/* $Id: drv_LEDMatrix.c,v 1.10 2006/09/07 09:06:25 reinelt Exp $ * * LED matrix driver for LCD4Linux * (see http://www.harbaum.org/till/ledmatrix for hardware) * * Copyright (C) 2006 Till Harbaum * * 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_LEDMatrix.c,v $ * Revision 1.10 2006/09/07 09:06:25 reinelt * lots of wrong printf formats corrected (thanks to Ernst Bachmann) * * Revision 1.9 2006/08/14 19:24:22 harbaum * Umlaut support, added KVV HTTP-User-Agent * * Revision 1.8 2006/08/14 05:54:04 reinelt * minor warnings fixed, CFLAGS changed (no-strict-aliasing) * * Revision 1.7 2006/08/13 18:45:25 harbaum * Little cleanup ... * * Revision 1.6 2006/08/13 18:14:03 harbaum * Added KVV plugin * * Revision 1.5 2006/08/13 09:53:10 reinelt * dynamic properties added (used by 'style' of text widget) * * Revision 1.4 2006/08/13 06:46:51 reinelt * T6963 soft-timing & enhancements; indent * * Revision 1.3 2006/08/09 17:25:34 harbaum * Better bar color support and new bold font * * Revision 1.2 2006/08/08 20:16:28 harbaum * Added "extracolor" (used for e.g. bar border) and RGB support for LEDMATRIX * * Revision 1.1 2006/08/05 21:08:01 harbaum * New LEDMATRIX driver (see http://www.harbaum.org/till/ledmatrix) * * */ /* * * exported fuctions: * * struct DRIVER drv_LEDMatrix * */ /* * Options: * IPAddress */ #include "config.h" #include #include #include #include #include #include #include #include /* include network specific headers */ #include #include #include #include #include #include "debug.h" #include "cfg.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_graphic.h" // display command bytes #define DSP_CMD_ECHO 0 #define DSP_CMD_NOP 1 #define DSP_CMD_IMAGE 2 #define DSP_CMD_ACK 3 #define DSP_CMD_IR 4 #define DSP_CMD_BEEP 5 #define DSP_DEFAULT_PORT 4711 #define DSP_MEM (80 * 32 * 2 / 8) #define DEFAULT_X_OFFSET 1 // with a font width of 6 static char Name[] = "LEDMatrix"; static char *IPAddress = NULL; static int sock = -1; static struct sockaddr_in dsp_addr; static unsigned char tx_buffer[DSP_MEM + 1]; static int port = DSP_DEFAULT_PORT; static void drv_LEDMatrix_blit(const int row, const int col, const int height, const int width) { int r, c, i; fd_set rfds; struct timeval tv; unsigned char reply[256]; struct sockaddr_in cli_addr; socklen_t fromlen; int ack = 0; int timeout = 10; for (r = row; r < row + height; r++) { for (c = col; c < col + width; c++) { /* LEDMATRIX supports three colors: 10b == green, 01b == red, 11b == amber */ unsigned char color = 0; RGBA p = drv_generic_graphic_rgb(r, c); if (p.G >= 128) color |= 0x80; if (p.R >= 128) color |= 0x40; /* ignore blue ... */ tx_buffer[1 + 20 * r + c / 4] &= ~(0xc0 >> (2 * (c & 3))); tx_buffer[1 + 20 * r + c / 4] |= color >> (2 * (c & 3)); } } // scan entire display tx_buffer[0] = DSP_CMD_IMAGE; do { if ((sendto(sock, tx_buffer, DSP_MEM + 1, 0, (struct sockaddr *) &dsp_addr, sizeof(dsp_addr))) != DSP_MEM + 1) error("%s: sendto error on socket", Name); /* now wait for reply */ FD_ZERO(&rfds); FD_SET(sock, &rfds); tv.tv_sec = 0; tv.tv_usec = 100000; // wait 1 sec for ack if ((i = select(FD_SETSIZE, &rfds, NULL, NULL, &tv)) < 0) { info("%s: Select error: %s", Name, strerror(errno)); } if (FD_ISSET(sock, &rfds)) { // wait for ack fromlen = sizeof(dsp_addr); i = recvfrom(sock, reply, sizeof(reply), 0, (struct sockaddr *) &cli_addr, &fromlen); if (i < 0) { info("%s: Receive error: %s", Name, strerror(errno)); } else { if ((i == 2) && (reply[0] == DSP_CMD_ACK) && (reply[1] == DSP_CMD_IMAGE)) { ack = 1; } else if ((i > 1) && (reply[0] == DSP_CMD_IR)) { // maybe used later: // ir_receive(reply+1, i-1); } else { info("%s: Unexpected reply message", Name); } } } timeout--; } while ((!ack) && (timeout > 0)); if (timeout == 0) { error("%s: display reply timeout", Name); } } static int drv_LEDMatrix_start(const char *section) { char *s; struct sockaddr_in cli_addr; struct hostent *hp; int val; IPAddress = cfg_get(section, "IPAddress", NULL); if (IPAddress == NULL || *IPAddress == '\0') { error("%s: no '%s.IPAddress' entry from %s", Name, section, cfg_source()); return -1; } if (cfg_number(section, "Port", 0, 0, 65535, &val) > 0) { info("%s: port set to %d", Name, val); port = val; } else { info("%s: using default port %d", Name, port); } /* display size is hard coded */ DCOLS = 80; DROWS = 32; if (sscanf(s = cfg_get(section, "font", "6x8"), "%dx%d", &XRES, &YRES) != 2 || XRES < 1 || YRES < 1) { error("%s: bad %s.Font '%s' from %s", Name, section, s, cfg_source()); free(s); return -1; } free(s); /* contact display */ info("%s: contacting %s", Name, IPAddress); /* try to resolve as a hostname */ if ((hp = gethostbyname(IPAddress)) == NULL) { error("%s: unable to resolve hostname %s: %s", Name, IPAddress, strerror(errno)); return -1; } /* open datagram socket */ if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { error("%s: could not create socket: %s", Name, strerror(errno)); return -1; } memset((char *) &dsp_addr, 0, sizeof(dsp_addr)); dsp_addr.sin_family = AF_INET; dsp_addr.sin_addr.s_addr = *(int *) hp->h_addr; dsp_addr.sin_port = htons(port); cli_addr.sin_family = AF_INET; cli_addr.sin_addr.s_addr = htons(INADDR_ANY); cli_addr.sin_port = htons(port); if (bind(sock, (struct sockaddr *) &cli_addr, sizeof(cli_addr)) < 0) { error("%s: can't bind local address: %s", Name, strerror(errno)); return -1; } memset(tx_buffer, 0, sizeof(tx_buffer)); return 0; } /****************************************/ /*** plugins ***/ /****************************************/ /* none at the moment... */ /****************************************/ /*** widget callbacks ***/ /****************************************/ /* using drv_generic_graphic_draw(W) */ /* using drv_generic_graphic_icon_draw(W) */ /* using drv_generic_graphic_bar_draw(W) */ /****************************************/ /*** exported functions ***/ /****************************************/ /* list models */ int drv_LEDMatrix_list(void) { return 0; } /* initialize driver & display */ int drv_LEDMatrix_init(const char *section, const __attribute__ ((unused)) int quiet) { WIDGET_CLASS wc; int ret; /* real worker functions */ drv_generic_graphic_real_blit = drv_LEDMatrix_blit; /* start display */ if ((ret = drv_LEDMatrix_start(section)) != 0) return ret; /* initialize generic graphic driver */ if ((ret = drv_generic_graphic_init(section, Name)) != 0) return ret; /* register text widget */ wc = Widget_Text; wc.draw = drv_generic_graphic_draw; widget_register(&wc); /* register icon widget */ wc = Widget_Icon; wc.draw = drv_generic_graphic_icon_draw; widget_register(&wc); /* register bar widget */ wc = Widget_Bar; wc.draw = drv_generic_graphic_bar_draw; widget_register(&wc); /* register plugins */ /* none at the moment... */ return 0; } /* close driver & display */ int drv_LEDMatrix_quit(const __attribute__ ((unused)) int quiet) { info("%s: shutting down.", Name); drv_generic_graphic_quit(); if (sock != -1) close(sock); return (0); } DRIVER drv_LEDMatrix = { name:Name, list:drv_LEDMatrix_list, init:drv_LEDMatrix_init, quit:drv_LEDMatrix_quit, }; 6' href='#n186'>186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349