Mercurial > mbsePi-apps / file comparison
comparison: brewpanel/sockio.c
brewpanel/sockio.c
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| 419:8a7f8272516c | 420:644a6106d712 |
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| 1 /***************************************************************************** | |
| 2 * Copyright (C) 2015 | |
| 3 * | |
| 4 * Michiel Broek <mbroek at mbse dot eu> | |
| 5 * | |
| 6 * This file is part of the mbsePi-apps | |
| 7 * | |
| 8 * mbsePi-apps is free software; you can redistribute it and/or modify it | |
| 9 * under the terms of the GNU General Public License as published by the | |
| 10 * Free Software Foundation; either version 2, or (at your option) any | |
| 11 * later version. | |
| 12 * | |
| 13 * mbsePi-apps is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 * General Public License for more details. | |
| 17 * | |
| 18 * You should have received a copy of the GNU General Public License | |
| 19 * along with mbsePi-apps; see the file COPYING. If not, write to the Free | |
| 20 * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
| 21 *****************************************************************************/ | |
| 22 | |
| 23 #include "brewpanel.h" | |
| 24 #include "slcd.h" | |
| 25 #include "futil.h" | |
| 26 #include "sockio.h" | |
| 27 | |
| 28 #ifdef HAVE_SDL_SDL_H | |
| 29 | |
| 30 #define SLCD_NULL 0x0000 | |
| 31 #define SLCD_CLEAR 0x0001 | |
| 32 #define SLCD_MCLEAR 0x1fff | |
| 33 #define SLCD_HOME 0x0002 | |
| 34 #define SLCD_MHOME 0x1ffe | |
| 35 #define SLCD_DGRAM 0x0080 | |
| 36 #define SLCD_MDGRAM 0x1f80 | |
| 37 #define SLCD_DATA 0x0200 | |
| 38 #define SLCD_MDATA 0x1e00 | |
| 39 #define SLCD_LEDS 0x0400 | |
| 40 #define SLCD_MLEDS 0x1c00 | |
| 41 #define SLCD_KEYS 0x0800 | |
| 42 #define SLCD_MKEYS 0x1800 | |
| 43 #define SLCD_MDEV 0xe000 | |
| 44 | |
| 45 | |
| 46 int sock = -1; /* Unix datagram socket */ | |
| 47 struct sockaddr_in servaddr; /* Server socket address */ | |
| 48 | |
| 49 | |
| 50 | |
| 51 void socket_recv(void) | |
| 52 { | |
| 53 uint16_t data; | |
| 54 struct sockaddr_in clntaddr; | |
| 55 socklen_t clntlen = sizeof(clntaddr); | |
| 56 ssize_t recv_len; | |
| 57 int fd, my_error; | |
| 58 | |
| 59 recv_len = recvfrom(sock, &data, sizeof(uint16_t), MSG_DONTWAIT, (struct sockaddr *)&clntaddr, &clntlen); | |
| 60 if (recv_len == sizeof(uint16_t)) { | |
| 61 /* | |
| 62 * Get device from data | |
| 63 */ | |
| 64 fd = data & SLCD_MDEV >> 13; | |
| 65 if (fd) | |
| 66 fprintf(stdout, "Device %d ", fd); | |
| 67 if ((data & SLCD_MCLEAR) == SLCD_CLEAR) { | |
| 68 slcdClear(fd); | |
| 69 } else if ((data & SLCD_MHOME) == SLCD_HOME) { | |
| 70 slcdHome(fd); | |
| 71 } else if ((data & SLCD_MDGRAM) == SLCD_DGRAM) { | |
| 72 fprintf(stdout, "slcdPosition(%d, %d, %d)\n", fd, data & 0x001f, (data & 0x0060) >> 5); | |
| 73 slcdPosition(fd, data & 0x001f, (data & 0x0060) >> 5); | |
| 74 } else if ((data & 0xfe00) == SLCD_DATA) { | |
| 75 slcdPutchar(fd, data & 0x00ff); | |
| 76 } else { | |
| 77 fprintf(stdout, "socket_recv got %04x\n", data); | |
| 78 } | |
| 79 } else if (recv_len < 0) { | |
| 80 my_error = errno; | |
| 81 if (my_error != EAGAIN) { | |
| 82 fprintf(stdout, "socket_recv error: %s", strerror(my_error)); | |
| 83 } | |
| 84 } else { | |
| 85 fprintf(stdout, "socket_recv unknown len=%d\n", (int)recv_len); | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 | |
| 90 | |
| 91 int socket_connect(void) | |
| 92 { | |
| 93 int s; | |
| 94 | |
| 95 s = socket(AF_INET, SOCK_DGRAM, 0); | |
| 96 if (s == -1) { | |
| 97 syslog(LOG_NOTICE, "socket_connect() can't create: %s", strerror(errno)); | |
| 98 return -1; | |
| 99 } | |
| 100 | |
| 101 /* | |
| 102 * Setup address structure for the server socket. | |
| 103 */ | |
| 104 memset(&servaddr, 0, sizeof(servaddr)); | |
| 105 servaddr.sin_family = AF_INET; | |
| 106 servaddr.sin_port = htons(6554); | |
| 107 servaddr.sin_addr.s_addr = inet_addr("127.0.0.1"); | |
| 108 | |
| 109 if (bind(s, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0) { | |
| 110 close(s); | |
| 111 syslog(LOG_NOTICE, "socket_connect() can't bind socket: %s", strerror(errno)); | |
| 112 return -1; | |
| 113 } | |
| 114 | |
| 115 syslog(LOG_NOTICE, "socket_connect() using socket %d", s); | |
| 116 sock = s; | |
| 117 return sock; | |
| 118 } | |
| 119 | |
| 120 | |
| 121 #endif |
