************/ /*** hardware dependant functions ***/ /****************************************/ #ifdef RB_WITH_LEDS static int drv_RB_sock_init() { if ((sacl = (struct sockaddr_in *) malloc(sizeof(struct sockaddr_in))) == NULL) { return -1; } memset(sacl, 0, sizeof(struct sockaddr_in)); sacl->sin_family = AF_INET; sacl->sin_port = htons(3333); //Listen Port sacl->sin_addr.s_addr = inet_addr("127.0.0.1"); //Listen Address if ((sock_c = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { error("Socket open failed"); free(sacl); return -1; } if (bind(sock_c, (struct sockaddr *) sacl, sizeof(struct sockaddr_in)) < 0) { error("Socket bind open failed"); free(sacl); return -1; } return 0; } static void drv_RB_poll_data(void __attribute__ ((unused)) * notused) { int len, size; struct pollfd usfd; usfd.fd = sock_c; usfd.events = POLLIN | POLLPRI; while (poll(&usfd, 1, POLL_TIMEOUT) > 0) { len = sizeof(struct sockaddr_in); if ((size = recvfrom(sock_c, sock_msg, MAXMSG_SIZE, 0, (struct sockaddr *) sacl, (socklen_t *) & len)) < 0); else { RB_Leds &= 0x0fff; RB_Leds |= (sock_msg[0] & 0x0F) << 12; /* fprintf(stderr, "Received data %s\n",sock_msg); */ } } } #endif static void drv_RB_outw (const unsigned int data) { static unsigned int port = 0; /* IOCS0 port number can read from PCI Configuration Space Function 0 (F0) */ /* at index 74h as 16 bit value (see [GEODE] 5.3.1 pg.151 and pg.176 Table 5-29 */ if (port == 0) { /* get IO permission, here you can't use ioperm command */ iopl(3); outl(0x80009074, CAR); port = inw(CDR); } outw(data | RB_Leds, port); } static int drv_RB_backlight(int backlight) { /* -1 is used to query the current Backlight */ if (backlight == -1) { return (RB_Leds & LCD_BACKLIGHT) ? 1 : 0; } if (backlight > 0) { /* set bit */ RB_Leds |= LCD_BACKLIGHT; backlight = 1; } else { backlight = 0; /* clear bit */ RB_Leds &= ~LCD_BACKLIGHT; } /* Set backlight output */ drv_RB_outw(0); return backlight; } static void drv_RB_command(const unsigned char cmd, const int delay) { drv_RB_outw(LCD_INITX | cmd); ndelay(T_AS); drv_RB_outw(cmd); // wait for command completion udelay(delay); } static void drv_RB_data(const char *string, const int len, const int delay) { int l = len; unsigned char ch; /* sanity check */ if (len <= 0) return; while (l--) { ch = *(string++); drv_RB_outw(ch | LCD_AFDX | LCD_INITX); ndelay(T_AS); drv_RB_outw(ch | LCD_AFDX); // wait for command completion udelay(delay); } } static void drv_RB_clear(void) { drv_RB_command(0x01, T_CLEAR); } static void drv_RB_goto(int row, int col) { int pos; /* 16x1 Displays are organized as 8x2 :-( */ if (DCOLS == 16 && DROWS == 1 && col > 7) { row++; col -= 8; } if (Capabilities & CAP_HD66712) { /* the HD66712 doesn't have a braindamadged RAM layout */ pos = row * 32 + col; } else { /* 16x4 Displays use a slightly different layout */ if (DCOLS == 16 && DROWS == 4) { pos = (row % 2) * 64 + (row / 2) * 16 + col; } else { pos = (row % 2) * 64 + (row / 2) * 20 + col; } } drv_RB_command((0x80 | pos), T_EXEC); } static void drv_RB_write(const int row, const int col, const char *data, const int len) { drv_RB_goto(row, col); drv_RB_data(data, len, T_EXEC); } static void drv_RB_defchar(const int ascii, const unsigned char *matrix) { int i; char buffer[8]; for (i = 0; i < 8; i++) { buffer[i] = matrix[i] & 0x1f; } drv_RB_command(0x40 | 8 * ascii, T_EXEC); drv_RB_data(buffer, 8, T_WRCG); } static int drv_RB_GPO(const int num, const int val) { int v; if (val > 0) { /* set bit */ v = 1; GPO |= 1 << num; } else { /* clear bit */ v = 0; GPO &= ~(1 << num); } RB_Leds &= 0x0fff; RB_Leds |= GPO << 12; drv_RB_outw(0); return v; } static int drv_RB_start(const char *section, const int quiet) { char *model, *strsize; int rows = -1, cols = -1, gpos = -1; int l; model = cfg_get(section, "Model", "HD44780"); if (model != NULL && *model != '\0') { int i; for (i = 0; Models[i].type != 0xff; i++) { if (strcasecmp(Models[i].name, model) == 0) break; } if (Models[i].type == 0xff) { error("%s: %s.Model '%s' is unknown from %s", Name, section, model, cfg_source()); return -1; } Model = i; Capabilities = Models[Model].capabilities; info("%s: using model '%s'", Name, Models[Model].name); } else { error("%s: empty '%s.Model' entry from %s", Name, section, cfg_source()); return -1; } free(model); strsize = cfg_get(section, "Size", NULL); if (strsize == NULL || *strsize == '\0') { error("%s: no '%s.Size' entry from %s", Name, section, cfg_source()); free(strsize); return -1; } if (sscanf(strsize, "%dx%d", &cols, &rows) != 2 || rows < 1 || cols < 1) { error("%s: bad %s.Size '%s' from %s", Name, section, strsize, cfg_source()); free(strsize); return -1; } free(strsize); /*set backlight */ if (cfg_number(section, "Backlight", 1, 0, 1, &l) > 0) { drv_RB_backlight(l); } if (cfg_number(section, "GPOs", 0, 0, 4, &gpos) < 0) return -1; GPOS = gpos; if (GPOS > 0) { info("%s: using %d GPO's", Name, GPOS); } #ifdef RB_WITH_LEDS if (drv_RB_sock_init() < 0) { error("Sock error"); return -1; } else timer_add(drv_RB_poll_data, NULL, 500, 0); #endif DROWS = rows; DCOLS = cols; drv_RB_command(0x30, T_INIT1); /* 8 Bit mode, wait 4.1 ms */ drv_RB_command(0x30, T_INIT2); /* 8 Bit mode, wait 100 us */ drv_RB_command(0x38, T_EXEC); /* 8 Bit mode, 1/16 duty cycle, 5x8 font */ drv_RB_command(0x08, T_EXEC); /* Display off, cursor off, blink off */ drv_RB_command(0x0c, T_CLEAR); /* Display on, cursor off, blink off, wait 1.64 ms */ drv_RB_command(0x06, T_EXEC); /* curser moves to right, no shift */ if ((Capabilities & CAP_HD66712) && DROWS > 2) { drv_RB_command(0x3c, T_EXEC); /* set extended register enable bit */ drv_RB_command(0x09, T_EXEC); /* set 4-line mode */ drv_RB_command(0x38, T_EXEC); /* clear extended register enable bit */ } drv_RB_clear(); drv_RB_command(0x03, T_CLEAR); /* return home */ if (!quiet) { char buffer[40]; qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS); if (drv_generic_text_greet(buffer, NULL)) { sleep(3); drv_RB_clear(); } } return 0; } /****************************************/ /*** plugins ***/ /****************************************/ static void plugin_backlight(RESULT * result, const int argc, RESULT * argv[]) { double backlight; switch (argc) { case 0: backlight = drv_RB_backlight(-1); SetResult(&result, R_NUMBER, &backlight); break; case 1: backlight = drv_RB_backlight(R2N(argv[0])); SetResult(&result, R_NUMBER, &backlight); break; default: error("%s::backlight(): wrong number of parameters", Name); SetResult(&result, R_STRING, ""); } } /****************************************/ /*** widget callbacks ***/ /****************************************/ /* using drv_generic_text_draw(W) */ /* using drv_generic_text_icon_draw(W) */ /* using drv_generic_text_bar_draw(W) */ /* using drv_generic_gpio_draw(W) */ /****************************************/ /*** exported functions ***/ /****************************************/ /* list models */ int drv_RB_list(void) { int i; for (i = 0; Models[i].type != 0xff; i++) { printf("%s ", Models[i].name); } return 0; } /* initialize driver & display */ int drv_RB_init(const char *section, const int quiet) { WIDGET_CLASS wc; int asc255bug; int ret; /* display preferences */ XRES = 5; /* pixel width of one char */ YRES = 8; /* pixel height of one char */ CHARS = 8; /* number of user-defineable characters */ CHAR0 = 0; /* ASCII of first user-defineable char */ GOTO_COST = 2; /* number of bytes a goto command requires */ /* real worker functions */ drv_generic_text_real_write = drv_RB_write; drv_generic_text_real_defchar = drv_RB_defchar; drv_generic_gpio_real_set = drv_RB_GPO; /* start display */ if ((ret = drv_RB_start(section, quiet)) != 0) return ret; /* initialize generic text driver */ if ((ret = drv_generic_text_init(section, Name)) != 0) return ret; /* initialize generic icon driver */ if ((ret = drv_generic_text_icon_init()) != 0) return ret; /* initialize generic bar driver */ if ((ret = drv_generic_text_bar_init(0)) != 0) return ret; /* add fixed chars to the bar driver */ /* most displays have a full block on ascii 255, but some have kind of */ /* an 'inverted P'. If you specify 'asc255bug 1 in the config, this */ /* char will not be used, but rendered by the bar driver */ cfg_number(section, "asc255bug", 0, 0, 1, &asc255bug); drv_generic_text_bar_add_segment(0, 0, 255, 32); /* ASCII 32 = blank */ if (!asc255bug) drv_generic_text_bar_add_segment(255, 255, 255, 255); /* ASCII 255 = block */ /* initialize generic GPIO driver */ if ((ret = drv_generic_gpio_init(section, Name)) != 0) return ret; /* register text widget */ wc = Widget_Text; wc.draw = drv_generic_text_draw; widget_register(&wc); /* register icon widget */ wc = Widget_Icon; wc.draw = drv_generic_text_icon_draw; widget_register(&wc); /* register bar widget */ wc = Widget_Bar; wc.draw = drv_generic_text_bar_draw; widget_register(&wc); /* register plugins */ AddFunction("LCD::backlight", -1, plugin_backlight); return 0; } /* close driver & display */ int drv_RB_quit(const int quiet) { info("%s: shutting down.", Name); drv_generic_text_quit(); drv_generic_gpio_quit(); /* clear *both* displays */ drv_RB_clear(); /* say goodbye... */ if (!quiet) { drv_generic_text_greet("goodbye!", NULL); } #ifdef RB_WITH_LEDS close(sock_c); free(sacl); /*close network socket */ #endif return (0); } DRIVER drv_RouterBoard = { name:Name, list:drv_RB_list, init:drv_RB_init, quit:drv_RB_quit, }; /* Simple example to send led status to port 3333 #include #include #include int send_packet (unsigned char leds) { struct sockaddr_in *sas; int sock; char msg[20]; msg[0]=leds; msg[1]=0; if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) { fprintf(stderr, "Socket option failed.\n"); return -1; } if (( sas = (struct sockaddr_in *) malloc(sizeof(struct sockaddr_in))) == NULL) return -1 ; memset( sas, 0, sizeof(struct sockaddr_in)); sas->sin_family = AF_INET; sas->sin_port = htons(3333); sas->sin_addr.s_addr = inet_addr("127.0.0.1"); if(sendto(sock,msg,6, 0, (struct sockaddr *) sas, sizeof(struct sockaddr_in)) > 0) { free(sas); return 1; } //sent ok to dest free(sas); return -1; //Send failed } int main () { send_packet(0x03); return 0; } */ id='n423' href='#n423'>423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840