Mercurial > mbsePi-apps / file comparison
comparison: thermferm/slcd.c
thermferm/slcd.c
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- 644a6106d712
- child 422
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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 * This 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 ThermFerm; 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 "thermferm.h" | |
| 24 #include "slcd.h" | |
| 25 #include "futil.h" | |
| 26 #include "xutil.h" | |
| 27 | |
| 28 | |
| 29 #define SLCD_NULL 0x0000 | |
| 30 #define SLCD_CLEAR 0x0001 | |
| 31 #define SLCD_MCLEAR 0x1fff | |
| 32 #define SLCD_HOME 0x0002 | |
| 33 #define SLCD_MHOME 0x1ffe | |
| 34 #define SLCD_DGRAM 0x0080 | |
| 35 #define SLCD_MDGRAM 0x1f80 | |
| 36 #define SLCD_DATA 0x0200 | |
| 37 #define SLCD_MDATA 0x1e00 | |
| 38 #define SLCD_LEDS 0x0400 | |
| 39 #define SLCD_MLEDS 0x1c00 | |
| 40 #define SLCD_KEYS 0x0800 | |
| 41 #define SLCD_MKEYS 0x1800 | |
| 42 #define SLCD_MDEV 0xe000 | |
| 43 | |
| 44 #define SEND_PORT 6554 | |
| 45 | |
| 46 | |
| 47 struct sockaddr_in sendaddr; /* Server send socket */ | |
| 48 int sock = -1; | |
| 49 | |
| 50 extern int debug; | |
| 51 | |
| 52 | |
| 53 void putLCDsocket(int fd, uint16_t data) | |
| 54 { | |
| 55 if (sock == -1) | |
| 56 return; | |
| 57 | |
| 58 if (sendto(sock, &data, sizeof(uint16_t), 0, (struct sockaddr *)&sendaddr, sizeof(sendaddr)) != sizeof(uint16_t)) { | |
| 59 syslog(LOG_NOTICE, "Socket send failed, closing socket: %s", strerror(errno)); | |
| 60 if (shutdown(sock, SHUT_RDWR)) { | |
| 61 syslog(LOG_NOTICE, "Can't shutdown socket: %s", strerror(errno)); | |
| 62 } | |
| 63 sock = -1; | |
| 64 // } else { | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 | |
| 69 | |
| 70 //void slcdHome(int fd) | |
| 71 //{ | |
| 72 //} | |
| 73 | |
| 74 | |
| 75 | |
| 76 void slcdClear(int fd) | |
| 77 { | |
| 78 putLCDsocket(fd, SLCD_CLEAR); | |
| 79 putLCDsocket(fd, SLCD_HOME); | |
| 80 } | |
| 81 | |
| 82 | |
| 83 | |
| 84 //void slcdDisplay(int fd, int state) | |
| 85 //{ | |
| 86 //} | |
| 87 | |
| 88 | |
| 89 | |
| 90 //void slcdCursor(int fd, int state) | |
| 91 //{ | |
| 92 //} | |
| 93 | |
| 94 | |
| 95 | |
| 96 //void slcdCursorBlink(int fd, int state) | |
| 97 //{ | |
| 98 //} | |
| 99 | |
| 100 | |
| 101 | |
| 102 //void slcdSendCommand(int fd, unsigned char command) | |
| 103 //{ | |
| 104 //} | |
| 105 | |
| 106 | |
| 107 | |
| 108 void slcdPosition(int fd, int x, int y) | |
| 109 { | |
| 110 uint16_t data = SLCD_DGRAM; | |
| 111 | |
| 112 data += (x & 0x1f) + ((y & 0x03) << 5); | |
| 113 putLCDsocket(fd, data); | |
| 114 } | |
| 115 | |
| 116 | |
| 117 | |
| 118 //void slcdCharDef(int fd, int index, unsigned char data[8]) | |
| 119 //{ | |
| 120 //} | |
| 121 | |
| 122 | |
| 123 | |
| 124 void slcdPutchar(int fd, unsigned char c) | |
| 125 { | |
| 126 uint16_t data = SLCD_DATA; | |
| 127 | |
| 128 data += c & 0x0ff; | |
| 129 putLCDsocket(fd, data); | |
| 130 } | |
| 131 | |
| 132 | |
| 133 | |
| 134 void slcdPuts(int fd, const char *string) | |
| 135 { | |
| 136 while (*string) | |
| 137 slcdPutchar(fd, *string++); | |
| 138 } | |
| 139 | |
| 140 | |
| 141 | |
| 142 //void slcdPrintf(int fd, const char *message, ...) | |
| 143 //{ | |
| 144 //} | |
| 145 | |
| 146 | |
| 147 | |
| 148 /* | |
| 149 * Try to setup a udp connection to 127.0.0.1 so we duplicate the panel | |
| 150 * display and keys of the real panel. This should fail on a production | |
| 151 * system because there should no brewpanel program be running. If it | |
| 152 * succeeds, all io will be duplicated over the network. | |
| 153 */ | |
| 154 int slcdInit(int fd, int cols, int rows) | |
| 155 { | |
| 156 if ((sock = socket(AF_INET, SOCK_DGRAM /*| SOCK_NONBLOCK */, 0)) < 0) { | |
| 157 syslog(LOG_NOTICE, "slcdInit() can't create socket: %s", strerror(errno)); | |
| 158 return -1; | |
| 159 } | |
| 160 | |
| 161 /* | |
| 162 * Setup address structure for the server socket. | |
| 163 */ | |
| 164 memset(&sendaddr, 0, sizeof(struct sockaddr_in)); | |
| 165 sendaddr.sin_family = AF_INET; | |
| 166 sendaddr.sin_addr.s_addr = inet_addr("127.0.0.1"); | |
| 167 sendaddr.sin_port = htons(SEND_PORT); | |
| 168 | |
| 169 if (connect(sock, (struct sockaddr *)&sendaddr, sizeof(sendaddr)) < 0) { | |
| 170 close(sock); | |
| 171 sock = -1; | |
| 172 syslog(LOG_NOTICE, "slcdInit() can't bind sendsock %s", strerror(errno)); | |
| 173 return -1; | |
| 174 } | |
| 175 | |
| 176 syslog(LOG_NOTICE, "slcdInit() socket %d to brewpanel is active", sock); | |
| 177 return 0; | |
| 178 } | |
| 179 | |
| 180 |
